
The Mutt Next Generation E-Mail Client

Andreas Krennmair

   <aakk@@ssyynnfflloooodd..aatt>

Michael Elkins

   <mmee@@ccss..hhmmcc..eedduu>

   version devel-r790

   _A_b_s_t_r_a_c_t

   Michael Elinks on mutt, circa 1995: ``All mail clients suck. This one
   just sucks less.''

   Sven Guckes on mutt, ca. 2003: ``But it still sucks!''
     _________________________________________________________________

   _T_a_b_l_e_ _o_f_ _C_o_n_t_e_n_t_s

   11..  IInnttrroodduuccttiioonn

        11..  OOvveerrvviieeww
        22..  MMuutttt--nngg  HHoommee  PPaaggee
        33..  MMaaiilliinngg  LLiissttss
        44..  SSooffttwwaarree  DDiissttrriibbuuttiioonn  SSiitteess
        55..  IIRRCC
        66..  WWeebblloogg
        77..  CCooppyyrriigghhtt
        88..  MMaannuuaall  CCoonnvveennttiioonnss

   22..  GGeettttiinngg  SSttaarrtteedd

        11..  BBaassiicc  CCoonncceeppttss

              11..11..  SSccrreeeennss  aanndd  MMeennuuss
              11..22..  CCoonnffiigguurraattiioonn
              11..33..  FFuunnccttiioonnss
              11..44..  IInntteerraaccttiioonn
              11..55..  MMoodduullaarriizzaattiioonn
              11..66..  PPaatttteerrnnss

        22..  SSccrreeeennss  aanndd  MMeennuuss

              22..11..  IInnddeexx
              22..22..  PPaaggeerr
              22..33..  FFiillee  BBrroowwsseerr
              22..44..  SSiiddeebbaarr
              22..55..  HHeellpp
              22..66..  CCoommppoossee  MMeennuu
              22..77..  AAlliiaass  MMeennuu
              22..88..  AAttttaacchhmmeenntt  MMeennuu
              22..99..  KKeeyy  MMeennuu

        33..  MMoovviinngg  AArroouunndd  iinn  MMeennuuss
        44..  EEddiittiinngg  IInnppuutt  FFiieellddss
        55..  RReeaaddiinngg  MMaaiill  --  TThhee  IInnddeexx  aanndd  PPaaggeerr

              55..11..  TThhee  MMeessssaaggee  IInnddeexx
              55..22..  TThhee  PPaaggeerr
              55..33..  TThhrreeaaddeedd  MMooddee
              55..44..  MMiisscceellllaanneeoouuss  FFuunnccttiioonnss

        66..  SSeennddiinngg  MMaaiill

              66..11..  CCoommppoossiinngg  nneeww  mmeessssaaggeess
              66..22..  RReeppllyyiinngg
              66..33..  EEddiittiinngg  tthhee  mmeessssaaggee  hheeaaddeerr
              66..44..  UUssiinngg  MMuutttt--nngg  wwiitthh  PPGGPP
              66..55..  SSeennddiinngg  aannoonnyymmoouuss  mmeessssaaggeess  vviiaa  mmiixxmmaasstteerr

        77..  FFoorrwwaarrddiinngg  aanndd  BBoouunncciinngg  MMaaiill
        88..  PPoossttppoonniinngg  MMaaiill

   33..  CCoonnffiigguurraattiioonn

        11..  LLooccaattiioonnss  ooff  CCoonnffiigguurraattiioonn  FFiilleess
        22..  BBaassiicc  SSyynnttaaxx  ooff  IInniittiiaalliizzaattiioonn  FFiilleess
        33..  EExxppaannssiioonn  wwiitthhiinn  vvaarriiaabblleess

              33..11..  CCoommmmaannddss''  OOuuttppuutt
              33..22..  EEnnvviirroonnmmeenntt  VVaarriiaabblleess
              33..33..  CCoonnffiigguurraattiioonn  VVaarriiaabblleess
              33..44..  SSeellff--DDeeffiinneedd  VVaarriiaabblleess
              33..55..  PPrree--DDeeffiinneedd  VVaarriiaabblleess
              33..66..  TTyyppee  CCoonnvveerrssiioonnss

        44..  DDeeffiinniinngg//UUssiinngg  aalliiaasseess
        55..  CChhaannggiinngg  tthhee  ddeeffaauulltt  kkeeyy  bbiinnddiinnggss
        66..  DDeeffiinniinngg  aalliiaasseess  ffoorr  cchhaarraacctteerr  sseettss
        77..  SSeettttiinngg  vvaarriiaabblleess  bbaasseedd  uuppoonn  mmaaiillbbooxx
        88..  KKeeyybbooaarrdd  mmaaccrrooss
        99..  UUssiinngg  ccoolloorr  aanndd  mmoonnoo  vviiddeeoo  aattttrriibbuutteess
        1100..  IIggnnoorriinngg  ((wweeeeddiinngg))  uunnwwaanntteedd  mmeessssaaggee  hheeaaddeerrss
        1111..  AAlltteerrnnaattiivvee  aaddddrreesssseess
        1122..  FFoorrmmaatt  ==  FFlloowweedd

              1122..11..  IInnttrroodduuccttiioonn
              1122..22..  RReecceeiivviinngg::  DDiissppllaayy  SSeettuupp
              1122..33..  SSeennddiinngg
              1122..44..  AAddddiittiioonnaall  NNootteess

        1133..  MMaaiilliinngg  lliissttss
        1144..  UUssiinngg  MMuullttiippllee  ssppooooll  mmaaiillbbooxxeess
        1155..  DDeeffiinniinngg  mmaaiillbbooxxeess  wwhhiicchh  rreecceeiivvee  mmaaiill
        1166..  UUsseerr  ddeeffiinneedd  hheeaaddeerrss
        1177..  DDeeffiinniinngg  tthhee  oorrddeerr  ooff  hheeaaddeerrss  wwhheenn  vviieewwiinngg  mmeessssaaggeess
        1188..  SSppeecciiffyy  ddeeffaauulltt  ssaavvee  ffiilleennaammee
        1199..  SSppeecciiffyy  ddeeffaauulltt  FFcccc::  mmaaiillbbooxx  wwhheenn  ccoommppoossiinngg
        2200..  SSppeecciiffyy  ddeeffaauulltt  ssaavvee  ffiilleennaammee  aanndd  ddeeffaauulltt  FFcccc::  mmaaiillbbooxx  aatt
                oonnccee

        2211..  CChhaannggee  sseettttiinnggss  bbaasseedd  uuppoonn  mmeessssaaggee  rreecciippiieennttss
        2222..  CChhaannggee  sseettttiinnggss  bbeeffoorree  ffoorrmmaattttiinngg  aa  mmeessssaaggee
        2233..  CChhoooossiinngg  tthhee  ccrryyppttooggrraapphhiicc  kkeeyy  ooff  tthhee  rreecciippiieenntt
        2244..  AAddddiinngg  kkeeyy  sseeqquueenncceess  ttoo  tthhee  kkeeyybbooaarrdd  bbuuffffeerr
        2255..  EExxeeccuuttiinngg  ffuunnccttiioonnss
        2266..  MMeessssaaggee  SSccoorriinngg
        2277..  SSppaamm  ddeetteeccttiioonn
        2288..  SSeettttiinngg  vvaarriiaabblleess
        2299..  RReeaaddiinngg  iinniittiiaalliizzaattiioonn  ccoommmmaannddss  ffrroomm  aannootthheerr  ffiillee
        3300..  RReemmoovviinngg  hhooookkss
        3311..  SShhaarriinngg  SSeettuuppss

              3311..11..  CChhaarraacctteerr  SSeettss
              3311..22..  MMoodduullaarriizzaattiioonn
              3311..33..  CCoonnddiittiioonnaall  ppaarrttss

        3322..  OObbssoolleettee  VVaarriiaabblleess

   44..  AAddvvaanncceedd  UUssaaggee

        11..  RReegguullaarr  EExxpprreessssiioonnss
        22..  PPaatttteerrnnss

              22..11..  CCoommpplleexx  PPaatttteerrnnss
              22..22..  PPaatttteerrnnss  aanndd  DDaatteess

        33..  FFoorrmmaatt  SSttrriinnggss

              33..11..  IInnttrroodduuccttiioonn
              33..22..  CCoonnddiittiioonnaall  EExxppaannssiioonn
              33..33..  MMooddiiffiiccaattiioonnss  aanndd  PPaaddddiinngg

        44..  UUssiinngg  TTaaggss
        55..  UUssiinngg  HHooookkss

              55..11..  MMeessssaaggee  MMaattcchhiinngg  iinn  HHooookkss

        66..  UUssiinngg  tthhee  ssiiddeebbaarr
        77..  EExxtteerrnnaall  AAddddrreessss  QQuueerriieess
        88..  MMaaiillbbooxx  FFoorrmmaattss
        99..  MMaaiillbbooxx  SShhoorrttccuuttss
        1100..  HHaannddlliinngg  MMaaiilliinngg  LLiissttss
        1111..  EEddiittiinngg  tthhrreeaaddss

              1111..11..  LLiinnkkiinngg  tthhrreeaaddss
              1111..22..  BBrreeaakkiinngg  tthhrreeaaddss

        1122..  DDeelliivveerryy  SSttaattuuss  NNoottiiffiiccaattiioonn  ((DDSSNN))  SSuuppppoorrtt
        1133..  PPOOPP33  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))
        1144..  IIMMAAPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))

              1144..11..  TThhee  FFoollddeerr  BBrroowwsseerr
              1144..22..  AAuutthheennttiiccaattiioonn

        1155..  NNNNTTPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))

              1155..11..  AAggaaiinn::  SSccoorriinngg

        1166..  SSMMTTPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))
        1177..  MMaannaaggiinngg  mmuullttiippllee  IIMMAAPP//PPOOPP//NNNNTTPP  aaccccoouunnttss  ((OOPPTTIIOONNAALL))
        1188..  SSttaarrtt  aa  WWWWWW  BBrroowwsseerr  oonn  UURRLLss  ((EEXXTTEERRNNAALL))
        1199..  CCoommpprreesssseedd  ffoollddeerrss  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))

              1199..11..  OOppeenn  aa  ccoommpprreesssseedd  mmaaiillbbooxx  ffoorr  rreeaaddiinngg
              1199..22..  WWrriittee  aa  ccoommpprreesssseedd  mmaaiillbbooxx
              1199..33..  AAppppeenndd  aa  mmeessssaaggee  ttoo  aa  ccoommpprreesssseedd  mmaaiillbbooxx
              1199..44..  EEnnccrryypptteedd  ffoollddeerrss

   55..  MMuutttt--nngg''ss  MMIIMMEE  SSuuppppoorrtt

        11..  UUssiinngg  MMIIMMEE  iinn  MMuutttt

              11..11..  VViieewwiinngg  MMIIMMEE  mmeessssaaggeess  iinn  tthhee  ppaaggeerr
              11..22..  TThhee  AAttttaacchhmmeenntt  MMeennuu
              11..33..  TThhee  CCoommppoossee  MMeennuu

        22..  MMIIMMEE  TTyyppee  ccoonnffiigguurraattiioonn  wwiitthh  mmiimmee..ttyyppeess
        33..  MMIIMMEE  VViieewweerr  ccoonnffiigguurraattiioonn  wwiitthh  mmaaiillccaapp

              33..11..  TThhee  BBaassiiccss  ooff  tthhee  mmaaiillccaapp  ffiillee
              33..22..  SSeeccuurree  uussee  ooff  mmaaiillccaapp
              33..33..  AAddvvaanncceedd  mmaaiillccaapp  UUssaaggee
              33..44..  EExxaammppllee  mmaaiillccaapp  ffiilleess

        44..  MMIIMMEE  AAuuttoovviieeww
        55..  MMIIMMEE  MMuullttiippaarrtt//AAlltteerrnnaattiivvee
        66..  AAttttaacchhmmeenntt  SSeeaarrcchhiinngg  aanndd  CCoouunnttiinngg
        77..  MMIIMMEE  LLooookkuupp

   66..  SSeeccuurriittyy  CCoonnssiiddeerraattiioonnss

        11..  PPaasssswwoorrddss
        22..  TTeemmppoorraarryy  FFiilleess
        33..  IInnffoorrmmaattiioonn  LLeeaakkss

              33..11..  MMeessssaaggee--IIDD::  hheeaaddeerrss
              33..22..  mmaaiillttoo::--ssttyyllee  lliinnkkss

        44..  EExxtteerrnnaall  aapppplliiccaattiioonnss

              44..11..  mmaaiillccaapp
              44..22..  OOtthheerr

   77..  RReeffeerreennccee

        11..  CCoommmmaanndd  lliinnee  ooppttiioonnss
        22..  PPaatttteerrnnss
        33..  CCoonnffiigguurraattiioonn  CCoommmmaannddss
        44..  CCoonnffiigguurraattiioonn  vvaarriiaabblleess
        55..  FFuunnccttiioonnss

              55..11..  ggeenneerriicc
              55..22..  iinnddeexx
              55..33..  ppaaggeerr
              55..44..  aalliiaass
              55..55..  qquueerryy
              55..66..  aattttaacchh
              55..77..  ccoommppoossee
              55..88..  ppoossttppoonnee
              55..99..  bbrroowwsseerr
              55..1100..  ppggpp
              55..1111..  eeddiittoorr
              55..1122..  ssiiddeebbaarr

   AA..  AAcckknnoowwlleeddggmmeennttss
   BB..  HHaacckkiinngg  DDooccuummeennttaattiioonn
   IInnddeexx

   _L_i_s_t_ _o_f_ _T_a_b_l_e_s

   2.1. MMoosstt  ccoommmmoonnllyy  uusseedd  mmoovveemmeenntt  bbiinnddiinnggss
   2.2. LLiinnee  EEddiittoorr  FFuunnccttiioonnss
   2.3. MMoosstt  ccoommmmoonnllyy  uusseedd  IInnddeexx  BBiinnddiinnggss
   2.4. MMoosstt  ccoommmmoonnllyy  uusseedd  PPaaggeerr  BBiinnddiinnggss
   2.5. AANNSSII  EEssccaappee  SSeeqquueenncceess
   2.6. AANNSSII  CCoolloorrss
   2.7. MMoosstt  ccoommmmoonnllyy  uusseedd  tthhrreeaadd--rreellaatteedd  bbiinnddiinnggss
   2.8. MMoosstt  ccoommmmoonnllyy  uusseedd  MMaaiill  CCoommppoossiittiioonn  BBiinnddiinnggss
   2.9. MMoosstt  ccoommmmoonnllyy  uusseedd  CCoommppoossee  MMeennuu  BBiinnddiinnggss
   2.10. PPGGPP  KKeeyy  MMeennuu  FFllaaggss
   3.1. AAlltteerrnnaattiivvee  KKeeyy  NNaammeess
   7.1. RReeffeerreennccee::  CCoommmmaanndd  LLiinnee  OOppttiioonnss
   7.2. RReeffeerreennccee::  PPaatttteerrnnss
   7.3. RReeffeerreennccee::  OObbssoolleettee  VVaarriiaabblleess
   7.4. RReeffeerreennccee::  DDeeffaauulltt  GGeenneerriicc  FFuunnccttiioonn  BBiinnddiinnggss
   7.5. RReeffeerreennccee::  DDeeffaauulltt  IInnddeexx  FFuunnccttiioonn  BBiinnddiinnggss
   7.6. RReeffeerreennccee::  DDeeffaauulltt  PPaaggeerr  FFuunnccttiioonn  BBiinnddiinnggss
   7.7. RReeffeerreennccee::  DDeeffaauulltt  AAlliiaass  MMeennuu  FFuunnccttiioonn  BBiinnddiinnggss
   7.8. RReeffeerreennccee::  DDeeffaauulltt  QQuueerryy  MMeennuu  FFuunnccttiioonn  BBiinnddiinnggss
   7.9. RReeffeerreennccee::  DDeeffaauulltt  AAttttaacchhmmeenntt  MMeennuu  FFuunnccttiioonn  BBiinnddiinnggss
   7.10. RReeffeerreennccee::  DDeeffaauulltt  CCoommppoossee  MMeennuu  FFuunnccttiioonn  BBiinnddiinnggss
   7.11. RReeffeerreennccee::  DDeeffaauulltt  PPoossttppoonnee  MMeennuu  FFuunnccttiioonn  BBiinnddiinnggss
   7.12. RReeffeerreennccee::  DDeeffaauulltt  BBrroowwsseerr  MMeennuu  FFuunnccttiioonn  BBiinnddiinnggss
   7.13. RReeffeerreennccee::  DDeeffaauulltt  PPGGPP  MMeennuu  FFuunnccttiioonn  BBiinnddiinnggss
   7.14. RReeffeerreennccee::  DDeeffaauulltt  EEddiittoorr  FFuunnccttiioonn  BBiinnddiinnggss
   7.15. RReeffeerreennee::  DDeeffaauulltt  SSiiddeebbaarr  FFuunnccttiioonn  BBiinnddiinnggss

Chapter 1. Introduction

   _T_a_b_l_e_ _o_f_ _C_o_n_t_e_n_t_s

   11..  OOvveerrvviieeww
   22..  MMuutttt--nngg  HHoommee  PPaaggee
   33..  MMaaiilliinngg  LLiissttss
   44..  SSooffttwwaarree  DDiissttrriibbuuttiioonn  SSiitteess
   55..  IIRRCC
   66..  WWeebblloogg
   77..  CCooppyyrriigghhtt
   88..  MMaannuuaall  CCoonnvveennttiioonnss

1. Overview

   _M_u_t_t_-_n_g is a small but very powerful text-based MIME mail client.
   Mutt-ng is highly configurable, and is well suited to the mail power
   user with advanced features like key bindings, keyboard macros, mail
   threading, regular expression searches and a powerful pattern matching
   language for selecting groups of messages.

   This documentation additionally contains documentation to _M_u_t_t_-_N_G ,a
   fork from Mutt with the goal to fix all the little annoyances of Mutt,
   to integrate all the Mutt patches that are floating around in the web,
   and to add other new features. Features specific to Mutt-ng will be
   discussed in an extra section. Don't be confused when most of the
   documentation talk about Mutt and not Mutt-ng, Mutt-ng contains all
   Mutt features, plus many more.

2. Mutt-ng Home Page

   <<hhttttpp::////wwwwww..mmuuttttnngg..oorrgg//>>

3. Mailing Lists

     * <mmuutttt--nngg--uusseerrss@@lliissttss..bbeerrlliiooss..ddee>: This is where the mutt-ng user
       support happens.
     * <mmuutttt--nngg--ddeevveell@@lliissttss..bbeerrlliiooss..ddee>: The development mailing list for
       mutt-ng

4. Software Distribution Sites

   So far, there are no official releases of Mutt-ng, but you can
   download daily snapshots from <<hhttttpp::////mmuutttt--nngg..bbeerrlliiooss..ddee//ssnnaappsshhoottss//>>

5. IRC

   Visit channel _#_m_u_t_t_n_g on iirrcc..ffrreeeennooddee..nneett  ((wwwwww..ffrreeeennooddee..nneett)) to chat
   with other people interested in Mutt-ng.

6. Weblog

   If you want to read fresh news about the latest development in
   Mutt-ng, and get informed about stuff like interesting,
   Mutt-ng-related articles and packages for your favorite distribution,
   you can read and/or subscribe to our MMuutttt--nngg  ddeevveellooppmmeenntt  wweebblloogg.

7. Copyright

   Mutt is Copyright (C) 1996-2000 Michael R. Elkins <me@cs.hmc.edu> and
   others

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or (at
   your option) any later version.

   This program is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301, USA.

8. Manual Conventions

   This manual contains several (hopefully consistent) conventions to
   specially layout different items in different fashions.

     * Configuration and environment variables will be printed in a
       typewriter font and both prefixed with a dollar sign as it's
       common for UNIX-like environments. Configuration variables are
       lower-case only while environment variables are upper-case only.
       $$iimmaapp__mmaaiill__cchheecckk is a configuration variable while $EDITOR is an
       environment variable.
     * Muttng-specific functions are enclosed in <> and printed in a
       typewriter font, too, as in <sync-mailbox>.
     * As common for UNIX-like environments, references to manual pages
       are printed with the section enclosed in braces, as in vi(1) or
       muttngrc(5). Execute man [section] [name] to view the manual page.
     * Keys are presented in the following way: ordinary keys are just
       given as-is, e.g. q. Control characters are prefixed with C- (e.g.
       the screen can be redraw by pressing C-L) and E- for Escape, e.g.
       a folder can be opened read-only with E-c.

   If, while reading this fine manual, you find any inconsistencies of
   whatever kind, please contact the developers via
   <mmuutttt--nngg--ddeevveell@@lliissttss..bbeerrlliiooss..ddee> to report it.

Chapter 2. Getting Started

   _T_a_b_l_e_ _o_f_ _C_o_n_t_e_n_t_s

   11..  BBaassiicc  CCoonncceeppttss

        11..11..  SSccrreeeennss  aanndd  MMeennuuss
        11..22..  CCoonnffiigguurraattiioonn
        11..33..  FFuunnccttiioonnss
        11..44..  IInntteerraaccttiioonn
        11..55..  MMoodduullaarriizzaattiioonn
        11..66..  PPaatttteerrnnss

   22..  SSccrreeeennss  aanndd  MMeennuuss

        22..11..  IInnddeexx
        22..22..  PPaaggeerr
        22..33..  FFiillee  BBrroowwsseerr
        22..44..  SSiiddeebbaarr
        22..55..  HHeellpp
        22..66..  CCoommppoossee  MMeennuu
        22..77..  AAlliiaass  MMeennuu
        22..88..  AAttttaacchhmmeenntt  MMeennuu
        22..99..  KKeeyy  MMeennuu

   33..  MMoovviinngg  AArroouunndd  iinn  MMeennuuss
   44..  EEddiittiinngg  IInnppuutt  FFiieellddss
   55..  RReeaaddiinngg  MMaaiill  --  TThhee  IInnddeexx  aanndd  PPaaggeerr

        55..11..  TThhee  MMeessssaaggee  IInnddeexx
        55..22..  TThhee  PPaaggeerr
        55..33..  TThhrreeaaddeedd  MMooddee
        55..44..  MMiisscceellllaanneeoouuss  FFuunnccttiioonnss

   66..  SSeennddiinngg  MMaaiill

        66..11..  CCoommppoossiinngg  nneeww  mmeessssaaggeess
        66..22..  RReeppllyyiinngg
        66..33..  EEddiittiinngg  tthhee  mmeessssaaggee  hheeaaddeerr
        66..44..  UUssiinngg  MMuutttt--nngg  wwiitthh  PPGGPP
        66..55..  SSeennddiinngg  aannoonnyymmoouuss  mmeessssaaggeess  vviiaa  mmiixxmmaasstteerr

   77..  FFoorrwwaarrddiinngg  aanndd  BBoouunncciinngg  MMaaiill
   88..  PPoossttppoonniinngg  MMaaiill

1. Basic Concepts

1.1. Screens and Menus

   mutt-ng offers different screens of which every has its special
   purpose:

     * The _i_n_d_e_x displays the contents of the currently opened mailbox.
     * The _p_a_g_e_r is responsible for displaying messages, that is, the
       header, the body and all attached parts.
     * The _f_i_l_e_ _b_r_o_w_s_e_r offers operations on and displays information of
       all folders mutt-ng should watch for mail.
     * The _s_i_d_e_b_a_r offers a permanent view of which mailboxes contain how
       many total, new and/or flagged mails.
     * The _h_e_l_p_ _s_c_r_e_e_n lists for all currently available commands how to
       invoke them as well as a short description.
     * The _c_o_m_p_o_s_e menu is a comfortable interface take last actions
       before sending mail: change subjects, attach files, remove
       attachements, etc.
     * The _a_t_t_a_c_h_e_m_e_n_t menu gives a summary and the tree structure of the
       attachements of the current message.
     * The _a_l_i_a_s menu lists all or a fraction of the aliases a user has
       defined.
     * The _k_e_y menu used in connection with encryption lets users choose
       the right key to encrypt with.

   When mutt-ng is started without any further options, it'll open the
   users default mailbox and display the index.

1.2. Configuration

   Mutt-ng does _n_o_t feature an internal configuration interface or menu
   due to the simple fact that this would be too complex to handle
   (currently there are several _h_u_n_d_r_e_d variables which fine-tune the
   behaviour.)

   Mutt-ng is configured using configuration files which allow users to
   add comments or manage them via version control systems to ease
   maintenance.

   Also, mutt-ng comes with a shell script named grml-muttng kindly
   contributed by users which really helps and eases the creation of a
   user's configuration file. When downloading the source code via a
   snapshot or via subversion, it can be found in the contrib directory.

1.3. Functions

   Mutt-ng offers great flexibility due to the use of functions:
   internally, every action a user can make mutt-ng perform is named
   ``function.'' Those functions are assigned to keys (or even key
   sequences) and may be completely adjusted to user's needs. The basic
   idea is that the impatient users get a very intuitive interface to
   start off with and advanced users virtually get no limits to
   adjustments.

1.4. Interaction

   Mutt-ng has two basic concepts of user interaction:

    1. There is one dedicated line on the screen used to query the user
       for input, issue any command, query variables and display error
       and informational messages. As for every type of user input, this
       requires manual action leading to the need of input.
    2. The automatized interface for interaction are the so called _h_o_o_k_s.
       Hooks specify actions the user wants to be performed at
       well-defined situations: what to do when entering which folder,
       what to do when displaying or replying to what kind of message,
       etc. These are optional, i.e. a user doesn't need to specify them
       but can do so.

1.5. Modularization

   Although mutt-ng has many functionality built-in, many features can be
   delegated to external tools to increase flexibility: users can define
   programs to filter a message through before displaying, users can use
   any program they want for displaying a message, message types (such as
   PDF or PostScript) for which mutt-ng doesn't have a built-in filter
   can be rendered by arbitrary tools and so forth. Although mutt-ng has
   an alias mechanism built-in, it features using external tools to query
   for nearly every type of addresses from sources like LDAP, databases
   or just the list of locally known users.

1.6. Patterns

   Mutt-ng has a built-in pattern matching ``language'' which is as
   widely used as possible to present a consistent interface to users.
   The same ``pattern terms'' can be used for searching, scoring, message
   selection and much more.

2. Screens and Menus

2.1. Index

   The index is the screen that you usually see first when you start
   mutt-ng. It gives an overview over your emails in the currently opened
   mailbox. By default, this is your system mailbox. The information you
   see in the index is a list of emails, each with its number on the
   left, its flags (new email, important email, email that has been
   forwarded or replied to, tagged email, ...), the date when email was
   sent, its sender, the email size, and the subject. Additionally, the
   index also shows thread hierarchies: when you reply to an email, and
   the other person replies back, you can see the other's person email in
   a "sub-tree" below. This is especially useful for personal email
   between a group of people or when you've subscribed to mailing lists.

2.2. Pager

   The pager is responsible for showing the email content. On the top of
   the pager you have an overview over the most important email headers
   like the sender, the recipient, the subject, and much more
   information. How much information you actually see depends on your
   configuration, which we'll describe below.

   Below the headers, you see the email body which usually contains the
   message. If the email contains any attachments, you will see more
   information about them below the email body, or, if the attachments
   are text files, you can view them directly in the pager.

   To give the user a good overview, it is possible to configure mutt-ng
   to show different things in the pager with different colors. Virtually
   everything that can be described with a regular expression can be
   colored, e.g. URLs, email addresses or smileys.

2.3. File Browser

   The file browser is the interface to the local or remote file system.
   When selecting a mailbox to open, the browser allows custom sorting of
   items, limiting the items shown by a regular expression and a freely
   adjustable format of what to display in which way. It also allows for
   easy navigation through the file system when selecting file(s) to
   attach to a message, select multiple files to attach and many more.

2.4. Sidebar

   The sidebar comes in handy to manage mails which are spread over
   different folders. All folders users setup mutt-ng to watch for new
   mail will be listed. The listing includes not only the name but also
   the number of total messages, the number of new and flagged messages.
   Items with new mail may be colored different from those with flagged
   mail, items may be shortened or compress if they're they to long to be
   printed in full form so that by abbreviated names, user still now what
   the name stands for.

2.5. Help

   The help screen is meant to offer a quick help to the user. It lists
   the current configuration of key bindings and their associated
   commands including a short description, and currently unbound
   functions that still need to be associated with a key binding (or
   alternatively, they can be called via the mutt-ng command prompt).

2.6. Compose Menu

   The compose menu features a split screen containing the information
   which really matter before actually sending a message by mail or
   posting an article to a newsgroup: who gets the message as what
   (recipient, newsgroup, who gets what kind of copy). Additionally,
   users may set security options like deciding whether to sign, encrypt
   or sign and encrypt a message with/for what keys.

   Also, it's used to attach messages, news articles or files to a
   message, to re-edit any attachment including the message itself.

2.7. Alias Menu

   The alias menu is used to help users finding the recipients of
   messages. For users who need to contact many people, there's no need
   to remember addresses or names completely because it allows for
   searching, too. The alias mechanism and thus the alias menu also
   features grouping several addresses by a shorter nickname, the actual
   alias, so that users don't have to select each single recipient
   manually.

2.8. Attachment Menu

   As will be later discussed in detail, mutt-ng features a good and
   stable MIME implementation, that is, is greatly supports sending and
   receiving messages of arbitrary type. The attachment menu displays a
   message's structure in detail: what content parts are attached to
   which parent part (which gives a true tree structure), which type is
   of what type and what size. Single parts may saved, deleted or
   modified to offer great and easy access to message's internals.

2.9. Key Menu

   FIXME

3. Moving Around in Menus

   Information is presented in menus, very similar to ELM. Here is a
   tableshowing the common keys used to navigate menus in Mutt-ng.

   _T_a_b_l_e_ _2_._1_._ _M_o_s_t_ _c_o_m_m_o_n_l_y_ _u_s_e_d_ _m_o_v_e_m_e_n_t_ _b_i_n_d_i_n_g_s
   Key         Function         Description
   j or Down   <next-entry>     move to the next entry
   k or Up     <previous-entry> move to the previous entry
   z or PageDn <page-down>      go to the next page
   Z or PageUp <page-up>        go to the previous page
   = or Home   <first-entry>    jump to the first entry
   * or End    <last-entry>     jump to the last entry
   q           <quit>           exit the current menu
   ?           <help>           list all key bindings for the current menu

4. Editing Input Fields

   Mutt-ng has a builtin line editor which is used as the primary way to
   input textual data such as email addresses or filenames. The keys used
   to move around while editing are very similar to those of Emacs.

   _T_a_b_l_e_ _2_._2_._ _L_i_n_e_ _E_d_i_t_o_r_ _F_u_n_c_t_i_o_n_s
   Key           Function          Description
   C-A or Home   <bol>             move to the start of the line
   C-B or Left   <backward-char>   move back one char
   E-B           <backward-word>   move back one word
   C-D or Delete <delete-char>     delete the char under the cursor
   C-E or End    <eol>             move to the end of the line
   C-F or Right  <forward-char>    move forward one char
   E-F           <forward-word>    move forward one word
   Tab           <complete>        complete filename or alias
   C-T           <complete-query>  complete address with query
   C-K           <kill-eol>        delete to the end of the line
   E-d           <kill-eow>        delete to the end of the word
   C-W           <kill-word>       kill the word in front of the cursor
   C-U           <kill-line>       delete entire line
   C-V           <quote-char>      quote the next typed key
   Up            <history-up>      recall previous string from history
   Down          <history-down>    recall next string from history
   BackSpace     <backspace>       kill the char in front of the cursor
   E-u           <upcase-word>     convert word to upper case
   E-l           <downcase-word>   convert word to lower case
   E-c           <capitalize-word> capitalize the word
   C-G                             abort
   Return                          finish editing

   You can remap the _e_d_i_t_o_r functions using the bbiinndd command. For
   example, to make the _D_e_l_e_t_e key delete the character in front of the
   cursor rather than under, you could use

   bind editor <delete> backspace

5. Reading Mail - The Index and Pager

   Similar to many other mail clients, there are two modes in which mail
   isread in Mutt-ng. The first is the index of messages in the mailbox,
   which is called the ``index'' in Mutt-ng. The second mode is the
   display of the message contents. This is called the ``pager.''

   The next few sections describe the functions provided in each of these
   modes.

5.1. The Message Index

   _T_a_b_l_e_ _2_._3_._ _M_o_s_t_ _c_o_m_m_o_n_l_y_ _u_s_e_d_ _I_n_d_e_x_ _B_i_n_d_i_n_g_s
   Key    Function Description
   c               change to a different mailbox
   E-c             change to a folder in read-only mode
   C               copy the current message to another mailbox
   E-C             decode a message and copy it to a folder
   E-s             decode a message and save it to a folder
   D               delete messages matching a pattern
   d               delete the current message
   F               mark as important
   l               show messages matching a pattern
   N               mark message as new
   o               change the current sort method
   O               reverse sort the mailbox
   q               save changes and exit
   s               save-message
   T               tag messages matching a pattern
   t               toggle the tag on a message
   E-t             toggle tag on entire message thread
   U               undelete messages matching a pattern
   u               undelete-message
   v               view-attachments
   x               abort changes and exit
   Return          display-message
   Tab             jump to the next new or unread message
   @               show the author's full e-mail address
   $               save changes to mailbox
   /               search
   E-/             search-reverse
   C-L             clear and redraw the screen
   C-T             untag messages matching a pattern

5.1.1. Status Flags

   In addition to who sent the message and the subject, a short summary
   of the disposition of each message is printed beside the message
   number. Zero or more of the following ``flags'' may appear, which
   mean:

   D
          message is deleted (is marked for deletion)

   d
          message have attachments marked for deletion

   K
          contains a PGP public key

   N
          message is new

   O
          message is old

   P
          message is PGP encrypted

   r
          message has been replied to

   S
          message is signed, and the signature is succesfully verified

   s
          message is signed

   !
          message is flagged

   *
          message is tagged

   Some of the status flags can be turned on or off using
     * _s_e_t_-_f_l_a_g (default: w)
     * _c_l_e_a_r_-_f_l_a_g (default: W)

   Furthermore, the following flags reflect who the message is addressed
   to. They can be customized with the $$ttoo__cchhaarrss variable.

   +
          message is to you and you only

   T
          message is to you, but also to or cc'ed to others

   C
          message is cc'ed to you

   F
          message is from you

   L
          message is sent to a subscribed mailing list

5.2. The Pager

   By default, Mutt-ng uses its builtin pager to display the body of
   messages. The pager is very similar to the Unix program _l_e_s_s though
   not nearly as featureful.

   _T_a_b_l_e_ _2_._4_._ _M_o_s_t_ _c_o_m_m_o_n_l_y_ _u_s_e_d_ _P_a_g_e_r_ _B_i_n_d_i_n_g_s
   Key Function Description
   Return go down one line
   Space display the next page (or next message if at the end of a
   message)
   - go back to the previous page
   n search for next match
   S skip beyond quoted text
   T toggle display of quoted text
   ? show key bindings
   / search for a regular expression (pattern)
   E-/ search backwards for a regular expression
   \ toggle search pattern coloring
   ^ jump to the top of the message

   In addition, many of the functions from the _i_n_d_e_x are available in the
   pager, such as _d_e_l_e_t_e_-_m_e_s_s_a_g_e or _c_o_p_y_-_m_e_s_s_a_g_e (this is one advantage
   over using an external pager to view messages).

   Also, the internal pager supports a couple other advanced features.
   For one, it will accept and translate the ``standard'' nroff sequences
   forbold and underline. These sequences are a series of either the
   letter, backspace (C-H), the letter again for bold or the letter,
   backspace, _ for denoting underline. Mutt-ng will attempt to display
   these in bold and underline respectively if your terminal supports
   them. If not, you can use the bold and underline ccoolloorr objects to
   specify a color or mono attribute for them.

   Additionally, the internal pager supports the ANSI escape sequences
   for character attributes. Mutt-ng translates them into the correct
   color and character settings. The sequences Mutt-ng supports are: ESC
   [ Ps;Ps;Ps;...;Ps m (see table below for possible values for Ps).

   _T_a_b_l_e_ _2_._5_._ _A_N_S_I_ _E_s_c_a_p_e_ _S_e_q_u_e_n_c_e_s
   Value Attribute
   0     All Attributes Off
   1     Bold on
   4     Underline on
   5     Blink on
   7     Reverse video on
   3x    Foreground color is x (see table below)
   4x    Background color is x (see table below)

   _T_a_b_l_e_ _2_._6_._ _A_N_S_I_ _C_o_l_o_r_s
   Number Color
   0      black
   1      red
   2      green
   3      yellow
   4      blue
   5      magenta
   6      cyan
   7      white

   Mutt-ng uses these attributes for handling text/enriched messages, and
   they can also be used by an external aauuttoo__vviieeww script for highlighting
   purposes. _N_o_t_e_: If you change the colors for your display, for example
   by changing the color associated with color2 for your xterm, then that
   color will be used instead of green.

5.3. Threaded Mode

   When the mailbox is ssoorrtteedd by _t_h_r_e_a_d_s ,there are a few additional
   functions available in the _i_n_d_e_x and _p_a_g_e_r modes.

   _T_a_b_l_e_ _2_._7_._ _M_o_s_t_ _c_o_m_m_o_n_l_y_ _u_s_e_d_ _t_h_r_e_a_d_-_r_e_l_a_t_e_d_ _b_i_n_d_i_n_g_s
   Key Function Description
   C-D <delete-thread> delete all messages in the current thread
   C-U <undelete-thread> undelete all messages in the current thread
   C-N <next-thread> jump to the start of the next thread
   C-P <previous-thread> jump to the start of the previous thread
   C-R <read-thread> mark the current thread as read
   E-d <delete-subthread> delete all messages in the current subthread
   E-u <undelete-subthread> undelete all messages in the current
   subthread
   E-n <next-subthread> jump to the start of the next subthread
   E-p <previous-subthread> jump to the start of the previous subthread
   E-r <read-subthread> mark the current subthread as read
   E-t <tag-thread> toggle the tag on the current thread
   E-v <collapse-thread> toggle collapse for the current thread
   E-V <collapse-all> toggle collapse for all threads
   P <parent-message> jump to parent message in thread

   _N_o_t_e_: Collapsing a thread displays only the first message in the
   thread and hides the others. This is useful when threads contain so
   many messages that you can only see a handful of threads onthe screen.
   See %M in $$iinnddeexx__ffoorrmmaatt.

   For example, you could use %?M?(#%03M)&(%4l)? in $$iinnddeexx__ffoorrmmaatt to
   optionally display the number of hidden messages if the thread is
   collapsed.

   See also the $$ssttrriicctt__tthhrreeaaddss variable.

5.4. Miscellaneous Functions

   <create-alias> (default: a)

   Creates a new alias based upon the current message (or prompts for a
   new one). Once editing is complete, an aalliiaass command is added to the
   file specified by the $$aalliiaass__ffiillee variable for future use. _N_o_t_e_:
   Specifying an $$aalliiaass__ffiillee does not add the aliases specified there-in,
   you must also ssoouurrccee the file.

   <check-traditional-pgp> (default: E-P)

   This function will search the current message for content signed or
   encrypted with PGP the "traditional" way, that is, without proper MIME
   tagging. Technically, this function will temporarily change the MIME
   content types of the body parts containing PGP data; this is similar
   to the <edit-type> function's effect.

   <display-toggle-weed> (default: h)

   Toggles the weeding of message header fields specified by iiggnnoorree
   commands.

   <edit> (default: e)

   This command (available in the ``index'' and ``pager'') allows you to
   edit the raw current message as it's present in the mail folder. After
   you have finished editing, the changed message will be appended to the
   current folder, and the original message will be marked for deletion.

   <edit-type> (default: ) (default: C-E on the attachment menu, and in
   the pager and index menus; C-T on the compose menu)

   This command is used to temporarily edit an attachment's content type
   to fix, for instance, bogus character set parameters. When invoked
   from the index or from the pager, you'll have the opportunity to edit
   the top-level attachment's content type. On the aattttaacchh--mmeennuu, you can
   change any attachment's content type. These changes are not
   persistent, and get lost upon changing folders.

   Note that this command is also available on the ccoommppoossee--mmeennuu .There,
   it's used to fine-tune the properties of attachments you are going to
   send.

   <enter-command> (default: :)

   This command is used to execute any command you would normally put in
   a configuration file. A common use is to check the settings of
   variables, or in conjunction with mmaaccrroo to change settings on the fly.

   <extract-keys> (default: C-K)

   This command extracts PGP public keys from the current or tagged
   message(s) and adds them to your PGP public key ring.

   <forget-passphrase> (default: C-F)

   This command wipes the passphrase(s) from memory. It is useful, if you
   misspelled the passphrase.

   <list-reply> (default: L)

   Reply to the current or tagged message(s) by extracting any addresses
   which match the regular expressions given by the lliissttss commands, but
   also honor any Mail-Followup-To header(s) if the $$hhoonnoorr__ffoolllloowwuupp__ttoo
   configuration variable is set. Using this when replying to messages
   posted to mailing lists helps avoid duplicate copies being sent to the
   author of the message you are replying to.

   <pipe-message> (default: )

   Asks for an external Unix command and pipes the current or tagged
   message(s) to it. The variables $$ppiippee__ddeeccooddee, $$ppiippee__sspplliitt,
   $$ppiippee__ddeeccooddee and $$wwaaiitt__kkeeyy control the exact behavior of this
   function.

   <resend-message> (default: E-e)

   With resend-message, mutt takes the current message as a template for
   a new message. This function is best described as "recall from
   arbitrary folders". It can conveniently be used to forward MIME
   messages while preserving the original mail structure. Note that the
   amount of headers included here depends on the value of the $$wweeeedd
   variable.

   This function is also available from the attachment menu. You can use
   this to easily resend a message which was included with a bounce
   message as a message/rfc822 body part.

   <shell-escape> (default: !)

   Asks for an external Unix command and executes it. The $$wwaaiitt__kkeeyy can
   be used to control whether Mutt-ng will wait for a key to be pressed
   when the command returns (presumably to let the user read the output
   of the command), based on the return status of the named command.

   <toggle-quoted> (default: T)

   The _p_a_g_e_r uses the $$qquuoottee__rreeggeexxpp variable to detect quoted text when
   displaying the body of the message. This function toggles the
   displayof the quoted material in the message. It is particularly
   useful when are interested in just the response and there is a large
   amount of quoted text in the way.

   <skip-quoted> (default: S)

   This function will go to the next line of non-quoted text which come
   after a line of quoted text in the internal pager.

6. Sending Mail

   The following bindings are available in the _i_n_d_e_x for sending
   messages.

   _T_a_b_l_e_ _2_._8_._ _M_o_s_t_ _c_o_m_m_o_n_l_y_ _u_s_e_d_ _M_a_i_l_ _C_o_m_p_o_s_i_t_i_o_n_ _B_i_n_d_i_n_g_s
   Key Function      Description
   m   <compose>     compose a new message
   r   <reply>       reply to sender
   g   <group-reply> reply to all recipients
   L   <list-reply>  reply to mailing list address
   f   <forward>     forward message
   b   <bounce>      bounce (remail) message
   E-k <mail-key>    mail a PGP public key to someone

   Bouncing a message sends the message as is to the recipient you
   specify. Forwarding a message allows you to add comments or modify the
   message you are forwarding. These items are discussed in greater
   detail in the next chapter ffoorrwwaarrddiinngg--mmaaiill.

6.1. Composing new messages

   When you want to send an email using mutt-ng, simply press m on your
   keyboard. Then, mutt-ng asks for the recipient via a prompt in the
   last line:

To:

   After you've finished entering the recipient(s), press return. If you
   want to send an email to more than one recipient, separate the email
   addresses using the comma ",". Mutt-ng then asks you for the email
   subject. Again, press return after you've entered it. After that,
   mutt-ng got the most important information from you, and starts up an
   editor where you can then enter your email.

   The editor that is called is selected in the following way: you can
   e.g. set it in the mutt-ng configuration:

set editor = "vim +/^$/ -c ':set tw=72'"
set editor = "nano"
set editor = "emacs"

   If you don't set your preferred editor in your configuration, mutt-ng
   first looks whether the environment variable $VISUAL is set, and if
   so, it takes its value as editor command. Otherwise, it has a look at
   $EDITOR and takes its value if it is set. If no editor command can be
   found, mutt-ng simply assumes vi(1) to be the default editor, since
   it's the most widespread editor in the Unix world and it's pretty safe
   to assume that it is installed and available.

   When you've finished entering your message, save it and quit your
   editor. Mutt-ng will then present you with a summary screen, the
   compose menu. On the top, you see a summary of the most important
   available key commands. Below that, you see the sender, the
   recipient(s), Cc and/or Bcc recipient(s), the subject, the reply-to
   address, and optionally information where the sent email will be
   stored and whether it should be digitally signed and/or encrypted.

   Below that, you see a list of "attachments". The mail you've just
   entered before is also an attachment, but due to its special type
   (it's plain text), it will be displayed as the normal message on the
   receiver's side.

   At this point, you can add more attachments, pressing a, you can edit
   the recipient addresses, pressing t for the "To:" field, c for the
   "Cc:" field, and b for the "Bcc: field. You can also edit the subject
   the subject by simply pressing s or the email message that you've
   entered before by pressing e. You will then again return to the
   editor. You can even edit the sender, by pressing <esc>f, but this
   shall only be used with caution.

   Alternatively, you can configure mutt-ng in a way that most of the
   above settings can be edited using the editor. Therefore, you only
   need to add the following to your configuration:

set edit_headers

   Once you have finished editing the body of your mail message, you are
   returned to the _c_o_m_p_o_s_e menu. The following options are available:

   _T_a_b_l_e_ _2_._9_._ _M_o_s_t_ _c_o_m_m_o_n_l_y_ _u_s_e_d_ _C_o_m_p_o_s_e_ _M_e_n_u_ _B_i_n_d_i_n_g_s
   Key Function            Description
   a   <attach-file>       attach a file
   A   <attach-message>    attach message(s) to the message
   E-k <attach-key>        attach a PGP public key
   d   <edit-description>  edit description on attachment
   D   <detach-file>       detach a file
   t   <edit-to>           edit the To field
   E-f <edit-from>         edit the From field
   r   <edit-reply-to>     edit the Reply-To field
   c   <edit-cc>           edit the Cc field
   b   <edit-bcc>          edit the Bcc field
   y   <send-message>      send the message
   s   <edit-subject>      edit the Subject
   S   <smime-menu>        select S/MIME options
   f   <edit-fcc>          specify an ``Fcc'' mailbox
   p   <pgp-menu>          select PGP options
   P   <postpone-message>  postpone this message until later
   q   <quit>              quit (abort) sending the message
   w   <write-fcc>         write the message to a folder
   i   <ispell>            check spelling (if available on your system)
   C-F <forget-passphrase> wipe passphrase(s) from memory

   _N_o_t_e_: The attach-message function will prompt you for a folder to
   attach messages from. You can now tag messages in that folder and
   theywill be attached to the message you are sending. Note that
   certainoperations like composing a new mail, replying, forwarding,
   etc. are not permitted when you are in that folder. The %r in
   $$ssttaattuuss__ffoorrmmaatt will change to a 'A' to indicate that you are in
   attach-message mode.

6.2. Replying

6.2.1. Simple Replies

   When you want to reply to an email message, select it in the index
   menu and then press r. Mutt-ng's behaviour is then similar to the
   behaviour when you compose a message: first, you will be asked for the
   recipient, then for the subject, and then, mutt-ng will start the
   editor with the quote attribution and the quoted message. This can
   e.g. look like the example below.

On Mon, Mar 07, 2005 at 05:02:12PM +0100, Michael Svensson wrote:
> Bill, can you please send last month's progress report to Mr.
> Morgan? We also urgently need the cost estimation for the new
> production server that we want to set up before our customer's
> project will go live.

   You can start editing the email message. It is strongly recommended to
   put your answer _b_e_l_o_w the quoted text and to only quote what is really
   necessary and that you refer to. Putting your answer on top of the
   quoted message, is, although very widespread, very often not
   considered to be a polite way to answer emails.

   The quote attribution is configurable, by default it is set to
set attribution = "On %d, %n wrote:"

   It can also be set to something more compact, e.g.
set attribution = "attribution="* %n <%a> [%(%y-%m-%d %H:%M)]:"

   The example above results in the following attribution:
* Michael Svensson <svensson@foobar.com> [05-03-06 17:02]:
> Bill, can you please send last month's progress report to Mr.
> Morgan? We also urgently need the cost estimation for the new
> production server that we want to set up before our customer's
> project will go live.

   Generally, try to keep your attribution short yet information-rich. It
   is _n_o_t the right place for witty quotes, long "attribution" novels or
   anything like that: the right place for such things is - if at all -
   the email signature at the very bottom of the message.

   When you're done with writing your message, save and quit the editor.
   As before, you will return to the compose menu, which is used in the
   same way as before.

6.2.2. Group Replies

   In the situation where a group of people uses email as a discussion,
   most of the emails will have one or more recipients, and probably
   several "Cc:" recipients. The group reply functionalityensures that
   when you press g instead of r to do a reply, each and every recipient
   that is contained in the original message will receive a copy of the
   message, either as normal recipient or as "Cc:" recipient.

6.2.3. List Replies

   When you use mailing lists, it's generally better to send your reply
   to a message only to the list instead of the list and the original
   author. To make this easy to use, mutt-ng features list replies.

   To do a list reply, simply press L. If the email contains a
   Mail-Followup-To: header, its value will be used as reply address.
   Otherwise, mutt-ng searches through all mail addresses in the original
   message and tries to match them a list of regular expressions which
   can be specified using the lists command. If any of the regular
   expression matches, a mailing list address has been found, and it will
   be used as reply address.

lists linuxevent@luga\.at vuln-dev@ mutt-ng-users@

   Nowadays, most mailing list software like GNU Mailman adds a
   Mail-Followup-To: header to their emails anyway, so setting lists is
   hardly ever necessary in practice.

6.3. Editing the message header

   When editing the header of your outgoing message, there are a couple
   of special features available.

   If you specify Fcc:_f_i_l_e_n_a_m_e Mutt-ng will pick up _f_i_l_e_n_a_m_e just as if
   you had used the _e_d_i_t_-_f_c_c function in the _c_o_m_p_o_s_e menu.

   You can also attach files to your message by specifying
Attach: filename [description]

   where _f_i_l_e_n_a_m_e is the file to attach and _d_e_s_c_r_i_p_t_i_o_n is an optional
   string to use as the description of the attached file.

   When replying to messages, if you remove the _I_n_-_R_e_p_l_y_-_T_o_: field from
   the header field, Mutt-ng will not generate a _R_e_f_e_r_e_n_c_e_s_: field, which
   allows you to create a new message thread.

   Also see the $$eeddiitt__hheeaaddeerrss and $$eeddiittoorr__hheeaaddeerrss variables

6.4. Using Mutt-ng with PGP

   If you want to use PGP, you can specify
Pgp: [E | S | S id]

   ``E'' encrypts, ``S'' signs and ``S<id>'' signs with the given key,
   setting $$ppggpp__ssiiggnn__aass permanently.

   If you have told mutt to PGP encrypt a message, it will guide you
   through a key selection process when you try to send the message.
   Mutt-ng will not ask you any questions about keys which have a
   certified user ID matching one of the message recipients' mail
   addresses. However, there may be situations in which there are several
   keys, weakly certified user ID fields, or where no matching keys can
   be found.

   In these cases, you are dropped into a menu with a list of keys from
   which you can select one. When you quit this menu, or mutt can't find
   any matching keys, you are prompted for a user ID. You can, as
   usually, abort this prompt using C-G. When you do so, mutt will return
   to the compose screen.

   Once you have successfully finished the key selection, the message
   will be encrypted using the selected public keys, and sent out.

   Most fields of the entries in the key selection menu (see also
   $$ppggpp__eennttrryy__ffoorrmmaatt) have obvious meanings. But some explanations on the
   capabilities, flags, and validity fields are in order.

   The flags sequence (%f) will expand to one of the following flags:

   _T_a_b_l_e_ _2_._1_0_._ _P_G_P_ _K_e_y_ _M_e_n_u_ _F_l_a_g_s
   Flag Description
   R    The key has been revoked and can't be used.
   X    The key is expired and can't be used.
   d    You have marked the key as disabled.
   c    There are unknown critical self-signature packets.

   The capabilities field (%c) expands to a two-character
   sequencerepresenting a key's capabilities. The first character gives
   the key's encryption capabilities: A minus sign (_- )means that the key
   cannot be used for encryption. A dot (_. )means that it's marked as a
   signature key in one of the user IDs, but may also be used for
   encryption. The letter _e indicates that this key can be used for
   encryption.

   The second character indicates the key's signing capabilities. Once
   again, a ``_-'' implies ``not for signing'', ``_.'' implies that the key
   is marked as an encryption key in one of the user-ids, and ``_s''
   denotes a key which can be used for signing.

   Finally, the validity field (%t) indicates how well-certified a
   user-id is. A question mark (_?) indicates undefined validity, a minus
   character (_-) marks an untrusted association, a space character means
   a partially trusted association, and a plus character (_+ ) indicates
   complete validity.

6.5. Sending anonymous messages via mixmaster

   You may also have configured mutt to co-operate with Mixmaster, an
   anonymous remailer. Mixmaster permits you to send your messages
   anonymously using a chain of remailers. Mixmaster support in mutt is
   for mixmaster version 2.04 (beta 45 appears to be the latest) and
   2.03. It does not support earlier versions or the later so-called
   version 3 betas, of which the latest appears to be called 2.9b23.

   To use it, you'll have to obey certain restrictions. Most important,
   you cannot use the Cc and Bcc headers. To tell Mutt-ng to use
   mixmaster, you have to select a remailer chain, using the mix function
   on the compose menu.

   The chain selection screen is divided into two parts. In the (larger)
   upper part, you get a list of remailers you may use. In the lower
   part, you see the currently selected chain of remailers.

   You can navigate in the chain using the chain-prev and chain-next
   functions, which are by default bound to the left and right arrows and
   to the h and l keys (think vi keyboard bindings). To insert a remailer
   at the current chain position, use the insert function. To append a
   remailer behind the current chain position, use select-entry or append
   . You can also delete entries from the chain, using the corresponding
   function. Finally, to abandon your changes, leave the menu, or accept
   them pressing (by default) the Return key.

   Note that different remailers do have different capabilities,
   indicated in the %c entry of the remailer menu lines (see
   $$mmiixx__eennttrryy__ffoorrmmaatt). Most important is the ``middleman'' capability,
   indicated by a capital ``M'': This means that the remailer in question
   cannot be used as the final element of a chain, but will only forward
   messages to other mixmaster remailers. For details on the other
   capabilities, please have a look at the mixmaster documentation.

7. Forwarding and Bouncing Mail

   Often, it is necessary to forward mails to other people. Therefore,
   mutt-ng supports forwarding messages in two different ways.

   The first one is regular forwarding, as you probably know it from
   other mail clients. You simply press f, enter the recipient email
   address, the subject of the forwarded email, and then you can edit the
   message to be forwarded in the editor. The forwarded message is
   separated from the rest of the message via the two following markers:

----- Forwarded message from Lucas User <luser@example.com> -----

From: Lucas User <luser@example.com>
Date: Thu, 02 Dec 2004 03:08:34 +0100
To: Michael Random <mrandom@example.com>
Subject: Re: blackmail

Pay me EUR 50,000.- cash or your favorite stuffed animal will die
a horrible death.

----- End forwarded message -----

   When you're done with editing the mail, save and quit the editor, and
   you will return to the compose menu, the same menu you also encounter
   when composing or replying to mails.

   The second mode of forwarding emails with mutt-ng is the so-called
   _b_o_u_n_c_i_n_g: when you bounce an email to another address, it will be sent
   in practically the same format you send it (except for headers that
   are created during transporting the message). To bounce a message,
   press b and enter the recipient email address. By default, you are
   then asked whether you really want to bounce the message to the
   specified recipient. If you answer with yes, the message will then be
   bounced.

   To the recipient, the bounced email will look as if he got it like a
   regular email where he was Bcc: recipient. The only possibility to
   find out whether it was a bounced email is to carefully study the
   email headers and to find out which host really sent the email.

8. Postponing Mail

   At times it is desirable to delay sending a message that you have
   already begun to compose. When the _p_o_s_t_p_o_n_e_-_m_e_s_s_a_g_e function is used
   in the _c_o_m_p_o_s_e menu, the body of your message and attachments are
   stored in the mailbox specified by the $$ppoossttppoonneedd variable. This means
   that you can recall the message even if you exit Mutt-ng and then
   restart it at a later time.

   Once a message is postponed, there are several ways to resume it. From
   the command line you can use the ``-p'' option, or if you _c_o_m_p_o_s_e a
   new message from the _i_n_d_e_x or _p_a_g_e_r you will be prompted if postponed
   messages exist. If multiple messages are currently postponed, the
   _p_o_s_t_p_o_n_e_d menu will pop up and you can select which message you would
   like to resume.

   _N_o_t_e_: If you postpone a reply to a message, the reply setting of the
   message is only updated when you actually finish the message and send
   it. Also, you must be in the same folder with the message you replied
   to for the status of the message to be updated.

   See also the $$ppoossttppoonnee quad-option.

Chapter 3. Configuration

   _T_a_b_l_e_ _o_f_ _C_o_n_t_e_n_t_s

   11..  LLooccaattiioonnss  ooff  CCoonnffiigguurraattiioonn  FFiilleess
   22..  BBaassiicc  SSyynnttaaxx  ooff  IInniittiiaalliizzaattiioonn  FFiilleess
   33..  EExxppaannssiioonn  wwiitthhiinn  vvaarriiaabblleess

        33..11..  CCoommmmaannddss''  OOuuttppuutt
        33..22..  EEnnvviirroonnmmeenntt  VVaarriiaabblleess
        33..33..  CCoonnffiigguurraattiioonn  VVaarriiaabblleess
        33..44..  SSeellff--DDeeffiinneedd  VVaarriiaabblleess
        33..55..  PPrree--DDeeffiinneedd  VVaarriiaabblleess
        33..66..  TTyyppee  CCoonnvveerrssiioonnss

   44..  DDeeffiinniinngg//UUssiinngg  aalliiaasseess
   55..  CChhaannggiinngg  tthhee  ddeeffaauulltt  kkeeyy  bbiinnddiinnggss
   66..  DDeeffiinniinngg  aalliiaasseess  ffoorr  cchhaarraacctteerr  sseettss
   77..  SSeettttiinngg  vvaarriiaabblleess  bbaasseedd  uuppoonn  mmaaiillbbooxx
   88..  KKeeyybbooaarrdd  mmaaccrrooss
   99..  UUssiinngg  ccoolloorr  aanndd  mmoonnoo  vviiddeeoo  aattttrriibbuutteess
   1100..  IIggnnoorriinngg  ((wweeeeddiinngg))  uunnwwaanntteedd  mmeessssaaggee  hheeaaddeerrss
   1111..  AAlltteerrnnaattiivvee  aaddddrreesssseess
   1122..  FFoorrmmaatt  ==  FFlloowweedd

        1122..11..  IInnttrroodduuccttiioonn
        1122..22..  RReecceeiivviinngg::  DDiissppllaayy  SSeettuupp
        1122..33..  SSeennddiinngg
        1122..44..  AAddddiittiioonnaall  NNootteess

   1133..  MMaaiilliinngg  lliissttss
   1144..  UUssiinngg  MMuullttiippllee  ssppooooll  mmaaiillbbooxxeess
   1155..  DDeeffiinniinngg  mmaaiillbbooxxeess  wwhhiicchh  rreecceeiivvee  mmaaiill
   1166..  UUsseerr  ddeeffiinneedd  hheeaaddeerrss
   1177..  DDeeffiinniinngg  tthhee  oorrddeerr  ooff  hheeaaddeerrss  wwhheenn  vviieewwiinngg  mmeessssaaggeess
   1188..  SSppeecciiffyy  ddeeffaauulltt  ssaavvee  ffiilleennaammee
   1199..  SSppeecciiffyy  ddeeffaauulltt  FFcccc::  mmaaiillbbooxx  wwhheenn  ccoommppoossiinngg
   2200..  SSppeecciiffyy  ddeeffaauulltt  ssaavvee  ffiilleennaammee  aanndd  ddeeffaauulltt  FFcccc::  mmaaiillbbooxx  aatt  oonnccee
   2211..  CChhaannggee  sseettttiinnggss  bbaasseedd  uuppoonn  mmeessssaaggee  rreecciippiieennttss
   2222..  CChhaannggee  sseettttiinnggss  bbeeffoorree  ffoorrmmaattttiinngg  aa  mmeessssaaggee
   2233..  CChhoooossiinngg  tthhee  ccrryyppttooggrraapphhiicc  kkeeyy  ooff  tthhee  rreecciippiieenntt
   2244..  AAddddiinngg  kkeeyy  sseeqquueenncceess  ttoo  tthhee  kkeeyybbooaarrdd  bbuuffffeerr
   2255..  EExxeeccuuttiinngg  ffuunnccttiioonnss
   2266..  MMeessssaaggee  SSccoorriinngg
   2277..  SSppaamm  ddeetteeccttiioonn
   2288..  SSeettttiinngg  vvaarriiaabblleess
   2299..  RReeaaddiinngg  iinniittiiaalliizzaattiioonn  ccoommmmaannddss  ffrroomm  aannootthheerr  ffiillee
   3300..  RReemmoovviinngg  hhooookkss
   3311..  SShhaarriinngg  SSeettuuppss

        3311..11..  CChhaarraacctteerr  SSeettss
        3311..22..  MMoodduullaarriizzaattiioonn
        3311..33..  CCoonnddiittiioonnaall  ppaarrttss

   3322..  OObbssoolleettee  VVaarriiaabblleess

1. Locations of Configuration Files

   While the default configuration (or ``preferences'') make Mutt-ng
   usable right out of the box, it is often desirable to tailor Mutt-ng
   to suit your own tastes. When Mutt-ng is first invoked, it will
   attempt to read the ``system'' configuration file (defaults set by
   your local system administrator), unless the ``-n'' ccoommmmaannddlliinnee option
   is specified. This file is typically /usr/local/share/muttng/Muttngrc
   or /etc/Muttngrc , Mutt-ng users will find this file in
   /usr/local/share/muttng/Muttrc or /etc/Muttngrc. Mutt will next look
   for a file named .muttrc in your home directory, Mutt-ng will look for
   .muttngrc. If this file does not exist and your home directory has a
   subdirectory named .mutt , mutt try to load a file named
   .muttng/muttngrc.

   .muttrc (or .muttngrc for Mutt-ng) is the file where you will usually
   place your ccoommmmaannddss to configure Mutt-ng.

2. Basic Syntax of Initialization Files

   An initialization file consists of a series of ccoommmmaannddss. Each line of
   the file may contain one or more commands. When multiple commands are
   used, they must be separated by a semicolon (;).
set realname='Mutt-ng user' ; ignore x-

   The hash mark, or pound sign (``#''), is used as a ``comment''
   character. You can use it to annotate your initialization file. All
   text after the comment character to the end of the line is ignored.
   For example,

my_hdr X-Disclaimer: Why are you listening to me? # This is a comment

   Single quotes (') and double quotes (") can be used to quote strings
   which contain spaces or other special characters. The difference
   between the two types of quotes is similar to that of many popular
   shell programs, namely that a single quote is used to specify a
   literal string (one that is not interpreted for shell variables or
   quoting with a backslash (see next paragraph), while double quotes
   indicate a string for which should be evaluated. For example, backtics
   are evaluated inside of double quotes, but _n_o_t for single quotes.

   \ quotes the next character, just as in shells such as bash and zsh.
   For example, if want to put quotes ``"'' inside of a string, you can
   use ``\'' to force the next character to be a literal instead of
   interpreted character.
set realname="Michael \"MuttDude\" Elkins"

   ``\\'' means to insert a literal ``\'' into the line. ``\n'' and
   ``\r'' have their usual C meanings of linefeed and carriage-return,
   respectively.

   A \ at the end of a line can be used to split commands over multiple
   lines, provided that the split points don't appear in the middle of
   command names.

   Please note that, unlike the various shells, mutt-ng interprets a
   ``\'' at the end of a line also in comments. This allows you to
   disable a command split over multiple lines with only one ``#''.

# folder-hook . \
set realname="Michael \"MuttDude\" Elkins"

   When testing your config files, beware the following caveat. The
   backslash at the end of the commented line extends the current line
   with the next line - then referred to as a ``continuation line''. As
   the first line is commented with a hash (#) all following continuation
   lines are also part of a comment and therefore are ignored, too. So
   take care of comments when continuation lines are involved within your
   setup files!

   Abstract example:

line1\
line2a # line2b\
line3\
line4
line5

   line1 ``continues'' until line4. however, the part after the # is a
   comment which includes line3 and line4. line5 is a new line of its own
   and thus is interpreted again.

   The commands understood by mutt are explained in the next paragraphs.
   For a complete list, see the ccoommmmaannddss.

3. Expansion within variables

   Besides just assign static content to variables, there's plenty of
   ways of adding external and more or less dynamic content.

3.1. Commands' Output

   It is possible to substitute the output of a Unix command in an
   initialization file. This is accomplished by enclosing the command in
   backquotes (``) as in, for example:

my_hdr X-Operating-System: `uname -a`

   The output of the Unix command ``uname -a'' will be substituted before
   the line is parsed. Note that since initialization files are line
   oriented, only the first line of output from the Unix command will be
   substituted.

3.2. Environment Variables

   UNIX environments can be accessed like the way it is done in shells
   like sh and bash: Prepend the name of the environment by a ``$'' sign.
   For example,

set record=+sent_on_$HOSTNAME

   sets the $$rreeccoorrdd variable to the string _+_s_e_n_t___o_n__ and appends the
   value of the evironment variable $HOSTNAME.

   _N_o_t_e_: There will be no warning if an environment variable is not
   defined. The result will of the expansion will then be empty.

3.3. Configuration Variables

   As for environment variables, the values of all configuration
   variables as string can be used in the same way, too. For example,

set imap_home_namespace = $folder

   would set the value of $$iimmaapp__hhoommee__nnaammeessppaaccee to the value to which
   $$ffoollddeerr is _c_u_r_r_e_n_t_l_y set to.

   _N_o_t_e_: There're no logical links established in such cases so that the
   the value for $$iimmaapp__hhoommee__nnaammeessppaaccee won't change even if $$ffoollddeerr gets
   changed.

   _N_o_t_e_: There will be no warning if a configuration variable is not
   defined or is empty. The result will of the expansion will then be
   empty.

3.4. Self-Defined Variables

   Mutt-ng flexibly allows users to define their own variables. To avoid
   conflicts with the standard set and to prevent misleading error
   messages, there's a reserved namespace for them: all user-defined
   variables must be prefixed with user_ and can be used just like any
   ordinary configuration or environment variable.

   For example, to view the manual, users can either define two macros
   like the following

macro generic <F1> "!less -r /path/to/manual" "Show manual"
macro pager <F1> "!less -r /path/to/manual" "Show manual"

   for generic, pager and index .The alternative is to define a custom
   variable like so:

set user_manualcmd = "!less -r /path/to_manual"
macro generic <F1> "$user_manualcmd<enter>" "Show manual"
macro pager <F1> "$user_manualcmd<enter>" "Show manual"
macro index <F1> "$user_manualcmd<enter>" "Show manual"

   to re-use the command sequence as in:

macro index <F2> "$user_manualcmd | grep '\^[ ]\\+~. '" "Show Patterns"

   Using this feature, arbitrary sequences can be defined once and
   recalled and reused where necessary. More advanced scenarios could
   include to save a variable's value at the beginning of macro sequence
   and restore it at end.

   When the variable is first defined, the first value it gets assigned
   is also the initial value to which it can be reset using the reset
   command.

   The complete removal is done via the unset keyword.

   After the following sequence:

set user_foo = 42
set user_foo = 666

   the variable $user_foo has a current value of 666 and an initial of
   42. The query

set ?user_foo

   will show 666. After doing the reset via

reset user_foo

   a following query will give 42 as the result. After unsetting it via

unset user_foo

   any query or operation (except the noted expansion within other
   statements) will lead to an error message.

3.5. Pre-Defined Variables

   In order to allow users to share one setup over a number of different
   machines without having to change its contents, there's a number of
   pre-defined variables. These are prefixed with muttng_ and are
   read-only, i.e. they cannot be set, unset or reset. The reference
   chapter lists all available variables.

   _P_l_e_a_s_e_ _c_o_n_s_u_l_t_ _t_h_e_ _l_o_c_a_l_ _c_o_p_y_ _o_f_ _y_o_u_r_ _m_a_n_u_a_l_ _f_o_r_ _t_h_e_i_r_ _v_a_l_u_e_s_ _a_s_ _t_h_e_y
   _m_a_y_ _d_i_f_f_e_r_ _f_r_o_m_ _d_i_f_f_e_r_e_n_t_ _m_a_n_u_a_l_ _s_o_u_r_c_e_s_. Where the manual is
   installed in can be queried (already using such a variable) by
   running:

$ muttng -Q muttng_docdir

   To extend the example for viewing the manual via self-defined
   variables, it can be made more readable and more portable by changing
   the real path in:

set user_manualcmd = '!less -r /path/to_manual'

   to:

set user_manualcmd = "!less -r $muttng_docdir/manual.txt"

   which works everywhere if a manual is installed.

   Please note that by the type of quoting, muttng determines when to
   expand these values: when it finds double quotes, the value will be
   expanded during reading the setup files but when it finds single
   quotes, it'll expand it at runtime as needed.

   For example, the statement

folder-hook . "set user_current_folder = $muttng_folder_name"

   will be already be translated to the following when reading the
   startup files:

folder-hook . "set user_current_folder = some_folder"

   with some_folder being the name of the first folder muttng opens. On
   the contrary,

folder-hook . 'set user_current_folder = $muttng_folder_name'

   will be executed at runtime because of the single quotes so that
   user_current_folder will always have the value of the currently opened
   folder.

   A more practical example is:

folder-hook . 'source ~/.mutt/score-$muttng_folder_name'

   which can be used to source files containing score commands depending
   on the folder the user enters.

3.6. Type Conversions

   A note about variable's types during conversion: internally values are
   stored in internal types but for any dump/query or set operation
   they're converted to and from string. That means that there's no need
   to worry about types when referencing any variable. As an example, the
   following can be used without harm (besides makeing muttng very likely
   behave strange):

set read_inc = 100
set folder = $read_inc
set read_inc = $folder
set user_magic_number = 42
set folder = $user_magic_number

4. Defining/Using aliases

   Usage: alias_k_e_y_ _a_d_d_r_e_s_s_ _[_,_ _a_d_d_r_e_s_s_,_._._._]

   It's usually very cumbersome to remember or type out the address of
   someone you are communicating with. Mutt-ng allows you to create
   ``aliases'' which map a short string to a full address.

   _N_o_t_e_: if you want to create an alias for a group (by specifying more
   than one address), you _m_u_s_t separate the addresses with a comma
   (``,'').

   To remove an alias or aliases (``*'' means all aliases):

   Usage: unalias_[_*_ _|_ _k_e_y_ _._._._ _]

alias muttdude me@cs.hmc.edu (Michael Elkins)
alias theguys manny, moe, jack

   Unlike other mailers, Mutt-ng doesn't require aliases to be defined in
   a special file. The alias command can appear anywhere in a
   configuration file, as long as this file is ssoouurrccee. Consequently, you
   can have multiple alias files, or you can have all aliases defined in
   your muttrc.

   On the other hand, the <create-alias> function can use only one file,
   the one pointed to by the $$aalliiaass__ffiillee variable (which is ~/.muttrc by
   default). This file is not special either, in the sense that Mutt-ng
   will happily append aliases to any file, but in order for the new
   aliases to take effect you need to explicitly ssoouurrccee this file too.

   For example:

source /usr/local/share/Mutt-ng.aliases
source ~/.mail_aliases
set alias_file=~/.mail_aliases

   To use aliases, you merely use the alias at any place in mutt where
   muttprompts for addresses, such as the _T_o_: or _C_c_: prompt. You can also
   enter aliases in your editor at the appropriate headers if you have
   the $$eeddiittoorr__hheeaaddeerrss variable set.

   In addition, at the various address prompts, you can use the tab
   character to expand a partial alias to the full alias. If there are
   multiple matches, mutt will bring up a menu with the matching aliases.
   In order to be presented with the full list of aliases, you must hit
   tab with out a partial alias, such as at the beginning of the prompt
   or after a comma denoting multiple addresses.

   In the alias menu, you can select as many aliases as you want with the
   _s_e_l_e_c_t_-_e_n_t_r_y key (default: RET), and use the _e_x_i_t key (default: q) to
   return to the address prompt.

5. Changing the default key bindings

   Usage: bind_m_a_p_ _k_e_y_ _f_u_n_c_t_i_o_n

   This command allows you to change the default key bindings (operation
   invoked when pressing a key).

   _m_a_p specifies in which menu the binding belongs. Multiple maps may be
   specified by separating them with commas (no additional whitespace
   isallowed). The currently defined maps are:

   generic
          This is not a real menu, but is used as a fallback for all of
          the other menus except for the pager and editor modes. If a key
          is not defined in another menu, Mutt-ng will look for a binding
          to use in this menu. This allows you to bind a key to a certain
          function in multiple menus instead of having multiple bind
          statements to accomplish the same task.

   alias
          The alias menu is the list of your personal aliases as defined
          in your muttrc. It is the mapping from a short alias name to
          the full email address(es) of the recipient(s).

   attach
          The attachment menu is used to access the attachments on
          received messages.

   browser
          The browser is used for both browsing the local directory
          structure, and for listing all of your incoming mailboxes.

   editor
          The editor is the line-based editor the user enters text data.

   index
          The index is the list of messages contained in a mailbox.

   compose
          The compose menu is the screen used when sending a new message.

   pager
          The pager is the mode used to display message/attachment data,
          and help listings.

   pgp
          The pgp menu is used to select the OpenPGP keys used for
          encrypting outgoing messages.

   postpone
          The postpone menu is similar to the index menu, except is used
          when recalling a message the user was composing, but saved
          until later.

   _k_e_y is the key (or key sequence) you wish to bind. To specify a
   control character, use the sequence _\_C_x, where _x is the letter of the
   control character (for example, to specify control-A use ``\Ca'').
   Note that the case of _x as well as _\_C is ignored, so that _\_C_A, _\_C_a,
   _\_c_A and _\_c_a are all equivalent. An alternative form is to specify the
   key as a three digit octal number prefixed with a ``\'' (for example
   _\_1_7_7 is equivalent to _\_c_?).

   In addition, _k_e_y may consist of:

   _T_a_b_l_e_ _3_._1_._ _A_l_t_e_r_n_a_t_i_v_e_ _K_e_y_ _N_a_m_e_s
   Sequence    Description
   \t          tab
   <tab>       tab
   <backtab>   backtab / shift-tab
   \r          carriage return
   \n          newline
   \e          escape
   <esc>       escape
   <up>        up arrow
   <down>      down arrow
   <left>      left arrow
   <right>     right arrow
   <pageup>    Page Up
   <pagedown>  Page Down
   <backspace> Backspace
   <delete>    Delete
   <insert>    Insert
   <enter>     Enter
   <return>    Return
   <home>      Home
   <end>       End
   <space>     Space bar
   <f1>        function key 1
   <f10>       function key 10

   _k_e_y does not need to be enclosed in quotes unless it contains a space
   (`` '').

   _f_u_n_c_t_i_o_n specifies which action to take when _k_e_y is pressed. For a
   complete list of functions, see the ffuunnccttiioonnss. The special function
   noop unbinds the specified key sequence.

6. Defining aliases for character sets

   Usage: cchhaarrsseett--hhooookk_a_l_i_a_s_c_h_a_r_s_e_t

   Usage: iiccoonnvv--hhooookk_c_h_a_r_s_e_t_l_o_c_a_l_-_c_h_a_r_s_e_t

   The cchhaarrsseett--hhooookk command defines an alias for a character set. This is
   useful to properly display messages which are tagged with a character
   set name not known to mutt.

   The iiccoonnvv--hhooookk command defines a system-specific name for a character
   set. This is helpful when your systems character conversion library
   insists on using strange, system-specific names for character sets.

7. Setting variables based upon mailbox

   Usage: ffoollddeerr--hhooookk [!]_r_e_g_e_x_p_c_o_m_m_a_n_d

   It is often desirable to change settings based on which mailbox you
   are reading. The ffoollddeerr--hhooookk command provides a method by which you
   can execute any configuration command. _r_e_g_e_x_p is a regular expression
   specifying in which mailboxes to execute _c_o_m_m_a_n_d before loading. If a
   mailbox matches multiple ffoollddeerr--hhooookk's, they are executed in the order
   given in the muttrc.

   _N_o_t_e_: if you use the ``!'' shortcut for $$ssppoooollffiillee at the beginning of
   the pattern, you must place it inside of double or single quotes in
   order to distinguish it from the logical _n_o_t operator for the
   expression.

   Note that the settings are _n_o_t restored when you leave the mailbox.
   For example, a command action to perform is to change the sorting
   methodbased upon the mailbox being read:

folder-hook mutt set sort=threads

   However, the sorting method is not restored to its previous value when
   reading a different mailbox. To specify a _d_e_f_a_u_l_t command, use the
   pattern ``.'':

folder-hook . set sort=date-sent

8. Keyboard macros

   Usage: macro_m_e_n_u_ _k_e_y_ _s_e_q_u_e_n_c_e_ _[_d_e_s_c_r_i_p_t_i_o_n_]

   Macros are useful when you would like a single key to perform a series
   of actions. When you press _k_e_y in menu _m_e_n_u ,Mutt-ng will behave as if
   you had typed _s_e_q_u_e_n_c_e. So if you have a common sequence of commands
   you type, you can create a macro to execute those commands with a
   singlekey.

   _m_e_n_u is the mmaappss which the macro will be bound. Multiple maps may be
   specified by separating multiple menu arguments by commas. Whitespace
   may not be used in between the menu arguments and thecommas separating
   them.

   _k_e_y and _s_e_q_u_e_n_c_e are expanded by the same rules as the bbiinndd. There are
   some additions however. The first is that control characters in
   _s_e_q_u_e_n_c_e can also be specified as ^x. In order to get a caret (`^'')
   you need to specify it twice. Secondly, to specify a certain key such
   as _u_p or to invoke a function directly, you can use the format _<_k_e_y
   _n_a_m_e_> and _<_f_u_n_c_t_i_o_n_ _n_a_m_e_> .For a listing of key names see the section
   on bbiinndd. Functions are listed in the ffuunnccttiioonnss.

   The advantage with using function names directly is that the macros
   willwork regardless of the current key bindings, so they are not
   dependent on the user having particular key definitions. This makes
   them more robustand portable, and also facilitates defining of macros
   in files used by more than one user (eg. the system Muttngrc).

   Optionally you can specify a descriptive text after _s_e_q_u_e_n_c_e, which is
   shown in the help screens.

   _N_o_t_e_: Macro definitions (if any) listed in the help screen(s), are
   silently truncated at the screen width, and are not wrapped.

9. Using color and mono video attributes

   Usage: color_o_b_j_e_c_t_ _f_o_r_e_g_r_o_u_n_d_ _b_a_c_k_g_r_o_u_n_d_ _[_r_e_g_e_x_p_]

   Usage: color_i_n_d_e_x_ _f_o_r_e_g_r_o_u_n_d_ _p_a_t_t_e_r_n

   Usage: uncolor_i_n_d_e_x_ _p_a_t_t_e_r_n_ _[_p_a_t_t_e_r_n_ _._._._]

   If your terminal supports color, you can spice up Mutt-ng by creating
   your own color scheme. To define the color of an object (type of
   information), you must specify both a foreground color _a_n_d a
   background color (it is not possible to only specify one or the
   other).

   _o_b_j_e_c_t can be one of:

     * attachment
     * body (match _r_e_g_e_x_p in the body of messages)
     * bold (highlighting bold patterns in the body of messages)
     * error (error messages printed by Mutt-ng)
     * header (match _r_e_g_e_x_p in the message header)
     * hdrdefault (default color of the message header in the pager)
     * index (match _p_a_t_t_e_r_n in the message index)
     * indicator (arrow or bar used to indicate the current item in a
       menu)
     * markers (the ``+'' markers at the beginning of wrapped lines in
       the pager)
     * message (informational messages)
     * normal
     * quoted (text matching $$qquuoottee__rreeggeexxpp in the body of a message)
     * quoted1, quoted2, ..., quoted_N (higher levels of quoting)
     * search (highlighting of words in the pager)
     * signature
     * status (mode lines used to display info about the mailbox or
       message)
     * tilde (the ``~'' used to pad blank lines in the pager)
     * tree (thread tree drawn in the message index and attachment menu)
     * underline (highlighting underlined patterns in the body of
       messages)

   _f_o_r_e_g_r_o_u_n_d and _b_a_c_k_g_r_o_u_n_d can be one of the following:

     * white
     * black
     * green
     * magenta
     * blue
     * cyan
     * yellow
     * red
     * default
     * color_x

   _f_o_r_e_g_r_o_u_n_d can optionally be prefixed with the keyword bright to make
   the foreground color boldfaced (e.g., brightred).

   If your terminal supports it, the special keyword _d_e_f_a_u_l_t can be used
   as a transparent color. The value _b_r_i_g_h_t_d_e_f_a_u_l_t is also valid. If
   Mutt-ng is linked against the _S_-_L_a_n_g library, you also need to set the
   $COLORFGBG environment variable to the default colors of your terminal
   for this to work; for example (for Bourne-like shells):

set COLORFGBG="green;black"
export COLORFGBG

   _N_o_t_e_: The _S_-_L_a_n_g library requires you to use the _l_i_g_h_t_g_r_a_y and _b_r_o_w_n
   keywords instead of _w_h_i_t_e and _y_e_l_l_o_w when setting this variable.

   _N_o_t_e_: The uncolor command can be applied to the index object only. It
   removes entries from the list. You _m_u_s_t specify the same pattern
   specified in the color command for it to be removed. The pattern ``*''
   is a special token which means to clear the color index list of all
   entries.

   Mutt-ng also recognizes the keywords _c_o_l_o_r_0, _c_o_l_o_r_1 ,..., _c_o_l_o_r_N_-_1 (_N
   being the number of colors supported by your terminal). This is useful
   when you remap the colors for your display (for example by changing
   the color associated with _c_o_l_o_r_2 for your xterm), since color names
   may then lose their normal meaning.

   If your terminal does not support color, it is still possible change
   the video attributes through the use of the ``mono'' command:

   Usage: mono_o_b_j_e_c_t_ _a_t_t_r_i_b_u_t_e_ _[_r_e_g_e_x_p_]

   Usage: mono_i_n_d_e_x_ _a_t_t_r_i_b_u_t_e_ _p_a_t_t_e_r_n

   Usage: unmono_i_n_d_e_x_ _p_a_t_t_e_r_n_ _[_p_a_t_t_e_r_n_ _._._._]

   where _a_t_t_r_i_b_u_t_e is one of the following:

     * none
     * bold
     * underline
     * reverse
     * standout

10. Ignoring (weeding) unwanted message headers

   Usage: ignore_p_a_t_t_e_r_n_ _[_p_a_t_t_e_r_n_ _._._._]

   Usage: unignore_p_a_t_t_e_r_n_ _[_p_a_t_t_e_r_n_ _._._._]

   Messages often have many header fields added by automatic processing
   systems, or which may not seem useful to display on the screen. This
   command allows you to specify header fields which you don't normally
   want to see.

   You do not need to specify the full header field name. For example,
   ``ignore content-'' will ignore all header fields that begin with the
   pattern ``content-''. ``ignore *'' will ignore all headers.

   To remove a previously added token from the list, use the ``unignore''
   command. The ``unignore'' command will make Mutt-ng display headers
   with the given pattern. For example, if you do ``ignore x-'' it is
   possible to ``unignore x-mailer''.

   ``unignore *'' will remove all tokens from the ignore list.

   For example:
# Sven's draconian header weeding
ignore *
unignore from date subject to cc
unignore organization organisation x-mailer: x-newsreader: x-mailing-list:
unignore posted-to:

11. Alternative addresses

   Usage: alternates_r_e_g_e_x_p_ _[_r_e_g_e_x_p_ _._._._]

   Usage: unalternates_r_e_g_e_x_p_ _[_r_e_g_e_x_p_ _._._._]

   With various functions, mutt will treat messages differently,
   depending on whether you sent them or whether you received them from
   someone else. For instance, when replying to a message that you sent
   to a different party, mutt will automatically suggest to send the
   response to the original message's recipients--responding to yourself
   won't make much sense in many cases. (See $$rreeppllyy__ttoo.)

   Many users receive e-mail under a number of different addresses. To
   fully use mutt's features here, the program must be able to recognize
   what e-mail addresses you receive mail under. That's the purpose of
   the alternates command: It takes a list of regular expressions, each
   of which can identify an address under which you receive e-mail.

   The unalternates command can be used to write exceptions to alternates
   patterns. If an address matches something in an alternates command,
   but you nonetheless do not think it is from you, you can list a more
   precise pattern under an unalternates command.

   To remove a regular expression from the alternates list, use the
   unalternates command with exactly the same _r_e_g_e_x_p . Likewise, if the
   _r_e_g_e_x_p for a alternates command matches an entry on the unalternates
   list, that unalternates entry will be removed. If the _r_e_g_e_x_p for
   unalternates is ``*'', _a_l_l_ _e_n_t_r_i_e_s on alternates will be removed.

12. Format = Flowed

12.1. Introduction

   Mutt-ng contains support for so-called format=flowed messages. In the
   beginning of email, each message had a fixed line width, and it was
   enough for displaying them on fixed-size terminals. But times changed,
   and nowadays hardly anybody still uses fixed-size terminals: more
   people nowaydays use graphical user interfaces, with dynamically
   resizable windows. This led to the demand of a new email format that
   makes it possible for the email client to make the email look nice in
   a resizable window without breaking quoting levels and creating an
   incompatible email format that can also be displayed nicely on old
   fixed-size terminals.

   For introductory information on format=flowed messages, see
   <<hhttttpp::////wwwwww..jjooeeccllaarrkk..oorrgg//ffffaaqq..hhttmmll>>.

12.2. Receiving: Display Setup

   When you receive emails that are marked as format=flowed messages, and
   is formatted correctly, mutt-ng will try to reformat the message to
   optimally fit on your terminal. If you want a fixed margin on the
   right side of your terminal, you can set the following:

set wrapmargin = 10

   The code above makes the line break 10 columns before the right side
   of the terminal.

   If your terminal is so wide that the lines are embarrassingly long,
   you can also set a maximum line length:

set max_line_length = 120

   The example above will give you lines not longer than 120 characters.

   When you view at format=flowed messages, you will often see the
   quoting hierarchy like in the following example:

>Bill, can you please send last month's progress report to Mr.
>Morgan? We also urgently need the cost estimation for the new
>production server that we want to set up before our customer's
>project will go live.

   This obviously doesn't look very nice, and it makes it very hard to
   differentiate between text and quoting character. The solution is to
   configure mutt-ng to "stuff" the quoting:

set stuff_quoted

   This will lead to a nicer result that is easier to read:

> Bill, can you please send last month's progress report to Mr.
> Morgan? We also urgently need the cost estimation for the new
> production server that we want to set up before our customer's
> project will go live.

12.3. Sending

   If you want mutt-ng to send emails with format=flowed set, you need to
   explicitly set it:

set text_flowed

   Additionally, you have to use an editor which supports writing
   format=flowed-conforming emails. For vim(1), this is done by adding w
   to the formatoptions (see :h formatoptions and :h fo-table) when
   writing emails.

   Also note that _f_o_r_m_a_t_=_f_l_o_w_e_d knows about ``space-stuffing'', that is,
   when sending messages, some kinds of lines have to be indented with a
   single space on the sending side. On the receiving side, the first
   space (if any) is removed. As a consequence and in addition to the
   above simple setting, please keep this in mind when making manual
   formattings within the editor. Also note that mutt-ng currently
   violates the standard (RRffCC  33667766) as it does not space-stuff lines
   starting with:

     * > This is _n_o_t the quote character but a right angle used for other
       reasons

   Please make sure that you manually prepend a space to each of them.

12.4. Additional Notes

   For completeness, the $$ddeelleettee__ssppaaccee variable provides the mechanism to
   generate a DelSp=yes parameter on _o_u_t_g_o_i_n_g messages. According to the
   standard, clients receiving a format=flowed messages should delete the
   last space of a flowed line but still interpret the line as flowed.
   Because flowed lines usually contain only one space at the end, this
   parameter would make the receiving client concatenate the last word of
   the previous with the first of the current line _w_i_t_h_o_u_t a space. This
   makes ordinary text unreadable and is intended for languages rarely
   using spaces. So please use this setting only if you're sure what
   you're doing.

13. Mailing lists

   Usage: lists_r_e_g_e_x_p_ _[_r_e_g_e_x_p_ _._._._]

   Usage: unlists_r_e_g_e_x_p_ _[_r_e_g_e_x_p_ _._._._]

   Usage: subscribe_r_e_g_e_x_p_ _[_r_e_g_e_x_p_ _._._._]

   Usage: unsubscribe_r_e_g_e_x_p_ _[_r_e_g_e_x_p_ _._._._]

   Mutt-ng has a few nice features for uussiinngg--lliissttss. In order to take
   advantage of them, you must specify which addresses belong to mailing
   lists, and which mailing lists you are subscribed to. Once you have
   done this, the lliisstt--rreeppllyy function will work for all known lists.
   Additionally, when you send a message to a subscribed list, mutt will
   add a Mail-Followup-To header to tell other users' mail user agents
   not to send copies of replies to your personal address. Note that the
   Mail-Followup-To header is a non-standard extension which is not
   supported by all mail user agents. Adding it is not bullet-proof
   against receiving personal CCs of list messages. Also note that the
   generation of the Mail-Followup-To header is controlled by the
   $$ffoolllloowwuupp__ttoo configuration variable.

   More precisely, Mutt-ng maintains lists of patterns for the addresses
   of known and subscribed mailing lists. Every subscribed mailing list
   is known. To mark a mailing list as known, use the ``lists'' command.
   To mark it as subscribed, use ``subscribe''.

   You can use regular expressions with both commands. To mark all
   messages sent to a specific bug report's address on mutt's bug
   tracking system as list mail, for instance, you could say ``subscribe
   [0-9]*@bugs.guug.de''. Often, it's sufficient to just give a portion
   of the list's e-mail address.

   Specify as much of the address as you need to to remove ambiguity. For
   example, if you've subscribed to the Mutt-ng mailing list, you will
   receive mail addressed to _m_u_t_t_-_u_s_e_r_s_@_m_u_t_t_._o_r_g. So, to tell Mutt-ng
   that this is a mailing list, you could add ``lists mutt-users'' to
   your initialization file. To tell mutt that you are subscribed to it,
   add ``subscribe mutt-users'' to your initialization file instead. If
   you also happen to get mail from someone whose address is
   _m_u_t_t_-_u_s_e_r_s_@_e_x_a_m_p_l_e_._c_o_m, you could use ``lists mutt-users@mutt\\.org''
   or ``subscribe mutt-users@mutt\\.org'' to match only mail from the
   actual list.

   The ``unlists'' command is used to remove a token from the list of
   known and subscribed mailing-lists. Use ``unlists *'' to remove all
   tokens.

   To remove a mailing list from the list of subscribed mailing lists,
   but keep it on the list of known mailing lists, use ``unsubscribe''.

14. Using Multiple spool mailboxes

   Usage: mmbbooxx--hhooookk [!]_p_a_t_t_e_r_n_m_a_i_l_b_o_x

   This command is used to move read messages from a specified mailbox to
   adifferent mailbox automatically when you quit or change folders.
   _p_a_t_t_e_r_n is a regular expression specifying the mailbox to treat as a
   ``spool'' mailbox and _m_a_i_l_b_o_x specifies where mail should be saved
   when read.

   Unlike some of the other _h_o_o_k commands, only the _f_i_r_s_t matching
   pattern is used (it is not possible to save read mail in more than a
   single mailbox).

15. Defining mailboxes which receive mail

   Usage: mailboxes_[_!_]_f_i_l_e_n_a_m_e_ _[_f_i_l_e_n_a_m_e_ _._._._ _]

   Usage: unmailboxes_[_!_]_f_i_l_e_n_a_m_e_ _[_f_i_l_e_n_a_m_e_ _._._._ _]

   This command specifies folders which can receive mail and which will
   be checked for new messages. By default, the main menu status bar
   displays how many of these folders have new messages.

   When changing folders, pressing _s_p_a_c_e will cycle through folders with
   new mail.

   Pressing TAB in the directory browser will bring up a menu showing the
   files specified by the mailboxes command, and indicate which contain
   new messages. Mutt-ng will automatically enter this mode when invoked
   from the command line with the -y option.

   The ``unmailboxes'' command is used to remove a token from the list of
   folders which receive mail. Use ``unmailboxes *'' to remove all
   tokens.

   _N_o_t_e_: new mail is detected by comparing the last modification time to
   the last access time. Utilities like biff or frm or any other program
   which accesses the mailbox might cause Mutt-ng to never detect new
   mail for that mailbox if they do not properly reset the access time.
   Backup tools are another common reason for updated access times.

   _N_o_t_e_: the filenames in the mailboxes command are resolved when the
   command is executed, so if these names contain sshhoorrttccuuttss (such as
   ``='' and ``!''), any variable definition that affect these characters
   (like $$ffoollddeerr and $$ssppoooollffiillee) should be executed before the mailboxes
   command.

16. User defined headers

   Usage: my_hdr_s_t_r_i_n_g

   Usage: unmy_hdr_f_i_e_l_d_ _[_f_i_e_l_d_ _._._._]

   The ``my_hdr'' command allows you to create your own header fields
   which will be added to every message you send.

   For example, if you would like to add an ``Organization:'' header
   field to all of your outgoing messages, you can put the command

my_hdr Organization: A Really Big Company, Anytown, USA

   in your .muttrc.

   _N_o_t_e_: space characters are _n_o_t allowed between the keyword and the
   colon (``:''). The standard for electronic mail (RRffCC  882222) says that
   space is illegal there, so Mutt-ng enforces the rule.

   If you would like to add a header field to a single message, you
   should either set the $$eeddiitt__hheeaaddeerrss variable, or use the _e_d_i_t_-_h_e_a_d_e_r_s
   function (default: ``E'') in the send-menu so that you can edit the
   header of your message along with the body.

   To remove user defined header fields, use the ``unmy_hdr'' command.
   You may specify an asterisk (``*'') to remove all header fields, or
   the fields to remove. For example, to remove all ``To'' and ``Cc''
   header fields, you could use:

unmy_hdr to cc

17. Defining the order of headers when viewing messages

   Usage: hdr_order_h_e_a_d_e_r_ _h_e_a_d_e_r_ _[_h_e_a_d_e_r_ _._._._]

   Usage: unhdr_order_[_ _*_ _|_ _h_e_a_d_e_r_ _h_e_a_d_e_r_ _._._._]

   With this command, you can specify an order in which mutt will attempt
   to present headers to you when viewing messages.

   ``unhdr_order *'' will clear all previous headers from the order list,
   thus removing the header order effects set by the system-wide startup
   file.

hdr_order From Date: From: To: Cc: Subject:

18. Specify default save filename

   Usage: ssaavvee--hhooookk [!]_p_a_t_t_e_r_n_f_i_l_e_n_a_m_e

   This command is used to override the default filename used when saving
   messages. _f_i_l_e_n_a_m_e will be used as the default filename if the message
   is _F_r_o_m_: an address matching _r_e_g_e_x_p or if you are the author and the
   message is addressed _t_o_: something matching _r_e_g_e_x_p .

   See ppaatttteerrnn--hhooookk for information on the exact format of _p_a_t_t_e_r_n.

   Examples:

save-hook me@(turing\\.)?cs\\.hmc\\.edu$ +elkins
save-hook aol\\.com$ +spam

   Also see the ffcccc--ssaavvee--hhooookk command.

19. Specify default Fcc: mailbox when composing

   Usage: ffcccc--hhooookk [!]_p_a_t_t_e_r_n_m_a_i_l_b_o_x

   This command is used to save outgoing mail in a mailbox other than
   $$rreeccoorrdd. Mutt-ng searches the initial list of message recipients for
   the first matching _r_e_g_e_x_p and uses _m_a_i_l_b_o_x as the default Fcc:
   mailbox. If no match is found the message will be saved to $$rreeccoorrdd
   mailbox.

   See ppaatttteerrnn--hhooookk for information on the exact format of _p_a_t_t_e_r_n.

   Example:

fcc-hook [@.]aol\\.com$ +spammers

   The above will save a copy of all messages going to the aol.com domain
   to the `+spammers' mailbox by default. Also see the ffcccc--ssaavvee--hhooookk
   command.

20. Specify default save filename and default Fcc: mailbox at once

   Usage: ffcccc--ssaavvee--hhooookk [!]_p_a_t_t_e_r_n_m_a_i_l_b_o_x

   This command is a shortcut, equivalent to doing both a ffcccc--hhooookk and a
   ssaavvee--hhooookk with its arguments.

21. Change settings based upon message recipients

   Usage: rreeppllyy--hhooookk [!]_p_a_t_t_e_r_n_c_o_m_m_a_n_d

   Usage: sseenndd--hhooookk [!]_p_a_t_t_e_r_n_c_o_m_m_a_n_d

   Usage: sseenndd22--hhooookk [!]_p_a_t_t_e_r_n_c_o_m_m_a_n_d

   These commands can be used to execute arbitrary configuration commands
   based upon recipients of the message. _p_a_t_t_e_r_n is a regular expression
   matching the desired address. _c_o_m_m_a_n_d is executed when _r_e_g_e_x_p matches
   recipients of the message.

   rreeppllyy--hhooookk is matched against the message you are _r_e_p_l_y_i_n_g _t_o, instead
   of the message you are _s_e_n_d_i_n_g .  sseenndd--hhooookk is matched against all
   messages, both _n_e_w and _r_e_p_l_i_e_s ._N_o_t_e_:rreeppllyy--hhooookks are matched _b_e_f_o_r_e
   the sseenndd--hhooookk, _r_e_g_a_r_d_l_e_s_s of the order specified in the users's
   configuration file.

   sseenndd22--hhooookk is matched every time a message is changed, either by
   editing it, or by using the compose menu to change its recipients or
   subject. sseenndd22--hhooookk is executed after sseenndd--hhooookk ,and can, e.g., be
   used to set parameters such as the $$sseennddmmaaiill variable depending on the
   message's sender address.

   For each type of sseenndd--hhooookk or rreeppllyy--hhooookk, when multiple matches occur,
   commands are executed in the order they are specified in the muttrc
   (for that type of hook).

   See ppaatttteerrnn--hhooookk for information on the exact format of _p_a_t_t_e_r_n.

   Example: send-hook mutt "set mime_forward signature=''"

   Another typical use for this command is to change the values of the
   $$aattttrriibbuuttiioonn, $$ssiiggnnaattuurree and $$llooccaallee variables in order to change the
   language of the attributions and signatures based upon the recipients.

   _N_o_t_e_: the sseenndd--hhooookk's are only executed ONCE after getting the initial
   list of recipients. Adding a recipient after replying or editing the
   message will NOT cause any sseenndd--hhooookk to be executed. Also note that
   my_hdr commands which modify recipient headers, or the message's
   subject, don't have any effect on the current message when executed
   from a sseenndd--hhooookk.

22. Change settings before formatting a message

   Usage: mmeessssaaggee--hhooookk [!]_p_a_t_t_e_r_n_c_o_m_m_a_n_d

   This command can be used to execute arbitrary configuration commands
   before viewing or formatting a message based upon information about
   the message. _c_o_m_m_a_n_d is executed if the _p_a_t_t_e_r_n matches the message to
   be displayed. When multiple matches occur, commands are executed in
   the order they are specified in the muttrc.

   See ppaatttteerrnn--hhooookk for information on the exact format of _p_a_t_t_e_r_n.

   Example:
message-hook ~A 'set pager=builtin'
message-hook '~f freshmeat-news' 'set pager="less \"+/^  subject:.*\""'

23. Choosing the cryptographic key of the recipient

   Usage: ccrryypptt--hhooookk_p_a_t_t_e_r_n_k_e_y_i_d

   When encrypting messages with PGP or OpenSSL, you may want to
   associate a certain key with a given e-mail address automatically,
   either because the recipient's public key can't be deduced from the
   destination address, or because, for some reasons, you need to
   override the key Mutt-ng wouldnormally use. The ccrryypptt--hhooookk command
   provides a method by which you can specify the ID of the public key to
   be used when encrypting messages to a certain recipient.

   The meaning of "key id" is to be taken broadly in this context: You
   can either put a numerical key ID here, an e-mail address, or even
   just a real name.

24. Adding key sequences to the keyboard buffer

   Usage: push_s_t_r_i_n_g

   This command adds the named string to the keyboard buffer. The string
   may contain control characters, key names and function names like the
   sequence string in the mmaaccrroo command. You may use it to automatically
   run a sequence of commands at startup, or when entering certain
   folders. For example, the following command will automatically
   collapse all threads when entering a folder:
folder-hook . 'push <collapse-all>'

25. Executing functions

   Usage: exec_f_u_n_c_t_i_o_n_ _[_f_u_n_c_t_i_o_n_ _._._._ _]

   This command can be used to execute any function. Functions are listed
   in the ffuunnccttiioonnss. ``exec function'' is equivalent to ``push
   <function>''.

26. Message Scoring

   Usage: score_p_a_t_t_e_r_n_ _v_a_l_u_e

   Usage: unscore_p_a_t_t_e_r_n_ _[_p_a_t_t_e_r_n_ _._._._ _]

   In situations where you have to cope with a lot of emails, e.g. when
   you read many different mailing lists, and take part in discussions,
   it is always useful to have the important messages marked and the
   annoying messages or the ones that you aren't interested in deleted.
   For this purpose, mutt-ng features a mechanism called ``scoring''.

   When you use scoring, every message has a base score of 0. You can
   then use the score command to define patterns and a positive or
   negative value associated with it. When a pattern matches a message,
   the message's score will be raised or lowered by the amount of the
   value associated with the pattern.

score "~f nion@muttng\.org" 50
score "~f @sco\.com" -100

   If the pattern matches, it is also possible to set the score value of
   the current message to a certain value and then stop evaluation:

score "~f santaclaus@northpole\.int" =666

   What is important to note is that negative score values will be
   rounded up to 0.

   To make scoring actually useful, the score must be applied in some
   way. That's what the _s_c_o_r_e_ _t_h_r_e_s_h_o_l_d_s are for. Currently, there are
   three score thresholds:

     * flag threshold: when a message has a score value equal or higher
       than the flag threshold, it will be flagged.
     * read threshold: when a message has a score value equal or lower
       than the read threshold, it will be marked as read.
     * delete threshold: when a message has a score value equal or lower
       than the delete threshold, it will be marked as deleted.

   These three thresholds can be set via the variables
   $$ssccoorree__tthhrreesshhoolldd__rreeaadd, $$ssccoorree__tthhrreesshhoolldd__ffllaagg and
   $$ssccoorree__tthhrreesshhoolldd__ddeelleettee.

   By default, $$ssccoorree__tthhrreesshhoolldd__rreeaadd and $$ssccoorree__tthhrreesshhoolldd__ddeelleettee are set
   to -1, which means that in the default threshold configuration no
   message will ever get marked as read or deleted.

   Scoring gets especially interesting when combined with the color
   command and the ~n pattern:

color index  black   yellow  "~n 10-"
color index  red     yellow  "~n 100-"

   The rules above mark all messages with a score between 10 and 99 with
   black and yellow, and messages with a score greater or equal 100 with
   red and yellow. This might be unusual to you if you're used to e.g.
   slrn's scoring mechanism, but it is more flexible, as it visually
   marks different scores.

27. Spam detection

   Usage: spam_p_a_t_t_e_r_n_ _f_o_r_m_a_t

   Usage: nospam_p_a_t_t_e_r_n

   Mutt-ng has generalized support for external spam-scoring filters. By
   defining your spam patterns with the spam and nospam commands, you can
   _l_i_m_i_t, _s_e_a_r_c_h, and _s_o_r_t your mail based on its spam attributes, as
   determined by the external filter. You also can display the spam
   attributes in your index display using the %H selector in the
   $$iinnddeexx__ffoorrmmaatt variable. (Tip: try %?H?[%H] ? to display spam tags only
   when they are defined for a given message.)

   Your first step is to define your external filter's spam patterns
   using the spam command. _p_a_t_t_e_r_n should be a regular expression that
   matches a header in a mail message. If any message in the mailbox
   matches this regular expression, it will receive a ``spam tag'' or
   ``spam attribute'' (unless it also matches a nospam pattern -- see
   below.) The appearance of this attribute is entirely up to you, and is
   governed by the _f_o_r_m_a_t parameter. _f_o_r_m_a_t can be any static text, but
   it also can include back-references from the _p_a_t_t_e_r_n expression. (A
   regular expression ``back-reference'' refers to a sub-expression
   contained within parentheses.) %1 is replaced with the first
   back-reference in the regex, %2 with the second, etc.

   If you're using multiple spam filters, a message can have more than
   one spam-related header. You can define spam patterns for each filter
   you use. If a message matches two or more of these patterns, and the
   $spam_separator variable is set to a string, then the message's spam
   tag will consist of all the _f_o_r_m_a_t strings joined together, with the
   value of $spam_separator separating them.

   For example, suppose I use DCC, SpamAssassin, and PureMessage. I might
   define these spam settings:
spam "X-DCC-.*-Metrics:.*(....)=many"         "90+/DCC-%1"
spam "X-Spam-Status: Yes"                     "90+/SA"
spam "X-PerlMX-Spam: .*Probability=([0-9]+)%" "%1/PM"
set spam_separator=", "

   If I then received a message that DCC registered with ``many'' hits
   under the ``Fuz2'' checksum, and that PureMessage registered with a
   97% probability of being spam, that message's spam tag would
   read90+/DCC-Fuz2, 97/PM. (The four characters before ``=many'' in a
   DCC report indicate the checksum used -- in this case, ``Fuz2''.)

   If the $spam_separator variable is unset, then each spam pattern match
   supersedes the previous one. Instead of getting joined _f_o_r_m_a_t strings,
   you'll get only the last one to match.

   The spam tag is what will be displayed in the index when you use %H in
   the $index_format variable. It's also the string that the ~H
   pattern-matching expression matches against for _s_e_a_r_c_h and _l_i_m_i_t
   functions. And it's what sorting by spam attribute will use as a sort
   key.

   That's a pretty complicated example, and most people's actual
   environments will have only one spam filter. The simpler your
   configuration, the more effective mutt can be, especially when it
   comes to sorting.

   Generally, when you sort by spam tag, mutt will sort _l_e_x_i_c_a_l_l_y -- that
   is, by ordering strings alphnumerically. However, if a spam tag begins
   with a number, mutt will sort numerically first, and lexically only
   when two numbers are equal in value. (This is like UNIX's sort -n.) A
   message with no spam attributes at all -- that is, one that didn't
   match _a_n_y of your spam patterns -- is sorted at lowest priority.
   Numbers are sorted next, beginning with 0 and ranging upward. Finally,
   non-numeric strings are sorted, with ``a'' taking lowerpriority than
   ``z''. Clearly, in general, sorting by spam tags is most effective
   when you can coerce your filter to give you a raw number. But in case
   you can't, mutt can still do something useful.

   The nospam command can be used to write exceptions to spam patterns.
   If a header pattern matches something in a spam command, but you
   nonetheless do not want it to receive a spam tag, you can list amore
   precise pattern under a nospam command.

   If the _p_a_t_t_e_r_n given to nospam is exactly the same as the _p_a_t_t_e_r_n on
   an existing spam list entry, the effect will be to remove the entry
   from the spam list, instead of adding an exception. Likewise, if the
   _p_a_t_t_e_r_n for a spam command matches an entry on the nospam list, that
   nospam entry will be removed. If the _p_a_t_t_e_r_n for nospam is ``*'', _a_l_l
   _e_n_t_r_i_e_s_ _o_n_ _b_o_t_h_ _l_i_s_t_s will be removed. This might be the default
   action if you use spam and nospam in conjunction with a ffoollddeerr--hhooookk.

   You can have as many spam or nospam commands as you like. You can even
   do your own primitive spam detection within mutt -- for example, if
   you consider all mail from MAILER-DAEMON to be spam, you can use a
   spam command like this:

spam "^From: .*MAILER-DAEMON"       "999"

28. Setting variables

   Usage: set_[_n_o_|_i_n_v_]_v_a_r_i_a_b_l_e_ _[_=_v_a_l_u_e_]_ _[_v_a_r_i_a_b_l_e_._._._]

   Usage: toggle_v_a_r_i_a_b_l_e_ _[_v_a_r_i_a_b_l_e_ _._._._]

   Usage: unset_v_a_r_i_a_b_l_e_ _[_v_a_r_i_a_b_l_e_ _._._._]

   Usage: reset_v_a_r_i_a_b_l_e_ _[_v_a_r_i_a_b_l_e_ _._._._]

   This command is used to set (and unset) vvaarriiaabblleess. There are four
   basic types of variables: boolean, number, string and quadoption.
   _b_o_o_l_e_a_n variables can be _s_e_t (true) or _u_n_s_e_t (false). _n_u_m_b_e_r variables
   can be assigned a positive integer value.

   _s_t_r_i_n_g variables consist of any number of printable characters.
   _s_t_r_i_n_g_s must be enclosed in quotes if they contain spaces or tabs. You
   may also use the ``C'' escape sequences _\_n and _\_t for newline and tab,
   respectively.

   _q_u_a_d_o_p_t_i_o_n variables are used to control whether or not to be prompted
   for certain actions, or to specify a default action. A value of _y_e_s
   will cause the action to be carried out automatically as if you had
   answered yes to the question. Similarly, a value of _n_o will cause the
   the action to be carried out as if you had answered ``no.'' A value of
   _a_s_k_-_y_e_s will cause a prompt with a default answer of ``yes'' and
   _a_s_k_-_n_o will provide a default answer of ``no.''

   Prefixing a variable with ``no'' will unset it. Example: set noaskbcc
   .

   For _b_o_o_l_e_a_n variables, you may optionally prefix the variable name
   with inv to toggle the value (on or off). This is useful when writing
   macros. Example: set invsmart_wrap.

   The toggle command automatically prepends the inv prefix to all
   specified variables.

   The unset command automatically prepends the no prefix to all
   specified variables.

   Using the enter-command function in the _i_n_d_e_x menu, you can query the
   value of a variable by prefixing the name of the variable with a
   question mark:

set ?allow_8bit

   The question mark is actually only required for boolean and quadoption
   variables.

   The reset command resets all given variables to the compile time
   defaults (hopefully mentioned in this manual). If you use the command
   set and prefix the variable with ``&'' this has the same behavior as
   the reset command.

   With the reset command there exists the special variable ``all'',
   which allows you to reset all variables to their system defaults.

29. Reading initialization commands from another file

   Usage: source_f_i_l_e_n_a_m_e_ _[_f_i_l_e_n_a_m_e_ _._._._]

   This command allows the inclusion of initialization commands from
   other files. For example, I place all of my aliases in ~/.mail_aliases
   so that I can make my ~/.muttrc readable and keep my aliases private.

   If the filename begins with a tilde (``~''), it will be expanded to
   the path of your home directory.

   If the filename ends with a vertical bar (|), then _f_i_l_e_n_a_m_e is
   considered to be an executable program from which to read input (eg.
   source ~/bin/myscript|).

30. Removing hooks

   Usage: unhook_[_*_ _|_ _h_o_o_k_-_t_y_p_e_]

   This command permits you to flush hooks you have previously defined.
   You can either remove all hooks by giving the ``*'' character as an
   argument, or you can remove all hooks of a specific type by saying
   something like unhook send.

31. Sharing Setups

31.1. Character Sets

   As users may run mutt-ng on different systems, the configuration must
   be maintained because it's likely that people want to use the setup
   everywhere they use mutt-ng. And mutt-ng tries to help where it can.

   To not produce conflicts with different character sets, mutt-ng allows
   users to specify in which character set their configuration files are
   encoded. Please note that while reading the configuration files, this
   is only respected after the corresponding declaration appears. It's
   advised to put the following at the very beginning of a users
   muttngrc:

set config_charset = "..."

   and replacing the dots with the actual character set. To avoid
   problems while maintaining the setup, vim(1) user's may want to use
   modelines as show in:

# vim:fileencoding=...:

   while, again, replacing the dots with the appropriate name. This tells
   vim(1) as which character set to read and save the file.

31.2. Modularization

   ``Modularization'' means to divide the setup into several files while
   sorting the options or commands by topic. Especially for longer setups
   (e.g. with many hooks), this helps maintaining it and solving trouble.

   When using separation, setups may be, as a whole or in fractions,
   shared over different systems.

31.3. Conditional parts

   When using a configuration on different systems, the user may not
   always have influence on how mutt-ng is installed and which features
   it includes.

   To solve this, mutt-ng contain a feature based on the ``ifdef'' patch
   written for mutt. Its basic syntax is:

ifdef <item> <command>
ifndef <item> <command>

   ...whereby <item> can be one of:

     * a function name
     * a variable name
     * a menu name
     * a feature name

   All available functions, variables and menus are documented elsewhere
   in this manual but ``features'' is specific to these two commands. To
   test for one, prefix one of the following keywords with feature_:
   ncurses, slang, iconv, idn, dotlock, standalone, pop, nntp, imap, ssl,
   gnutls, sasl, sasl2, libesmtp, compressed, color, classic_pgp,
   classic_smime, gpgme, header_cache

   As an example, one can use the following in ~/.muttngrc:

ifdef feature_imap 'source ~/.mutt-ng/setup-imap'
ifdef feature_pop  'source ~/.mutt-ng/setup-pop'
ifdef feature_nntp 'source ~/.mutt-ng/setup-nntp'

   ...to only source ~/.mutt-ng/setup-imap if IMAP support is built in,
   only source ~/.mutt-ng/setup-pop if POP support is built in and only
   source ~/.mutt-ng/setup-nntp if NNTP support is built in.

   An example for testing for variable names can be used if users use
   different revisions of mutt-ng whereby the older one may not have a
   certain variable. To test for the availability of $$iimmaapp__mmaaiill__cchheecckk
   use:

ifdef imap_mail_check 'set imap_mail_check = 300'

   Provided for completeness is the test for menu names. To set
   $$ppaaggeerr__iinnddeexx__lliinneess only if the pager menu is available, use:

ifdef pager 'set pager_index_lines = 10'

   For completeness, too, the opposite of ifdef is provided: ifndef which
   only executes the command if the test fails. For example, the
   following two examples are equivalent:

ifdef feature_ncurses 'source ~/.mutt-ng/setup-ncurses'
ifndef feature_ncurses 'source ~/.mutt-ng/setup-slang'

   ...and...

ifdef feature_slang 'source ~/.mutt-ng/setup-slang'
ifndef feature_slang 'source ~/.mutt-ng/setup-ncurses'

32. Obsolete Variables

   In the process of ensuring and creating more consistency, many
   variables have been renamed and some of the old names were already
   removed. Please see sseecctt--oobbssoolleettee for a complete list.

Chapter 4. Advanced Usage

   _T_a_b_l_e_ _o_f_ _C_o_n_t_e_n_t_s

   11..  RReegguullaarr  EExxpprreessssiioonnss
   22..  PPaatttteerrnnss

        22..11..  CCoommpplleexx  PPaatttteerrnnss
        22..22..  PPaatttteerrnnss  aanndd  DDaatteess

   33..  FFoorrmmaatt  SSttrriinnggss

        33..11..  IInnttrroodduuccttiioonn
        33..22..  CCoonnddiittiioonnaall  EExxppaannssiioonn
        33..33..  MMooddiiffiiccaattiioonnss  aanndd  PPaaddddiinngg

   44..  UUssiinngg  TTaaggss
   55..  UUssiinngg  HHooookkss

        55..11..  MMeessssaaggee  MMaattcchhiinngg  iinn  HHooookkss

   66..  UUssiinngg  tthhee  ssiiddeebbaarr
   77..  EExxtteerrnnaall  AAddddrreessss  QQuueerriieess
   88..  MMaaiillbbooxx  FFoorrmmaattss
   99..  MMaaiillbbooxx  SShhoorrttccuuttss
   1100..  HHaannddlliinngg  MMaaiilliinngg  LLiissttss
   1111..  EEddiittiinngg  tthhrreeaaddss

        1111..11..  LLiinnkkiinngg  tthhrreeaaddss
        1111..22..  BBrreeaakkiinngg  tthhrreeaaddss

   1122..  DDeelliivveerryy  SSttaattuuss  NNoottiiffiiccaattiioonn  ((DDSSNN))  SSuuppppoorrtt
   1133..  PPOOPP33  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))
   1144..  IIMMAAPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))

        1144..11..  TThhee  FFoollddeerr  BBrroowwsseerr
        1144..22..  AAuutthheennttiiccaattiioonn

   1155..  NNNNTTPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))

        1155..11..  AAggaaiinn::  SSccoorriinngg

   1166..  SSMMTTPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))
   1177..  MMaannaaggiinngg  mmuullttiippllee  IIMMAAPP//PPOOPP//NNNNTTPP  aaccccoouunnttss  ((OOPPTTIIOONNAALL))
   1188..  SSttaarrtt  aa  WWWWWW  BBrroowwsseerr  oonn  UURRLLss  ((EEXXTTEERRNNAALL))
   1199..  CCoommpprreesssseedd  ffoollddeerrss  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))

        1199..11..  OOppeenn  aa  ccoommpprreesssseedd  mmaaiillbbooxx  ffoorr  rreeaaddiinngg
        1199..22..  WWrriittee  aa  ccoommpprreesssseedd  mmaaiillbbooxx
        1199..33..  AAppppeenndd  aa  mmeessssaaggee  ttoo  aa  ccoommpprreesssseedd  mmaaiillbbooxx
        1199..44..  EEnnccrryypptteedd  ffoollddeerrss

1. Regular Expressions

   All string patterns in Mutt-ng including those in more complex
   ppaatttteerrnnss must be specified using regular expressions (regexp) in the
   ``POSIX extended'' syntax (which is more or less the syntax used by
   egrep and GNU awk). For your convenience, we have included below a
   brief description of this syntax.

   The search is case sensitive if the pattern contains at least one
   upper case letter, and case insensitive otherwise. Note that ``\''
   must be quoted if used for a regular expression in an initialization
   command: ``\\''.

   A regular expression is a pattern that describes a set of strings.
   Regular expressions are constructed analogously to arithmetic
   expressions, by using various operators to combine smaller
   expressions.

   Note that the regular expression can be enclosed/delimited by either "
   or ' which is useful if the regular expression includes a white-space
   character. See mmuuttttrrcc--ssyynnttaaxx for more information on " and ' delimiter
   processing. To match a literal " or ' you must preface it with \
   (backslash).

   The fundamental building blocks are the regular expressions that match
   a single character. Most characters, including all letters and digits,
   are regular expressions that match themselves. Any metacharacter with
   special meaning may be quoted by preceding it with a backslash.

   The period ``.'' matches any single character. The caret ``^'' andthe
   dollar sign ``$'' are metacharacters that respectively match the empty
   string at the beginning and end of a line.

   A list of characters enclosed by ``]'' and ``]'' matches any single
   character in that list; if the first character of the list is a caret
   ``^'' then it matches any character _n_o_t in the list. For example, the
   regular expression _]_0_1_2_3_4_5_6_7_8_9_] matches any single digit. A range of
   ASCII characters may be specified by giving the first and last
   characters, separated by a hyphen ``-''. Most metacharacters lose
   their special meaning inside lists. To include a literal ``]'' place
   it first in the list. Similarly, to include a literal ``^'' place it
   anywhere but first. Finally, to include a literal hyphen ``-'' place
   it last.

   Certain named classes of characters are predefined. Character classes
   consist of ``[:'', a keyword denoting the class, and ``:]''. The
   following classes are defined by the POSIX standard:

   [:alnum:]
          Alphanumeric characters.

   [:alpha:]
          Alphabetic characters.

   [:blank:]
          Space or tab characters.

   [:cntrl:]
          Control characters.

   [:digit:]
          Numeric characters.

   [:graph:]
          Characters that are both printable and visible. (A space is
          printable, but not visible, while an ``a'' is both.)

   [:lower:]
          Lower-case alphabetic characters.

   [:print:]
          Printable characters (characters that are not control
          characters.)

   [:punct:]
          Punctuation characters (characters that are not letter, digits,
          control characters, or space characters).

   [:space:]
          Space characters (such as space, tab and formfeed, to name a
          few).

   [:upper:]
          Upper-case alphabetic characters.

   [:xdigit:]
          Characters that are hexadecimal digits.

   A character class is only valid in a regular expression inside the
   brackets of a character list. Note that the brackets in these class
   names are part of the symbolic names, and must be included in addition
   to the brackets delimiting the bracket list. For example, _[_[_:_d_i_g_i_t_:_]_]
   is equivalent to _[_0_-_9_].

   Two additional special sequences can appear in character lists. These
   apply to non-ASCII character sets, which can have single symbols
   (calledcollating elements) that are represented with more than one
   character, as well as several characters that are equivalent for
   collating or sorting purposes:

   Collating Symbols
          A collating symbol is a multi-character collating element
          enclosed in ``[.'' and ``.]''. For example, if ``ch'' is a
          collating element, then _[_[_._c_h_._]_] is a regexp that matches this
          collating element, while _[_c_h_] is a regexp that matches either
          ``c'' or ``h''.

   Equivalence Classes
          An equivalence class is a locale-specific name for a list of
          characters that are equivalent. The name is enclosed in ``[=''
          and ``=]''. For example, the name ``e'' might be used to
          represent all of ``'' ``'' and ``e''. In this case, _[_[_=_e_=_]_]
          is a regexp that matches any of ``'', ``'' and ``e''.

   A regular expression matching a single character may be followed by
   one of several repetition operators:

   ?
          The preceding item is optional and matched at most once.

   *
          The preceding item will be matched zero or more times.

   +
          The preceding item will be matched one or more times.

   {n}
          The preceding item is matched exactly _n times.

   {n,}
          The preceding item is matched _n or more times.

   {,m}
          The preceding item is matched at most _m times.

   {n,m}
          The preceding item is matched at least _n times, but no more
          than _m times.

   Two regular expressions may be concatenated; the resulting regular
   expression matches any string formed by concatenating two substrings
   that respectively match the concatenated subexpressions.

   Two regular expressions may be joined by the infix operator ``|''; the
   resulting regular expression matches any string matching either
   subexpression.

   Repetition takes precedence over concatenation, which in turn takes
   precedence over alternation. A whole subexpression may be enclosed in
   parentheses to override these precedence rules.

   _N_o_t_e_: If you compile Mutt-ng with the GNU _r_x package, the following
   operators may also be used in regular expressions:

   \\y
          Matches the empty string at either the beginning or the end of
          a word.

   \\B
          Matches the empty string within a word.

   \\<
          Matches the empty string at the beginning of a word.

   \\>
          Matches the empty string at the end of a word.

   \\w
          Matches any word-constituent character (letter, digit, or
          underscore).

   \\W
          Matches any character that is not word-constituent.

   \\`
          Matches the empty string at the beginning of a buffer (string).

   \\'
          Matches the empty string at the end of a buffer.

   Please note however that these operators are not defined by POSIX, so
   they may or may not be available in stock libraries on various
   systems.

2. Patterns

   Mutt-ng's pattern language provides a simple yet effective way to set
   up rules to match messages, e.g. for operations like tagging and
   scoring. A pattern consists of one or more sub-pattern, which can be
   logically grouped, ORed, and negated. For a complete listing of these
   patterns, please refer to table ppaatttteerrnnss in the Reference chapter.

   It must be noted that in this table, EXPR is a regular expression. For
   ranges, the forms <[MAX], >>[MIN], [MIN]- and -[MAX] are also
   possible.

2.1. Complex Patterns

   It is possible to combine several sub-patterns to a more complex
   pattern. The most simple possibility is to logically AND several
   patterns by stringing them together:

~s 'SPAM' ~U

   The pattern above matches all messages that contain ``SPAM'' in the
   subject and are unread.

   To logical OR patterns, simply use the | operator. This one especially
   useful when using local groups:

~f ("nion@muttng\.org"|"ak@muttng\.org"|"pdmef@muttng\.org")
(~b mutt-ng|~s Mutt-ng)
!~x '@synflood\.at'

   The first pattern matches all messages that were sent by one of the
   mutt-ng maintainers, while the seconds pattern matches all messages
   that contain ``mutt-ng'' in the message body or ``Mutt-ng'' in the
   subject. The third pattern matches all messages that do not contain
   ``@synflood\.at'' in the References: header, i.e. messages that are
   not an (indirect) reply to one of my messages. A pattern can be
   logicall negated using the ! operator.

2.2. Patterns and Dates

   When using dates in patterns, the dates must be specified in a special
   format, i.e. DD/MM/YYYY. If you don't specify month or year, they
   default to the current month or year. When using date ranges, and you
   specify only the minimum or the maximum, the specified date will be
   excluded, e.g. 01/06/2005- matches against all messages _a_f_t_e_r Juni
   1st, 2005.

   It is also possible to use so-called ``error margins'' when specifying
   date ranges. You simply specify a date, and then the error margin.
   This margin needs to contain the information whether it goes ``forth''
   or ``back'' in time, by using + and -. Then follows a number and a
   unit, i.e. y for years, m for months, w for weeks and d for days. If
   you use the special * sign, it means that the error margin goes to
   both``directions'' in time.

~d 01/01/2005+1y
~d 18/10/2004-2w
~d 28/12/2004*1d

   The first pattern matches all dates between January 1st, 2005 and
   January 1st 2006. The second pattern matches all dates between October
   18th, 2004 and October 4th 2004 (2 weeks before 18/10/2004), while the
   third pattern matches all dates 1 day around December 28th, 2004 (i.e.
   Dec 27th, 28th and 29th).

   Relative dates are also very important, as they make it possible to
   specify date ranges between a fixed number of units and the current
   date. How this works can be seen in the following example:

~d >2w # messages older than two weeks
~d <3d # messages newer than 3 days
~d =1m # messages that are exactly one month old

3. Format Strings

3.1. Introduction

   The so called _F_o_r_m_a_t_ _S_t_r_i_n_g_s offer great flexibility when configuring
   mutt-ng. In short, they describe what items to print out how in menus
   and status messages.

   Basically, they work as this: for different menus and bars, there's a
   variable specifying the layout. For every item available, there is a
   so called _e_x_p_a_n_d_o.

   For example, when running mutt-ng on different machines or different
   versions for testing purposes, it may be interesting to have the
   following information always printed on screen when one is in the
   index:

     * the current hostname
     * the current mutt-ng version number

   The setting for the status bar of the index is controlled via the
   $$ssttaattuuss__ffoorrmmaatt variable. For the hostname and version string, there's
   an expando for $status_format: %h expands to the hostname and %v to
   the version string. When just configuring:

set status_format = "%v on %h: ..."

   mutt-ng will replace the sequence %v with the version string and %h
   with the host's name. When you are, for example, running mutt-ng
   version 1.5.9i on host mailhost, you'll see the following when you're
   in the index:

Mutt-ng 1.5.9i on mailhost: ...

   In the index, there're more useful information one could want to see:

     * which mailbox is open
     * how man new, flagged or postponed messages
     * ...

   To include the mailbox' name is as easy as:

set status_format = "%v on %h: %B: ...

   When the currently opened mailbox is Inbox, this will be expanded to:

Mutt-ng 1.5.9i on mailhost: Inbox: ...

   For the number of certain types of messages, one more feature of the
   format strings is extremely useful. If there aren't messages of a
   certain type, it may not be desired to print just that there aren't
   any but instead only print something if there are any.

3.2. Conditional Expansion

   To only print the number of messages if there are new messages in the
   current mailbox, further extend $status_format to:

set status_format = "%v on %h: %B %?n?%n new? ...

   This feature is called _n_o_n_z_e_r_o_-_p_r_i_n_t_i_n_g and works as this: some
   expandos may be optionally printed nonzero, i.e. a portion of the
   format string is only evaluated if the value of the expando is
   different from zero. The basic syntax is:

%?<item>?<string if nonzero>?

   which tells mutt-ng to only look at <string if nonzero> if the value
   of the %<item%gt; expando is different from zero. In our example, we
   used n as the expando to check for and %n new as the optional nonzero
   string.

   But this is not all: this feature only offers one alternative: ``print
   something if not zero.'' Mutt-ng does, as you might guess, also
   provide a logically complete version: ``if zero, print something and
   else print something else.'' This is achieved by the following syntax
   for those expandos which may be printed nonzero:

%?<item>?<string if nonzero>&<string if zero>?

   Using this we can make mutt-ng to do the following:

     * make it print ``_n new messages'' whereby _n is the count but only
       if there new ones
     * and make it print ``no new messages'' if there aren't any

   The corresponding configuration is:

set status_format = "%v on %h: %B: %?n?%n new messages&no new messages? ...

   This doubles the use of the ``new messages'' string because it'll get
   always printed. Thus, it can be shortened to:

set status_format = "%v on %h: %B: %?n?%n&no? new messages ...

   As you might see from this rather simple example, one can create very
   complex but fancy status messages. Please see the reference chapter
   for expandos and those which may be printed nonzero.

3.3. Modifications and Padding

   Besides the information given so far, there're even more features of
   format strings:

     * When specifying %_<item> instead of just %<item>, mutt-ng will
       convert all characters in the expansion of <item> to lowercase.
     * When specifying %:<item> instead of just %<item>, mutt-ng will
       convert all dots in the expansion of <item> to underscores (_).

   Also, there's a feature called _P_a_d_d_i_n_g supplied by the following two
   expandos: %|X and %>X .

   %|X
          When this occurs, mutt-ng will fill the rest of the line with
          the character X. In our example, filling the rest of the line
          with dashes is done by setting:

set status_format = "%v on %h: %B: %?n?%n&no? new messages %|-"

   %>X
          Since the previous expando stops at the end of line, there must
          be a way to fill the gap between two items via the %>X expando:
          it puts as many characters X in between two items so that the
          rest of the line will be right-justified. For example, to not
          put the version string and hostname of our example on the left
          but on the right and fill the gap with spaces, one might use
          (note the space after %>):

set status_format = "%B: %?n?%n&no? new messages %> (%v on %h)"

4. Using Tags

   Sometimes it is desirable to perform an operation on a group of
   messages all at once rather than one at a time. An example might be to
   save messages to a mailing list to a separate folder, or to delete all
   messages with a given subject. To tag all messages matching a pattern,
   use the tag-pattern function, which is bound to ``shift-T'' by
   default. Or you can select individual messages by hand using the
   ``tag-message'' function, which is bound to ``t'' by default. See
   ppaatttteerrnnss for Mutt-ng's pattern matching syntax.

   Once you have tagged the desired messages, you can use the
   ``tag-prefix'' operator, which is the ``;'' (semicolon) key by
   default. When the ``tag-prefix'' operator is used, the _n_e_x_t operation
   will be applied to all tagged messages if that operation can be used
   in that manner. If the $$aauuttoo__ttaagg variable is set, the next operation
   applies to the tagged messages automatically, without requiring the
   ``tag-prefix''.

   In mmaaccrroo or ppuusshh commands, you can use the ``tag-prefix-cond''
   operator. If there are no tagged messages, mutt will "eat" the rest of
   the macro to abort it's execution.Mutt-ng will stop "eating" the macro
   when it encounters the ``end-cond'' operator; after this operator the
   rest of the macro will be executed asnormal.

5. Using Hooks

   A _h_o_o_k is a concept borrowed from the EMACS editor which allows you to
   execute arbitrary commands before performing some operation. For
   example, you may wish to tailor your configuration based upon which
   mailbox you are reading, or to whom you are sending mail. In the
   Mutt-ng world, a _h_o_o_k consists of a rreeggeexxpp or ppaatttteerrnnss along with a
   configuration option/command. See
     * ffoollddeerr--hhooookk
     * sseenndd--hhooookk
     * mmeessssaaggee--hhooookk
     * ssaavvee--hhooookk
     * mmbbooxx--hhooookk
     * ffcccc--hhooookk
     * ffcccc--ssaavvee--hhooookk

   for specific details on each type of _h_o_o_k available.

   _N_o_t_e_: if a hook changes configuration settings, these changes remain
   effective until the end of the current mutt session. As this is
   generally not desired, a default hook needs to be added before all
   other hooks to restore configuration defaults. Here is an example with
   sseenndd--hhooookk and the my_hdr directive:

send-hook . 'unmy_hdr From:'
send-hook '~C ^b@b\.b$' my-hdr from: c@c.c

5.1. Message Matching in Hooks

   Hooks that act upon messages (  sseenndd--hhooookk, ssaavvee--hhooookk, ffcccc--hhooookk,
   mmeessssaaggee--hhooookk )are evaluated in a slightly different manner. For the
   other types of hooks, a rreeggeexxpp is sufficient. But in dealing with
   messages a finer grain of control is needed for matching since for
   different purposes you want to match different criteria.

   Mutt-ng allows the use of the ppaatttteerrnnss language for matching messages
   in hook commands. This works in exactly the same way as it would when
   _l_i_m_i_t_i_n_g or_s_e_a_r_c_h_i_n_g the mailbox, except that you are restricted to
   those operators which match information mutt extracts from the header
   of the message (i.e. from, to, cc, date, subject, etc.).

   For example, if you wanted to set your return address based upon
   sending mail to a specific address, you could do something like:
send-hook '~t ^me@cs\.hmc\.edu$' 'my-hdr From: Mutt-ng User <user@host>'

   which would execute the given command when sending mail to
   _m_e_@_c_s_._h_m_c_._e_d_u.

   However, it is not required that you write the pattern to match using
   the full searching language. You can still specify a simple _r_e_g_u_l_a_r
   _e_x_p_r_e_s_s_i_o_n like the other hooks, in which case Mutt-ng will translate
   your pattern into the full language, using the translation specified
   by the ddeeffaauulltt--hhooookk variable. The pattern is translated at the time
   the hook is declared, so the value of ddeeffaauulltt--hhooookk that is in effect
   at that time will be used.

6. Using the sidebar

   The sidebar, a feature specific to Mutt-ng, allows you to use a
   mailbox listing which looks very similar to the ones you probably know
   from GUI mail clients. The sidebar lists all specified mailboxes,
   shows the number in each and highlights the ones with new email Use
   the following configuration commands:
set sidebar_visible="yes"
set sidebar_width=25

   If you want to specify the mailboxes you can do so with:
set mbox='=INBOX'
mailboxes INBOX \
MBOX1 \
MBOX2 \
...

   You can also specify the colors for mailboxes with new mails by using:
color sidebar_new red black
color sidebar white black

   Reasonable key bindings look e.g. like this:
bind index \Cp sidebar-prev
bind index \Cn sidebar-next
bind index \Cb sidebar-open
bind pager \Cp sidebar-prev
bind pager \Cn sidebar-next
bind pager \Cb sidebar-open

macro index B ':toggle sidebar_visible^M'
macro pager B ':toggle sidebar_visible^M'

   You can then go up and down by pressing Ctrl-P and Ctrl-N, and switch
   on and off the sidebar simply by pressing 'B'.

7. External Address Queries

   Mutt-ng supports connecting to external directory databases such as
   LDAP, ph/qi, bbdb, or NIS through a wrapper script which connects to
   mutt using a simple interface. Using the $$qquueerryy__ccoommmmaanndd variable, you
   specify the wrapper command to use. For example:

set query_command = "mutt_ldap_query.pl '%s'"

   The wrapper script should accept the query on the command-line. It
   should return a one line message, then each matching response on a
   single line, each line containing a tab separated address then name
   thensome other optional information. On error, or if there are no
   matching addresses, return a non-zero exit code and a one line error
   message.

   An example multiple response output:
Searching database ... 20 entries ... 3 matching:
me@cs.hmc.edu           Michael Elkins  mutt dude
blong@fiction.net       Brandon Long    mutt and more
roessler@guug.de        Thomas Roessler mutt pgp

   There are two mechanisms for accessing the query function of mutt. One
   is to do a query from the index menu using the query function
   (default: Q). This will prompt for a query, then bring up the query
   menu which will list the matching responses. From the query menu, you
   can select addresses to create aliases, or to mail. You can tag
   multiple addressesto mail, start a new query, or have a new query
   appended to the current responses.

   The other mechanism for accessing the query function is for address
   completion, similar to the alias completion. In any prompt for address
   entry, you can use the complete-query function (default: ^T) to run a
   query based on the current address you have typed. Like aliases, mutt
   will look for what you have typed back to the last space or comma. If
   there is a single response for that query, mutt will expand the
   address in place. If there are multiple responses, mutt will activate
   the querymenu. At the query menu, you can select one or more addresses
   to be added to the prompt.

8. Mailbox Formats

   Mutt-ng supports reading and writing of four different mailbox
   formats: mbox, MMDF, MH and Maildir. The mailbox type is autodetected,
   so there is no need to use a flag for different mailbox types. When
   creating newmailboxes, Mutt-ng uses the default specified with the
   $$mmbbooxx__ttyyppee variable.

   _m_b_o_x. This is the most widely used mailbox format for UNIX. All
   messages are stored in a single file. Each message has a line of the
   form:

From me@cs.hmc.edu Fri, 11 Apr 1997 11:44:56 PST

   to denote the start of a new message (this is often referred to as the
   ``From_'' line).

   _M_M_D_F. This is a variant of the _m_b_o_x format. Each message is surrounded
   by lines containing ``^A^A^A^A'' (four control-A's).

   _M_H. A radical departure from _m_b_o_x and _M_M_D_F, a mailbox consists of a
   directory and each message is stored in a separate file. The filename
   indicates the message number (however, this is may not correspond to
   the message number Mutt-ng displays). Deleted messages arerenamed with
   a comma (,) prepended to the filename. _N_o_t_e_: Mutt detects this type of
   mailbox by looking for either .mh_sequences or .xmhcache (needed to
   distinguish normal directories from MH mailboxes).

   _M_a_i_l_d_i_r. The newest of the mailbox formats, used by the Qmail MTA (a
   replacement for sendmail). Similar to _M_H, except that it adds three
   subdirectories of the mailbox: _t_m_p, _n_e_w and _c_u_r .Filenames for the
   messages are chosen in such a way they are unique, even when
   twoprograms are writing the mailbox over NFS, which means that no file
   locking is needed.

9. Mailbox Shortcuts

   There are a number of built in shortcuts which refer to specific
   mailboxes. These shortcuts can be used anywhere you are prompted for a
   file or mailbox path.

     * ! -- refers to your $$ssppoooollffiillee (incoming) mailbox
     * > -- refers to your $$mmbbooxx file
     * < -- refers to your $$rreeccoorrdd file
     * ^ -- refers to the current mailbox
     * - or !! -- refers to the file you've last visited
     * ~ -- refers to your home directory
     * = or + -- refers to your $$ffoollddeerr directory
     * @_a_l_i_a_s -- refers to the ssaavvee--hhooookk as determined by the address of
       the alias

10. Handling Mailing Lists

   Mutt-ng has a few configuration options that make dealing with large
   amounts of mail easier. The first thing you must do is to let Mutt
   know what addresses you consider to be mailing lists (technically this
   does not have to be a mailing list, but that is what it is most often
   used for), and what lists you are subscribed to. This is accomplished
   through the use of the lliissttss commands in your muttrc.

   Now that Mutt-ng knows what your mailing lists are, it can do several
   things, the first of which is the ability to show the name of a list
   through which you received a message (i.e., of a subscribed list) in
   the _i_n_d_e_x menu display. This is useful to distinguish between personal
   and list mail in the same mailbox. In the $$iinnddeexx__ffoorrmmaatt variable, the
   escape ``%L'' will return the string ``To <list>'' when ``list''
   appears in the ``To'' field, and ``Cc <list>'' when it appears in the
   ``Cc'' field (otherwise it returns the name of the author).

   Often times the ``To'' and ``Cc'' fields in mailing list messages tend
   to get quite large. Most people do not bother to remove the author of
   the message they are reply to from the list, resulting in two or more
   copies being sent to that person. The ``list-reply'' function, which
   by default is bound to ``L'' in the _i_n_d_e_x menu and _p_a_g_e_r, helps reduce
   the clutter by only replying to the known mailing list addresses
   instead of all recipients (except as specified by Mail-Followup-To,
   see below).

   Mutt-ng also supports the Mail-Followup-To header. When you send a
   message to a list of recipients which includes one or several
   subscribed mailing lists, and if the $$ffoolllloowwuupp__ttoo option is set, mutt
   will generate a Mail-Followup-To header which contains all the
   recipients to whom you send this message, but not your address. This
   indicates that group-replies or list-replies (also known as
   ``followups'') to this message should only be sent to the original
   recipients of the message, and not separately to you - you'll receive
   your copy through one of the mailing lists you are subscribed to.

   Conversely, when group-replying or list-replying to a message which
   has a Mail-Followup-To header, mutt will respect this header if the
   $$hhoonnoorr__ffoolllloowwuupp__ttoo configuration variable is set. Using list-reply
   will in this case also make sure that the reply goes to the mailing
   list, even if it's not specified in the list of recipients in the
   Mail-Followup-To.

   Note that, when header editing is enabled, you can create a
   Mail-Followup-To header manually. Mutt-ng will only auto-generate this
   header if it doesn't exist when you send the message.

   The other method some mailing list admins use is to generate a
   ``Reply-To'' field which points back to the mailing list address
   rather than the author of the message. This can create problems when
   trying to reply directly to the author in private, since most mail
   clients will automatically reply to the address given in the
   ``Reply-To'' field. Mutt-ng uses the $$rreeppllyy__ttoo variable to help decide
   which address to use. If set to _a_s_k_-_y_e_s or _a_s_k_-_n_o, you will be
   prompted as to whether or not you would like to use the address given
   inthe ``Reply-To'' field, or reply directly to the address given in
   the ``From'' field. When set to _y_e_s, the ``Reply-To'' field will be
   used when present.

   The ``X-Label:'' header field can be used to further identify mailing
   lists or list subject matter (or just to annotate messages
   individually). The $$iinnddeexx__ffoorrmmaatt variable's ``%y'' and ``%Y'' escapes
   can be used to expand ``X-Label:'' fields in the index, and Mutt-ng's
   pattern-matcher can match regular expressions to ``X-Label:'' fields
   with the ``~y'' selector. ``X-Label:'' is not a standard message
   header field, but it can easily be inserted by procmailand other mail
   filtering agents.

   Lastly, Mutt-ng has the ability to ssoorrtt the mailbox into tthhrreeaaddss. A
   thread is a group of messages which all relate to the same subject.
   This is usually organized into a tree-like structure where a message
   and all of its replies are represented graphically. If you've ever
   used a threaded news client, this is the same concept. It makes
   dealingwith large volume mailing lists easier because you can easily
   delete uninteresting threads and quickly find topics of value.

11. Editing threads

   Mutt-ng has the ability to dynamically restructure threads that are
   broken either by misconfigured software or bad behavior from some
   correspondents. This allows to clean your mailboxes formats) from
   these annoyances which make it hard to follow a discussion.

11.1. Linking threads

   Some mailers tend to "forget" to correctly set the "In-Reply-To:" and
   "References:" headers when replying to a message. This results in
   broken discussions because Mutt-ng has not enough information to guess
   the correct threading. You can fix this by tagging the reply, then
   moving to the parent message and using the ``link-threads'' function
   (bound to & by default). The reply will then be connected to this
   "parent" message.

   You can also connect multiple children at once, tagging them and using
   the tag-prefix command (';') or the auto_tag option.

11.2. Breaking threads

   On mailing lists, some people are in the bad habit of starting a new
   discussion by hitting "reply" to any message from the list and
   changing the subject to a totally unrelated one. You can fix such
   threads by using the ``break-thread'' function (boundby default to #),
   which will turn the subthread starting from the current message into a
   whole different thread.

12. Delivery Status Notification (DSN) Support

   RRffCC  11889944 defines a set of MIME content types for relaying information
   about the status of electronic mail messages. These can be thought of
   as ``return receipts.''

   Users can make use of it in one of the following two ways:

     * Berkeley sendmail 8.8.x currently has some command line options in
       which the mail client can make requests as to what type of status
       messages should be returned.
     * The SMTP support via libESMTP supports it, too.

   To support this, there are two variables:

     * $$ddssnn__nnoottiiffyy is used to request receipts for different results
       (such as failed message,message delivered, etc.).
     * $$ddssnn__rreettuurrnn requests how much of your message should be returned
       with the receipt (headers or full message).

   Please see the reference chapter for possible values.

13. POP3 Support (OPTIONAL)

   If Mutt-ng was compiled with POP3 support (by running the _c_o_n_f_i_g_u_r_e
   script with the _-_-_e_n_a_b_l_e_-_p_o_p flag), it has the ability to work with
   mailboxes located on a remote POP3 server and fetch mail for local
   browsing.

   You can access the remote POP3 mailbox by selecting the folder
   pop://popserver/.

   You can select an alternative port by specifying it with the server,
   i.e.: pop://popserver:port/.

   You can also specify different username for each folder, i.e.:
   pop://username@popserver[:port]/.

   Polling for new mail is more expensive over POP3 than locally. For
   this reason the frequency at which Mutt-ng will check for mail
   remotely can be controlled by the $$ppoopp__mmaaiill__cchheecckk variable, which
   defaults to every 60 seconds.

   If Mutt-ng was compiled with SSL support (by running the _c_o_n_f_i_g_u_r_e
   script with the _-_-_w_i_t_h_-_s_s_l flag), connections to POP3 servers can be
   encrypted. This naturally requires that the server supports SSL
   encrypted connections. To access a folder with POP3/SSL, you should
   use pops: prefix, ie: pops://[username@]popserver[:port]/.

   Another way to access your POP3 mail is the _f_e_t_c_h_-_m_a_i_l function
   (default: G). It allows to connect to ppoopp--hhoosstt ,fetch all your new
   mail and place it in the local $$ssppoooollffiillee. After this point, Mutt-ng
   runs exactly as if the mail had always been local.

   _N_o_t_e_: If you only need to fetch all messages to local mailbox you
   should consider using a specialized program, such as fetchmail(1).

14. IMAP Support (OPTIONAL)

   If Mutt-ng was compiled with IMAP support (by running the _c_o_n_f_i_g_u_r_e
   script with the _-_-_e_n_a_b_l_e_-_i_m_a_p flag), it has the ability to work with
   folders located on a remote IMAP server.

   You can access the remote inbox by selecting the folder via its URL:

imap://imapserver/INBOX

   where imapserver is the name of the IMAP server and INBOX is the
   special name for your spool mailbox on the IMAP server. If you want to
   access another mail folder at the IMAP server, you should use

imap://imapserver/path/to/folder

   where path/to/folder is the path of the folder you want to access. You
   can select an alternative port by specifying it with the server, i.e.:

imap://imapserver:port/INBOX

   You can also specify different username for each folder by prenpending
   your username and an @ symbol to the server's name.

   If Mutt-ng was compiled with SSL support (by running the _c_o_n_f_i_g_u_r_e
   script with the _-_-_w_i_t_h_-_s_s_l flag), connections to IMAP servers can be
   encrypted. This naturally requires that the server supports SSL
   encrypted connections. To access a folder with IMAP/SSL, you only need
   to substitute the initial imap:// by imaps:// in the above examples.

   Note that not all servers use / as the hierarchy separator. Mutt-ng
   should correctly notice which separator is being used by the server
   and convertpaths accordingly.

   When browsing folders on an IMAP server, you can toggle whether to
   look at only the folders you are subscribed to, or all folders with
   the _t_o_g_g_l_e_-_s_u_b_s_c_r_i_b_e_d command. See also the $$iimmaapp__lliisstt__ssuubbssccrriibbeedd
   variable.

   Polling for new mail on an IMAP server can cause noticeable delays.
   So, you'll want to carefully tune the $$iimmaapp__mmaaiill__cchheecckk and $$ttiimmeeoouutt
   variables.

   Note that if you are using mbox as the mail store on UW servers prior
   tov12.250, the server has been reported to disconnect a client if
   another client selects the same folder.

14.1. The Folder Browser

   As of version 1.2, mutt supports browsing mailboxes on an IMAP server.
   This is mostly the same as the local file browser, with the following
   differences:
     * Instead of file permissions, mutt displays the string "IMAP",
       possibly followed by the symbol "+", indicating that the entry
       contains both messages and subfolders. On Cyrus-like servers
       folders will often contain both messages and subfolders.
     * For the case where an entry can contain both messages and
       subfolders, the selection key (bound to enter by default) will
       choose to descend into the subfolder view. If you wish to view the
       messages in that folder, you must use view-file instead (bound to
       space by default).
     * You can create, delete and rename mailboxes with the
       create-mailbox, delete-mailbox, and rename-mailbox commands
       (default bindings: C , d and r, respectively). You may also
       subscribe and unsubscribe to mailboxes (normally these are bound
       to s and u, respectively).

14.2. Authentication

   Mutt-ng supports four authentication methods with IMAP servers: SASL,
   GSSAPI, CRAM-MD5, and LOGIN (there is a patch by Grant Edwards to add
   NTLM authentication for you poor exchange users out there, but it has
   yet to be integrated into the main tree). There is also support for
   the pseudo-protocol ANONYMOUS, which allows you to log in to a public
   IMAP server without having an account. To use ANONYMOUS, simply make
   your username blank or "anonymous".

   SASL is a special super-authenticator, which selects among several
   protocols (including GSSAPI, CRAM-MD5, ANONYMOUS, and DIGEST-MD5) the
   most secure method available on your host and the server. Using some
   of these methods (including DIGEST-MD5 and possibly GSSAPI), your
   entire session will be encrypted and invisible to those teeming
   network snoops. It is the best option if you have it. To use it, you
   must have the Cyrus SASL libraryinstalled on your system and compile
   mutt with the _-_-_w_i_t_h_-_s_a_s_l flag.

   Mutt-ng will try whichever methods are compiled in and available on
   the server, in the following order: SASL, ANONYMOUS, GSSAPI, CRAM-MD5,
   LOGIN.

   There are a few variables which control authentication:
     * $$iimmaapp__uusseerr - controls the username under which you request
       authentication on the IMAP server, for all authenticators. This is
       overridden by an explicit username in the mailbox path (i.e. by
       using a mailbox name of the form {user@host}).
     * $$iimmaapp__ppaassss - a password which you may preset, used by all
       authentication methods where a password is needed.
     * $$iimmaapp__aauutthheennttiiccaattoorrss - a colon-delimited list of IMAP
       authentication methods to try, in the order you wish to try them.
       If specified, this overrides mutt's default (attempt everything,
       in the order listed above).

15. NNTP Support (OPTIONAL)

   If compiled with ``--enable-nntp'' option, Mutt-ng can read news from
   a newsserver via NNTP. You can open a newsgroup with the
   ``change-newsgroup'' function from the index/pager which is by default
   bound to i.

   The Default newsserver can be obtained from the $NNTPSERVER
   environment variable. Like other news readers, info about subscribed
   newsgroups is saved in a file as specified by the $$nnnnttpp__nneewwssrrcc
   variable. Article headers are cached and can be loaded from a file
   when a newsgroup is entered instead loading from newsserver;
   currently, this caching mechanism still is different from the header
   caching for maildir/IMAP.

15.1. Again: Scoring

   Especially for Usenet, people often ask for advanced filtering and
   scoring functionality. Of course, mutt-ng has scoring and allows a
   killfile, too. How to use a killfile has been discussed in MMeessssaaggee
   SSccoorriinngg.

   What has not been discusses in detail is mutt-ng's built-in realname
   filter. For may newsreaders including those for ``advanced users''
   like _s_l_r_n or _t_i_n, there are frequent request for such functionality.
   The solutions offered often are complicated regular expressions.

   In mutt-ng this is as easy as

score ~* =42

   This tells mutt-ng to apply a score of 42 to all messages whose sender
   specified a valid realname and a valid email address. Using

score !~* =42

   on the contrary applies a score of 42 to all messages _n_o_t matching
   those criteria which are very strict:

     * Email addresses must be valid according to RRffCC  22882222
     * the name must consist of at least 2 fields whereby a field must
       not end in a dot. This means that ``Joe User'' and ``Joe A.User''
       are valid while ``J. User'' and ``J. A. User'' aren't.
     * it's assumed that users are interested in reading their own mail
       and mail from people who they have defined an alias forso that
       those 2 groups of messages are excluded from the strict rules.

16. SMTP Support (OPTIONAL)

   Mutt-ng can be built using a library called ``libESMTP'' which
   provides SMTP functionality. When configure was called with
   --with-libesmtp or the output muttng -v contains +USE_LIBESMTP, this
   will be or is the case already. The SMTP support includes support for
   Delivery Status Notification (see ddssnn section) as well as handling the
   8BITMIME flag controlled via $$uussee__88bbiittmmiimmee.

   To enable sending mail directly via SMTP without an MTA such as
   Postfix or SSMTP and the like, simply set the $$ssmmttpp__hhoosstt variable
   pointing to your SMTP server.

   Authentication mechanisms are available via the $$ssmmttpp__uusseerr and
   $$ssmmttpp__ppaassss variables.

   Transport Encryption via the StartTLS command is also available. For
   this to work, first of all Mutt-ng must be built with SSL or GNUTLS.
   Secondly, the $$ssmmttpp__uussee__ttllss variable must be either set to ``enabled''
   or ``required.'' In both cases, StartTLS will be used if the server
   supports it: for the second case, the connection will fail ifit
   doesn't while switching back to unencrypted communication for the
   first one.

   Some mail providers require user's to set a particular envelope
   sender, i.e. they allow for only one value which may not be what the
   user wants to send as the From: header. In this case, the variable
   $$ssmmttpp__eennvveellooppee may be used to set the envelope different from the
   From: header.

17. Managing multiple IMAP/POP/NNTP accounts (OPTIONAL)

   If you happen to have accounts on multiple IMAP and/or POP servers,
   you may find managing all the authentication settings inconvenient and
   error-prone. The aaccccoouunntt--hhooookk command may help. This hook works like
   ffoollddeerr--hhooookk but is invoked whenever you access a remote mailbox
   (including inside the folder browser), not just when you open the
   mailbox.

   Some examples:

account-hook . 'unset imap_user; unset imap_pass; unset tunnel'
account-hook imap://host1/ 'set imap_user=me1 imap_pass=foo'
account-hook imap://host2/ 'set tunnel="ssh host2 /usr/libexec/imapd"'

18. Start a WWW Browser on URLs (EXTERNAL)

   If a message contains URLs (_u_n_i_f_i_e_d_ _r_e_s_o_u_r_c_e_ _l_o_c_a_t_o_r = address in the
   WWW space like _h_t_t_p_:_/_/_w_w_w_._m_u_t_t_._o_r_g_/), it is efficient to get a menu
   with all the URLs and start a WWW browser on one of them. This
   functionality is provided by the external urlview program which can be
   retrieved at <<ffttpp::////ffttpp..mmuutttt..oorrgg//mmuutttt//ccoonnttrriibb//>> and the configuration
   commands:
macro index \cb |urlview\n
macro pager \cb |urlview\n

19. Compressed folders Support (OPTIONAL)

   If Mutt-ng was compiled with compressed folders support (by running
   the _c_o_n_f_i_g_u_r_e script with the _-_-_e_n_a_b_l_e_-_c_o_m_p_r_e_s_s_e_d flag), Mutt can open
   folders stored in an arbitrary format, provided that the user has a
   script to convert from/to this format to one of the accepted.

   The most common use is to open compressed archived folders e.g. with
   gzip.

   In addition, the user can provide a script that gets a folder in an
   accepted format and appends its context to the folder in the
   user-defined format, which may be faster than converting the entire
   folder to the accepted format, appending to it and converting back to
   the user-defined format.

   There are three hooks defined (ooppeenn--hhooookk, cclloossee--hhooookk and aappppeenndd--hhooookk
   )which define commands to uncompress and compress a folder and to
   append messages to an existing compressed folder respectively.

   For example:

open-hook \\.gz$ "gzip -cd %f > %t"
close-hook \\.gz$ "gzip -c %t > %f"
append-hook \\.gz$ "gzip -c %t >> %f"

   You do not have to specify all of the commands. If you omit
   aappppeenndd--hhooookk ,the folder will be open and closed again each time you
   will add to it. If you omit cclloossee--hhooookk (or give empty command) , the
   folder will be open in the mode. If you specify aappppeenndd--hhooookk though
   you'll be able to append to the folder.

   Note that Mutt-ng will only try to use hooks if the file is not in one
   of the accepted formats. In particular, if the file is empty, mutt
   supposes it is not compressed. This is important because it allows the
   use of programs that do not have well defined extensions. Just use "."
   as a regexp. But this may be surprising if your compressing script
   produces empty files. In this situation, unset $$ssaavvee__eemmppttyy ,so that
   the compressed file will be removed if you delete all of the messages.

19.1. Open a compressed mailbox for reading

   Usage: ooppeenn--hhooookk_r_e_g_e_x_p "_c_o_m_m_a_n_d"

   The _c_o_m_m_a_n_d is the command that can be used for opening the folders
   whose names match _r_e_g_e_x_p.

   The _c_o_m_m_a_n_d string is the printf-like format string, and it should
   accept two parameters: %f, which is replaced with the (compressed)
   folder name, and %t which is replaced with the name of the temporary
   folder to which to write.

   %f and %t can be repeated any number of times in the command string,
   and all of the entries are replaced with the appropriate folder name.
   In addition, %% is replaced by %, as in printf, and any other
   %anything is left as is.

   The _c_o_m_m_a_n_d should _n_o_t remove the original compressed file. The
   _c_o_m_m_a_n_d should return non-zero exit status if it fails, so mutt knows
   something's wrong.

   Example:

open-hook \\.gz$ "gzip -cd %f > %t"

   If the _c_o_m_m_a_n_d is empty, this operation is disabled for this file
   type.

19.2. Write a compressed mailbox

   Usage: cclloossee--hhooookk_r_e_g_e_x_p"_c_o_m_m_a_n_d"

   This is used to close the folder that was open with the ooppeenn--hhooookk
   command after some changes were made to it.

   The _c_o_m_m_a_n_d string is the command that can be used for closing the
   folders whose names match _r_e_g_e_x_p. It has the same format as in the
   ooppeenn--hhooookk command. Temporary folder in this case is the folder
   previously produced by the ooppeenn--hhooookk command.

   The _c_o_m_m_a_n_d should _n_o_t remove the decompressed file. The _c_o_m_m_a_n_d
   should return non-zero exit status if it fails, so mutt knows
   something's wrong.

   Example:

close-hook \\.gz$ "gzip -c %t > %f"

   If the _c_o_m_m_a_n_d is empty, this operation is disabled for this file
   type, and the file can only be open in the readonly mode.

   cclloossee--hhooookk is not called when you exit from the folder if the folder
   was not changed.

19.3. Append a message to a compressed mailbox

   Usage: aappppeenndd--hhooookk_r_e_g_e_x_p"_c_o_m_m_a_n_d"

   This command is used for saving to an existing compressed folder. The
   _c_o_m_m_a_n_d is the command that can be used for appending to the folders
   whose names match _r_e_g_e_x_p. It has the same format as in the ooppeenn--hhooookk
   command. The temporary folder in this case contains the messages that
   are beingappended.

   The _c_o_m_m_a_n_d should _n_o_t remove the decompressed file. The _c_o_m_m_a_n_d
   should return non-zero exit status if it fails, so mutt knows
   something's wrong.

   Example:

append-hook \\.gz$ "gzip -c %t >> %f"

   When aappppeenndd--hhooookk is used, the folder is not opened, which saves time,
   but this means that we can not find out what the folder type is. Thus
   the default ($$mmbbooxx__ttyyppee )type is always supposed (i.e. this is the
   format used for the temporary folder).

   If the file does not exist when you save to it, cclloossee--hhooookk is called,
   and not aappppeenndd--hhooookk. aappppeenndd--hhooookk is only for appending to existing
   folders.

   If the _c_o_m_m_a_n_d is empty, this operation is disabled for this file
   type. In this case, the folder will be open and closed again (using
   ooppeenn--hhooookk and cclloossee--hhooookk respectively) each time you will add to it.

19.4. Encrypted folders

   The compressed folders support can also be used to handle encrypted
   folders. If you want to encrypt a folder with PGP, you may want to
   usethe following hooks:

open-hook  \\.pgp$ "pgp -f < %f > %t"
close-hook \\.pgp$ "pgp -fe YourPgpUserIdOrKeyId < %t > %f"

   Please note, that PGP does not support appending to an encrypted
   folder, so there is no aappppeenndd--hhooookk defined.

   _N_o_t_e_: the folder is temporary stored decrypted in the /tmp directory,
   where it can be read by your system administrator. So thinkabout the
   security aspects of this.

Chapter 5. Mutt-ng's MIME Support

   _T_a_b_l_e_ _o_f_ _C_o_n_t_e_n_t_s

   11..  UUssiinngg  MMIIMMEE  iinn  MMuutttt

        11..11..  VViieewwiinngg  MMIIMMEE  mmeessssaaggeess  iinn  tthhee  ppaaggeerr
        11..22..  TThhee  AAttttaacchhmmeenntt  MMeennuu
        11..33..  TThhee  CCoommppoossee  MMeennuu

   22..  MMIIMMEE  TTyyppee  ccoonnffiigguurraattiioonn  wwiitthh  mmiimmee..ttyyppeess
   33..  MMIIMMEE  VViieewweerr  ccoonnffiigguurraattiioonn  wwiitthh  mmaaiillccaapp

        33..11..  TThhee  BBaassiiccss  ooff  tthhee  mmaaiillccaapp  ffiillee
        33..22..  SSeeccuurree  uussee  ooff  mmaaiillccaapp
        33..33..  AAddvvaanncceedd  mmaaiillccaapp  UUssaaggee
        33..44..  EExxaammppllee  mmaaiillccaapp  ffiilleess

   44..  MMIIMMEE  AAuuttoovviieeww
   55..  MMIIMMEE  MMuullttiippaarrtt//AAlltteerrnnaattiivvee
   66..  AAttttaacchhmmeenntt  SSeeaarrcchhiinngg  aanndd  CCoouunnttiinngg
   77..  MMIIMMEE  LLooookkuupp

   Quite a bit of effort has been made to make Mutt-ng the premier
   text-mode MIME MUA. Every effort has been made to provide the
   functionality that the discerning MIME user requires, and the
   conformance to the standards wherever possible. When configuring
   Mutt-ng for MIME, there are two extratypes of configuration files
   which Mutt-ng uses. One is the mime.types file, which contains the
   mapping of file extensions to IANA MIME types. The other is the
   mailcap file, which specifies the external commands to use for
   handling specific MIME types.

1. Using MIME in Mutt

   There are three areas/menus in Mutt-ng which deal with MIME, they are
   the pager (while viewing a message), the attachment menu and the
   compose menu.

1.1. Viewing MIME messages in the pager

   When you select a message from the index and view it in the pager,
   Mutt decodes the message to a text representation. Mutt-ng internally
   supports a number of MIME types, including text/plain, text/enriched,
   message/rfc822, and message/news .In addition, the export controlled
   version of Mutt-ng recognizes a variety of PGP MIME types, including
   PGP/MIME and application/pgp.

   Mutt-ng will denote attachments with a couple lines describing them.
   These lines are of the form:
[-- Attachment #1: Description --]
[-- Type: text/plain, Encoding: 7bit, Size: 10000 --]

   Where the Description is the description or filename given for the
   attachment, and the Encoding is one of
   7bit/8bit/quoted-printable/base64/binary.

   If Mutt-ng cannot deal with a MIME type, it will display a message
   like:
[-- image/gif is unsupported (use 'v' to view this part) --]

1.2. The Attachment Menu

   The default binding for view-attachments is `v', which displays the
   attachment menu for a message. The attachment menu displays a list
   ofthe attachments in a message. From the attachment menu, you can
   save, print, pipe, delete, and view attachments. You can apply these
   operations to a group of attachments at once, by tagging the
   attachments and by using the ``tag-prefix'' operator. You can also
   reply to the current message from this menu, and only the current
   attachment (or the attachments tagged) will be quoted in your reply.
   You can view attachments as text, or view them using the mailcap
   viewer definition.

   Finally, you can apply the usual message-related functions (like
   <resend-message>, and the reply and forward functions) to attachments
   of type message/rfc822.

   See the help on the attachment menu for more information.

1.3. The Compose Menu

   The compose menu is the menu you see before you send a message. It
   allows you to edit the recipient list, the subject, and other aspects
   of your message. It also contains a list of the attachments of your
   message, including the main body. From this menu, you can print, copy,
   filter, pipe, edit, compose, review, and rename an attachment or a
   list of tagged attachments. You can also modifying the attachment
   information, notably the type, encoding and description.

   Attachments appear as follows:
1 [text/plain, 7bit, 1K]             /tmp/mutt-euler-8082-0 <no description>
2 [applica/x-gunzip, base64, 422K]   ~/src/mutt-0.85.tar.gz <no description>

   The '-' denotes that Mutt-ng will delete the file after sending (or
   postponing, or canceling) the message. It can be toggled with the
   toggle-unlink command (default: u). The next field is the MIME
   content-type, and can be changed with the edit-type command (default:
   ^T). The next field is the encoding for the attachment, which allows a
   binary message to be encoded for transmission on 7bit links. It can be
   changed with the edit-encoding command (default: ^E). The next field
   is the size of the attachment, rounded to kilobytes or megabytes. The
   next field is the filename, which can be changed with the rename-file
   command (default: R). The final field is the description of the
   attachment, and can be changed with the edit-description command
   (default: d).

2.  MIME Type configuration with mime.types

   When you add an attachment to your mail message, Mutt-ng searches your
   personal mime.types file within $HOME and then the system mime.types
   file at /usr/local/share/mutt/mime.types or /etc/mime.types

   The mime.types file consist of lines containing a MIME type and a
   space separated list of extensions. For example:
application/postscript          ps eps
application/pgp                 pgp
audio/x-aiff                    aif aifc aiff

   A sample mime.types file comes with the Mutt-ng distribution, and
   should contain most of the MIME types you are likely to use.

   If Mutt-ng can not determine the mime type by the extension of the
   file you attach, it will look at the file. If the file is free of
   binary information, Mutt-ng will assume that the file is plain text,
   and mark it as text/plain. If the file contains binary information,
   then Mutt-ng will mark it as application/octet-stream. You can change
   the MIME type that Mutt-ng assigns to an attachment by using the
   edit-type command from the compose menu (default: ^T). The MIME type
   is actually a major mime type followed by the sub-type, separated by a
   '/'. 6 major types: application, text, image, video, audio, and model
   have been approved after various internet discussions. Mutt-ng
   recognises all of these if the appropriate entry is found in the
   mime.types file. It also recognises other major mime types, such as
   the chemical type that is widely used in the molecular modelling
   community to pass molecular data in various forms to various molecular
   viewers. Non-recognised mime types should only be used if the
   recipient of the message is likely to be expecting such attachments.

3.  MIME Viewer configuration with mailcap

   Mutt-ng supports RRffCC  11552244 MIME Configuration, in particular the Unix
   specific format specified in Appendix A of the RfC. This file format
   is commonly referred to as the mailcap format. Many MIME compliant
   programs utilize the mailcap format, allowing you to specify handling
   for all MIME types in one place for all programs. Programs known to
   use this format include Netscape, XMosaic, lynx and metamail.

   In order to handle various MIME types that Mutt-ng can not handle
   internally, Mutt-ng parses a series of external configuration files to
   find an external handler. The default search string for these files is
   a colon delimited list set to
${HOME}/.mailcap:/usr/local/share/mutt/mailcap:/etc/mailcap:/etc/mailcap:/usr/e
tc/mailcap:/usr/local/etc/mailcap

   where $HOME is your home directory.

   In particular, the metamail distribution will install a mailcap file,
   usually as /usr/local/etc/mailcap, which contains some baseline
   entries.

3.1. The Basics of the mailcap file

   A mailcap file consists of a series of lines which are comments,
   blank, or definitions.

   A comment line consists of a # character followed by anything you
   want.

   A blank line is blank.

   A definition line consists of a content type, a view command, and any
   number of optional fields. Each field of a definition line is
   dividedby a semicolon ';' character.

   The content type is specified in the MIME standard type/subtype
   method. For example, text/plain, text/html, image/gif, etc. In
   addition, the mailcap format includes two formats for wildcards, one
   using the special '*' subtype, the other is the implicit wild, where
   you only include the major type. For example, image/* ,or video, will
   match all image types and video types, respectively.

   The view command is a Unix command for viewing the type specified.
   There are two different types of commands supported. The default is to
   send the body of the MIME message to the command on stdin. You can
   change this behavior by using %s as a parameter to your view command.
   This will cause Mutt-ng to save the body of the MIME message to a
   temporary file, and then call the view command with the %s replaced by
   the name of the temporary file. In both cases, Mutt-ng will turn over
   the terminal to the view program until the program quits, at which
   time Mutt will remove the temporary file if it exists.

   So, in the simplest form, you can send a text/plain message to the
   external pager more on stdin:
text/plain; more

   Or, you could send the message as a file:
text/plain; more %s

   Perhaps you would like to use lynx to interactively view a text/html
   message:
text/html; lynx %s

   In this case, lynx does not support viewing a file from stdin, so you
   must use the %s syntax. _N_o_t_e_:_S_o_m_e_ _o_l_d_e_r_ _v_e_r_s_i_o_n_s_ _o_f_ _l_y_n_x_ _c_o_n_t_a_i_n_ _a_ _b_u_g
   _w_h_e_r_e_ _t_h_e_y_ _w_i_l_l_ _c_h_e_c_k_ _t_h_e_ _m_a_i_l_c_a_p_ _f_i_l_e_ _f_o_r_ _a_ _v_i_e_w_e_r_ _f_o_r_ _t_e_x_t_/_h_t_m_l_.
   _T_h_e_y_ _w_i_l_l_ _f_i_n_d_ _t_h_e_ _l_i_n_e_ _w_h_i_c_h_ _c_a_l_l_s_ _l_y_n_x_,_ _a_n_d_ _r_u_n_ _i_t_._ _T_h_i_s_ _c_a_u_s_e_s_ _l_y_n_x
   _t_o_ _c_o_n_t_i_n_u_o_u_s_l_y_ _s_p_a_w_n_ _i_t_s_e_l_f_ _t_o_ _v_i_e_w_ _t_h_e_ _o_b_j_e_c_t_.

   On the other hand, maybe you don't want to use lynx interactively,
   youjust want to have it convert the text/html to text/plain, then you
   can use:
text/html; lynx -dump %s | more

   Perhaps you wish to use lynx to view text/html files, and a pager on
   all other text formats, then you would use the following:
text/html; lynx %s
text/*; more

   This is the simplest form of a mailcap file.

3.2. Secure use of mailcap

   The interpretation of shell meta-characters embedded in MIME
   parameters can lead to security problems in general. Mutt-ng tries to
   quote parameters in expansion of %s syntaxes properly, and avoids
   risky characters by substituting them, see the $$mmaaiillccaapp__ssaanniittiizzee
   variable.

   Although mutt's procedures to invoke programs with mailcap seem to be
   safe, there are other applications parsing mailcap, maybe taking less
   care of it. Therefore you should pay attention to the following rules:

   _K_e_e_p_ _t_h_e_ _%_-_e_x_p_a_n_d_o_s_ _a_w_a_y_ _f_r_o_m_ _s_h_e_l_l_ _q_u_o_t_i_n_g_. Don't quote them with
   single or double quotes. Mutt-ng does this for you, the right way, as
   should any other program which interprets mailcap. Don't put them into
   backtick expansions. Be highly careful with eval statements, and avoid
   them if possible at all. Trying to fix broken behaviour with quotes
   introduces new leaks - there is no alternative to correct quoting in
   the first place.

   If you have to use the %-expandos' values in context where you need
   quoting or backtick expansions, put that value into a shell variable
   and reference the shell variable where necessary, as in the following
   example (using $charset inside the backtick expansion is safe, since
   it is not itself subject to any further expansion):

text/test-mailcap-bug; cat %s; copiousoutput; test=charset=%{charset} \
&& test "`echo $charset | tr '[A-Z]' '[a-z]'`" != iso-8859-1

3.3. Advanced mailcap Usage

3.3.1. Optional Fields

   In addition to the required content-type and view command fields, you
   can add semi-colon ';' separated fields to set flags and other
   options. Mutt-ng recognizes the following optional fields:

   copiousoutput
          This flag tells Mutt-ng that the command passes possibly large
          amounts of text on stdout. This causes Mutt-ng to invoke a
          pager (either the internal pager or the external pager defined
          by the pager variable) on the output of the view command.
          Without this flag, Mutt-ng assumes that the command is
          interactive. One could use this to replace the pipe to more in
          the lynx -dump example in the Basic section:

text/html; lynx -dump %s ; copiousoutput

          This will cause lynx to format the text/html output as
          text/plain and Mutt-ng will use your standard pager to display
          the results.

   needsterminal
          Mutt-ng uses this flag when viewing attachments with aauuttoo__vviieeww,
          in order to decide whether it should honor the setting of the
          $$wwaaiitt__kkeeyy variable or not. When an attachment is viewed using
          an interactive program, and the corresponding mailcap entry has
          a _n_e_e_d_s_t_e_r_m_i_n_a_l flag, Mutt-ng will use $$wwaaiitt__kkeeyy and the exit
          statusof the program to decide if it will ask you to press a
          key after the external program has exited. In all other
          situations it will not prompt you for a key.

   compose=<command>
          This flag specifies the command to use to create a new
          attachment of a specific MIME type. Mutt-ng supports this from
          the compose menu.

   composetyped=<command>
          This flag specifies the command to use to create a new
          attachment of a specific MIME type. This command differs from
          the compose command in that mutt will expect standard MIME
          headers on the data. This can be used to specify parameters,
          filename, description, etc. for a new attachment. Mutt-ng
          supports this from the compose menu.

   print=<command>
          This flag specifies the command to use to print a specific MIME
          type. Mutt-ng supports this from the attachment and compose
          menus.

   edit=<command>
          This flag specifies the command to use to edit a specific MIME
          type. Mutt-ng supports this from the compose menu, and also
          uses it to compose new attachments. Mutt-ng will default to the
          defined editor for text attachments.

   nametemplate=<template>
          This field specifies the format for the file denoted by %s in
          the command fields. Certain programs will require a certain
          file extension, for instance, to correctly view a file. For
          instance, lynx will only interpret a file as text/html if the
          file ends in .html. So, you would specify lynx as a text/html
          viewer with a line in the mailcap file like:

text/html; lynx %s; nametemplate=%s.html

   test=<command>
          This field specifies a command to run to test whether this
          mailcap entry should be used. The command is defined with the
          command expansion rules defined in the next section. If the
          command returns 0, then the test passed, and Mutt-ng uses this
          entry. If the command returns non-zero, then the test failed,
          and Mutt-ng continues searching for the right entry. _N_o_t_e_:_t_h_e
          _c_o_n_t_e_n_t_-_t_y_p_e_ _m_u_s_t_ _m_a_t_c_h_ _b_e_f_o_r_e_ _M_u_t_t_-_n_g_ _p_e_r_f_o_r_m_s_ _t_h_e_ _t_e_s_t_. For
          example:

text/html; netscape -remote 'openURL(%s)' ; test=RunningX
text/html; lynx %s

          In this example, Mutt-ng will run the program RunningX which
          will return 0 if the X Window manager is running, and non-zero
          if it isn't. If RunningX returns 0, then Mutt-ng will call
          netscape to display the text/html object. If RunningX doesn't
          return 0, then Mutt-ng will go on to the next entry and use
          lynx to display the text/html object.

3.3.2. Search Order

   When searching for an entry in the mailcap file, Mutt-ng will search
   for the most useful entry for its purpose. For instance, if you are
   attempting to print an image/gif, and you have the following entries
   in your mailcap file, Mutt-ng will search for an entry with the print
   command:
image/*;        xv %s
image/gif;      ; print= anytopnm %s | pnmtops | lpr; \
nametemplate=%s.gif

   Mutt-ng will skip the image/* entry and use the image/gif entry with
   the print command.

   In addition, you can use this with aauuttoo__vviieeww to denote two commands
   for viewing an attachment, one to be viewed automatically, the other
   to be viewed interactively from the attachment menu. In addition, you
   can then use the test feature to determine which viewer to use
   interactively depending on your environment.
text/html;      netscape -remote 'openURL(%s)' ; test=RunningX
text/html;      lynx %s; nametemplate=%s.html
text/html;      lynx -dump %s; nametemplate=%s.html; copiousoutput

   For aauuttoo__vviieeww, Mutt-ng will choose the third entry because of the
   copiousoutput tag. For interactive viewing, Mutt will run the program
   RunningX to determine if it should use the first entry. If the program
   returns non-zero, Mutt-ng will use the second entry for interactive
   viewing.

3.3.3. Command Expansion

   The various commands defined in the mailcap files are passed to the
   /bin/sh shell using the system() function. Before the command is
   passed to /bin/sh -c, it is parsed to expand various special
   parameters with information from Mutt-ng. The keywords Mutt-ng expands
   are:

   %s
          As seen in the basic mailcap section, this variable is expanded
          to a filename specified by the calling program. This file
          contains the body of the message to view/print/edit or where
          the composing program should place the results of composition.
          In addition, the use of this keyword causes Mutt-ng to not pass
          the body of the message to the view/print/edit program on
          stdin.

   %t
          Mutt-ng will expand %t to the text representation of the
          content type of the message in the same form as the first
          parameter of the mailcap definition line, ie text/html or
          image/gif.

   %{<parameter>}
          Mutt-ng will expand this to the value of the specified
          parameter from the Content-Type: line of the mail message. For
          instance, if Your mail message contains:

Content-Type: text/plain; charset=iso-8859-1

          then Mutt-ng will expand %{charset} to iso-8859-1. The default
          metamail mailcap file uses this feature to test the charset to
          spawn an xterm using the right charset to view the message.

   \%
          This will be replaced by a %

   Mutt-ng does not currently support the %F and %n keywords specified in
   RRffCC  11552244. The main purpose of these parameters is for multipart
   messages, which is handled internally by Mutt-ng.

3.4. Example mailcap files

   This mailcap file is fairly simple and standard:
>
# I'm always running X :)
video/*;        xanim %s > /dev/null
image/*;        xv %s > /dev/null

# I'm always running netscape (if my computer had more memory, maybe)
text/html;      netscape -remote 'openURL(%s)'

   This mailcap file shows quite a number of examples:

# Use xanim to view all videos   Xanim produces a header on startup,
# send that to /dev/null so I don't see it
video/*;        xanim %s > /dev/null

# Send html to a running netscape by remote
text/html;      netscape -remote 'openURL(%s)'; test=RunningNetscape
# If I'm not running netscape but I am running X, start netscape on the
# object
text/html;      netscape %s; test=RunningX

# Else use lynx to view it as text
text/html;      lynx %s

# This version would convert the text/html to text/plain
text/html;      lynx -dump %s; copiousoutput

# I use enscript to print text in two columns to a page
text/*;         more %s; print=enscript -2Gr %s

# Netscape adds a flag to tell itself to view jpegs internally
image/jpeg;xv %s; x-mozilla-flags=internal

# Use xv to view images if I'm running X
# In addition, this uses the \ to extend the line and set my editor
# for images
image/*;xv %s; test=RunningX; edit=xpaint %s

# Convert images to text using the netpbm tools
image/*;  (anytopnm %s | pnmscale -xysize 80 46 | ppmtopgm | \
pgmtopbm | pbmtoascii -1x2 ) 2>&1 ; copiousoutput

# Send excel spreadsheets to my NT box
application/ms-excel; open.pl %s

4. MIME Autoview

   Usage: auto_view_m_i_m_e_-_t_y_p_e_ _[_m_i_m_e_-_t_y_p_e_ _._._._]

   Usage: unauto_view_m_i_m_e_-_t_y_p_e_ _[_m_i_m_e_-_t_y_p_e_ _._._._]

   In addition to explicitly telling Mutt-ng to view an attachment with
   theMIME viewer defined in the mailcap file, Mutt-ng has support for
   automatically viewing MIME attachments while in the pager.

   To work, you must define a viewer in the mailcap file which uses the
   copiousoutput option to denote that it is non-interactive. Usually,
   you also use the entry to convert the attachment to a text
   representation which you can view in the pager.

   You then use the auto_view muttrc command to list the content-types
   that you wish to view automatically.

   For instance, if you set auto_view to:
auto_view text/html application/x-gunzip application/postscript
image/gif application/x-tar-gz

   Mutt-ng could use the following mailcap entries to automatically view
   attachments of these types.
text/html;      lynx -dump %s; copiousoutput; nametemplate=%s.html
image/*;        anytopnm %s | pnmscale -xsize 80 -ysize 50 | ppmtopgm | pgmtopb
m | pbmtoascii ; copiousoutput
application/x-gunzip;   gzcat; copiousoutput
application/x-tar-gz; gunzip -c %s | tar -tf - ; copiousoutput
application/postscript; ps2ascii %s; copiousoutput

   ``unauto_view'' can be used to remove previous entries from the
   autoview list. This can be used with mmeessssaaggee--hhooookk to autoview messages
   based on size, etc. ``unauto_view *'' will remove all previous
   entries.

5. MIME Multipart/Alternative

   Usage: alternative_order_m_i_m_e_-_t_y_p_e_ _[_m_i_m_e_-_t_y_p_e_ _._._._]

   Usage: unalternative_order_m_i_m_e_-_t_y_p_e_ _[_m_i_m_e_-_t_y_p_e_ _._._._]

   Mutt-ng has some heuristics for determining which attachment of a
   multipart/alternative type to display. First, mutt will check the
   alternative_order list to determine if one of the available typesis
   preferred. The alternative_order list consists of a number of MIME
   types in order, including support for implicit and explicit wildcards,
   for example:
alternative_order text/enriched text/plain text
application/postscript image/*

   Next, mutt will check if any of the types have a defined aauuttoo__vviieeww,
   and use that. Failing that, Mutt-ng will look for any text type. As a
   last attempt, mutt willlook for any type it knows how to handle.

   To remove a MIME type from the alternative_order list, use the
   unalternative_order command.

6. Attachment Searching and Counting

   If you ever lose track of attachments in your mailboxes, Mutt's
   attachment-counting and -searching support might be for you. You can
   make your message index display the number of qualifying attachments
   in each message, or search for messages by attachment count. You also
   can configure what kinds of attachments qualify for this feature with
   the attachments and unattachments commands.

   The syntax is:

   Usage: attachments_(_ _{_+_|_-_}_d_i_s_p_o_s_i_t_i_o_n_ _m_i_m_e_-_t_y_p_e_ _|_ _?_ _)

   Usage: unattachments_{_+_|_-_}_d_i_s_p_o_s_i_t_i_o_n_ _m_i_m_e_-_t_y_p_e

   Disposition is the attachment's Content-disposition type -- either
   "inline" or "attachment". You can abbreviate this to I or A.

   Disposition is prefixed by either a + symbolor a - symbol. If it's a
   +, you're saying that you want to allow this disposition and MIME type
   to qualify. If it's a -, you're saying that this disposition and MIME
   type is an exception to previous + rules. There are examples below of
   how this is useful.

   Mime-type is, unsurprisingly, the MIME type of the attachment you want
   to affect. A MIME type is always of the format "major/minor", where
   "major" describes the broad category of document you're looking at,
   and "minor" describes the specific type within that category. The
   major part of mim-type must be literal text (or the special token
   "*"), but the minor part may be a regular expression. (Therefore,
   "*/.*" matches any MIME type.)

   The MIME types you give to the attachments directive are a kind of
   pattern. When you use the attachments directive, the patterns you
   specify are added to a list. When you use unattachments, the pattern
   is removed from the list. The patterns are not expanded and matched to
   specific MIME types at this time -- they're just text in a list.
   They're only matched when actually evaluating a message.

   Some examples might help to illustrate. The examples that are not
   commented out define the default configuration of the lists.
## Removing a pattern from a list removes that pattern literally. It
## does not remove any type matching the pattern.
##
## attachments +A */.*
## attachments +A image/jpeg
## unattachments +A */.*
##
## This leaves "attached" image/jpeg files on the allowed attachments
## list. It does not remove all items, as you might expect, because the
## second */.* is not a matching expression at this time.
##
## Remember: "unattachments" only undoes what "attachments" has done!
## It does not trigger any matching on actual messages.


## Qualify any MIME part with an "attachment" disposition, EXCEPT for
## text/x-vcard and application/pgp parts. (PGP parts are already known
## to mutt, and can be searched for with ~g, ~G, and ~k.)
##
## I've added x-pkcs7 to this, since it functions (for S/MIME)
## analogously to PGP signature attachments. S/MIME isn't supported
## in a stock mutt build, but we can still treat it specially here.
##
attachments +A */.*
attachments -A text/x-vcard application/pgp.*
attachments -A application/x-pkcs7-.*

## Discount all MIME parts with an "inline" disposition, unless they're
## text/plain. (Why inline a text/plain part unless it's external to the
## message flow?)
##
attachments +I text/plain

## These two lines make Mutt qualify MIME containers. (So, for example,
## a message/rfc822 forward will count as an attachment.) The first
## line is unnecessary if you already have "attach-allow */.*", of
## course. These are off by default! The MIME elements contained
## within a message/* or multipart/* are still examined, even if the
## containers themseves don't qualify.
##
#attachments +A message/.* multipart/.*
#attachments +I message/.* multipart/.*

## You probably don't really care to know about deleted attachments.
attachments -A message/external-body
attachments -I message/external-body

   "attachments ?" will list your current settings in Muttrc format, so
   that it can be pasted elsewhere.

   Please note that counting attachments may require lots of data be
   loaded. This may cause noticeable slowdowns over network links
   depending on the connection speed and message sizes. To fine-tune the
   behavior on a per-folder or other basis, the $$ccoouunntt__aattttaacchhmmeennttss
   variable may be used.

7. MIME Lookup

   Usage: mime_lookup_m_i_m_e_-_t_y_p_e_ _[_m_i_m_e_-_t_y_p_e_ _._._._]

   Usage: unmime_lookup_m_i_m_e_-_t_y_p_e_ _[_m_i_m_e_-_t_y_p_e_ _._._._]

   Mutt-ng's mime_lookup list specifies a list of mime-types that should
   not be treated according to their mailcap entry. This option is
   designed todeal with binary types such as application/octet-stream.
   When an attachment's mime-type is listed in mime_lookup, then the
   extension of the filename will be compared to the list of extensions
   in the mime.types file. The mime-type associated with this extension
   will then be used to process the attachment according to the rules in
   the mailcap file and according to any other configuration options
   (such as auto_view) specified. Common usage would be:
mime_lookup application/octet-stream application/X-Lotus-Manuscript

   In addition, the unmime_lookup command may be used to disable this
   feature for any particular mime-type if it had been set, for example,
   in a global muttrc.

Chapter 6. Security Considerations

   _T_a_b_l_e_ _o_f_ _C_o_n_t_e_n_t_s

   11..  PPaasssswwoorrddss
   22..  TTeemmppoorraarryy  FFiilleess
   33..  IInnffoorrmmaattiioonn  LLeeaakkss

        33..11..  MMeessssaaggee--IIDD::  hheeaaddeerrss
        33..22..  mmaaiillttoo::--ssttyyllee  lliinnkkss

   44..  EExxtteerrnnaall  aapppplliiccaattiioonnss

        44..11..  mmaaiillccaapp
        44..22..  OOtthheerr

   First of all, mutt-ng contains no security holes included by intention
   but may contain unknown security holes. As a consequence, please run
   mutt-ng only with as few permissions as possible.

   Please do not run mutt-ng as the super user.

   When configuring mutt-ng, there're some points to note about secure
   setups.

   In practice, mutt-ng can be easily made as vulnerable as even the most
   insecure mail user agents (in their default configuration) just by
   changing mutt-ng's configuration files: it then can execute arbitrary
   programs and scripts attached to messages, send out private data on
   its own, etc. Although this is not believed to the common type of
   setup, please read this chapter carefully.

1. Passwords

   Although mutt-ng can be told the various passwords for accounts,
   please never store passwords in configuration files. Besides the fact
   that the system's operator can always read them, you could forget to
   replace the actual password with asterisks when reporting a bug or
   asking for help via, for example, a mailing list so that your mail
   including your password could be archived by internet search engines,
   etc. Please never store passwords on disk.

2. Temporary Files

   Mutt-ng uses many temporary files for viewing messages, verifying
   digital signatures, etc. The $$uummaasskk variable can be used to change the
   default permissions of these files. Please only change it if you
   really know what you are doing. Also, a different location for these
   files may be desired which can be changed via the $$ttmmppddiirr variable.

3. Information Leaks

3.1. Message-ID: headers

   In the default configuration, mutt-ng will leak some information to
   the outside world when sending messages: the generation of Message-ID:
   headers includes a step counter which is increased (and rotated) with
   every message sent. If you'd like to hide this information probably
   telling others how many mail you sent in which time, you at least need
   to remove the %P expando from the default setting of the $$mmssggiidd__ffoorrmmaatt
   variable. Please make sure that you really know how local parts of
   these Message-ID: headers are composed.

3.2. mailto:-style links

   As mutt-ng be can be set up to be the mail client to handle mailto:
   style links in websites, there're security considerations, too. To
   keep the old behavior by default, mutt-ng will be strict in
   interpreting them which means that arbitrary header fields can be
   embedded in these links which could override existing header fields or
   attach arbitrary files. This may be problematic if the $$eeddiitt__hheeaaddeerrss
   variable is _u_n_s_e_t, i.e. the user doesn't want to see header fields
   while editing the message.

   For example, following a link like

mailto:joe@host?Attach=~/.gnupg/secring.gpg

   will send out the user's private gnupg keyring to joe@host if the user
   doesn't follow the information on screen carefully enough.

   When _u_n_s_e_t_t_i_n_g the $$ssttrriicctt__mmaaiillttoo variable, mutt-ng will

     * be less strict when interpreting these links by prepending a
       X-Mailto- string to all header fields embedded in such a link _a_n_d
     * turn on the $$eeddiitt__hheeaaddeerrss variable by force to let the user see
       all the headers (because they still may leak information.)

4. External applications

   Mutt-ng in many places has to rely on external applications or for
   convenience supports mechanisms involving external applications.

4.1. mailcap

   One of these is the mailcap mechanism as defined by RRffCC  11552244. Mutt-ng
   can be set up to _a_u_t_o_m_a_t_i_c_a_l_l_y execute any given utility as listed in
   one of the mailcap files (see the $$mmaaiillccaapp__ppaatthh variable for details.)

   These utilities may have a variety of security vulnerabilities,
   including overwriting of arbitrary files, information leaks or other
   exploitable bugs. These vulnerabilities may go unnoticed by the user,
   especially when they are called automatically (and without interactive
   prompting) from the mailcap file(s). When using mutt-ng's autoview
   mechanism in combination with mailcap files, please be sure to...

     * manually select trustworth applications with a reasonable calling
       sequence
     * periodically check the contents of mailcap files, especially after
       software installations or upgrades
     * keep the software packages referenced in the mailcap file up to
       date
     * leave the $$mmaaiillccaapp__ssaanniittiizzee variable in its default state to
       restrict mailcap expandos to a safe set of characters

4.2. Other

   Besides the mailcap mechanism, mutt-ng uses a number of other external
   utilities for operation.

   The same security considerations apply for these as for tools involved
   via mailcap (for example, mutt-ng is vulnerable to Denial of Service
   Attacks with compressed folders support if the uncompressed mailbox is
   too large for the disk it is saved to.)

   As already noted, most of these problems are not built in but caused
   by wrong configuration, so please check your configuration.

Chapter 7. Reference

   _T_a_b_l_e_ _o_f_ _C_o_n_t_e_n_t_s

   11..  CCoommmmaanndd  lliinnee  ooppttiioonnss
   22..  PPaatttteerrnnss
   33..  CCoonnffiigguurraattiioonn  CCoommmmaannddss
   44..  CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   55..  FFuunnccttiioonnss

        55..11..  ggeenneerriicc
        55..22..  iinnddeexx
        55..33..  ppaaggeerr
        55..44..  aalliiaass
        55..55..  qquueerryy
        55..66..  aattttaacchh
        55..77..  ccoommppoossee
        55..88..  ppoossttppoonnee
        55..99..  bbrroowwsseerr
        55..1100..  ppggpp
        55..1111..  eeddiittoorr
        55..1122..  ssiiddeebbaarr

1. Command line options

   Running mutt with no arguments will make Mutt-ng attempt to read your
   spool mailbox. However, it is possible to read other mailboxes and to
   send messages from the command line as well.

   _T_a_b_l_e_ _7_._1_._ _R_e_f_e_r_e_n_c_e_:_ _C_o_m_m_a_n_d_ _L_i_n_e_ _O_p_t_i_o_n_s
   Option Description
   -A expand an alias
   -a attach a file to a message
   -b specify a blind carbon-copy (BCC) address
   -c specify a carbon-copy (Cc) address
   -e specify a config command to be run after initialization files are
   read
   -f specify a mailbox to load
   -F specify an alternate file to read initialization commands
   -h print help on command line options
   -H specify a draft file from which to read a header and body
   -i specify a file to include in a message composition
   -m specify a default mailbox type
   -n do not read the system Muttngrc
   -p recall a postponed message
   -Q query a configuration variable
   -R open mailbox in read-only mode
   -s specify a subject (enclose in quotes if it contains spaces)
   -t dump the value of all variables to stdout
   -T dump the value of all changed variables to stdout
   -v show version number and compile-time definitions
   -x simulate the mailx(1) compose mode
   -y show a menu containing the files specified by the mailboxes command
   -z exit immediately if there are no messages in the mailbox
   -Z open the first folder with new message,exit immediately if none

   To read messages in a mailbox

   mutt ] -nz ] ] -F _m_u_t_t_r_c ] ] -m _t_y_p_e ] ] -f _m_a_i_l_b_o_x ]

   To compose a new message

   mutt ] -n ] ] -F _m_u_t_t_r_c ] ] -a _f_i_l_e ] ] -c _a_d_d_r_e_s_s ] ] -i _f_i_l_e_n_a_m_e ] ]
   -s _s_u_b_j_e_c_t ] _a_d_d_r_e_s_s ] _a_d_d_r_e_s_s ... ]

   Mutt-ng also supports a ``batch'' mode to send prepared messages.
   Simply redirect input from the file you wish to send. For example,

   mutt -s "data set for run #2" professor@bigschool.edu < ~/run2.dat

   This command will send a message to ``professor@bigschool.edu'' with a
   subject of ``data set for run #2''. In the body of the message will be
   the contents of the file ``~/run2.dat''.

2. Patterns

   _T_a_b_l_e_ _7_._2_._ _R_e_f_e_r_e_n_c_e_:_ _P_a_t_t_e_r_n_s
   Pattern Modifier Argument Description
   ~A/=A all messages
   ~b/=b EXPR messages which contain EXPR in the message body
   ~B/=B EXPR messages which contain EXPR in the whole message
   ~c/=c EXPR messages carbon-copied to EXPR
   ~C/=C EXPR message is either to: or cc: EXPR
   ~D/=D deleted messages
   ~d/=d [MIN]-[MAX] messages with ``date-sent'' in a Date range
   ~E/=E expired messages
   ~e/=e EXPR message which contains EXPR in the ``Sender'' field
   ~F/=F flagged messages
   ~f/=f EXPR messages originating from EXPR
   ~g/=g cryptographically signed messages
   ~G/=G cryptographically encrypted messages
   ~H/=H EXPR messages with a spam attribute matching EXPR
   ~h/=h EXPR messages which contain EXPR in the message header
   ~k/=k message contains PGP key material
   ~i/=i EXPR message which match ID in the ``Message-ID'' field
   ~L/=L EXPR message is either originated or received by EXPR
   ~l/=l message is addressed to a known mailing list
   ~m/=m [MIN]-[MAX] message in the range MIN to MAX *)
   ~M/=M multipart messages
   ~n/=n [MIN]-[MAX] messages with a score in the range MIN to MAX *)
   ~N/=N new messages
   ~O/=O old messages
   ~p/=p message is addressed to you (consults alternates)
   ~P/=P message is from you (consults alternates)
   ~Q/=Q messages which have been replied to
   ~R/=R read messages
   ~r/=r [MIN]-[MAX] messages with ``date-received'' in a Date range
   ~S/=S superseded messages
   ~s/=s EXPR messages having EXPR in the ``Subject'' field.
   ~T/=T tagged messages
   ~t/=t EXPR messages addressed to EXPR
   ~U/=U unread messages
   ~u/=u message is addressed to a subscribed mailing list
   ~v/=v message is part of a collapsed thread.
   ~V/=V cryptographically verified messages
   ~w/=w EXPR messages which contain EXPR in the `Newsgroups' field (if
   compiled with NNTP support)
   ~x/=x EXPR messages which contain EXPR in the `References' field
   ~X/=X [MIN]-[MAX] messages with MIN to MAX attachments *)
   ~y/=y EXPR messages which contain EXPR in the `X-Label' field
   ~z/=z [MIN]-[MAX] messages with a size in the range MIN to MAX *)
   ~=/== duplicated messages (see $duplicate_threads)
   ~$/=$ unreferenced messages (requires threaded view)
   ~*/=* ``From'' contains realname and (syntactically) valid address
   (excluded are addresses matching against alternates or any alias)

   Where EXPR are rreeggeexxpp. Special attention has to be made when using
   regular expressions inside of patterns. Specifically, Mutt-ng's parser
   for these patterns will strip one level of backslash (\), which is
   normally used for quoting. If it is your intention to use a backslash
   in the regular expression, you will need to use two backslashes
   instead (\\).

   *) The forms <[MAX], >[MIN], [MIN]- and -[MAX] are allowed, too.

3. Configuration Commands

   The following are the commands understood by mutt.

     * aaccccoouunntt--hhooookk _p_a_t_t_e_r_n _c_o_m_m_a_n_d
     * aalliiaass_k_e_y_a_d_d_r_e_s_s [, _a_d_d_r_e_s_s, ... ]
     * uunnaalliiaass [ * | _k_e_y ... ]
     * aalltteerrnnaatteess_r_e_g_e_x_p [ _r_e_g_e_x_p ... ]
     * uunnaalltteerrnnaatteess [ * | _r_e_g_e_x_p ... ]
     * aalltteerrnnaattiivvee__oorrddeerr_m_i_m_e_t_y_p_e [ _m_i_m_e_t_y_p_e ... ]
     * uunnaalltteerrnnaattiivvee__oorrddeerr_m_i_m_e_t_y_p_e [ _m_i_m_e_t_y_p_e ... ]
     * aappppeenndd--hhooookk _r_e_g_e_x_p _c_o_m_m_a_n_d
     * aauuttoo__vviieeww_m_i_m_e_t_y_p_e [ _m_i_m_e_t_y_p_e ... ]
     * uunnaauuttoo__vviieeww_m_i_m_e_t_y_p_e [ _m_i_m_e_t_y_p_e ... ]
     * bbiinndd _m_a_p _k_e_y _f_u_n_c_t_i_o_n
     * cchhaarrsseett--hhooookk _a_l_i_a_s _c_h_a_r_s_e_t
     * cclloossee--hhooookk _r_e_g_e_x_p _c_o_m_m_a_n_d
     * ccoolloorr_o_b_j_e_c_t_f_o_r_e_g_r_o_u_n_d_b_a_c_k_g_r_o_u_n_d [ _r_e_g_e_x_p ]
     * uunnccoolloorr_i_n_d_e_x_p_a_t_t_e_r_n [ _p_a_t_t_e_r_n ... ]
     * eexxeecc_f_u_n_c_t_i_o_n [ _f_u_n_c_t_i_o_n ... ]
     * ffcccc--hhooookk _p_a_t_t_e_r_n _m_a_i_l_b_o_x
     * ffcccc--ssaavvee--hhooookk _p_a_t_t_e_r_n _m_a_i_l_b_o_x
     * ffoollddeerr--hhooookk _p_a_t_t_e_r_n _c_o_m_m_a_n_d
     * hhddrr__oorrddeerr_h_e_a_d_e_r [ _h_e_a_d_e_r ... ]
     * uunnhhddrr__oorrddeerr_h_e_a_d_e_r [ _h_e_a_d_e_r ... ]
     * cchhaarrsseett--hhooookk _c_h_a_r_s_e_t _l_o_c_a_l_-_c_h_a_r_s_e_t
     * iiggnnoorree_p_a_t_t_e_r_n [ _p_a_t_t_e_r_n ... ]
     * uunniiggnnoorree_p_a_t_t_e_r_n [ _p_a_t_t_e_r_n ... ]
     * lliissttss_r_e_g_e_x_p [ _r_e_g_e_x_p ... ]
     * uunnlliissttss_r_e_g_e_x_p [ _r_e_g_e_x_p ... ]
     * mmaaccrroo_m_e_n_u_k_e_y_s_e_q_u_e_n_c_e [ _d_e_s_c_r_i_p_t_i_o_n ]
     * mmaaiillbbooxxeess_f_i_l_e_n_a_m_e [ _f_i_l_e_n_a_m_e ... ]
     * mmbbooxx--hhooookk _p_a_t_t_e_r_n _m_a_i_l_b_o_x
     * mmeessssaaggee--hhooookk _p_a_t_t_e_r_n _c_o_m_m_a_n_d
     * mmiimmee__llooookkuupp_m_i_m_e_t_y_p_e [ _m_i_m_e_t_y_p_e ... ]
     * uunnmmiimmee__llooookkuupp_m_i_m_e_t_y_p_e [ _m_i_m_e_t_y_p_e ... ]
     * mmoonnoo_o_b_j_e_c_t_ _a_t_t_r_i_b_u_t_e [ _r_e_g_e_x_p ]
     * uunnmmoonnoo_i_n_d_e_x_p_a_t_t_e_r_n [ _p_a_t_t_e_r_n ... ]
     * mmyy__hhddrr _s_t_r_i_n_g
     * uunnmmyy__hhddrr_f_i_e_l_d [ _f_i_e_l_d ... ]
     * ooppeenn--hhooookk _r_e_g_e_x_p _c_o_m_m_a_n_d
     * ccrryypptt--hhooookk _p_a_t_t_e_r_n _k_e_y_-_i_d
     * ppuusshh _s_t_r_i_n_g
     * rreesseett_v_a_r_i_a_b_l_e [ _v_a_r_i_a_b_l_e ... ]
     * ssaavvee--hhooookk _r_e_g_e_x_p _f_i_l_e_n_a_m_e
     * ssccoorree _p_a_t_t_e_r_n _v_a_l_u_e
     * uunnssccoorree_p_a_t_t_e_r_n [ _p_a_t_t_e_r_n ... ]
     * sseenndd--hhooookk _r_e_g_e_x_p _c_o_m_m_a_n_d
     * rreeppllyy--hhooookk _r_e_g_e_x_p _c_o_m_m_a_n_d
     * sseett [no|inv]_v_a_r_i_a_b_l_e[ =_v_a_l_u_e ] [ _v_a_r_i_a_b_l_e ... ]
     * uunnsseett_v_a_r_i_a_b_l_e [ _v_a_r_i_a_b_l_e ... ]
     * ssoouurrccee _f_i_l_e_n_a_m_e
     * ssppaamm _p_a_t_t_e_r_n _f_o_r_m_a_t
     * nnoossppaamm _p_a_t_t_e_r_n
     * ssuubbssccrriibbee_r_e_g_e_x_p [ _r_e_g_e_x_p ... ]
     * uunnssuubbssccrriibbee_r_e_g_e_x_p [ _r_e_g_e_x_p ... ]
     * ttooggggllee_v_a_r_i_a_b_l_e [ _v_a_r_i_a_b_l_e ... ]
     * uunnhhooookk _h_o_o_k_-_t_y_p_e

4. Configuration variables

   The following list contains all variables which, in the process of
   providing more consistency, have been renamed and are partially even
   removed already. The left column contains the old synonym variables,
   the right column the full/new name:

   _T_a_b_l_e_ _7_._3_._ _R_e_f_e_r_e_n_c_e_:_ _O_b_s_o_l_e_t_e_ _V_a_r_i_a_b_l_e_s
   Old Name               New Name
   edit_hdrs              $$eeddiitt__hheeaaddeerrss
   forw_decode            $$ffoorrwwaarrdd__ddeeccooddee
   forw_format            $$ffoorrwwaarrdd__ffoorrmmaatt
   forw_quote             $$ffoorrwwaarrdd__qquuoottee
   hdr_format             $$iinnddeexx__ffoorrmmaatt
   indent_str             $$iinnddeenntt__ssttrriinngg
   mime_fwd               $$mmiimmee__ffoorrwwaarrdd
   msg_format             $$mmeessssaaggee__ffoorrmmaatt
   pgp_autosign           $$ccrryypptt__aauuttoossiiggnn
   pgp_autoencrypt        $$ccrryypptt__aauuttooeennccrryypptt
   pgp_replyencrypt       $$ccrryypptt__rreeppllyyeennccrryypptt
   pgp_replysign          $$ccrryypptt__rreeppllyyssiiggnn
   pgp_replysignencrypted $$ccrryypptt__rreeppllyyssiiggnneennccrryypptteedd
   pgp_verify_sig         $$ccrryypptt__vveerriiffyy__ssiigg
   pgp_create_traditional $$ppggpp__aauuttooiinnlliinnee
   pgp_auto_traditional   $$ppggpp__rreeppllyyiinnlliinnee
   forw_decrypt           $$ffoorrwwaarrdd__ddeeccrryypptt
   smime_sign_as          $$ssmmiimmee__ddeeffaauulltt__kkeeyy
   post_indent_str        $$ppoosstt__iinnddeenntt__ssttrriinngg
   print_cmd              $$pprriinntt__ccoommmmaanndd
   shorten_hierarchy      $$ssiiddeebbaarr__sshhoorrtteenn__hhiieerraarrcchhyy
   ask_followup_to        $$nnnnttpp__aasskk__ffoolllloowwuupp__ttoo
   ask_x_comment_to       $$nnnnttpp__aasskk__xx__ccoommmmeenntt__ttoo
   catchup_newsgroup      $$nnnnttpp__ccaattcchhuupp
   followup_to_poster     $$nnnnttpp__ffoolllloowwuupp__ttoo__ppoosstteerr
   group_index_format     $$nnnnttpp__ggrroouupp__iinnddeexx__ffoorrmmaatt
   inews                  $$nnnnttpp__iinneewwss
   mime_subject           $$nnnnttpp__mmiimmee__ssuubbjjeecctt
   news_cache_dir         $$nnnnttpp__ccaacchhee__ddiirr
   news_server            $$nnnnttpp__hhoosstt
   newsrc                 $$nnnnttpp__nneewwssrrcc
   nntp_poll              $$nnnnttpp__mmaaiill__cchheecckk
   pop_checkinterval      $$ppoopp__mmaaiill__cchheecckk
   post_moderated         $$nnnnttpp__ppoosstt__mmooddeerraatteedd
   save_unsubscribed      $$nnnnttpp__ssaavvee__uunnssuubbssccrriibbeedd
   show_new_news          $$nnnnttpp__sshhooww__nneeww__nneewwss
   show_only_unread       $$nnnnttpp__sshhooww__oonnllyy__uunnrreeaadd
   x_comment_to           $$nnnnttpp__xx__ccoommmmeenntt__ttoo
   smtp_auth_username     $$ssmmttpp__uusseerr
   smtp_auth_password     $$ssmmttpp__ppaassss
   user_agent             $$aaggeenntt__ssttrriinngg

   The contrib subdirectory contains a script named update-config.pl
   which eases migration.

   A complete list of current variables follows.

1. $abort_noattach

   Type: quadoption

   Default: no

   This variable specifies whether to abort sending if no attachment was
   made but the content references them, i.e. the content matches the
   regular expression given in $$aattttaacchh__rreemmiinndd__rreeggeexxpp. If a match was
   found and this variable is set to _y_e_s, message sending will be aborted
   but the mail will be send nevertheless if set to _n_o.

   This variable and $$aattttaacchh__rreemmiinndd__rreeggeexxpp are intended to remind the
   user to attach files if the message's text references them.

   See also the $$aattttaacchh__rreemmiinndd__rreeggeexxpp variable.

2. $abort_nosubject

   Type: quadoption

   Default: ask-yes

   If set to _y_e_s, when composing messages and no subject is given at the
   subject prompt, composition will be aborted. If set to _n_o, composing
   messages with no subject given at the subject prompt will never be
   aborted.

3. $abort_unmodified

   Type: quadoption

   Default: yes

   If set to _y_e_s, composition will automatically abort after editing the
   message body if no changes are made to the file (this check only
   happens after the _f_i_r_s_t edit of the file). When set to _n_o, composition
   will never be aborted.

4. $agent_string

   Type: boolean

   Default: yes

   When _s_e_t, Mutt-ng will add a ``User-Agent:'' header to outgoing
   messages, indicating which version of Mutt-ng was used for composing
   them.

5. $alias_file

   Type: path

   Default: "~/.muttngrc"

   The default file in which to save aliases created by the
   ``ccrreeaattee--aalliiaass'' function.

   _N_o_t_e_: Mutt-ng will not automatically source this file; you must
   explicitly use the ``ssoouurrccee'' command for it to be executed.

6. $alias_format

   Type: string

   Default: "%4n %2f %t %-10a %r"

   Specifies the format of the data displayed for the ``alias'' menu. The
   following printf(3)-style sequences are available:

   %a
          alias name

   %f
          flags - currently, a "d" for an alias marked for deletion

   %n
          index number

   %r
          address which alias expands to

   %t
          character which indicates if the alias is tagged for inclusion

7. $allow_8bit

   Type: boolean

   Default: yes

   Controls whether 8-bit data is converted to 7-bit using either
   quoted-printable or base64 encoding when sending mail.

8. $allow_ansi

   Type: boolean

   Default: no

   Controls whether ANSI color codes in messages (and color tags in rich
   text messages) are to be interpreted. Messages containing these codes
   are rare, but if this option is set, their text will be colored
   accordingly. Note that this may override your color choices, and even
   present a security problem, since a message could include a line like
   ``[-- PGP output follows ..." and give it the same color as your
   attachment color.

9. $arrow_cursor

   Type: boolean

   Default: no

   When _s_e_t, an arrow (``->'') will be used to indicate the current entry
   in menus instead of highlighting the whole line. On slow network or
   modem links this will make response faster because there is less that
   has to be redrawn on the screen when moving to the next or previous
   entries in the menu.

10. $ascii_chars

   Type: boolean

   Default: no

   If _s_e_t, Mutt-ng will use plain ASCII characters when displaying thread
   and attachment trees, instead of the default ACS characters.

11. $askbcc

   Type: boolean

   Default: no

   If _s_e_t, Mutt-ng will prompt you for blind-carbon-copy (Bcc) recipients
   before editing an outgoing message.

12. $askcc

   Type: boolean

   Default: no

   If _s_e_t, Mutt-ng will prompt you for carbon-copy (Cc) recipients before
   editing the body of an outgoing message.

13. $assumed_charset

   Type: string

   Default: "us-ascii"

   This variable is a colon-separated list of character encoding schemes
   for messages without character encoding indication. Header field
   values and message body content without character encoding indication
   would be assumed that they are written in one of this list. By
   default, all the header fields and message body without any charset
   indication are assumed to be in us-ascii.

   For example, Japanese users might prefer this:

   set assumed_charset="iso-2022-jp:euc-jp:shift_jis:utf-8"

   However, only the first content is valid for the message body. This
   variable is valid only if $$ssttrriicctt__mmiimmee is unset.

14. $attach_format

   Type: string

   Default: "%u%D%I %t%4n %T%.40d%> [%.7m/%.10M, %.6e%?C?, %C?, %s] "

   This variable describes the format of the ``attachment'' menu. The
   following printf(3)-style sequences are understood:

   %C
          charset

   %c
          requires charset conversion (n or c)

   %D
          deleted flag

   %d
          description

   %e
          MIME Content-Transfer-Encoding: header field

   %f
          filename

   %I
          MIME Content-Disposition: header field (I=inline, A=attachment)

   %m
          major MIME type

   %M
          MIME subtype

   %n
          attachment number

   %Q
          "Q", if MIME part qualifies for attachment counting

   %s
          size

   %t
          tagged flag

   %T
          graphic tree characters

   %u
          unlink (=to delete) flag

   %X
          number of qualifying MIME parts in this part and its children

   %>X
          right justify the rest of the string and pad with character "X"

   %|X
          pad to the end of the line with character "X"

15. $attach_remind_regexp

   Type: regular expression

   Default: "attach"

   If this variable is non-empty, muttng will scan a message's contents
   before sending for this regular expression. If it is found, it will
   ask for what to do depending on the setting of $$aabboorrtt__nnooaattttaacchh.

   This variable and $$aabboorrtt__nnooaattttaacchh are intended to remind the user to
   attach files if the message's text references them.

16. $attach_sep

   Type: string

   Default: "\n"

   The separator to add between attachments when operating (saving,
   printing, piping, etc) on a list of tagged attachments.

17. $attach_split

   Type: boolean

   Default: yes

   If this variable is _u_n_s_e_t, when operating (saving, printing, piping,
   etc) on a list of tagged attachments, Mutt-ng will concatenate the
   attachments and will operate on them as a single attachment. The
   ``$$aattttaacchh__sseepp'' separator is added after each attachment. When _s_e_t,
   Mutt-ng will operate on the attachments one by one.

18. $attribution

   Type: string

   Default: "On %d, %n wrote:"

   This is the string that will precede a message which has been included
   in a reply. For a full listing of defined printf(3)-like sequences see
   the section on ``$$iinnddeexx__ffoorrmmaatt''.

19. $auto_tag

   Type: boolean

   Default: no

   When _s_e_t, functions in the _i_n_d_e_x menu which affect a message will be
   applied to all tagged messages (if there are any). When unset, you
   must first use the ``tag-prefix'' function (default: ";") to make the
   next function apply to all tagged messages.

20. $autoedit

   Type: boolean

   Default: no

   When _s_e_t along with ``$$eeddiitt__hheeaaddeerrss'', Mutt-ng will skip the initial
   send-menu and allow you to immediately begin editing the body of your
   message. The send-menu may still be accessed once you have finished
   editing the body of your message.

   Also see ``$$ffaasstt__rreeppllyy''.

21. $beep

   Type: boolean

   Default: yes

   When this variable is _s_e_t, Mutt-ng will beep when an error occurs.

22. $beep_new

   Type: boolean

   Default: no

   When this variable is _s_e_t, Mutt-ng will beep whenever it prints a
   message notifying you of new mail. This is independent of the setting
   of the ``$$bbeeeepp'' variable.

23. $bounce

   Type: quadoption

   Default: ask-yes

   Controls whether you will be asked to confirm bouncing messages. If
   set to _y_e_s you don't get asked if you want to bounce a message.
   Setting this variable to _n_o is not generally useful, and thus not
   recommended, because you are unable to bounce messages.

24. $bounce_delivered

   Type: boolean

   Default: yes

   When this variable is _s_e_t, Mutt-ng will include Delivered-To: header
   fields when bouncing messages. Postfix users may wish to _u_n_s_e_t this
   variable.

25. $braille_friendly

   Type: boolean

   Default: no

   When this variable is set, mutt will place the cursor at the beginning
   of the current line in menus, even when the arrow_cursor variable is
   unset, making it easier for blind persons using Braille displays to
   follow these menus. The option is disabled by default because many
   visual terminals don't permit making the cursor invisible.

26. $certificate_file

   Type: path

   Default: "~/.mutt_certificates"

   Availability: SSL or GNUTLS

   This variable specifies the file where the certificates you trust are
   saved. When an unknown certificate is encountered, you are asked if
   you accept it or not. If you accept it, the certificate can also be
   saved in this file and further connections are automatically accepted.

   You can also manually add CA certificates in this file. Any server
   certificate that is signed with one of these CA certificates are also
   automatically accepted.

   Example: set certificate_file=~/.muttng/certificates

27. $charset

   Type: string

   Default: ""

   Character set your terminal uses to display and enter textual data.

28. $check_new

   Type: boolean

   Default: yes

   _N_o_t_e_: this option only affects _m_a_i_l_d_i_r and _M_H style mailboxes.

   When _s_e_t, Mutt-ng will check for new mail delivered while the mailbox
   is open. Especially with MH mailboxes, this operation can take quite
   some time since it involves scanning the directory and checking each
   file to see if it has already been looked at. If it's _u_n_s_e_t, no check
   for new mail is performed while the mailbox is open.

29. $collapse_unread

   Type: boolean

   Default: yes

   When _u_n_s_e_t, Mutt-ng will not collapse a thread if it contains any
   unread messages.

30. $compose_format

   Type: string

   Default: "-- Mutt-ng: Compose [Approx. msg size: %l Atts: %a]%>-"

   Controls the format of the status line displayed in the ``compose''
   menu. This string is similar to ``$$ssttaattuuss__ffoorrmmaatt'', but has its own
   set of printf(3)-like sequences:

   %a
          total number of attachments

   %h
          local hostname

   %l
          approximate size (in bytes) of the current message

   %v
          Mutt-ng version string

   See the text describing the ``$$ssttaattuuss__ffoorrmmaatt'' option for more
   information on how to set ``$$ccoommppoossee__ffoorrmmaatt''.

31. $config_charset

   Type: string

   Default: ""

   When defined, Mutt-ng will recode commands in rc files from this
   encoding.

32. $confirmappend

   Type: boolean

   Default: yes

   When _s_e_t, Mutt-ng will prompt for confirmation when appending messages
   to an existing mailbox.

33. $confirmcreate

   Type: boolean

   Default: yes

   When _s_e_t, Mutt-ng will prompt for confirmation when saving messages to
   a mailbox which does not yet exist before creating it.

34. $connect_timeout

   Type: number

   Default: 30

   Causes Mutt-ng to timeout a network connection (for IMAP or POP) after
   this many seconds if the connection is not able to be established. A
   negative value causes Mutt-ng to wait indefinitely for the connection
   to succeed.

35. $content_type

   Type: string

   Default: "text/plain"

   Sets the default Content-Type: header field for the body of newly
   composed messages.

36. $copy

   Type: quadoption

   Default: yes

   This variable controls whether or not copies of your outgoing messages
   will be saved for later references. Also see ``$$rreeccoorrdd'',
   ``$$ssaavvee__nnaammee'', ``$$ffoorrccee__nnaammee'' and ``  ffcccc--hhooookk''.

37. $count_attachments

   Type: boolean

   Default: yes

   This variable controls whether attachments should be counted for
   $index_format and its %X expando or not. As for scoring, this variable
   can be used to selectively turn counting on or off instead of removing
   and re-adding rules as prefered because counting requires full loading
   of messages.

   If it is _s_e_t and rules were defined via the attachments and/or
   unattachments commands, counting will be done. If it is _u_n_s_e_t no
   counting will be done regardless whether rules were defined or not.

38. $crypt_autoencrypt

   Type: boolean

   Default: no

   Setting this variable will cause Mutt-ng to always attempt to PGP
   encrypt outgoing messages. This is probably only useful in connection
   to the _s_e_n_d_-_h_o_o_k command. It can be overridden by use of the _p_g_p_-_m_e_n_u,
   when encryption is not required or signing is requested as well. If
   ``$$ssmmiimmee__iiss__ddeeffaauulltt'' is _s_e_t, then OpenSSL is used instead to create
   S/MIME messages and settings can be overridden by use of the
   _s_m_i_m_e_-_m_e_n_u. (Crypto only)

39. $crypt_autopgp

   Type: boolean

   Default: yes

   This variable controls whether or not Mutt-ng may automatically enable
   PGP encryption/signing for messages. See also ``$$ccrryypptt__aauuttooeennccrryypptt'',
   ``$$ccrryypptt__rreeppllyyeennccrryypptt'', ``$$ccrryypptt__aauuttoossiiggnn'', ``$$ccrryypptt__rreeppllyyssiiggnn'' and
   ``$$ssmmiimmee__iiss__ddeeffaauulltt''.

40. $crypt_autosign

   Type: boolean

   Default: no

   Setting this variable will cause Mutt-ng to always attempt to
   cryptographically sign outgoing messages. This can be overridden by
   use of the _p_g_p_-_m_e_n_u, when signing is not required or encryption is
   requested as well. If ``$$ssmmiimmee__iiss__ddeeffaauulltt'' is _s_e_t, then OpenSSL is
   used instead to create S/MIME messages and settings can be overridden
   by use of the _s_m_i_m_e_-_m_e_n_u. (Crypto only)

41. $crypt_autosmime

   Type: boolean

   Default: yes

   This variable controls whether or not Mutt-ng may automatically enable
   S/MIME encryption/signing for messages. See also
   ``$$ccrryypptt__aauuttooeennccrryypptt'', ``$$ccrryypptt__rreeppllyyeennccrryypptt'', ``$$ccrryypptt__aauuttoossiiggnn'',
   ``$$ccrryypptt__rreeppllyyssiiggnn'' and ``$$ssmmiimmee__iiss__ddeeffaauulltt''.

42. $crypt_replyencrypt

   Type: boolean

   Default: yes

   If _s_e_t, automatically PGP or OpenSSL encrypt replies to messages which
   are encrypted. (Crypto only)

43. $crypt_replysign

   Type: boolean

   Default: no

   If _s_e_t, automatically PGP or OpenSSL sign replies to messages which
   are signed.

   _N_o_t_e_: this does not work on messages that are encrypted _a_n_d signed!
   (Crypto only)

44. $crypt_replysignencrypted

   Type: boolean

   Default: no

   If _s_e_t, automatically PGP or OpenSSL sign replies to messages which
   are encrypted. This makes sense in combination with
   ``$$ccrryypptt__rreeppllyyeennccrryypptt'', because it allows you to sign all messages
   which are automatically encrypted. This works around the problem noted
   in ``$$ccrryypptt__rreeppllyyssiiggnn'', that Mutt-ng is not able to find out whether
   an encrypted message is also signed. (Crypto only)

45. $crypt_timestamp

   Type: boolean

   Default: yes

   If _s_e_t, Mutt-ng will include a time stamp in the lines surrounding PGP
   or S/MIME output, so spoofing such lines is more difficult. If you are
   using colors to mark these lines, and rely on these, you may _u_n_s_e_t
   this setting. (Crypto only)

46. $crypt_use_gpgme

   Type: boolean

   Default: no

   This variable controls the use the GPGME enabled crypto backends. If
   it is _s_e_t and Mutt-ng was build with gpgme support, the gpgme code for
   S/MIME and PGP will be used instead of the classic code.

   _N_o_t_e: You need to use this option in your .muttngrc configuration file
   as it won't have any effect when used interactively.

47. $crypt_verify_sig

   Type: quadoption

   Default: yes

   If ``_y_e_s'', always attempt to verify PGP or S/MIME signatures. If
   ``_a_s_k'', ask whether or not to verify the signature. If ``_n_o'', never
   attempt to verify cryptographic signatures. (Crypto only)

48. $date_format

   Type: string

   Default: "!%a, %b %d, %Y at %I:%M:%S%p %Z"

   This variable controls the format of the date printed by the ``%d''
   sequence in ``$$iinnddeexx__ffoorrmmaatt''. This is passed to strftime(3) to
   process the date.

   Unless the first character in the string is a bang (``!''), the month
   and week day names are expanded according to the locale specified in
   the variable ``$$llooccaallee''. If the first character in the string is a
   bang, the bang is discarded, and the month and week day names in the
   rest of the string are expanded in the _C locale (that is in US
   English).

49. $debug_level

   Type: number

   Default: 1

   Availability: debug

   This variable specifies the current debug level and may be used to
   increase or decrease the verbosity level during runtime. It overrides
   the level given with the -d command line option.

   Currently, this number must be >= 0 and <= 5 and muttng must be
   started with -d to enable debugging at all; enabling at runtime is not
   possible.

50. $default_hook

   Type: string

   Default: "~f %s !~P | (~P ~C %s)"

   This variable controls how send-hooks, message-hooks, save-hooks, and
   fcc-hooks will be interpreted if they are specified with only a simple
   regexp, instead of a matching pattern. The hooks are expanded when
   they are declared, so a hook will be interpreted according to the
   value of this variable at the time the hook is declared. The default
   value matches if the message is either from a user matching the
   regular expression given, or if it is from you (if the from address
   matches ``alternates'') and is to or cc'ed to a user matching the
   given regular expression.

51. $delete

   Type: quadoption

   Default: ask-yes

   Controls whether or not messages are really deleted when closing or
   synchronizing a mailbox. If set to _y_e_s, messages marked for deleting
   will automatically be purged without prompting. If set to _n_o, messages
   marked for deletion will be kept in the mailbox.

52. $delete_space

   Type: boolean

   Default: no

   When sending messages with format=flowed by _s_e_t_t_i_n_g the $$tteexxtt__fflloowweedd
   variable, this variable specifies whether to also set the DelSp
   parameter to yes. If this is _u_n_s_e_t, no additional parameter will be
   send as a value of no already is the default behavior.

   _N_o_t_e_: this variable only has an effect on _o_u_t_g_o_i_n_g messages (if
   $$tteexxtt__fflloowweedd is _s_e_t) but not on incomming.

53. $delete_untag

   Type: boolean

   Default: yes

   If this option is _s_e_t, Mutt-ng will untag messages when marking them
   for deletion. This applies when you either explicitly delete a
   message, or when you save it to another folder.

54. $digest_collapse

   Type: boolean

   Default: yes

   If this option is _s_e_t, Mutt-ng's received-attachments menu will not
   show the subparts of individual messages in a multipart/digest. To see
   these subparts, press 'v' on that menu.

55. $display_filter

   Type: path

   Default: ""

   When _s_e_t, specifies a command used to filter messages. When a message
   is viewed it is passed as standard input to $$ddiissppllaayy__ffiilltteerr, and the
   filtered message is read from the standard output.

56. $dotlock_program

   Type: path

   Default: "$muttng_bindir/muttng_dotlock"

   Availability: Standalone and Dotlock

   Contains the path of the muttng_dotlock(1) binary to be used by
   Mutt-ng.

57. $dsn_notify

   Type: string

   Default: ""

   _N_o_t_e_: you should not enable this unless you are using Sendmail 8.8.x
   or greater or in connection with the SMTP support via libESMTP.

   This variable sets the request for when notification is returned. The
   string consists of a comma separated list (no spaces!) of one or more
   of the following: _n_e_v_e_r, to never request notification, _f_a_i_l_u_r_e, to
   request notification on transmission failure, _d_e_l_a_y, to be notified of
   message delays, _s_u_c_c_e_s_s, to be notified of successful transmission.

   Example: set dsn_notify="failure,delay"

58. $dsn_return

   Type: string

   Default: ""

   _N_o_t_e_: you should not enable this unless you are using Sendmail 8.8.x
   or greater or in connection with the SMTP support via libESMTP.

   This variable controls how much of your message is returned in DSN
   messages. It may be set to either _h_d_r_s to return just the message
   header, or _f_u_l_l to return the full message.

   Example: set dsn_return=hdrs

59. $duplicate_threads

   Type: boolean

   Default: yes

   This variable controls whether Mutt-ng, when sorting by threads,
   threads messages with the same Message-ID: header field together. If
   it is _s_e_t, it will indicate that it thinks they are duplicates of each
   other with an equals sign in the thread diagram.

60. $edit_headers

   Type: boolean

   Default: no

   This option allows you to edit the header of your outgoing messages
   along with the body of your message.

   Which empty header fields to show is controlled by the $$eeddiittoorr__hheeaaddeerrss
   option.

61. $editor

   Type: path

   Default: ""

   This variable specifies which editor is used by Mutt-ng. It defaults
   to the value of the $VISUAL, or $EDITOR, environment variable, or to
   the string "vi" if neither of those are set.

62. $editor_headers

   Type: string

   Default: "From: To: Cc: Bcc: Subject: Reply-To: Newsgroups:
   Followup-To: X-Comment-To:"

   If $$eeddiitt__hheeaaddeerrss is _s_e_t, this space-separated list specifies which
   _n_o_n_-_e_m_p_t_y header fields to edit in addition to user-defined headers.

   Note: if $$eeddiitt__hheeaaddeerrss had to be turned on by force because
   $$ssttrriicctt__mmaaiillttoo is _u_n_s_e_t, this option has no effect.

63. $encode_from

   Type: boolean

   Default: no

   When _s_e_t, Mutt-ng will quoted-printable encode messages when they
   contain the string ``From '' (note the trailing space) in the
   beginning of a line. Useful to avoid the tampering certain mail
   delivery and transport agents tend to do with messages.

   _N_o_t_e_: as Mutt-ng currently violates RfC3676 defining format=flowed,
   it's <em/strongly/ advised to _s_e_t this option although discouraged by
   the standard. Alternatively, you must take care of space-stuffing
   <tt/From / lines (with a trailing space) yourself.

64. $entropy_file

   Type: path

   Default: ""

   Availability: SSL

   The file which includes random data that is used to initialize SSL
   library functions.

65. $envelope_from_address

   Type: e-mail address

   Default: ""

   Manually sets the _e_n_v_e_l_o_p_e sender for outgoing messages. This value is
   ignored if ``$$uussee__eennvveellooppee__ffrroomm'' is unset.

66. $escape

   Type: string

   Default: "~"

   Escape character to use for functions in the builtin editor.

67. $fast_reply

   Type: boolean

   Default: no

   When _s_e_t, the initial prompt for recipients and subject are skipped
   when replying to messages, and the initial prompt for subject is
   skipped when forwarding messages.

   _N_o_t_e_: this variable has no effect when the ``$$aauuttooeeddiitt'' variable is
   _s_e_t.

68. $fcc_attach

   Type: boolean

   Default: yes

   This variable controls whether or not attachments on outgoing messages
   are saved along with the main body of your message.

69. $fcc_clear

   Type: boolean

   Default: no

   When this variable is _s_e_t, FCCs will be stored unencrypted and
   unsigned, even when the actual message is encrypted and/or signed.
   (PGP only)

70. $file_charset

   Type: string

   Default: ""

   This variable is a colon-separated list of character encoding schemes
   for text file attatchments. If _u_n_s_e_t, $$cchhaarrsseett value will be used
   instead. For example, the following configuration would work for
   Japanese text handling:

   set file_charset="iso-2022-jp:euc-jp:shift_jis:utf-8"

   Note: ``iso-2022-*'' must be put at the head of the value as shown
   above if included.

71. $folder

   Type: path

   Default: "~/Mail"

   Specifies the default location of your mailboxes. A ``+'' or ``='' at
   the beginning of a pathname will be expanded to the value of this
   variable. Note that if you change this variable from the default value
   you need to make sure that the assignment occurs _b_e_f_o_r_e you use ``+''
   or ``='' for any other variables since expansion takes place during
   the ``set'' command.

72. $folder_format

   Type: string

   Default: "%2C %t %N %F %2l %-8.8u %-8.8g %8s %d %f"

   This variable allows you to customize the file browser display to your
   personal taste. This string is similar to ``$$iinnddeexx__ffoorrmmaatt'', but has
   its own set of printf(3)-like sequences:

   %C
          current file number

   %d
          date/time folder was last modified

   %f
          filename

   %F
          file permissions

   %g
          group name (or numeric gid, if missing)

   %l
          number of hard links

   %N
          N if folder has new mail, blank otherwise

   %s
          size in bytes

   %t
          * if the file is tagged, blank otherwise

   %u
          owner name (or numeric uid, if missing)

   %>X
          right justify the rest of the string and pad with character "X"

   %|X
          pad to the end of the line with character "X"

73. $followup_to

   Type: boolean

   Default: yes

   Controls whether or not the Mail-Followup-To: header field is
   generated when sending mail. When _s_e_t, Mutt-ng will generate this
   field when you are replying to a known mailing list, specified with
   the ``subscribe'' or ``lliissttss'' commands or detected by common mailing
   list headers.

   This field has two purposes. First, preventing you from receiving
   duplicate copies of replies to messages which you send to mailing
   lists. Second, ensuring that you do get a reply separately for any
   messages sent to known lists to which you are not subscribed. The
   header will contain only the list's address for subscribed lists, and
   both the list address and your own email address for unsubscribed
   lists. Without this header, a group reply to your message sent to a
   subscribed list will be sent to both the list and your address,
   resulting in two copies of the same email for you.

74. $force_buffy_check

   Type: boolean

   Default: no

   When _s_e_t, it causes Mutt-ng to check for new mail when the _b_u_f_f_y_-_l_i_s_t
   command is invoked. When _u_n_s_e_t, _b_u_f_f_y___l_i_s_t will just list all
   mailboxes which are already known to have new mail.

   Also see the following variables: ``$$ttiimmeeoouutt'', ``$$mmaaiill__cchheecckk'' and
   ``$$iimmaapp__mmaaiill__cchheecckk''.

75. $force_list_reply

   Type: quadoption

   Default: ask-no

   This variable controls what effect ordinary replies have on mailing
   list messages: if _s_e_t, a normal reply will be interpreted as
   list-reply while if it's _u_n_s_e_t the reply functions work as usual.

76. $force_name

   Type: boolean

   Default: no

   This variable is similar to ``$$ssaavvee__nnaammee'', except that Mutt-ng will
   store a copy of your outgoing message by the username of the address
   you are sending to even if that mailbox does not exist.

   Also see the ``$$rreeccoorrdd'' variable.

77. $forward_decode

   Type: boolean

   Default: yes

   Controls the decoding of complex MIME messages into text/plain when
   forwarding a message. The message header is also RFC2047 decoded. This
   variable is only used, if ``$$mmiimmee__ffoorrwwaarrdd'' is _u_n_s_e_t, otherwise
   ``$$mmiimmee__ffoorrwwaarrdd__ddeeccooddee'' is used instead.

78. $forward_decrypt

   Type: boolean

   Default: yes

   Controls the handling of encrypted messages when forwarding a message.
   When _s_e_t, the outer layer of encryption is stripped off. This variable
   is only used if ``$$mmiimmee__ffoorrwwaarrdd'' is _s_e_t and ``$$mmiimmee__ffoorrwwaarrdd__ddeeccooddee''
   is _u_n_s_e_t. (PGP only)

79. $forward_edit

   Type: quadoption

   Default: yes

   This quadoption controls whether or not the user is automatically
   placed in the editor when forwarding messages. For those who always
   want to forward with no modification, use a setting of _n_o.

80. $forward_format

   Type: string

   Default: "[%a: %s]"

   This variable controls the default subject when forwarding a message.
   It uses the same format sequences as the ``$$iinnddeexx__ffoorrmmaatt'' variable.

81. $forward_quote

   Type: boolean

   Default: no

   When _s_e_t forwarded messages included in the main body of the message
   (when ``$$mmiimmee__ffoorrwwaarrdd'' is _u_n_s_e_t) will be quoted using
   ``$$iinnddeenntt__ssttrriinngg''.

82. $from

   Type: e-mail address

   Default: ""

   This variable contains a default from address. It can be overridden
   using my_hdr (including from send-hooks) and ``$$rreevveerrssee__nnaammee''. This
   variable is ignored if ``$$uussee__ffrroomm'' is unset.

   E.g. you can use send-hook Mutt-ng-devel@lists.berlios.de 'my_hdr
   From: Foo Bar <foo@bar.fb>' when replying to the Mutt-ng developer's
   mailing list and Mutt-ng takes this email address.

   Defaults to the contents of the environment variable $EMAIL.

83. $gecos_mask

   Type: regular expression

   Default: "^[^,]*"

   A regular expression used by Mutt-ng to parse the GECOS field of a
   password entry when expanding the alias. By default the regular
   expression is set to ``^[^,]*'' which will return the string up to the
   first ``,'' encountered. If the GECOS field contains a string like
   "lastname, firstname" then you should do: set gecos_mask=".*".

   This can be useful if you see the following behavior: you address a
   e-mail to user ID stevef whose full name is Steve Franklin. If Mutt-ng
   expands stevef to ``Franklin'' stevef@foo.bar then you should set the
   gecos_mask to a regular expression that will match the whole name so
   Mutt-ng will expand ``Franklin'' to ``Franklin, Steve''.

84. $hdrs

   Type: boolean

   Default: yes

   When _u_n_s_e_t, the header fields normally added by the ``mmyy__hhddrr'' command
   are not created. This variable _m_u_s_t be _u_n_s_e_t before composing a new
   message or replying in order to take effect. If _s_e_t, the user defined
   header fields are added to every new message.

85. $header

   Type: boolean

   Default: no

   When _s_e_t, this variable causes Mutt-ng to include the header of the
   message you are replying to into the edit buffer. The ``$$wweeeedd''
   setting applies.

86. $header_cache

   Type: path

   Default: ""

   Availability: Header Cache

   The $$hheeaaddeerr__ccaacchhee variable points to the header cache database.

   If $$hheeaaddeerr__ccaacchhee points to a directory it will contain a header cache
   database per folder. If $$hheeaaddeerr__ccaacchhee points to a file that file will
   be a single global header cache. By default it is _u_n_s_e_t so no header
   caching will be used.

87. $header_cache_compress

   Type: boolean

   Default: no

   If enabled the header cache will be compressed. So only one fifth of
   the usual diskspace is used, but the uncompression can result in a
   slower open of the cached folder.

88. $help

   Type: boolean

   Default: yes

   When _s_e_t, help lines describing the bindings for the major functions
   provided by each menu are displayed on the first line of the screen.

   _N_o_t_e_: The binding will not be displayed correctly if the function is
   bound to a sequence rather than a single keystroke. Also, the help
   line may not be updated if a binding is changed while Mutt-ng is
   running. Since this variable is primarily aimed at new users, neither
   of these should present a major problem.

89. $hidden_host

   Type: boolean

   Default: no

   When _s_e_t, Mutt-ng will skip the host name part of ``$$hhoossttnnaammee''
   variable when adding the domain part to addresses. This variable does
   not affect the generation of Message-ID: header fields, and it will
   not lead to the cut-off of first-level domains.

90. $hide_limited

   Type: boolean

   Default: no

   When _s_e_t, Mutt-ng will not show the presence of messages that are
   hidden by limiting, in the thread tree.

91. $hide_missing

   Type: boolean

   Default: yes

   When _s_e_t, Mutt-ng will not show the presence of missing messages in
   the thread tree.

92. $hide_thread_subject

   Type: boolean

   Default: yes

   When _s_e_t, Mutt-ng will not show the subject of messages in the thread
   tree that have the same subject as their parent or closest previously
   displayed sibling.

93. $hide_top_limited

   Type: boolean

   Default: no

   When _s_e_t, Mutt-ng will not show the presence of messages that are
   hidden by limiting, at the top of threads in the thread tree. Note
   that when $$hhiiddee__mmiissssiinngg is _s_e_t, this option will have no effect.

94. $hide_top_missing

   Type: boolean

   Default: yes

   When _s_e_t, Mutt-ng will not show the presence of missing messages at
   the top of threads in the thread tree. Note that when $$hhiiddee__lliimmiitteedd is
   _s_e_t, this option will have no effect.

95. $history

   Type: number

   Default: 10

   This variable controls the size (in number of strings remembered) of
   the string history buffer. The buffer is cleared each time the
   variable is changed.

96. $honor_followup_to

   Type: quadoption

   Default: yes

   This variable controls whether or not a Mail-Followup-To: header field
   is honored when group-replying to a message.

97. $hostname

   Type: string

   Default: ""

   Specifies the hostname to use after the ``@'' in local e-mail
   addresses and during generation of Message-ID: headers.

   Please be sure to really know what you are doing when changing this
   variable to configure a custom domain part of Message-IDs.

98. $ignore_list_reply_to

   Type: boolean

   Default: no

   Affects the behaviour of the _r_e_p_l_y function when replying to messages
   from mailing lists. When _s_e_t, if the ``Reply-To:'' header field is set
   to the same value as the ``To:'' header field, Mutt-ng assumes that
   the ``Reply-To:'' header field was set by the mailing list to automate
   responses to the list, and will ignore this field. To direct a
   response to the mailing list when this option is set, use the
   _l_i_s_t_-_r_e_p_l_y function; _g_r_o_u_p_-_r_e_p_l_y will reply to both the sender and the
   list. Remember: This option works only for mailing lists which are
   explicitly set in your muttngrc configuration file.

99. $imap_authenticators

   Type: string

   Default: ""

   Availability: IMAP

   This is a colon-delimited list of authentication methods Mutt-ng may
   attempt to use to log in to an IMAP server, in the order Mutt-ng
   should try them. Authentication methods are either ``login'' or the
   right side of an IMAP ``AUTH='' capability string, e.g.
   ``digest-md5'', ``gssapi'' or ``cram-md5''. This parameter is
   case-insensitive.

   If this parameter is _u_n_s_e_t (the default) Mutt-ng will try all
   available methods, in order from most-secure to least-secure.

   Example: set imap_authenticators="gssapi:cram-md5:login"

   _N_o_t_e_: Mutt-ng will only fall back to other authentication methods if
   the previous methods are unavailable. If a method is available but
   authentication fails, Mutt-ng will not connect to the IMAP server.

100. $imap_check_subscribed

   Type: boolean

   Default: no

   When _s_e_t, mutt will fetch the set of subscribed folders from your
   server on connection, and add them to the set of mailboxes it polls
   for new mail. See also the ``mmaaiillbbooxxeess'' command.

101. $imap_delim_chars

   Type: string

   Default: "/."

   Availability: IMAP

   This contains the list of characters which you would like to treat as
   folder separators for displaying IMAP paths. In particular it helps in
   using the '=' shortcut for your $$ffoollddeerr variable.

102. $imap_headers

   Type: string

   Default: ""

   Availability: IMAP

   Mutt-ng requests these header fields in addition to the default
   headers (``DATE FROM SUBJECT TO CC MESSAGE-ID REFERENCES CONTENT-TYPE
   CONTENT-DESCRIPTION IN-REPLY-TO REPLY-TO LINES X-LABEL'') from IMAP
   servers before displaying the ``index'' menu. You may want to add more
   headers for spam detection.

   _N_o_t_e_: This is a space separated list.

103. $imap_home_namespace

   Type: string

   Default: ""

   Availability: IMAP

   You normally want to see your personal folders alongside your INBOX in
   the IMAP browser. If you see something else, you may set this variable
   to the IMAP path to your folders.

104. $imap_keepalive

   Type: number

   Default: 900

   Availability: IMAP

   This variable specifies the maximum amount of time in seconds that
   Mutt-ng will wait before polling open IMAP connections, to prevent the
   server from closing them before Mutt-ng has finished with them.

   The default is well within the RFC-specified minimum amount of time
   (30 minutes) before a server is allowed to do this, but in practice
   the RFC does get violated every now and then.

   Reduce this number if you find yourself getting disconnected from your
   IMAP server due to inactivity.

105. $imap_list_subscribed

   Type: boolean

   Default: no

   Availability: IMAP

   This variable configures whether IMAP folder browsing will look for
   only subscribed folders or all folders. This can be toggled in the
   IMAP browser with the _t_o_g_g_l_e_-_s_u_b_s_c_r_i_b_e_d function.

106. $imap_login

   Type: string

   Default: ""

   Availability: IMAP

   Your login name on the IMAP server.

   This variable defaults to the value of ``$$iimmaapp__uusseerr.''

107. $imap_mail_check

   Type: number

   Default: 300

   This variable configures how often (in seconds) Mutt-ng should look
   for new mail in IMAP folders. This is split from the ``mmaaiill__cchheecckk''
   variable to generate less traffic and get more accurate information
   for local folders.

108. $imap_pass

   Type: string

   Default: ""

   Availability: IMAP

   Specifies the password for your IMAP account. If _u_n_s_e_t, Mutt-ng will
   prompt you for your password when you invoke the fetch-mail function.

   _W_a_r_n_i_n_g: you should only use this option when you are on a fairly
   secure machine, because the superuser can read your configuration even
   if you are the only one who can read the file.

109. $imap_passive

   Type: boolean

   Default: yes

   Availability: IMAP

   When _s_e_t, Mutt-ng will not open new IMAP connections to check for new
   mail. Mutt-ng will only check for new mail over existing IMAP
   connections. This is useful if you don't want to be prompted to
   user/password pairs on Mutt-ng invocation, or if opening the
   connection is slow.

110. $imap_peek

   Type: boolean

   Default: yes

   Availability: IMAP

   If _s_e_t, Mutt-ng will avoid implicitly marking your mail as read
   whenever you fetch a message from the server. This is generally a good
   thing, but can make closing an IMAP folder somewhat slower. This
   option exists to appease speed freaks.

111. $imap_reconnect

   Type: quadoption

   Default: ask-yes

   Availability: IMAP

   Controls whether or not Mutt-ng will try to reconnect to IMAP server
   when the connection is lost.

112. $imap_servernoise

   Type: boolean

   Default: yes

   Availability: IMAP

   When _s_e_t, Mutt-ng will display warning messages from the IMAP server
   as error messages. Since these messages are often harmless, or
   generated due to configuration problems on the server which are out of
   the users' hands, you may wish to suppress them at some point.

113. $imap_user

   Type: string

   Default: ""

   Availability: IMAP

   The name of the user whose mail you intend to access on the IMAP
   server.

   This variable defaults to your user name on the local machine.

114. $implicit_autoview

   Type: boolean

   Default: no

   If _s_e_t, Mutt-ng will look for a mailcap entry with the
   ``copiousoutput'' flag set for _e_v_e_r_y MIME attachment it doesn't have
   an internal viewer defined for. If such an entry is found, Mutt-ng
   will use the viewer defined in that entry to convert the body part to
   text form.

115. $include

   Type: quadoption

   Default: ask-yes

   Controls whether or not a copy of the message(s) you are replying to
   is included in your reply.

116. $include_onlyfirst

   Type: boolean

   Default: no

   Controls whether or not Mutt-ng includes only the first attachment of
   the message you are replying.

117. $indent_string

   Type: string

   Default: "> "

   Specifies the string to prepend to each line of text quoted in a
   message to which you are replying. You are strongly encouraged not to
   change this value, as it tends to agitate the more fanatical netizens.

118. $index_format

   Type: string

   Default: "%4C %Z %{%b %d} %-15.15L (%?l?%4l&%4c?) %s"

   This variable allows you to customize the message index display to
   your personal taste.

   ``Format strings'' are similar to the strings used in the ``C''
   function printf(3) to format output (see the man page for more
   detail). The following sequences are defined in Mutt-ng:

   %a
          address of the author

   %A
          reply-to address (if present; otherwise: address of author)

   %b
          filename of the original message folder (think mailBox)

   %B
          the list to which the letter was sent, or else the folder name
          (%b).

   %c
          number of characters (bytes) in the message

   %C
          current message number

   %d
          date and time of the message in the format specified by
          ``date_format'' converted to sender's time zone

   %D
          date and time of the message in the format specified by
          ``date_format'' converted to the local time zone

   %e
          current message number in thread

   %E
          number of messages in current thread

   %f
          entire From: line (address + real name)

   %F
          author name, or recipient name if the message is from you

   %H
          spam attribute(s) of this message

   %g
          newsgroup name (if compiled with nntp support)

   %i
          message-id of the current message

   %l
          number of lines in the message (does not work with maildir, mh,
          and possibly IMAP folders)

   %L
          If an address in the To or CC header field matches an address
          defined by the users ``subscribe'' command, this displays "To
          <list-name>", otherwise the same as %F.

   %m
          total number of message in the mailbox

   %M
          number of hidden messages if the thread is collapsed.

   %N
          message score

   %n
          author's real name (or address if missing)

   %O
          (_O_riginal save folder) Where Mutt-ng would formerly have
          stashed the message: list name or recipient name if no list

   %s
          subject of the message

   %S
          status of the message (N/D/d/!/r/*)

   %t
          `to:' field (recipients)

   %T
          the appropriate character from the $$ttoo__cchhaarrss string

   %u
          user (login) name of the author

   %v
          first name of the author, or the recipient if the message is
          from you

   %W
          name of organization of author (`organization:' field)

   %X
          number of attachments

   %y
          `x-label:' field, if present

   %Y
          `x-label' field, if present, and (1) not at part of a thread
          tree, (2) at the top of a thread, or (3) `x-label' is different
          from preceding message's `x-label'.

   %Z
          message status flags

   %{fmt}
          the date and time of the message is converted to sender's time
          zone, and ``fmt'' is expanded by the library function
          ``strftime''; a leading bang disables locales

   %[fmt]
          the date and time of the message is converted to the local time
          zone, and ``fmt'' is expanded by the library function
          ``strftime''; a leading bang disables locales

   %(fmt)
          the local date and time when the message was received. ``fmt''
          is expanded by the library function ``strftime''; a leading
          bang disables locales

   %<fmt>
          the current local time. ``fmt'' is expanded by the library
          function ``strftime''; a leading bang disables locales.

   %>X
          right justify the rest of the string and pad with character "X"

   %|X
          pad to the end of the line with character "X"

   See also: ``$$ttoo__cchhaarrss''.

119. $ispell

   Type: path

   Default: "ispell"

   How to invoke ispell (GNU's spell-checking software).

120. $keep_flagged

   Type: boolean

   Default: no

   If _s_e_t, read messages marked as flagged will not be moved from your
   spool mailbox to your ``$$mmbbooxx'' mailbox, or as a result of a
   ``mmbbooxx--hhooookk'' command.

121. $locale

   Type: string

   Default: "C"

   The locale used by strftime(3) to format dates. Legal values are the
   strings your system accepts for the locale variable LC_TIME.

122. $mail_check

   Type: number

   Default: 5

   This variable configures how often (in seconds) Mutt-ng should look
   for new mail.

   _N_o_t_e_: This does not apply to IMAP mailboxes, see $$iimmaapp__mmaaiill__cchheecckk.

123. $mailcap_path

   Type: string

   Default: ""

   This variable specifies which files to consult when attempting to
   display MIME bodies not directly supported by Mutt-ng.

124. $mailcap_sanitize

   Type: boolean

   Default: yes

   If _s_e_t, Mutt-ng will restrict possible characters in mailcap %
   expandos to a well-defined set of safe characters. This is the safe
   setting, but we are not sure it doesn't break some more advanced MIME
   stuff.

   _D_O_N_'_T_ _C_H_A_N_G_E_ _T_H_I_S_ _S_E_T_T_I_N_G_ _U_N_L_E_S_S_ _Y_O_U_ _A_R_E_ _R_E_A_L_L_Y_ _S_U_R_E_ _W_H_A_T_ _Y_O_U_ _A_R_E
   _D_O_I_N_G_!

125. $maildir_header_cache_verify

   Type: boolean

   Default: yes

   Availability: Header Cache

   Check for Maildir unaware programs other than Mutt-ng having modified
   maildir files when the header cache is in use. This incurs one stat(2)
   per message every time the folder is opened.

126. $maildir_trash

   Type: boolean

   Default: no

   If _s_e_t, messages marked as deleted will be saved with the maildir
   (T)rashed flag instead of physically deleted.

   _N_O_T_E_: this only applies to maildir-style mailboxes. Setting it will
   have no effect on other mailbox types.

   It is similiar to the trash option.

127. $mark_old

   Type: boolean

   Default: yes

   Controls whether or not Mutt-ng marks _n_e_w_u_n_r_e_a_d messages as _o_l_d if you
   exit a mailbox without reading them.

   With this option _s_e_t, the next time you start Mutt-ng, the messages
   will show up with an "O" next to them in the ``index'' menu,
   indicating that they are old.

128. $markers

   Type: boolean

   Default: yes

   Controls the display of wrapped lines in the internal pager. If set, a
   ``+'' marker is displayed at the beginning of wrapped lines. Also see
   the ``$$ssmmaarrtt__wwrraapp'' variable.

129. $mask

   Type: regular expression

   Default: "!^\.[^.]"

   A regular expression used in the file browser, optionally preceded by
   the _n_o_t operator ``!''. Only files whose names match this mask will be
   shown. The match is always case-sensitive.

130. $max_display_recips

   Type: number

   Default: 0

   When set non-zero, this specifies the maximum number of recipient
   header lines (To:, Cc: and Bcc:) to display in the pager if header
   weeding is turned on. In case the number of lines exeeds its value,
   the last line will have 3 dots appended.

131. $max_line_length

   Type: number

   Default: 0

   When _s_e_t, the maximum line length for displaying ``format = flowed''
   messages is limited to this length. A value of 0 (which is also the
   default) means that the maximum line length is determined by the
   terminal width and $$wwrraappmmaarrggiinn.

132. $mbox

   Type: path

   Default: "~/mbox"

   This specifies the folder into which read mail in your ``$$ssppoooollffiillee''
   folder will be appended.

133. $mbox_type

   Type: folder magic

   Default: mbox

   The default mailbox type used when creating new folders. May be any of
   mbox, MMDF, MH and Maildir.

134. $menu_context

   Type: number

   Default: 0

   This variable controls the number of lines of context that are given
   when scrolling through menus. (Similar to ``$$ppaaggeerr__ccoonntteexxtt''.)

135. $menu_move_off

   Type: boolean

   Default: yes

   When _u_n_s_e_t, the bottom entry of menus will never scroll up past the
   bottom of the screen, unless there are less entries than lines. When
   _s_e_t, the bottom entry may move off the bottom.

136. $menu_scroll

   Type: boolean

   Default: no

   When _s_e_t, menus will be scrolled up or down one line when you attempt
   to move across a screen boundary. If _u_n_s_e_t, the screen is cleared and
   the next or previous page of the menu is displayed (useful for slow
   links to avoid many redraws).

137. $message_format

   Type: string

   Default: "%s"

   This is the string displayed in the ``attachment'' menu for
   attachments of type message/rfc822. For a full listing of defined
   printf(3)-like sequences see the section on ``$$iinnddeexx__ffoorrmmaatt''.

138. $meta_key

   Type: boolean

   Default: no

   If _s_e_t, forces Mutt-ng to interpret keystrokes with the high bit (bit
   8) set as if the user had pressed the ESC key and whatever key remains
   after having the high bit removed. For example, if the key pressed has
   an ASCII value of 0xf8, then this is treated as if the user had
   pressed ESC then ``x''. This is because the result of removing the
   high bit from ``0xf8'' is ``0x78'', which is the ASCII character
   ``x''.

139. $metoo

   Type: boolean

   Default: no

   If _u_n_s_e_t, Mutt-ng will remove your address (see the ``alternates''
   command) from the list of recipients when replying to a message.

140. $mh_purge

   Type: boolean

   Default: no

   When _u_n_s_e_t, Mutt-ng will mimic mh's behaviour and rename deleted
   messages to _,_<_o_l_d_ _f_i_l_e_ _n_a_m_e_> in mh folders instead of really deleting
   them. If the variable is set, the message files will simply be
   deleted.

141. $mh_seq_flagged

   Type: string

   Default: "flagged"

   The name of the MH sequence used for flagged messages.

142. $mh_seq_replied

   Type: string

   Default: "replied"

   The name of the MH sequence used to tag replied messages.

143. $mh_seq_unseen

   Type: string

   Default: "unseen"

   The name of the MH sequence used for unseen messages.

144. $mime_forward

   Type: quadoption

   Default: no

   When _s_e_t, the message you are forwarding will be attached as a
   separate MIME part instead of included in the main body of the
   message.

   This is useful for forwarding MIME messages so the receiver can
   properly view the message as it was delivered to you. If you like to
   switch between MIME and not MIME from mail to mail, set this variable
   to ask-no or ask-yes.

   Also see ``$$ffoorrwwaarrdd__ddeeccooddee'' and ``$$mmiimmee__ffoorrwwaarrdd__ddeeccooddee''.

145. $mime_forward_decode

   Type: boolean

   Default: no

   Controls the decoding of complex MIME messages into text/plain when
   forwarding a message while ``$$mmiimmee__ffoorrwwaarrdd'' is _s_e_t. Otherwise
   ``$$ffoorrwwaarrdd__ddeeccooddee'' is used instead.

146. $mime_forward_rest

   Type: quadoption

   Default: yes

   When forwarding multiple attachments of a MIME message from the
   recvattach menu, attachments which cannot be decoded in a reasonable
   manner will be attached to the newly composed message if this option
   is set.

147. $mix_entry_format

   Type: string

   Default: "%4n %c %-16s %a"

   Availability: Mixmaster

   This variable describes the format of a remailer line on the mixmaster
   chain selection screen. The following printf(3)-like sequences are
   supported:

   %n
          The running number on the menu.

   %c
          Remailer capabilities.

   %s
          The remailer's short name.

   %a
          The remailer's e-mail address.

148. $mixmaster

   Type: path

   Default: "mixmaster"

   Availability: Mixmaster

   This variable contains the path to the Mixmaster binary on your
   system. It is used with various sets of parameters to gather the list
   of known remailers, and to finally send a message through the
   mixmaster chain.

149. $move

   Type: quadoption

   Default: ask-no

   Controls whether or not Mutt-ng will move read messages from your
   spool mailbox to your ``$$mmbbooxx'' mailbox, or as a result of a
   ``mmbbooxx--hhooookk'' command.

150. $msgid_format

   Type: string

   Default: "%Y%m%d%h%M%s.G%P%p"

   This is the format for the ``local part'' of the Message-ID: header
   field generated by Mutt-ng. If this variable is empty, no Message-ID:
   headers will be generated. The '%' character marks that certain data
   will be added to the string, similar to printf(3). The following
   characters are allowed:

   %d
          the current day of month

   %h
          the current hour

   %m
          the current month

   %M
          the current minute

   %O
          the current UNIX timestamp (octal)

   %p
          the process ID

   %P
          the current Message-ID prefix (a character rotating with every
          Message-ID being generated)

   %r
          a random integer value (decimal)

   %R
          a random integer value (hexadecimal)

   %s
          the current second

   %T
          the current UNIX timestamp (decimal)

   %X
          the current UNIX timestamp (hexadecimal)

   %Y
          the current year (Y2K compliant)

   %%
          the '%' character

   _N_o_t_e_: Please only change this setting if you know what you are doing.
   Also make sure to consult RFC2822 to produce technically _v_a_l_i_d
   strings.

151. $muttng_bindir

   Type: system property

   Value: /opt/freebsd4/mutt-ng/bin

   _T_h_i_s_ _i_s_ _a_ _r_e_a_d_-_o_n_l_y_ _s_y_s_t_e_m_ _p_r_o_p_e_r_t_y_ _a_n_d_ _s_p_e_c_i_f_i_e_s_ _t_h_e_ _d_i_r_e_c_t_o_r_y
   _c_o_n_t_a_i_n_i_n_g_ _t_h_e_ _m_u_t_t_n_g_ _b_i_n_a_r_y_.

152. $muttng_docdir

   Type: system property

   Value: /opt/freebsd4/mutt-ng/doc/muttng

   _T_h_i_s_ _i_s_ _a_ _r_e_a_d_-_o_n_l_y_ _s_y_s_t_e_m_ _p_r_o_p_e_r_t_y_ _a_n_d_ _s_p_e_c_i_f_i_e_s_ _t_h_e_ _d_i_r_e_c_t_o_r_y
   _c_o_n_t_a_i_n_i_n_g_ _t_h_e_ _m_u_t_t_n_g_ _d_o_c_u_m_e_n_t_a_t_i_o_n_.

153. $muttng_folder_name

   Type: system property

   Value:

   _T_h_i_s_ _i_s_ _a_ _r_e_a_d_-_o_n_l_y_ _s_y_s_t_e_m_ _p_r_o_p_e_r_t_y_ _a_n_d_,_ _a_t_ _r_u_n_t_i_m_e_,_ _s_p_e_c_i_f_i_e_s_ _t_h_e
   _a_c_t_u_a_l_ _n_a_m_e_ _o_f_ _t_h_e_ _f_o_l_d_e_r_ _a_s_ _f_a_r_ _a_s_ _i_t_ _c_o_u_l_d_ _b_e_ _d_e_t_e_c_t_e_d_.

   For detection, $folder is first taken into account and simply stripped
   to form the result when a match is found. For example, with $folder
   being imap://host and the folder is imap://host/INBOX/foo,
   $muttng_folder_name will be just INBOX/foo.)

   Second, if the initial portion of a name is not $folder, the result
   will be everything after the last ``/''.

   Third and last, the result will be just the name if neither $folder
   nor a ``/'' were found in the name.

154. $muttng_folder_path

   Type: system property

   Value:

   _T_h_i_s_ _i_s_ _a_ _r_e_a_d_-_o_n_l_y_ _s_y_s_t_e_m_ _p_r_o_p_e_r_t_y_ _a_n_d_,_ _a_t_ _r_u_n_t_i_m_e_,_ _s_p_e_c_i_f_i_e_s_ _t_h_e
   _f_u_l_l_ _p_a_t_h_ _o_r_ _U_R_I_ _o_f_ _t_h_e_ _f_o_l_d_e_r_ _c_u_r_r_e_n_t_l_y_ _o_p_e_n_ _(_i_f_ _a_n_y_)_.

155. $muttng_hcache_backend

   Type: system property

   Value: qdbm

   _T_h_i_s_ _i_s_ _a_ _r_e_a_d_-_o_n_l_y_ _s_y_s_t_e_m_ _p_r_o_p_e_r_t_y_ _a_n_d_ _s_p_e_c_i_f_i_e_s_ _t_h_e_ _h_e_a_d_e_r
   _c_h_a_c_h_i_n_g_'_s_ _d_a_t_a_b_a_s_e_ _b_a_c_k_e_n_d_.

156. $muttng_pwd

   Type: system property

   Value:

   _T_h_i_s_ _i_s_ _a_ _r_e_a_d_-_o_n_l_y_ _s_y_s_t_e_m_ _p_r_o_p_e_r_t_y_ _a_n_d_,_ _a_t_ _r_u_n_t_i_m_e_,_ _s_p_e_c_i_f_i_e_s_ _t_h_e
   _c_u_r_r_e_n_t_ _w_o_r_k_i_n_g_ _d_i_r_e_c_t_o_r_y_ _o_f_ _t_h_e_ _m_u_t_t_n_g_ _b_i_n_a_r_y_.

157. $muttng_revision

   Type: system property

   Value: 790

   _T_h_i_s_ _i_s_ _a_ _r_e_a_d_-_o_n_l_y_ _s_y_s_t_e_m_ _p_r_o_p_e_r_t_y_ _a_n_d_ _s_p_e_c_i_f_i_e_s_ _m_u_t_t_n_g_'_s_ _s_u_b_v_e_r_s_i_o_n
   _r_e_v_i_s_i_o_n_ _s_t_r_i_n_g_.

158. $muttng_sysconfdir

   Type: system property

   Value: /opt/freebsd4/mutt-ng/etc

   _T_h_i_s_ _i_s_ _a_ _r_e_a_d_-_o_n_l_y_ _s_y_s_t_e_m_ _p_r_o_p_e_r_t_y_ _a_n_d_ _s_p_e_c_i_f_i_e_s_ _t_h_e_ _d_i_r_e_c_t_o_r_y
   _c_o_n_t_a_i_n_i_n_g_ _t_h_e_ _m_u_t_t_n_g_ _s_y_s_t_e_m_-_w_i_d_e_ _c_o_n_f_i_g_u_r_a_t_i_o_n_.

159. $muttng_version

   Type: system property

   Value: devel

   _T_h_i_s_ _i_s_ _a_ _r_e_a_d_-_o_n_l_y_ _s_y_s_t_e_m_ _p_r_o_p_e_r_t_y_ _a_n_d_ _s_p_e_c_i_f_i_e_s_ _m_u_t_t_n_g_'_s_ _v_e_r_s_i_o_n
   _s_t_r_i_n_g_.

160. $narrow_tree

   Type: boolean

   Default: no

   This variable, when _s_e_t, makes the thread tree narrower, allowing
   deeper threads to fit on the screen.

161. $net_inc

   Type: number

   Default: 10

   Operations that expect to transfer a large amount of data over the
   network will update their progress every _n_e_t___i_n_c kilobytes. If set to
   0, no progress messages will be displayed.

   See also ``$$rreeaadd__iinncc'' and ``$$wwrriittee__iinncc''.

162. $nntp_ask_followup_to

   Type: boolean

   Default: no

   Availability: NNTP

   If _s_e_t, Mutt-ng will prompt you for the Followup-To: header field
   before editing the body of an outgoing news article.

163. $nntp_ask_x_comment_to

   Type: boolean

   Default: no

   Availability: NNTP

   If _s_e_t, Mutt-ng will prompt you for the X-Comment-To: header field
   before editing the body of an outgoing news article.

164. $nntp_cache_dir

   Type: path

   Default: "~/.muttng"

   Availability: NNTP

   This variable points to directory where Mutt-ng will cache news
   article headers. If _u_n_s_e_t, headers will not be saved at all and will
   be reloaded each time when you enter a newsgroup.

   As for the header caching in connection with IMAP and/or Maildir, this
   drastically increases speed and lowers traffic.

165. $nntp_catchup

   Type: quadoption

   Default: ask-yes

   Availability: NNTP

   If this variable is _s_e_t, Mutt-ng will mark all articles in a newsgroup
   as read when you leaving it.

166. $nntp_context

   Type: number

   Default: 1000

   Availability: NNTP

   This variable controls how many news articles to cache per newsgroup
   (if caching is enabled, see $$nnnnttpp__ccaacchhee__ddiirr) and how many news
   articles to show in the ``index'' menu.

   If there're more articles than defined with $$nnnnttpp__ccoonntteexxtt, all older
   ones will be removed/not shown in the index.

167. $nntp_followup_to_poster

   Type: quadoption

   Default: ask-yes

   Availability: NNTP

   If this variable is _s_e_t and the keyword "poster" is present in the
   Followup-To: header field, a follow-up to the newsgroup is not
   permitted. The message will be mailed to the submitter of the message
   via mail.

168. $nntp_group_index_format

   Type: string

   Default: "%4C %M%N %5s %-45.45f %d"

   Availability: NNTP

   This variable allows you to customize the newsgroup browser display to
   your personal taste. This string is similar to ``iinnddeexx__ffoorrmmaatt'', but
   has its own set of printf(3)-like sequences:

%C      current newsgroup number
%d      description of newsgroup (retrieved from server)
%f      newsgroup name
%M      ``-'' if newsgroup not allowed for direct post (moderated for example)
%N      ``N'' if newsgroup is new, ``u'' if unsubscribed, blank otherwise
%n      number of new articles in newsgroup
%s      number of unread articles in newsgroup
%>X     right justify the rest of the string and pad with character "X"
%|X     pad to the end of the line with character "X"

169. $nntp_host

   Type: string

   Default: ""

   Availability: NNTP

   This variable specifies the name (or address) of the NNTP server to be
   used.

   It defaults to the value specified via the environment variable
   $NNTPSERVER or contained in the file /etc/nntpserver.

   You can also specify a username and an alternative port for each
   newsserver, e.g.

   [nntp[s]://][username[:password]@]newsserver[:port]

   _N_o_t_e_: Using a password as shown and stored in a configuration file
   presents a security risk since the superuser of your machine may read
   it regardless of the file's permissions.

170. $nntp_inews

   Type: path

   Default: ""

   Availability: NNTP

   If _s_e_t, specifies the program and arguments used to deliver news
   posted by Mutt-ng. Otherwise, Mutt-ng posts article using current
   connection. The following printf(3)-style sequence is understood:

%s      newsserver name

   Example: set inews="/usr/local/bin/inews -hS"

171. $nntp_load_description

   Type: boolean

   Default: yes

   Availability: NNTP

   This variable controls whether or not descriptions for newsgroups are
   to be loaded when subscribing to a newsgroup.

172. $nntp_mail_check

   Type: number

   Default: 60

   Availability: NNTP

   The time in seconds until any operations on a newsgroup except posting
   a new article will cause a recheck for new news. If set to 0, Mutt-ng
   will recheck on each operation in index (stepping, read article,
   etc.).

173. $nntp_mime_subject

   Type: boolean

   Default: yes

   Availability: NNTP

   If _u_n_s_e_t, an 8-bit ``Subject:'' header field in a news article will
   not be encoded according to RFC2047.

   _N_o_t_e_: Only change this setting if you know what you are doing.

174. $nntp_newsrc

   Type: path

   Default: "~/.newsrc"

   Availability: NNTP

   This file contains information about subscribed newsgroup and articles
   read so far.

   To ease the use of multiple news servers, the following
   printf(3)-style sequence is understood:

%s      newsserver name

175. $nntp_pass

   Type: string

   Default: ""

   Availability: NNTP

   Your password for NNTP account.

   _N_o_t_e_: Storing passwords in a configuration file presents a security
   risk since the superuser of your machine may read it regardless of the
   file's permissions.

176. $nntp_post_moderated

   Type: quadoption

   Default: ask-yes

   Availability: NNTP

   If set to _y_e_s, Mutt-ng will post articles to newsgroup that have not
   permissions to post (e.g. moderated).

   _N_o_t_e_: if the newsserver does not support posting to that newsgroup or
   a group is totally read-only, that posting will not have any effect.

177. $nntp_reconnect

   Type: quadoption

   Default: ask-yes

   Availability: NNTP

   Controls whether or not Mutt-ng will try to reconnect to a newsserver
   when the was connection lost.

178. $nntp_save_unsubscribed

   Type: boolean

   Default: no

   Availability: NNTP

   When _s_e_t, info about unsubscribed newsgroups will be saved into the
   ``newsrc'' file and into the news cache.

179. $nntp_show_new_news

   Type: boolean

   Default: yes

   Availability: NNTP

   If _s_e_t, the newsserver will be asked for new newsgroups on entering
   the browser. Otherwise, it will be done only once for a newsserver.
   Also controls whether or not the number of new articles of subscribed
   newsgroups will be checked.

180. $nntp_show_only_unread

   Type: boolean

   Default: no

   Availability: NNTP

   If _s_e_t, only subscribed newsgroups that contain unread articles will
   be displayed in the newsgroup browser.

181. $nntp_user

   Type: string

   Default: ""

   Availability: NNTP

   Your login name on the NNTP server. If _u_n_s_e_t and the server requires
   authentification, Mutt-ng will prompt you for your account name.

182. $nntp_x_comment_to

   Type: boolean

   Default: no

   Availability: NNTP

   If _s_e_t, Mutt-ng will add a ``X-Comment-To:'' header field (that
   contains full name of the original article author) to articles that
   you followup to.

183. $operating_system

   Type: string

   Default: ""

   This specifies the operating system name for the User-Agent: header
   field. If this is _u_n_s_e_t, it will be set to the operating system name
   that uname(2) returns. If uname(2) fails, ``UNIX'' will be used.

   It may, for example, look as: ``mutt-ng 1.5.9i (Linux)''.

184. $pager

   Type: path

   Default: "builtin"

   This variable specifies which pager you would like to use to view
   messages. ``builtin'' means to use the builtin pager, otherwise this
   variable should specify the pathname of the external pager you would
   like to use.

   Using an external pager may have some disadvantages: Additional
   keystrokes are necessary because you can't call Mutt-ng functions
   directly from the pager, and screen resizes cause lines longer than
   the screen width to be badly formatted in the help menu.

185. $pager_context

   Type: number

   Default: 0

   This variable controls the number of lines of context that are given
   when displaying the next or previous page in the internal pager. By
   default, Mutt-ng will display the line after the last one on the
   screen at the top of the next page (0 lines of context).

186. $pager_format

   Type: string

   Default: "-%Z- %C/%m: %-20.20n %s"

   This variable controls the format of the one-line message ``status''
   displayed before each message in either the internal or an external
   pager. The valid sequences are listed in the ``$$iinnddeexx__ffoorrmmaatt''
   section.

187. $pager_index_lines

   Type: number

   Default: 0

   Determines the number of lines of a mini-index which is shown when in
   the pager. The current message, unless near the top or bottom of the
   folder, will be roughly one third of the way down this mini-index,
   giving the reader the context of a few messages before and after the
   message. This is useful, for example, to determine how many messages
   remain to be read in the current thread. One of the lines is reserved
   for the status bar from the index, so a _p_a_g_e_r___i_n_d_e_x___l_i_n_e_s of 6 will
   only show 5 lines of the actual index. A value of 0 results in no
   index being shown. If the number of messages in the current folder is
   less than _p_a_g_e_r___i_n_d_e_x___l_i_n_e_s, then the index will only use as many
   lines as it needs.

188. $pager_stop

   Type: boolean

   Default: no

   When _s_e_t, the internal-pager will _n_o_t move to the next message when
   you are at the end of a message and invoke the _n_e_x_t_-_p_a_g_e function.

189. $pgp_auto_decode

   Type: boolean

   Default: no

   If _s_e_t, Mutt-ng will automatically attempt to decrypt traditional PGP
   messages whenever the user performs an operation which ordinarily
   would result in the contents of the message being operated on. For
   example, if the user displays a pgp-traditional message which has not
   been manually checked with the check-traditional-pgp function, Mutt-ng
   will automatically check the message for traditional pgp.

190. $pgp_autoinline

   Type: boolean

   Default: no

   This option controls whether Mutt-ng generates old-style inline
   (traditional) PGP encrypted or signed messages under certain
   circumstances. This can be overridden by use of the _p_g_p_-_m_e_n_u, when
   inline is not required.

   Note that Mutt-ng might automatically use PGP/MIME for messages which
   consist of more than a single MIME part. Mutt-ng can be configured to
   ask before sending PGP/MIME messages when inline (traditional) would
   not work. See also: ``$$ppggpp__mmiimmee__aauuttoo''.

   Also note that using the old-style PGP message format is
   _s_t_r_o_n_g_l_y_d_e_p_r_e_c_a_t_e_d. (PGP only)

191. $pgp_check_exit

   Type: boolean

   Default: yes

   If _s_e_t, Mutt-ng will check the exit code of the PGP subprocess when
   signing or encrypting. A non-zero exit code means that the subprocess
   failed. (PGP only)

192. $pgp_clearsign_command

   Type: string

   Default: ""

   This format is used to create a old-style ``clearsigned'' PGP message.

   Note that the use of this format is _s_t_r_o_n_g_l_y_d_e_p_r_e_c_a_t_e_d. (PGP only)

193. $pgp_decode_command

   Type: string

   Default: ""

   This format strings specifies a command which is used to decode
   application/pgp attachments.

   The PGP command formats have their own set of printf(3)-like
   sequences:

   %p
          Expands to PGPPASSFD=0 when a pass phrase is needed, to an
          empty string otherwise. Note: This may be used with a %?
          construct.

   %f
          Expands to the name of a file containing a message.

   %s
          Expands to the name of a file containing the signature part of
          a multipart/signed attachment when verifying it.

   %a
          The value of $$ppggpp__ssiiggnn__aass.

   %r
          One or more key IDs.

   For examples on how to configure these formats for the various
   versions of PGP which are floating around, see the pgp*.rc and gpg.rc
   files in the samples/ subdirectory which has been installed on your
   system alongside the documentation. (PGP only)

194. $pgp_decrypt_command

   Type: string

   Default: ""

   This command is used to decrypt a PGP encrypted message. (PGP only)

195. $pgp_encrypt_only_command

   Type: string

   Default: ""

   This command is used to encrypt a body part without signing it. (PGP
   only)

196. $pgp_encrypt_sign_command

   Type: string

   Default: ""

   This command is used to both sign and encrypt a body part. (PGP only)

197. $pgp_entry_format

   Type: string

   Default: "%4n %t%f %4l/0x%k %-4a %2c %u"

   This variable allows you to customize the PGP key selection menu to
   your personal taste. This string is similar to ``$$iinnddeexx__ffoorrmmaatt'', but
   has its own set of printf(3)-like sequences:

   %n
          number

   %k
          key id

   %u
          user id

   %a
          algorithm

   %l
          key length

   %f
          flags

   %c
          capabilities

   %t
          trust/validity of the key-uid association

   %[<s>]
          date of the key where <s> is an strftime(3) expression

   (PGP only)

198. $pgp_export_command

   Type: string

   Default: ""

   This command is used to export a public key from the user's key ring.
   (PGP only)

199. $pgp_getkeys_command

   Type: string

   Default: ""

   This command is invoked whenever Mutt-ng will need public key
   information. %r is the only printf(3)-like sequence used with this
   format. (PGP only)

200. $pgp_good_sign

   Type: regular expression

   Default: ""

   If you assign a text to this variable, then a PGP signature is only
   considered verified if the output from $$ppggpp__vveerriiffyy__ccoommmmaanndd contains
   the text. Use this variable if the exit code from the command is 0
   even for bad signatures. (PGP only)

201. $pgp_ignore_subkeys

   Type: boolean

   Default: yes

   Setting this variable will cause Mutt-ng to ignore OpenPGP subkeys.
   Instead, the principal key will inherit the subkeys' capabilities.
   _U_n_s_e_t this if you want to play interesting key selection games. (PGP
   only)

202. $pgp_import_command

   Type: string

   Default: ""

   This command is used to import a key from a message into the user's
   public key ring. (PGP only)

203. $pgp_list_pubring_command

   Type: string

   Default: ""

   This command is used to list the public key ring's contents. The
   output format must be analogous to the one used by gpg --list-keys
   --with-colons.

   This format is also generated by the pgpring utility which comes with
   Mutt-ng. (PGP only)

204. $pgp_list_secring_command

   Type: string

   Default: ""

   This command is used to list the secret key ring's contents. The
   output format must be analogous to the one used by gpg --list-keys
   --with-colons.

   This format is also generated by the pgpring utility which comes with
   Mutt-ng. (PGP only)

205. $pgp_long_ids

   Type: boolean

   Default: no

   If _s_e_t, use 64 bit PGP key IDs. _U_n_s_e_t uses the normal 32 bit Key IDs.
   (PGP only)

206. $pgp_mime_auto

   Type: quadoption

   Default: ask-yes

   This option controls whether Mutt-ng will prompt you for automatically
   sending a (signed/encrypted) message using PGP/MIME when inline
   (traditional) fails (for any reason).

   Also note that using the old-style PGP message format is
   _s_t_r_o_n_g_l_y_d_e_p_r_e_c_a_t_e_d. (PGP only)

207. $pgp_replyinline

   Type: boolean

   Default: no

   Setting this variable will cause Mutt-ng to always attempt to create
   an inline (traditional) message when replying to a message which is
   PGP encrypted/signed inline. This can be overridden by use of the
   _p_g_p_-_m_e_n_u, when inline is not required. This option does not
   automatically detect if the (replied-to) message is inline; instead it
   relies on Mutt-ng internals for previously checked/flagged messages.

   Note that Mutt-ng might automatically use PGP/MIME for messages which
   consist of more than a single MIME part. Mutt-ng can be configured to
   ask before sending PGP/MIME messages when inline (traditional) would
   not work. See also: ``$$ppggpp__mmiimmee__aauuttoo''.

   Also note that using the old-style PGP message format is
   _s_t_r_o_n_g_l_y_d_e_p_r_e_c_a_t_e_d. (PGP only)

208. $pgp_retainable_sigs

   Type: boolean

   Default: no

   If _s_e_t, signed and encrypted messages will consist of nested
   multipart/signed and multipart/encrypted body parts.

   This is useful for applications like encrypted and signed mailing
   lists, where the outer layer (multipart/encrypted) can be easily
   removed, while the inner multipart/signed part is retained. (PGP only)

209. $pgp_show_unusable

   Type: boolean

   Default: yes

   If _s_e_t, Mutt-ng will display non-usable keys on the PGP key selection
   menu. This includes keys which have been revoked, have expired, or
   have been marked as ``disabled'' by the user. (PGP only)

210. $pgp_sign_as

   Type: string

   Default: ""

   If you have more than one key pair, this option allows you to specify
   which of your private keys to use. It is recommended that you use the
   keyid form to specify your key (e.g., ``0x00112233''). (PGP only)

211. $pgp_sign_command

   Type: string

   Default: ""

   This command is used to create the detached PGP signature for a
   multipart/signed PGP/MIME body part. (PGP only)

212. $pgp_sort_keys

   Type: sort order

   Default: address

   Specifies how the entries in the ``pgp keys'' menu are sorted. The
   following are legal values:

   address
          sort alphabetically by user id

   keyid
          sort alphabetically by key id

   date
          sort by key creation date

   trust
          sort by the trust of the key

   If you prefer reverse order of the above values, prefix it with
   ``reverse-''. (PGP only)

213. $pgp_strict_enc

   Type: boolean

   Default: yes

   If _s_e_t, Mutt-ng will automatically encode PGP/MIME signed messages as
   quoted-printable. Please note that unsetting this variable may lead to
   problems with non-verifyable PGP signatures, so only change this if
   you know what you are doing. (PGP only)

214. $pgp_timeout

   Type: number

   Default: 300

   The number of seconds after which a cached passphrase will expire if
   not used. Default: 300. (PGP only)

215. $pgp_use_gpg_agent

   Type: boolean

   Default: no

   If _s_e_t, Mutt-ng will use a possibly-running gpg-agent process. (PGP
   only)

216. $pgp_verify_command

   Type: string

   Default: ""

   This command is used to verify PGP signatures. (PGP only)

217. $pgp_verify_key_command

   Type: string

   Default: ""

   This command is used to verify key information from the key selection
   menu. (PGP only)

218. $pipe_decode

   Type: boolean

   Default: no

   Used in connection with the _p_i_p_e_-_m_e_s_s_a_g_e command. When _u_n_s_e_t, Mutt-ng
   will pipe the messages without any preprocessing. When _s_e_t, Mutt-ng
   will weed headers and will attempt to PGP/MIME decode the messages
   first.

219. $pipe_sep

   Type: string

   Default: "\n"

   The separator to add between messages when piping a list of tagged
   messages to an external Unix command.

220. $pipe_split

   Type: boolean

   Default: no

   Used in connection with the _p_i_p_e_-_m_e_s_s_a_g_e command and the ``tag-
   prefix'' or ``tag-prefix-cond'' operators. If this variable is _u_n_s_e_t,
   when piping a list of tagged messages Mutt-ng will concatenate the
   messages and will pipe them as a single folder. When _s_e_t, Mutt-ng will
   pipe the messages one by one. In both cases the messages are piped in
   the current sorted order, and the ``$$ppiippee__sseepp'' separator is added
   after each message.

221. $pop_auth_try_all

   Type: boolean

   Default: yes

   Availability: POP

   If _s_e_t, Mutt-ng will try all available methods. When _u_n_s_e_t, Mutt-ng
   will only fall back to other authentication methods if the previous
   methods are unavailable. If a method is available but authentication
   fails, Mutt-ng will not connect to the POP server.

222. $pop_authenticators

   Type: string

   Default: ""

   Availability: POP

   This is a colon-delimited list of authentication methods Mutt-ng may
   attempt to use to log in to an POP server, in the order Mutt-ng should
   try them. Authentication methods are either ``user'', ``apop'' or any
   SASL mechanism, eg ``digest-md5'', ``gssapi'' or ``cram-md5''.

   This parameter is case-insensitive. If this parameter is _u_n_s_e_t (the
   default) Mutt-ng will try all available methods, in order from
   most-secure to least-secure.

   Example: set pop_authenticators="digest-md5:apop:user"

223. $pop_delete

   Type: quadoption

   Default: ask-no

   Availability: POP

   If _s_e_t, Mutt-ng will delete successfully downloaded messages from the
   POP server when using the ``fetch-mail'' function. When _u_n_s_e_t, Mutt-ng
   will download messages but also leave them on the POP server.

224. $pop_host

   Type: string

   Default: ""

   Availability: POP

   The name of your POP server for the ``fetch-mail'' function. You can
   also specify an alternative port, username and password, i.e.:

   [pop[s]://][username[:password]@]popserver[:port]

   _N_o_t_e_: Storing passwords in a configuration file presents a security
   risk since the superuser of your machine may read it regardless of the
   file's permissions.

225. $pop_last

   Type: boolean

   Default: no

   Availability: POP

   If this variable is _s_e_t, Mutt-ng will try to use the ``LAST'' POP
   command for retrieving only unread messages from the POP server when
   using the ``fetch-mail'' function.

226. $pop_mail_check

   Type: number

   Default: 60

   Availability: POP

   This variable configures how often (in seconds) Mutt-ng should look
   for new mail.

227. $pop_pass

   Type: string

   Default: ""

   Availability: POP

   Specifies the password for your POP account. If _u_n_s_e_t, Mutt-ng will
   prompt you for your password when you open POP mailbox.

   _N_o_t_e_: Storing passwords in a configuration file presents a security
   risk since the superuser of your machine may read it regardless of the
   file's permissions.

228. $pop_reconnect

   Type: quadoption

   Default: ask-yes

   Availability: POP

   Controls whether or not Mutt-ng will try to reconnect to a POP server
   if the connection is lost.

229. $pop_user

   Type: string

   Default: ""

   Availability: POP

   Your login name on the POP server.

   This variable defaults to your user name on the local machine.

230. $post_indent_string

   Type: string

   Default: ""

   Similar to the ``$$aattttrriibbuuttiioonn'' variable, Mutt-ng will append this
   string after the inclusion of a message which is being replied to.

231. $postpone

   Type: quadoption

   Default: ask-yes

   Controls whether or not messages are saved in the ``$$ppoossttppoonneedd''
   mailbox when you elect not to send immediately.

232. $postponed

   Type: path

   Default: "~/postponed"

   Mutt-ng allows you to indefinitely ``ppoossttppoonnee sending a message''
   which you are editing. When you choose to postpone a message, Mutt-ng
   saves it in the mailbox specified by this variable. Also see the
   ``$$ppoossttppoonnee'' variable.

233. $preconnect

   Type: string

   Default: ""

   If _s_e_t, a shell command to be executed if Mutt-ng fails to establish a
   connection to the server. This is useful for setting up secure
   connections, e.g. with ssh(1). If the command returns a nonzero
   status, Mutt-ng gives up opening the server. Example:

   preconnect="ssh -f -q -L 1234:mailhost.net:143 mailhost.net sleep 20 <
   /dev/null > /dev/null"

   Mailbox ``foo'' on mailhost.net can now be reached as
   ``{localhost:1234}foo''.

   _N_o_t_e_: For this example to work, you must be able to log in to the
   remote machine without having to enter a password.

234. $print

   Type: quadoption

   Default: ask-no

   Controls whether or not Mutt-ng really prints messages. This is set to
   _a_s_k_-_n_o by default, because some people accidentally hit ``p'' often.

235. $print_command

   Type: path

   Default: "lpr"

   This specifies the command pipe that should be used to print messages.

236. $print_decode

   Type: boolean

   Default: yes

   Used in connection with the print-message command. If this option is
   _s_e_t, the message is decoded before it is passed to the external
   command specified by $$pprriinntt__ccoommmmaanndd. If this option is _u_n_s_e_t, no
   processing will be applied to the message when printing it. The latter
   setting may be useful if you are using some advanced printer filter
   which is able to properly format e-mail messages for printing.

237. $print_split

   Type: boolean

   Default: no

   Used in connection with the print-message command. If this option is
   _s_e_t, the command specified by $$pprriinntt__ccoommmmaanndd is executed once for each
   message which is to be printed. If this option is _u_n_s_e_t, the command
   specified by $$pprriinntt__ccoommmmaanndd is executed only once, and all the
   messages are concatenated, with a form feed as the message separator.

   Those who use the enscript(1) program's mail-printing mode will most
   likely want to set this option.

238. $prompt_after

   Type: boolean

   Default: yes

   If you use an _e_x_t_e_r_n_a_l ``$$ppaaggeerr'', setting this variable will cause
   Mutt-ng to prompt you for a command when the pager exits rather than
   returning to the index menu. If _u_n_s_e_t, Mutt-ng will return to the
   index menu when the external pager exits.

239. $query_command

   Type: path

   Default: ""

   This specifies the command that Mutt-ng will use to make external
   address queries. The string should contain a %s, which will be
   substituted with the query string the user types. See ``qquueerryy'' for
   more information.

240. $quit

   Type: quadoption

   Default: yes

   This variable controls whether ``quit'' and ``exit'' actually quit
   from Mutt-ng. If it set to _y_e_s, they do quit, if it is set to _n_o, they
   have no effect, and if it is set to _a_s_k_-_y_e_s or _a_s_k_-_n_o, you are
   prompted for confirmation when you try to quit.

241. $quote_empty

   Type: boolean

   Default: yes

   Controls whether or not empty lines will be quoted using
   ``iinnddeenntt__ssttrriinngg''.

242. $quote_quoted

   Type: boolean

   Default: no

   Controls how quoted lines will be quoted. If _s_e_t, one quote character
   will be added to the end of existing prefix. Otherwise, quoted lines
   will be prepended by ``iinnddeenntt__ssttrriinngg''.

243. $quote_regexp

   Type: regular expression

   Default: "^([ \t]*[|>:}#])+"

   A regular expression used in the internal-pager to determine quoted
   sections of text in the body of a message.

   _N_o_t_e_: In order to use the _q_u_o_t_e_d_x patterns in the internal pager, you
   need to set this to a regular expression that matches _e_x_a_c_t_l_y the
   quote characters at the beginning of quoted lines.

244. $read_inc

   Type: number

   Default: 10

   If set to a value greater than 0, Mutt-ng will display which message
   it is currently on when reading a mailbox. The message is printed
   after _r_e_a_d___i_n_c messages have been read (e.g., if set to 25, Mutt-ng
   will print a message when it reads message 25, and then again when it
   gets to message 50). This variable is meant to indicate progress when
   reading large mailboxes which may take some time. When set to 0, only
   a single message will appear before the reading the mailbox.

   Also see the ``$$wwrriittee__iinncc'' variable.

245. $read_only

   Type: boolean

   Default: no

   If set, all folders are opened in read-only mode.

246. $realname

   Type: string

   Default: ""

   This variable specifies what ``real'' or ``personal'' name should be
   used when sending messages.

   By default, this is the GECOS field from /etc/passwd.

   _N_o_t_e_: This variable will _n_o_t be used when the user has set a real name
   in the $$ffrroomm variable.

247. $recall

   Type: quadoption

   Default: ask-yes

   Controls whether or not Mutt-ng recalls postponed messages when
   composing a new message. Also see ``$$ppoossttppoonneedd''.

   Setting this variable to _y_e_s is not generally useful, and thus not
   recommended.

248. $record

   Type: path

   Default: ""

   This specifies the file into which your outgoing messages should be
   appended. (This is meant as the primary method for saving a copy of
   your messages, but another way to do this is using the ``mmyy__hhddrr''
   command to create a Bcc: header field with your email address in it.)

   The value of $$rreeccoorrdd is overridden by the ``$$ffoorrccee__nnaammee'' and
   ``$$ssaavvee__nnaammee'' variables, and the ``  ffcccc--hhooookk'' command.

249. $reply_regexp

   Type: regular expression

   Default: "^(re([\[0-9\]+])*|aw):[ \t]*"

   A regular expression used to recognize reply messages when threading
   and replying. The default value corresponds to the English ``Re:'' and
   the German ``Aw:''.

250. $reply_self

   Type: boolean

   Default: no

   If _u_n_s_e_t and you are replying to a message sent by you, Mutt-ng will
   assume that you want to reply to the recipients of that message rather
   than to yourself.

251. $reply_to

   Type: quadoption

   Default: ask-yes

   If _s_e_t, when replying to a message, Mutt-ng will use the address
   listed in the ``Reply-To:'' header field as the recipient of the
   reply. If _u_n_s_e_t, it will use the address in the ``From:'' header field
   instead.

   This option is useful for reading a mailing list that sets the
   ``Reply-To:'' header field to the list address and you want to send a
   private message to the author of a message.

252. $resolve

   Type: boolean

   Default: yes

   When set, the cursor will be automatically advanced to the next
   (possibly undeleted) message whenever a command that modifies the
   current message is executed.

253. $reverse_alias

   Type: boolean

   Default: no

   This variable controls whether or not Mutt-ng will display the
   ``personal'' name from your aliases in the index menu if it finds an
   alias that matches the message's sender. For example, if you have the
   following alias:

   alias juser abd30425@somewhere.net (Joe User)

   and then you receive mail which contains the following header:

   From: abd30425@somewhere.net

   It would be displayed in the index menu as ``Joe User'' instead of
   ``abd30425@somewhere.net.'' This is useful when the person's e-mail
   address is not human friendly (like CompuServe addresses).

254. $reverse_name

   Type: boolean

   Default: no

   It may sometimes arrive that you receive mail to a certain machine,
   move the messages to another machine, and reply to some the messages
   from there. If this variable is _s_e_t, the default From: line of the
   reply messages is built using the address where you received the
   messages you are replying to _i_f that address matches your alternates.
   If the variable is _u_n_s_e_t, or the address that would be used doesn't
   match your alternates, the From: line will use your address on the
   current machine.

255. $reverse_realname

   Type: boolean

   Default: yes

   This variable fine-tunes the behaviour of the rreevveerrssee__nnaammee feature.
   When it is _s_e_t, Mutt-ng will use the address from incoming messages
   as-is, possibly including eventual real names. When it is _u_n_s_e_t,
   Mutt-ng will override any such real names with the setting of the
   rreeaallnnaammee variable.

256. $rfc2047_parameters

   Type: boolean

   Default: no

   When this variable is _s_e_t, Mutt-ng will decode RFC-2047-encoded MIME
   parameters. You want to set this variable when Mutt-ng suggests you to
   save attachments to files named like this:

   =?iso-8859-1?Q?file=5F=E4=5F991116=2Ezip?=

   When this variable is _s_e_t interactively, the change doesn't have the
   desired effect before you have changed folders.

   Note that this use of RFC 2047's encoding is explicitly, prohibited by
   the standard, but nevertheless encountered in the wild.

   Also note that setting this parameter will _n_o_t have the effect that
   Mutt-ng _g_e_n_e_r_a_t_e_s this kind of encoding. Instead, Mutt-ng will
   unconditionally use the encoding specified in RFC 2231.

257. $save_address

   Type: boolean

   Default: no

   If _s_e_t, Mutt-ng will take the sender's full address when choosing a
   default folder for saving a mail. If ``$$ssaavvee__nnaammee'' or ``$$ffoorrccee__nnaammee''
   is _s_e_t too, the selection of the fcc folder will be changed as well.

258. $save_empty

   Type: boolean

   Default: yes

   When _u_n_s_e_t, mailboxes which contain no saved messages will be removed
   when closed (the exception is ``$$ssppoooollffiillee'' which is never removed).
   If _s_e_t, mailboxes are never removed.

   _N_o_t_e_: This only applies to mbox and MMDF folders, Mutt-ng does not
   delete MH and Maildir directories.

259. $save_name

   Type: boolean

   Default: no

   This variable controls how copies of outgoing messages are saved. When
   set, a check is made to see if a mailbox specified by the recipient
   address exists (this is done by searching for a mailbox in the
   ``$$ffoollddeerr'' directory with the _u_s_e_r_n_a_m_e part of the recipient
   address). If the mailbox exists, the outgoing message will be saved to
   that mailbox, otherwise the message is saved to the ``$$rreeccoorrdd''
   mailbox.

   Also see the ``$$ffoorrccee__nnaammee'' variable.

260. $score

   Type: boolean

   Default: yes

   When this variable is _u_n_s_e_t, scoring is turned off. This can be useful
   to selectively disable scoring for certain folders when the
   ``$$ssccoorree__tthhrreesshhoolldd__ddeelleettee'' variable and friends are used.

261. $score_threshold_delete

   Type: number

   Default: -1

   Messages which have been assigned a score equal to or lower than the
   value of this variable are automatically marked for deletion by
   Mutt-ng. Since Mutt-ng scores are always greater than or equal to
   zero, the default setting of this variable will never mark a message
   for deletion.

262. $score_threshold_flag

   Type: number

   Default: 9999

   Messages which have been assigned a score greater than or equal to
   this variable's value are automatically marked ``flagged''.

263. $score_threshold_read

   Type: number

   Default: -1

   Messages which have been assigned a score equal to or lower than the
   value of this variable are automatically marked as read by Mutt-ng.
   Since Mutt-ng scores are always greater than or equal to zero, the
   default setting of this variable will never mark a message read.

264. $send_charset

   Type: string

   Default: "us-ascii:iso-8859-1:utf-8"

   A list of character sets for outgoing messages. Mutt-ng will use the
   first character set into which the text can be converted exactly. If
   your ``$$cchhaarrsseett'' is not iso-8859-1 and recipients may not understand
   UTF-8, it is advisable to include in the list an appropriate widely
   used standard character set (such as iso-8859-2, koi8-r or
   iso-2022-jp) either instead of or after iso-8859-1.

265. $sendmail

   Type: path

   Default: "/usr/sbin/sendmail -oem -oi"

   Specifies the program and arguments used to deliver mail sent by
   Mutt-ng. Mutt-ng expects that the specified program interprets
   additional arguments as recipient addresses.

266. $sendmail_wait

   Type: number

   Default: 0

   Specifies the number of seconds to wait for the ``$$sseennddmmaaiill'' process
   to finish before giving up and putting delivery in the background.

   Mutt-ng interprets the value of this variable as follows:

   >0
          number of seconds to wait for sendmail to finish before
          continuing

   0
          wait forever for sendmail to finish

   <0
          always put sendmail in the background without waiting

   Note that if you specify a value other than 0, the output of the child
   process will be put in a temporary file. If there is some error, you
   will be informed as to where to find the output.

267. $shell

   Type: path

   Default: ""

   Command to use when spawning a subshell. By default, the user's login
   shell from /etc/passwd is used.

268. $sidebar_boundary

   Type: string

   Default: "."

   When the sidebar is displayed and $$ssiiddeebbaarr__sshhoorrtteenn__hhiieerraarrcchhyy is _s_e_t,
   this variable specifies the characters at which to split a folder name
   into ``hierarchy items.''

269. $sidebar_delim

   Type: string

   Default: "|"

   This specifies the delimiter between the sidebar (if visible) and
   other screens.

270. $sidebar_newmail_only

   Type: boolean

   Default: no

   If _s_e_t, only folders with new mail will be shown in the sidebar.

271. $sidebar_number_format

   Type: string

   Default: "%m%?n?(%n)?%?f?[%f]?"

   This variable controls how message counts are printed when the sidebar
   is enabled. If this variable is _e_m_p_t_y (_a_n_d_ _o_n_l_y_ _i_f), no numbers will
   be printed _a_n_d Mutt-ng won't frequently count mail (which may be a
   great speedup esp. with mbox-style mailboxes.)

   The following printf(3)-like sequences are supported all of which may
   be printed non-zero:

   %d
          Number of deleted messages. 1)

   %F
          Number of flagged messages.

   %m
          Total number of messages.

   %M
          Total number of messages shown, i.e. not hidden by a limit. 1)

   %n
          Number of new messages.

   %t
          Number of tagged messages. 1)

   %u
          Number of unread messages.

   1) These expandos only have a non-zero value for the current mailbox
   and will always be zero otherwise.

272. $sidebar_shorten_hierarchy

   Type: boolean

   Default: no

   When _s_e_t, the ``hierarchy'' of the sidebar entries will be shortened
   only if they cannot be printed in full length (because
   ``$$ssiiddeebbaarr__wwiiddtthh'' is set to a too low value). For example, if the
   newsgroup name ``de.alt.sysadmin.recovery'' doesn't fit on the screen,
   it'll get shortened ``d.a.s.recovery'' while ``de.alt.d0'' still would
   and thus will not get shortened.

   At which characters this compression is done is controled via the
   $$ssiiddeebbaarr__bboouunnddaarryy variable.

273. $sidebar_visible

   Type: boolean

   Default: no

   This specifies whether or not to show the sidebar (a list of folders
   specified with the ``mailboxes'' command).

274. $sidebar_width

   Type: number

   Default: 0

   The width of the sidebar.

275. $sig_dashes

   Type: boolean

   Default: yes

   If set, a line containing ``-- '' (dash, dash, space) will be inserted
   before your ``$$ssiiggnnaattuurree''. It is _s_t_r_o_n_g_l_y recommended that you not
   unset this variable unless your ``signature'' contains just your name.
   The reason for this is because many software packages use ``-- \n'' to
   detect your signature.

   For example, Mutt-ng has the ability to highlight the signature in a
   different color in the builtin pager.

276. $sig_on_top

   Type: boolean

   Default: no

   If _s_e_t, the signature will be included before any quoted or forwarded
   text. It is _s_t_r_o_n_g_l_y recommended that you do not set this variable
   unless you really know what you are doing, and are prepared to take
   some heat from netiquette guardians.

277. $signature

   Type: path

   Default: "~/.signature"

   Specifies the filename of your signature, which is appended to all
   outgoing messages. If the filename ends with a pipe (``|''), it is
   assumed that filename is a shell command and input should be read from
   its stdout.

278. $signoff_string

   Type: string

   Default: ""

   If _s_e_t, this string will be inserted before the signature. This is
   useful for people that want to sign off every message they send with
   their name.

   If you want to insert your website's URL, additional contact
   information or witty quotes into your mails, better use a signature
   file instead of the signoff string.

279. $simple_search

   Type: string

   Default: "~f %s | ~s %s"

   Specifies how Mutt-ng should expand a simple search into a real search
   pattern. A simple search is one that does not contain any of the ~
   operators. See ``ppaatttteerrnnss'' for more information on search patterns.

   For example, if you simply type ``joe'' at a search or limit prompt,
   Mutt-ng will automatically expand it to the value specified by this
   variable. For the default value it would be:

   ~f joe | ~s joe

280. $sleep_time

   Type: number

   Default: 1

   Specifies time, in seconds, to pause while displaying certain
   informational messages, while moving from folder to folder and after
   expunging messages from the current folder. The default is to pause
   one second, so a value of zero for this option suppresses the pause.

281. $smart_wrap

   Type: boolean

   Default: yes

   Controls the display of lines longer than the screen width in the
   internal pager. If _s_e_t, long lines are wrapped at a word boundary. If
   _u_n_s_e_t, lines are simply wrapped at the screen edge. Also see the
   ``$$mmaarrkkeerrss'' variable.

282. $smileys

   Type: regular expression

   Default: "(>From )|(:[-^]?[][)(><}{|/DP])"

   The _p_a_g_e_r uses this variable to catch some common false positives of
   ``$$qquuoottee__rreeggeexxpp'', most notably smileys in the beginning of a line

283. $smime_ask_cert_label

   Type: boolean

   Default: yes

   This flag controls whether you want to be asked to enter a label for a
   certificate about to be added to the database or not. It is _s_e_t by
   default. (S/MIME only)

284. $smime_ca_location

   Type: path

   Default: ""

   This variable contains the name of either a directory, or a file which
   contains trusted certificates for use with OpenSSL. (S/MIME only)

285. $smime_certificates

   Type: path

   Default: ""

   Since there is no pubring/secring as with PGP, Mutt-ng has to handle
   storage and retrieval of keys by itself. This is very basic right now,
   and keys and certificates are stored in two different directories,
   both named as the hash-value retrieved from OpenSSL. There is an index
   file which contains mailbox-address keyid pairs, and which can be
   manually edited. This one points to the location of the certificates.
   (S/MIME only)

286. $smime_decrypt_command

   Type: string

   Default: ""

   This format string specifies a command which is used to decrypt
   application/x-pkcs7-mime attachments.

   The OpenSSL command formats have their own set of printf(3)-like
   sequences similar to PGP's:

   %f
          Expands to the name of a file containing a message.

   %s
          Expands to the name of a file containing the signature part of
          a multipart/signed attachment when verifying it.

   %k
          The key-pair specified with $$ssmmiimmee__ddeeffaauulltt__kkeeyy

   %c
          One or more certificate IDs.

   %a
          The algorithm used for encryption.

   %C
          CA location: Depending on whether $$ssmmiimmee__ccaa__llooccaattiioonn points to
          a directory or file, this expands to "-CApath
          $$ssmmiimmee__ccaa__llooccaattiioonn" or "-CAfile $$ssmmiimmee__ccaa__llooccaattiioonn".

   For examples on how to configure these formats, see the smime.rc in
   the samples/ subdirectory which has been installed on your system
   alongside the documentation. (S/MIME only)

287. $smime_decrypt_use_default_key

   Type: boolean

   Default: yes

   If _s_e_t (default) this tells Mutt-ng to use the default key for
   decryption. Otherwise, if manage multiple certificate-key-pairs,
   Mutt-ng will try to use the mailbox-address to determine the key to
   use. It will ask you to supply a key, if it can't find one. (S/MIME
   only)

288. $smime_default_key

   Type: string

   Default: ""

   This is the default key-pair to use for signing. This must be set to
   the keyid (the hash-value that OpenSSL generates) to work properly
   (S/MIME only)

289. $smime_encrypt_command

   Type: string

   Default: ""

   This command is used to create encrypted S/MIME messages. (S/MIME
   only)

290. $smime_encrypt_with

   Type: string

   Default: ""

   This sets the algorithm that should be used for encryption. Valid
   choices are ``des'', ``des3'', ``rc2-40'', ``rc2-64'', ``\frc2-128''.

   If _u_n_s_e_t ``_3_d_e_s'' (TripleDES) is used. (S/MIME only)

291. $smime_get_cert_command

   Type: string

   Default: ""

   This command is used to extract X509 certificates from a PKCS7
   structure. (S/MIME only)

292. $smime_get_cert_email_command

   Type: string

   Default: ""

   This command is used to extract the mail address(es) used for storing
   X509 certificates, and for verification purposes (to check whether the
   certificate was issued for the sender's mailbox). (S/MIME only)

293. $smime_get_signer_cert_command

   Type: string

   Default: ""

   This command is used to extract only the signers X509 certificate from
   a S/MIME signature, so that the certificate's owner may get compared
   to the email's ``From:'' header field. (S/MIME only)

294. $smime_import_cert_command

   Type: string

   Default: ""

   This command is used to import a certificate via smime_keysng. (S/MIME
   only)

295. $smime_is_default

   Type: boolean

   Default: no

   The default behaviour of Mutt-ng is to use PGP on all
   auto-sign/encryption operations. To override and to use OpenSSL
   instead this must be _s_e_t.

   However, this has no effect while replying, since Mutt-ng will
   automatically select the same application that was used to
   sign/encrypt the original message.

   (Note that this variable can be overridden by unsetting
   $$ccrryypptt__aauuttoossmmiimmee.) (S/MIME only)

296. $smime_keys

   Type: path

   Default: ""

   Since there is no pubring/secring as with PGP, Mutt-ng has to handle
   storage ad retrieval of keys/certs by itself. This is very basic right
   now, and stores keys and certificates in two different directories,
   both named as the hash-value retrieved from OpenSSL. There is an index
   file which contains mailbox-address keyid pair, and which can be
   manually edited. This one points to the location of the private keys.
   (S/MIME only)

297. $smime_pk7out_command

   Type: string

   Default: ""

   This command is used to extract PKCS7 structures of S/MIME signatures,
   in order to extract the public X509 certificate(s). (S/MIME only)

298. $smime_sign_command

   Type: string

   Default: ""

   This command is used to created S/MIME signatures of type
   multipart/signed, which can be read by all mail clients. (S/MIME only)

299. $smime_sign_opaque_command

   Type: string

   Default: ""

   This command is used to created S/MIME signatures of type
   application/x-pkcs7-signature, which can only be handled by mail
   clients supporting the S/MIME extension. (S/MIME only)

300. $smime_timeout

   Type: number

   Default: 300

   The number of seconds after which a cached passphrase will expire if
   not used. (S/MIME only)

301. $smime_verify_command

   Type: string

   Default: ""

   This command is used to verify S/MIME signatures of type
   multipart/signed. (S/MIME only)

302. $smime_verify_opaque_command

   Type: string

   Default: ""

   This command is used to verify S/MIME signatures of type
   application/x-pkcs7-mime. (S/MIME only)

303. $smtp_host

   Type: string

   Default: ""

   Availability: SMTP

   Defines the SMTP host which will be used to deliver mail, as opposed
   to invoking the sendmail binary. Setting this variable overrides the
   value of ``$$sseennddmmaaiill'', and any associated variables.

304. $smtp_pass

   Type: string

   Default: ""

   Availability: SMTP

   Defines the password to use with SMTP AUTH. If ``$$ssmmttpp__uusseerr'' is set,
   but this variable is not, you will be prompted for a password when
   sending.

   _N_o_t_e_: Storing passwords in a configuration file presents a security
   risk since the superuser of your machine may read it regardless of the
   file's permissions.

305. $smtp_port

   Type: number

   Default: 25

   Availability: SMTP

   Defines the port that the SMTP host is listening on for mail delivery.
   Must be specified as a number.

   Defaults to 25, the standard SMTP port, but RFC 2476-compliant SMTP
   servers will probably desire 587, the mail submission port.

306. $smtp_use_tls

   Type: string

   Default: ""

   Availability: SMTP (and SSL)

   Defines wether to use STARTTLS. If this option is set to ``_r_e_q_u_i_r_e_d''
   and the server does not support STARTTLS or there is an error in the
   TLS Handshake, the connection will fail. Setting this to ``_e_n_a_b_l_e_d''
   will try to start TLS and continue without TLS in case of an error.
   Muttng still needs to have SSL support enabled in order to use it.

307. $smtp_user

   Type: string

   Default: ""

   Availability: SMTP

   Defines the username to use with SMTP AUTH. Setting this variable will
   cause Mutt-ng to attempt to use SMTP AUTH when sending.

308. $sort

   Type: sort order

   Default: date

   Specifies how to sort messages in the _i_n_d_e_x menu. Valid values are:

   date or date-sent
   date-received
   from
   mailbox-order (unsorted)
   score
   size
   spam
   subject
   threads
   to

   You may optionally use the ``reverse-'' prefix to specify reverse
   sorting order (example: set sort=reverse-date-sent).

309. $sort_alias

   Type: sort order

   Default: alias

   Specifies how the entries in the ``alias'' menu are sorted. The
   following are legal values:

   address (sort alphabetically by email address)
   alias (sort alphabetically by alias name)
   unsorted (leave in order specified in .muttrc)

310. $sort_aux

   Type: sort order

   Default: date

   When sorting by threads, this variable controls how threads are sorted
   in relation to other threads, and how the branches of the thread trees
   are sorted. This can be set to any value that ``$$ssoorrtt'' can, except
   threads (in that case, Mutt-ng will just use date-sent). You can also
   specify the ``last-'' prefix in addition to ``reverse-'' prefix, but
   last- must come after reverse-. The last- prefix causes messages to be
   sorted against its siblings by which has the last descendant, using
   the rest of sort_aux as an ordering.

   For instance, set sort_aux=last-date-received would mean that if a new
   message is received in a thread, that thread becomes the last one
   displayed (or the first, if you have set sort=reverse-threads.)

   _N_o_t_e_: For reversed ``$$ssoorrtt'' order $$ssoorrtt__aauuxx is reversed again (which
   is not the right thing to do, but kept to not break any existing
   configuration setting).

311. $sort_browser

   Type: sort order

   Default: alpha

   Specifies how to sort entries in the file browser. By default, the
   entries are sorted alphabetically. Valid values:

   alpha (alphabetically)
   date
   size
   unsorted

   You may optionally use the ``reverse-'' prefix to specify reverse
   sorting order (example: set sort_browser=reverse-date).

312. $sort_re

   Type: boolean

   Default: yes

   This variable is only useful when sorting by threads with
   ``$$ssttrriicctt__tthhrreeaaddss'' _u_n_s_e_t. In that case, it changes the heuristic
   Mutt-ng uses to thread messages by subject. With $$ssoorrtt__rree_s_e_t, Mutt-ng
   will only attach a message as the child of another message by subject
   if the subject of the child message starts with a substring matching
   the setting of ``$$rreeppllyy__rreeggeexxpp''. With $$ssoorrtt__rree_u_n_s_e_t, Mutt-ng will
   attach the message whether or not this is the case, as long as the
   non-``$$rreeppllyy__rreeggeexxpp'' parts of both messages are identical.

313. $spam_separator

   Type: string

   Default: ","

   ``ssppaamm__sseeppaarraattoorr'' controls what happens when multiple spam headers
   are matched: if _u_n_s_e_t, each successive header will overwrite any
   previous matches value for the spam label. If _s_e_t, each successive
   match will append to the previous, using ``ssppaamm__sseeppaarraattoorr'' as a
   separator.

314. $spoolfile

   Type: path

   Default: ""

   If your spool mailbox is in a non-default place where Mutt-ng cannot
   find it, you can specify its location with this variable. Mutt-ng will
   automatically set this variable to the value of the environment
   variable $MAIL if it is not set.

315. $ssl_ca_certificates_file

   Type: path

   Default: ""

   This variable specifies a file containing trusted CA certificates. Any
   server certificate that is signed with one of these CA certificates
   are also automatically accepted.

   Example: set
   ssl_ca_certificates_file=/etc/ssl/certs/ca-certificates.crt

316. $ssl_client_cert

   Type: path

   Default: ""

   Availability: SSL

   The file containing a client certificate and its associated private
   key.

317. $ssl_force_tls

   Type: boolean

   Default: no

   If this variable is _s_e_t, Mutt-ng will require that all connections to
   remote servers be encrypted. Furthermore it will attempt to negotiate
   TLS even if the server does not advertise the capability, since it
   would otherwise have to abort the connection anyway. This option
   supersedes ``$$ssssll__ssttaarrttttllss''.

318. $ssl_min_dh_prime_bits

   Type: number

   Default: 0

   Availability: GNUTLS

   This variable specifies the minimum acceptable prime size (in bits)
   for use in any Diffie-Hellman key exchange. A value of 0 will use the
   default from the GNUTLS library.

319. $ssl_starttls

   Type: quadoption

   Default: yes

   Availability: SSL or GNUTLS

   If _s_e_t (the default), Mutt-ng will attempt to use STARTTLS on servers
   advertising the capability. When _u_n_s_e_t, Mutt-ng will not attempt to
   use STARTTLS regardless of the server's capabilities.

320. $ssl_use_sslv2

   Type: boolean

   Default: no

   Availability: SSL

   This variables specifies whether to attempt to use SSLv2 in the SSL
   authentication process.

321. $ssl_use_sslv3

   Type: boolean

   Default: yes

   Availability: SSL or GNUTLS

   This variables specifies whether to attempt to use SSLv3 in the SSL
   authentication process.

322. $ssl_use_tlsv1

   Type: boolean

   Default: yes

   Availability: SSL or GNUTLS

   This variables specifies whether to attempt to use TLSv1 in the SSL
   authentication process.

323. $ssl_usesystemcerts

   Type: boolean

   Default: yes

   Availability: SSL

   If set to _y_e_s, Mutt-ng will use CA certificates in the system-wide
   certificate store when checking if server certificate is signed by a
   trusted CA.

324. $status_chars

   Type: string

   Default: "-*%A"

   Controls the characters used by the ``%r'' indicator in
   ``$$ssttaattuuss__ffoorrmmaatt''. The first character is used when the mailbox is
   unchanged. The second is used when the mailbox has been changed, and
   it needs to be resynchronized. The third is used if the mailbox is in
   read-only mode, or if the mailbox will not be written when exiting
   that mailbox (You can toggle whether to write changes to a mailbox
   with the toggle-write operation, bound by default to ``%''). The
   fourth is used to indicate that the current folder has been opened in
   attach-message mode (Certain operations like composing a new mail,
   replying, forwarding, etc. are not permitted in this mode).

325. $status_format

   Type: string

   Default: "-%r-Mutt-ng: %f [Msgs:%?M?%M/?%m%?n? New:%n?%?o? Old:%o?%?d?
   Del:%d?%?F? Flag:%F?%?t? Tag:%t?%?p? Post:%p?%?b? Inc:%b?%?l?
   %l?]---(%s/%S)-%>-(%P)---"

   Controls the format of the status line displayed in the _i_n_d_e_x menu.
   This string is similar to ``$$iinnddeexx__ffoorrmmaatt'', but has its own set of
   printf(3)-like sequences:

   %b
          number of mailboxes with new mail *

   %B
          the short pathname of the current mailbox

   %d
          number of deleted messages *

   %f
          the full pathname of the current mailbox

   %F
          number of flagged messages *

   %h
          local hostname

   %l
          size (in bytes) of the current mailbox *

   %L
          size (in bytes) of the messages shown (i.e., which match the
          current limit) *

   %m
          the number of messages in the mailbox *

   %M
          the number of messages shown (i.e., which match the current
          limit) *

   %n
          number of new messages in the mailbox *

   %o
          number of old unread messages *

   %p
          number of postponed messages *

   %P
          percentage of the way through the index

   %r
          modified/read-only/won't-write/attach-message indicator,
          according to $$ssttaattuuss__cchhaarrss

   %s
          current sorting mode ($$ssoorrtt)

   %S
          current aux sorting method ($$ssoorrtt__aauuxx)

   %t
          number of tagged messages *

   %u
          number of unread messages *

   %v
          Mutt-ng version string

   %V
          currently active limit pattern, if any *

   %>X
          right justify the rest of the string and pad with "X"

   %|X
          pad to the end of the line with "X"

   * = can be optionally printed if nonzero

   Some of the above sequences can be used to optionally print a string
   if their value is nonzero. For example, you may only want to see the
   number of flagged messages if such messages exist, since zero is not
   particularly meaningful. To optionally print a string based upon one
   of the above sequences, the following construct is used

   %?<sequence_char>?<optional_string>?

   where _s_e_q_u_e_n_c_e___c_h_a_r is a character from the table above, and
   _o_p_t_i_o_n_a_l___s_t_r_i_n_g is the string you would like printed if _s_e_q_u_e_n_c_e___c_h_a_r
   is nonzero. _o_p_t_i_o_n_a_l___s_t_r_i_n_g_m_a_y contain other sequences as well as
   normal text, but you may _n_o_t nest optional strings.

   Here is an example illustrating how to optionally print the number of
   new messages in a mailbox:

   %?n?%n new messages.?

   Additionally you can switch between two strings, the first one, if a
   value is zero, the second one, if the value is nonzero, by using the
   following construct:

   %?<sequence_char>?<if_string>&<else_string>?

   You can additionally force the result of any printf(3)-like sequence
   to be lowercase by prefixing the sequence character with an underscore
   (_) sign. For example, if you want to display the local hostname in
   lowercase, you would use:

   %_h

   If you prefix the sequence character with a colon (:) character,
   Mutt-ng will replace any dots in the expansion by underscores. This
   might be helpful with IMAP folders that don't like dots in folder
   names.

326. $status_on_top

   Type: boolean

   Default: no

   Setting this variable causes the ``status bar'' to be displayed on the
   first line of the screen rather than near the bottom.

327. $strict_mailto

   Type: boolean

   Default: yes

   With mailto: style links, a body as well as arbitrary header
   information may be embedded. This may lead to (user) headers being
   overwriten without note if ``$$eeddiitt__hheeaaddeerrss'' is unset.

   If this variable is _s_e_t, Mutt-ng is strict and allows anything to be
   changed. If it's _u_n_s_e_t, all headers given will be prefixed with
   ``X-Mailto-'' and the message including headers will be shown in the
   editor regardless of what ``$$eeddiitt__hheeaaddeerrss'' is set to.

328. $strict_mime

   Type: boolean

   Default: yes

   When _u_n_s_e_t, non MIME-compliant messages that doesn't have any charset
   indication in the ``Content-Type:'' header field can be displayed (non
   MIME-compliant messages are often generated by old mailers or buggy
   mailers like MS Outlook Express). See also $$aassssuummeedd__cchhaarrsseett.

   This option also replaces linear-white-space between encoded-word and
   *text to a single space to prevent the display of MIME-encoded
   ``Subject:'' header field from being devided into multiple lines.

329. $strict_threads

   Type: boolean

   Default: no

   If _s_e_t, threading will only make use of the ``In-Reply-To:'' and
   ``References:'' header fields when you ``$$ssoorrtt'' by message threads.
   By default, messages with the same subject are grouped together in
   ``pseudo threads.'' This may not always be desirable, such as in a
   personal mailbox where you might have several unrelated messages with
   the subject ``hi'' which will get grouped together. See also
   ``$$ssoorrtt__rree'' for a less drastic way of controlling this behaviour.

330. $strip_was

   Type: boolean

   Default: no

   When _s_e_t, Mutt-ng will remove the trailing part of the ``Subject:''
   line which matches $$ssttrriipp__wwaass__rreeggeexx when replying. This is useful to
   properly react on subject changes and reduce ``subject noise.'' (esp.
   in Usenet)

331. $strip_was_regex

   Type: regular expression

   Default: "\([Ww][Aa][RrSs]: .*\)[ ]*$"

   When non-empty and $$ssttrriipp__wwaass is _s_e_t, Mutt-ng will remove this
   trailing part of the ``Subject'' line when replying if it won't be
   empty afterwards.

332. $stuff_quoted

   Type: boolean

   Default: no

   If _s_e_t, attachments with flowed format will have their quoting
   ``stuffed'', i.e. a space will be inserted between the quote
   characters and the actual text.

333. $suspend

   Type: boolean

   Default: yes

   When _u_n_s_e_t, Mutt-ng won't stop when the user presses the terminal's
   _s_u_s_p key, usually CTRL+Z. This is useful if you run Mutt-ng inside an
   xterm using a command like ``xterm -e muttng.''

334. $text_flowed

   Type: boolean

   Default: no

   When _s_e_t, Mutt-ng will generate text/plain; format=flowed attachments.
   This format is easier to handle for some mailing software, and
   generally just looks like ordinary text. To actually make use of this
   format's features, you'll need support in your editor.

   Note that $$iinnddeenntt__ssttrriinngg is ignored when this option is set.

335. $thorough_search

   Type: boolean

   Default: no

   Affects the ~b and ~h search operations described in section
   ``ppaatttteerrnnss'' above. If _s_e_t, the headers and attachments of messages to
   be searched are decoded before searching. If _u_n_s_e_t, messages are
   searched as they appear in the folder.

336. $thread_received

   Type: boolean

   Default: no

   When _s_e_t, Mutt-ng uses the date received rather than the date sent to
   thread messages by subject.

337. $tilde

   Type: boolean

   Default: no

   When _s_e_t, the internal-pager will pad blank lines to the bottom of the
   screen with a tilde (~).

338. $timeout

   Type: number

   Default: 600

   This variable controls the _n_u_m_b_e_r_ _o_f_ _s_e_c_o_n_d_s Mutt-ng will wait for a
   key to be pressed in the main menu before timing out and checking for
   new mail. A value of zero or less will cause Mutt-ng to never time
   out.

339. $tmpdir

   Type: path

   Default: ""

   This variable allows you to specify where Mutt-ng will place its
   temporary files needed for displaying and composing messages. If this
   variable is not set, the environment variable $TMPDIR is used. If
   $TMPDIR is not set then "/tmp" is used.

340. $to_chars

   Type: string

   Default: " +TCFL"

   Controls the character used to indicate mail addressed to you. The
   first character is the one used when the mail is NOT addressed to your
   address (default: space). The second is used when you are the only
   recipient of the message (default: +). The third is when your address
   appears in the ``To:'' header field, but you are not the only
   recipient of the message (default: T). The fourth character is used
   when your address is specified in the ``Cc:'' header field, but you
   are not the only recipient. The fifth character is used to indicate
   mail that was sent by _y_o_u. The sixth character is used to indicate
   when a mail was sent to a mailing-list you're subscribe to (default:
   L).

341. $trash

   Type: path

   Default: ""

   If _s_e_t, this variable specifies the path of the trash folder where the
   mails marked for deletion will be moved, instead of being irremediably
   purged.

   _N_o_t_e: When you delete a message in the trash folder, it is really
   deleted, so that there is no way to recover mail.

342. $tunnel

   Type: string

   Default: ""

   Setting this variable will cause Mutt-ng to open a pipe to a command
   instead of a raw socket. You may be able to use this to set up
   preauthenticated connections to your IMAP/POP3 server. Example:

   tunnel="ssh -q mailhost.net /usr/local/libexec/imapd"

   _N_o_t_e_: For this example to work you must be able to log in to the
   remote machine without having to enter a password.

343. $umask

   Type: number

   Default: 0077

   This sets the umask that will be used by Mutt-ng when creating all
   kinds of files. If _u_n_s_e_t, the default value is 077.

344. $uncollapse_jump

   Type: boolean

   Default: no

   When _s_e_t, Mutt-ng will jump to the next unread message, if any, when
   the current thread is _u_ncollapsed.

345. $use_8bitmime

   Type: boolean

   Default: no

   _W_a_r_n_i_n_g_: do not set this variable unless you are using a version of
   sendmail which supports the -B8BITMIME flag (such as sendmail 8.8.x)
   or in connection with the SMTP support via libESMTP. Otherwise you may
   not be able to send mail.

   When _s_e_t, Mutt-ng will either invoke ``$$sseennddmmaaiill'' with the -B8BITMIME
   flag when sending 8-bit messages to enable ESMTP negotiation or tell
   libESMTP to do so.

346. $use_domain

   Type: boolean

   Default: yes

   When _s_e_t, Mutt-ng will qualify all local addresses (ones without the
   @host portion) with the value of ``$$hhoossttnnaammee''. If _u_n_s_e_t, no addresses
   will be qualified.

347. $use_envelope_from

   Type: boolean

   Default: no

   When _s_e_t, Mutt-ng will use ``$$eennvveellooppee__ffrroomm__aaddddrreessss'' as the _e_n_v_e_l_o_p_e
   sender if that is set, otherwise it will attempt to derive it from the
   "From:" header.

   _N_o_t_e_: This information is passed to sendmail command using the "-f"
   command line switch and passed to the SMTP server for libESMTP (if
   support is compiled in).

348. $use_from

   Type: boolean

   Default: yes

   When _s_e_t, Mutt-ng will generate the ``From:'' header field when
   sending messages. If _u_n_s_e_t, no ``From:'' header field will be
   generated unless the user explicitly sets one using the ``mmyy__hhddrr''
   command.

349. $use_idn

   Type: boolean

   Default: yes

   Availability: IDN

   When _s_e_t, Mutt-ng will show you international domain names decoded.

   _N_o_t_e_: You can use IDNs for addresses even if this is _u_n_s_e_t. This
   variable only affects decoding.

350. $use_ipv6

   Type: boolean

   Default: yes

   When _s_e_t, Mutt-ng will look for IPv6 addresses of hosts it tries to
   contact. If this option is _u_n_s_e_t, Mutt-ng will restrict itself to IPv4
   addresses. Normally, the default should work.

351. $visual

   Type: path

   Default: ""

   Specifies the visual editor to invoke when the _~_v command is given in
   the builtin editor.

352. $wait_key

   Type: boolean

   Default: yes

   Controls whether Mutt-ng will ask you to press a key after _s_h_e_l_l_-
   _e_s_c_a_p_e, _p_i_p_e_-_m_e_s_s_a_g_e, _p_i_p_e_-_e_n_t_r_y, _p_r_i_n_t_-_m_e_s_s_a_g_e, and _p_r_i_n_t_-_e_n_t_r_y
   commands.

   It is also used when viewing attachments with ``aauuttoo__vviieeww'', provided
   that the corresponding mailcap entry has a needsterminal flag, and the
   external program is interactive.

   When _s_e_t, Mutt-ng will always ask for a key. When _u_n_s_e_t, Mutt-ng will
   wait for a key only if the external command returned a non-zero
   status.

353. $weed

   Type: boolean

   Default: yes

   When _s_e_t, Mutt-ng will weed headers when displaying, forwarding,
   printing, or replying to messages.

354. $wrap_search

   Type: boolean

   Default: yes

   Controls whether searches wrap around the end of the mailbox.

   When _s_e_t, searches will wrap around the first (or last) message. When
   _u_n_s_e_t, searches will not wrap.

355. $wrapmargin

   Type: number

   Default: 0

   Controls the size of the margin remaining at the right side of the
   terminal when Mutt-ng's pager does smart wrapping.

356. $write_bcc

   Type: boolean

   Default: yes

   Controls whether Mutt-ng writes out the Bcc header when preparing
   messages to be sent. Exim users may wish to _u_n_s_e_t this.

357. $write_inc

   Type: number

   Default: 10

   When writing a mailbox, a message will be printed every _w_r_i_t_e___i_n_c
   messages to indicate progress. If set to 0, only a single message will
   be displayed before writing a mailbox.

   Also see the ``$$rreeaadd__iinncc'' variable.

358. $xterm_icon

   Type: string

   Default: "M%?n?AIL&ail?"

   Controls the format of the X11 icon title, as long as
   $$xxtteerrmm__sseett__ttiittlleess is _s_e_t. This string is identical in formatting to
   the one used by ``$$ssttaattuuss__ffoorrmmaatt''.

359. $xterm_leave

   Type: string

   Default: ""

   If $$xxtteerrmm__sseett__ttiittlleess is _s_e_t, this string will be used to set the title
   when leaving Mutt-ng. For terminal-based programs, there's no easy and
   portable way to read the current title so Mutt-ng cannot read it upon
   startup and restore it when exiting.

   Based on the xterm FAQ, the following might work:

   set xterm_leave = "`test x$DISPLAY != x && xprop -id $WINDOWID | grep
   WM_NAME | cut -d '"' -f 2`"

360. $xterm_set_titles

   Type: boolean

   Default: no

   Controls whether Mutt-ng sets the xterm title bar and icon name (as
   long as you're in an appropriate terminal). The default must be _u_n_s_e_t
   to force in the validity checking.

361. $xterm_title

   Type: string

   Default: "Mutt-ng with %?m?%m messages&no messages?%?n? [%n New]?"

   Controls the format of the title bar of the xterm provided that
   $$xxtteerrmm__sseett__ttiittlleess has been _s_e_t. This string is identical in formatting
   to the one used by ``$$ssttaattuuss__ffoorrmmaatt''.

5. Functions

   The following is the list of available functions listed by the mapping
   in which they are available. The default key setting is given, and an
   explanation of what the function does. The key bindings of these
   functions can be changed with the bbiinndd command.

5.1. generic

   The _g_e_n_e_r_i_c menu is not a real menu, but specifies common functions
   (such as movement) available in all menus except for _p_a_g_e_r and _e_d_i_t_o_r.
   Changing settings for this menu will affect the default bindings for
   all menus (except as noted).

   _T_a_b_l_e_ _7_._4_._ _R_e_f_e_r_e_n_c_e_:_ _D_e_f_a_u_l_t_ _G_e_n_e_r_i_c_ _F_u_n_c_t_i_o_n_ _B_i_n_d_i_n_g_s
   Function Default Key Description
   <bottom-page> L move to the bottom of the page
   <current-bottom>   move current entry to bottom of page
   <current-middle>   move current entry to middle of page
   <current-top>   move current entry to top of page
   <enter-command> : enter a muttngrc command
   <exit> q exit this menu
   <first-entry> = move to the first entry
   <half-down> ] scroll down 1/2 page
   <half-up> [ scroll up 1/2 page
   <help> ? this screen
   <jump> number jump to an index number
   <last-entry> * move to the last entry
   <middle-page> M move to the middle of the page
   <next-entry> j move to the next entry
   <next-line> > scroll down one line
   <next-page> z move to the next page
   <previous-entry> k move to the previous entry
   <previous-line> > scroll up one line
   <previous-page> Z move to the previous page
   <rebuild-cache>   cycle through all defined mailboxes to rebuild all
   header caches
   <refresh> C-L clear and redraw the screen
   <search> / search for a regular expression
   <search-next> n search for next match
   <search-opposite>   search for next match in opposite direction
   <search-reverse> E-/ search backwards for a regular expression
   <select-entry> Return select the current entry
   <shell-escape> ! run a program in a subshell
   <tag-entry> t toggle the tag on the current entry
   <tag-prefix> ; apply next command to tagged entries
   <tag-prefix-cond>   apply next function ONLY to tagged messages
   <top-page> H move to the top of the page
   <what-key>   display the keycode for a key press

5.2. index

   _T_a_b_l_e_ _7_._5_._ _R_e_f_e_r_e_n_c_e_:_ _D_e_f_a_u_l_t_ _I_n_d_e_x_ _F_u_n_c_t_i_o_n_ _B_i_n_d_i_n_g_s
   Function Default Key Description
   <bounce-message> b remail a message to another user
   <change-folder> c open a different folder
   <change-folder-readonly> E-c open a different folder in read only mode
   <check-traditional-pgp> E-P check for classic pgp
   <clear-flag> W clear a status flag from a message
   <copy-message> C copy a message to a file/mailbox
   <create-alias> a create an alias from a message sender
   <decode-copy> E-C decode a message and copy it to a file/mailbox
   <decode-save> E-s decode a message and save it to a file/mailbox
   <delete-message> d delete the current entry
   <delete-pattern> D delete messages matching a pattern
   <delete-subthread> E-d delete all messages in subthread
   <delete-thread> C-D delete all messages in thread
   <display-address> @ display full address of sender
   <display-toggle-weed> h display message and toggle header weeding
   <display-message> Return display a message
   <edit> e edit the current message
   <edit-type> C-E edit the current message's Content-Type
   <exit> x exit without saving changes
   <extract-keys> C-K extract PGP public keys
   <fetch-mail> G retrieve mail from POP server
   <flag-message> F toggle a message's 'important' flag
   <forget-passphrase> C-F wipe PGP passphrase from memory
   <forward-message> f forward a message with comments
   <group-reply> g reply to all recipients
   <limit> l show only messages matching a pattern
   <list-reply> L reply to specified mailing list
   <mail> m compose a new mail message
   <mail-key> E-k mail a PGP public key
   <next-new>   jump to the next new message
   <next-new-then-unread> Tab jump to the next new or unread message
   <next-subthread> E-n jump to the next subthread
   <next-thread> C-N jump to the next thread
   <next-undeleted> j move to the next undeleted message
   <next-unread>   jump to the next unread message
   <parent-message> P jump to parent message in thread
   <pipe-message> | pipe message/attachment to a shell command
   <previous-new>   jump to the previous new message
   <previous-new-then-unread> E-Tab jump to the previous new or unread
   message
   <previous-page> Z move to the previous page
   <previous-subthread> E-p jump to previous subthread
   <previous-thread> C-P jump to previous thread
   <previous-undeleted> k move to the last undelete message
   <previous-unread>   jump to the previous unread message
   <print-message> p print the current entry
   <query> Q query external program for addresses
   <quit> q save changes to mailbox and quit
   <read-subthread> E-r mark the current subthread as read
   <read-thread> C-R mark the current thread as read
   <recall-message> R recall a postponed message
   <reply> r reply to a message
   <resend-message> E-e resend message and preserve MIME structure
   <save-message> s save message/attachment to a file
   <set-flag> w set a status flag on a message
   <show-version> V show the Mutt-ng version number and date
   <show-limit> E-l show currently active limit pattern, if any
   <sort-mailbox> o sort messages
   <sort-reverse> O sort messages in reverse order
   <sync-mailbox> $ save changes to mailbox
   <tag-pattern> T tag messages matching a pattern
   <tag-thread> E-t tag/untag all messages in the current thread
   <toggle-new> N toggle a message's 'new' flag
   <toggle-write> % toggle whether the mailbox will be rewritten
   <undelete-message> u undelete the current entry
   <undelete-pattern> U undelete messages matching a pattern
   <undelete-subthread> E-u undelete all messages in subthread
   <undelete-thread> C-U undelete all messages in thread
   <untag-pattern> C-T untag messages matching a pattern
   <view-attachments> v show MIME attachments

5.3. pager

   _T_a_b_l_e_ _7_._6_._ _R_e_f_e_r_e_n_c_e_:_ _D_e_f_a_u_l_t_ _P_a_g_e_r_ _F_u_n_c_t_i_o_n_ _B_i_n_d_i_n_g_s
   Function Default Key Description
   <bottom>   jump to the bottom of the message
   <bounce-message> b remail a message to another user
   <change-folder> c open a different folder
   <change-folder-readonly> E-c open a different folder in read only mode
   <check-traditional-pgp> E-P check for classic pgp
   <copy-message> C copy a message to a file/mailbox
   <create-alias> a create an alias from a message
   <senderdecode-copy> E-C decode a message and copy it to a file/mailbox
   <decode-save> E-s decode a message and save it to a file/mailbox
   <delete-message> d delete the current entry
   <delete-subthread> E-d delete all messages in subthread
   <delete-thread> C-D delete all messages in thread
   <display-address> @ display full address of sender
   <display-toggle-weed> h display message and toggle header weeding
   <edit> e edit the current message
   <edit-type> C-E edit the current message's Content-Type
   <enter-command> : enter a muttngrc command
   <exit> i return to the main-menu
   <extract-keys> C-K extract PGP public keys
   <flag-message> F toggle a message's 'important' flag
   <forget-passphrase> C-F wipe PGP passphrase from memory
   <forward-message> f forward a message with comments
   <group-reply> g reply to all recipients
   <half-up>   move up one-half page
   <half-down>   move down one-half page
   <help> ? this screen
   <list-reply> L reply to specified mailing list
   <mail> m compose a new mail message
   <mail-key> E-k mail a PGP public key
   <mark-as-new> N toggle a message's 'new' flag
   <next-line> Return scroll down one line
   <next-entry> J move to the next entry
   <next-new>   jump to the next new message
   <next-new-then-unread> Tab jump to the next new or unread message
   <next-page>   move to the next page
   <next-subthread> E-n jump to the next subthread
   <next-thread> C-N jump to the next thread
   <next-undeleted> j move to the next undeleted message
   <next-unread>   jump to the next unread message
   <parent-message> P jump to parent message in thread
   <pipe-message> | pipe message/attachment to a shell command
   <previous-line> BackSpace scroll up one line
   <previous-entry> K move to the previous entry
   <previous-new>   jump to the previous new message
   <previous-new-then-unread>   jump to the previous new or unread
   message
   <previous-page> - move to the previous page
   <previous-subthread> E-p jump to previous subthread
   <previous-thread> C-P jump to previous thread
   <previous-undeleted> k move to the last undelete message
   <previous-unread>   jump to the previous unread message
   <print-message> p print the current entry
   <quit> Q save changes to mailbox and quit
   <read-subthread> E-r mark the current subthread as read
   <read-thread> C-R mark the current thread as read
   <recall-message> R recall a postponed message
   <redraw-screen> C-L clear and redraw the screen
   <reply> r reply to a message
   <save-message> s save message/attachment to a file
   <search> / search for a regular expression
   <search-next> n search for next match
   <search-opposite>   search for next match in opposite direction
   <search-reverse> E-/ search backwards for a regular expression
   <search-toggle> \ toggle search pattern coloring
   <shell-escape> ! invoke a command in a subshell
   <show-version> V show the Mutt-ng version number and date
   <skip-quoted> S skip beyond quoted text
   <sync-mailbox> $ save changes to mailbox
   <tag-message> t tag a message
   <toggle-quoted> T toggle display of quoted text
   <top> ^ jump to the top of the message
   <undelete-message> u undelete the current entry
   <undelete-subthread> E-u undelete all messages in subthread
   <undelete-thread> C-U undelete all messages in thread
   <view-attachments> v show MIME attachments

5.4. alias

   _T_a_b_l_e_ _7_._7_._ _R_e_f_e_r_e_n_c_e_:_ _D_e_f_a_u_l_t_ _A_l_i_a_s_ _M_e_n_u_ _F_u_n_c_t_i_o_n_ _B_i_n_d_i_n_g_s
   Function         Default Key Description
   <search>         /           search for a regular expression
   <search-next>    n           search for next match
   <search-reverse> E-/         search backwards for a regular expression

5.5. query

   _T_a_b_l_e_ _7_._8_._ _R_e_f_e_r_e_n_c_e_:_ _D_e_f_a_u_l_t_ _Q_u_e_r_y_ _M_e_n_u_ _F_u_n_c_t_i_o_n_ _B_i_n_d_i_n_g_s
   Function          Default Key Description
   <create-alias>    a           create an alias from a message sender
   <mail>            m           compose a new mail message
   <query>           Q           query external program for addresses
   <query-append>    A           append new query results to current results
   <search>          /           search for a regular expression
   <search-next>     n           search for next match
   <search-opposite>             search for next match in opposite direction
   <search-reverse>  E-/         search backwards for a regular expression

5.6. attach

   _T_a_b_l_e_ _7_._9_._ _R_e_f_e_r_e_n_c_e_:_ _D_e_f_a_u_l_t_ _A_t_t_a_c_h_m_e_n_t_ _M_e_n_u_ _F_u_n_c_t_i_o_n_ _B_i_n_d_i_n_g_s
   Function Default Key Description
   <bounce-message> b remail a message to another user
   <collapse-parts> v toggle display of subparts
   <delete-entry> d delete the current entry
   <display-toggle-weed> h display message and toggle header weeding
   <edit-type> C-E edit the current entry's Content-Type
   <extract-keys> C-K extract PGP public keys
   <forward-message> f forward a message with comments
   <group-reply> g reply to all recipients
   <list-reply> L reply to specified mailing list
   <pipe-entry> | pipe message/attachment to a shell command
   <print-entry> p print the current entry
   <reply> r reply to a message
   <resend-message> E-e resend message and preserve MIME structure
   <save-entry> s save message/attachment to a file
   <undelete-entry> u undelete the current entry
   <view-attach> Return view attachment using mailcap entry if necessary
   <view-mailcap> m force viewing of attachment using mailcap
   <view-text> T view attachment as text

5.7. compose

   _T_a_b_l_e_ _7_._1_0_._ _R_e_f_e_r_e_n_c_e_:_ _D_e_f_a_u_l_t_ _C_o_m_p_o_s_e_ _M_e_n_u_ _F_u_n_c_t_i_o_n_ _B_i_n_d_i_n_g_s
   Function Default Key Description
   <attach-file> a attach a file(s) to this message
   <attach-message> A attach message(s) to this message
   <attach-key> E-k attach a PGP public key
   <copy-file> C save message/attachment to a file
   <detach-file> D delete the current entry
   <display-toggle-weed> h display message and toggle header weeding
   <edit-bcc> b edit the BCC list
   <edit-cc> c edit the CC list
   <edit-description> d edit attachment description
   <edit-encoding> C-E edit attachment transfer-encoding
   <edit-fcc> f enter a file to save a copy of this message in
   <edit-from> E-f edit the from: field
   <edit-file> C-X e edit the file to be attached
   <edit-headers> E edit the message with headers
   <edit> e edit the message
   <edit-mime> m edit attachment using mailcap entry
   <edit-reply-to> r edit the Reply-To field
   <edit-subject> s edit the subject of this message
   <edit-to> t edit the TO list
   <edit-type> C-T edit attachment type
   <filter-entry> F filter attachment through a shell command
   <forget-passphrase> C-F wipe PGP passphrase from memory
   <ispell> i run ispell on the message
   <new-mime> n compose new attachment using mailcap entry
   <pgp-menu> p show PGP options
   <pipe-entry> | pipe message/attachment to a shell command
   <postpone-message> P save this message to send later
   <print-entry> l print the current entry
   <rename-file> R rename/move an attached file
   <send-message> y send the message
   <toggle-unlink> u toggle whether to delete file after sending it
   <view-attach> Return view attachment using mailcap entry if necessary
   <write-fcc> w write the message to a folder

5.8. postpone

   _T_a_b_l_e_ _7_._1_1_._ _R_e_f_e_r_e_n_c_e_:_ _D_e_f_a_u_l_t_ _P_o_s_t_p_o_n_e_ _M_e_n_u_ _F_u_n_c_t_i_o_n_ _B_i_n_d_i_n_g_s
   Function         Default Key Description
   <delete-entry>   d           delete the current entry
   <undelete-entry> u           undelete the current entry

5.9. browser

   _T_a_b_l_e_ _7_._1_2_._ _R_e_f_e_r_e_n_c_e_:_ _D_e_f_a_u_l_t_ _B_r_o_w_s_e_r_ _M_e_n_u_ _F_u_n_c_t_i_o_n_ _B_i_n_d_i_n_g_s
   Function Default Key Description
   <change-dir> c change directories
   <check-new> Tab check mailboxes for new mail
   <enter-mask> m enter a file mask
   <search> / search for a regular expression
   <search-next> n search for next match
   <search-reverse> E-/ search backwards for a regular expression
   <select-new> N select a new file in this directory
   <sort> o sort messages
   <sort-reverse> O sort messages in reverse order
   <toggle-mailboxes> Tab toggle whether to browse mailboxes or all files
   <view-file> Space view file
   <subscribe> s subscribe to current mailbox (IMAP Only)
   <unsubscribe> u unsubscribe to current mailbox (IMAP Only)
   <toggle-subscribed> T toggle view all/subscribed mailboxes (IMAP Only)

5.10. pgp

   _T_a_b_l_e_ _7_._1_3_._ _R_e_f_e_r_e_n_c_e_:_ _D_e_f_a_u_l_t_ _P_G_P_ _M_e_n_u_ _F_u_n_c_t_i_o_n_ _B_i_n_d_i_n_g_s
   Function     Default Key Description
   <view-name>  %           view the key's user id
   <verify-key> c           verify a PGP public key

5.11. editor

   _T_a_b_l_e_ _7_._1_4_._ _R_e_f_e_r_e_n_c_e_:_ _D_e_f_a_u_l_t_ _E_d_i_t_o_r_ _F_u_n_c_t_i_o_n_ _B_i_n_d_i_n_g_s
   Function          Default Key Description
   <backspace>       BackSpace   delete the char in front of the cursor
   <backward-char>   C-B         move the cursor one character to the left
   <backward-word>   E-b         move the cursor to the previous word
   <bol>             C-A         jump to the beginning of the line
   <buffy-cycle>     Space       cycle among incoming mailboxes
   <capitalize-word> E-c         uppercase the first character in the word
   <complete>        Tab         complete filename or alias
   <complete-query>  C-T         complete address with query
   <delete-char>     C-D         delete the char under the cursor
   <downcase-word>   E-l         lowercase all characters in current word
   <eol>             C-E         jump to the end of the line
   <forward-char>    C-F         move the cursor one character to the right
   <forward-word>    E-f         move the cursor to the next word
   <history-down>                scroll down through the history list
   <history-up>                  scroll up through the history list
   <kill-eol>        C-K         delete chars from cursor to end of line
   <kill-eow>        E-d         delete chars from cursor to end of word
   <kill-line>       C-U         delete all chars on the line
   <kill-word>       C-W         delete the word in front of the cursor
   <quote-char>      C-V         quote the next typed key
   <transpose-chars>             transpose character under cursor with previous
   <upcase-word>     E-u         uppercase all characters in current word

5.12. sidebar

   _T_a_b_l_e_ _7_._1_5_._ _R_e_f_e_r_e_n_e_:_ _D_e_f_a_u_l_t_ _S_i_d_e_b_a_r_ _F_u_n_c_t_i_o_n_ _B_i_n_d_i_n_g_s
   Key Function              Description
       <sidebar-scroll-up>   Scrolls the mailbox list up 1 page
       <sidebar-scroll-down> Scrolls the mailbox list down 1 page
       <sidebar-next>        Highlights the next mailbox
       <sidebar-next-new>    Highlights the next mailbox with new mail
       <sidebar-previous>    Highlights the previous mailbox
       <sidebar-open>        Opens the currently highlighted mailbox

Appendix A. Acknowledgments

   Kari Hurtta <kkaarrii..hhuurrttttaa@@ffmmii..ffii> co-developed the original MIME
   >parsing code back in the ELM-ME days.

   The following people have been very helpful to the development of Mutt
   (sorted by surnames):

     * Vikas Agnihotri <vviikkaassaa@@wwrriitteemmee..ccoomm>
     * Francois Berjon < FFrraannccooiiss..BBeerrjjoonn@@aaaarr..aallccaatteell--aallsstthhoomm..ffrr>
     * Aric Blumer <aarriicc@@ffoorree..ccoomm>
     * John Capo <jjcc@@iirrbbss..ccoomm>
     * David Champion <ddggcc@@uucchhiiccaaggoo..eedduu>
     * Brendan Cully <bbrreennddaann@@kkuubbllaaii..ccoomm>
     * Liviu Daia <ddaaiiaa@@ssttooiillooww..iimmaarr..rroo>
     * Thomas E. Dickey <ddiicckkeeyy@@hheerrnnddoonn44..hhiiss..ccoomm>
     * David DeSimone <ffooxx@@ccoonnvveexx..hhpp..ccoomm>
     * Nickolay N. Dudorov <nnnndd@@wwiinntt..iittffss..nnsskk..ssuu>
     * Ruslan Ermilov <rruu@@ffrreeeebbssdd..oorrgg>
     * Edmund Grimley Evans <eeddmmuunnddoo@@rraannoo..oorrgg>
     * Michael Finken <ffiinnkkeenn@@ccoonnwwaarree..ddee>
     * Sven Guckes <gguucckkeess@@mmaatthh..ffuu--bbeerrlliinn..ddee>
     * Lars Hecking <llhheecckkiinngg@@nnmmrrcc..iiee>
     * Mark Holloman <hhoolllloommaann@@nnaannddoo..nneett>
     * Andreas Holzmann <hhoollzzmmaannnn@@ffmmii..uunnii--ppaassssaauu..ddee>
     * Marco d'Itri <mmdd@@lliinnuuxx..iitt>
     * Bjrn Jacke <bbjjaacckkee@@ssuussee..ccoomm>
     * Byrial Jensen <bbyyrriiaall@@iimmaaggee..ddkk>
     * David Jeske <jjeesskkee@@iiggccoomm..nneett>
     * Christophe Kalt <kkaalltt@@hhuuggoo..iinntt--eevvrryy..ffrr>
     * Tommi Komulainen <TToommmmii..KKoommuullaaiinneenn@@iikkii..ffii>
     * Felix von Leitner (a.k.a ``Fefe'') < lleeiittnneerr@@mmaatthh..ffuu--bbeerrlliinn..ddee >
     * Brandon Long <bblloonngg@@ffiiccttiioonn..nneett>
     * Jimmy Mke <jjmmyy@@ffllaasshhbbaacckk..nneett>
     * Lars Marowsky-Bree <llmmbb@@ppooiinntteerr..iinn--mmiinnddeenn..ddee>
     * Thomas ``Mike'' Michlmayr <mmiikkee@@ccoossyy..ssbbgg..aacc..aatt>
     * Andrew W. Nosenko <aawwnn@@bbccss..zzpp..uuaa>
     * David O'Brien <oobbrriieenn@@NNuuxxii..ccss..uuccddaavviiss..eedduu>
     * Clint Olsen <oollsseenncc@@iicchhiippss..iinntteell..ccoomm>
     * Park Myeong Seok <ppmmss@@rroommaannccee..kkaaiisstt..aacc..kkrr>
     * Thomas Parmelan <ttoomm@@aannkkhh..ffrr..eeuu..oorrgg>
     * Ollivier Robert <rroobbeerrttoo@@kkeellttiiaa..ffrreeeenniixx..ffrr>
     * Thomas Roessler <rrooeesssslleerr@@ddooeess--nnoott--eexxiisstt..oorrgg>
     * Roland Rosenfeld <rroollaanndd@@ssppiinnnnaakkeerr..ddee>
     * TAKIZAWA Takashi <ttaakkii@@lluunnaa..eemmaaiill..nnee..jjpp>
     * Allain Thivillon <AAllllaaiinn..TThhiivviilllloonn@@aallmmaa..ffrr>
     * Gero Treuner <ggeerroo@@7700tt..ddee>
     * Vsevolod Volkov <vvvvvv@@lluucckkyy..nneett>
     * Ken Weinert <kkeennww@@iihhss..ccoomm>

   Mutt-ng is developed by the following people:

     * Andreas Krennmair <aakk@@ssyynnfflloooodd..aatt>
     * Nico Golde <nniiccoo@@nnggoollddee..ddee>
     * Rocco Rutte <ppddmmeeff@@ccss..ttuu--bbeerrlliinn..ddee>

   The following people have been very helpful to the development of
   Mutt-ng (sorted by surnames):

     * Christian Gall <ccgg@@ccggaallll..ddee>
     * Iain Lea <iiaaiinn@@bbrriiccbbrraacc..ddee>
     * Andreas Kneib <aakknneeiibb@@ggmmxx..nneett>
     * Felix Meinhold <ffeelliixx..mmeeiinnhhoolldd@@ggmmxx..nneett>
     * Carsten Schoelzki <ccjjss@@wweeiisssshhuuhhnn..ddee>
     * Elimar Riesebieter <rriieesseebbiiee@@llxxtteecc..ddee>

Appendix B. Hacking Documentation

   This manual is written in XML and transformed via a XSLT stylesheet
   into valid DocBook/XML and/or LaTeX to be again transformed via a XSLT
   stylesheet into the final formats.

   This two pass processing is required to keep the file size low and to
   sanitize use, i.e. drastically lower the typing overhead.

   To achieve the latter, the sources come with a file called
   muttng-manual.xsl introducing the muttng-doc namespace which offers
   the following tags to be used (_n_o_t_e_:_ _t_h_i_s_ _i_s_ _f_a_r_ _f_r_o_m_ _b_e_i_n_g_ _c_o_m_p_l_e_t_e_,
   _a_n_y_ _h_e_l_p_ _t_o_w_a_r_d_s_ _c_o_n_s_i_s_t_e_n_c_y_ _i_s_ _h_i_g_h_l_y_ _a_p_p_r_e_c_i_a_t_e_d).

   <muttng-doc:man name="" [sect=""]/>
          _R_e_f_e_r_e_n_c_e_s_ _t_o_ _m_a_n_u_a_l_ _p_a_g_e_s_. If the sect parameter is omitted,
          it'll be 1 for the commands section. There's no auto-indexing
          yet.

   <muttng-doc:envvar name=""/>
          _R_e_f_e_r_e_n_c_e_s_ _t_o_ _e_n_v_i_r_o_n_m_e_n_t_ _v_a_r_i_a_b_l_e_s_. The name parameter must
          contain upper-case letters only without the dollar sign as
          it'll be added automatically. Auto-indexing is done.

   <muttng-doc:hook name=""/>
          _R_e_f_e_r_e_n_c_e_s_ _t_o_ _h_o_o_k_s_. The string -hook will be added
          automatically to the value given in the name parameter. All
          entries will be auto-indexed.

   <muttng-doc:pattern name="" [full="1"]/>
          _R_e_f_e_r_e_n_c_e_s_ _t_o_ _p_a_t_t_e_r_n_s_. The name parameter must only contain
          the letter/symbol for the pattern as the tilde symbol/equal
          sign will be added automatically. Auto-indexing is done. If the
          full parameter is given the equal sign as well as tilde will be
          printed for a fully complete reference.

   <muttng-doc:key [mod="C|E"]>key</muttng-doc:key>
          _R_e_f_e_r_e_n_c_i_n_g_ _a_ _k_e_y_.. Because it's somewhat untrivial to always
          get the right escaping for LaTeX, there's a tag for it. The
          optional modifiers C or E stand for Control and Escape
          respectively. To still allow escaping, the actual key sequences
          must be given within the tag.

   <muttng-doc:funcdef name=""/>
          _D_e_f_i_n_i_n_g_ _a_ _c_o_m_m_a_n_d_.. It's used to define a command with the
          name given in the name parameter. The default key binding must
          be given via <muttng-doc:key/> (see above). The string will be
          automatically enclosed in <>. Auto-indexing is done. Also an
          anchor with id func-[name] will be added with [name] being the
          value of the name parameter.

   <muttng-doc:funcref name=""/>
          _R_e_f_e_r_e_n_c_e_s_ _t_o_ _f_u_n_c_t_i_o_n_s_.. This is practically the same as the
          above except that there's no anchor defined.

   <muttng-doc:vardef name=""/>
          _D_e_f_i_n_i_n_g_ _a_ _v_a_r_i_a_b_l_e_. This is to be used by makedoc only to
          define a command with a given name and XML-normalized link
          given via id. Auto-indexing is done. The name parameter's value
          will be prefixed with a dollar sign as for environment
          variables.

   <muttng-doc:varref name=""/>
          _R_e_f_e_r_e_n_c_e_s_ _t_o_ _v_a_r_i_a_b_l_e_s_. This practically is the same as above
          except that the text inbetween won't be wrapped within a
          <sect1> tag. Auto-indexing is the same as for the above. This
          one is intended for manual use.

   <muttng-doc:web url""/>
          _P_r_e_t_t_y_ _p_r_i_n_t_ _a_ _l_i_n_k_e_d_ _U_R_L. As for E-Mail addresses where the
          text (mostly) equals the link's target, URLs must be enclosed
          in <> (also this reduced redudant URL typing).

   <muttng-doc:rfc num=""/>
          _R_e_f_e_r_e_n_c_e_s_ _t_o_ _R_f_C_ _d_o_c_u_m_e_n_t_s_. Use this to produce links to RfC
          document with number given as the num parameter. A link to
          <<hhttttpp::////wwwwww..ffaaqqss..oorrgg//>> will be made. Auto-indexing is done
          under _R_f_C.

   <muttng-doc:cmddef name="" [noanchor="1"]/>
          _D_e_f_i_n_i_n_g_ _a_ _c_o_n_f_i_g_u_r_a_t_i_o_n_ _c_o_m_m_a_n_d_. The name of the command is
          given as the name parameter. In case a single command has
          multiple possible calling sequences, specify noanchor="1" for
          subsequent use. Auto-indexing is done. Specify the arguments
          within the tag.

   <muttng-doc:cmdref name=""/>
          _R_e_f_e_r_e_n_c_e_s_ _t_o_ _c_o_n_f_i_g_u_r_a_t_i_o_n_ _c_o_m_m_a_n_d_s_. Use this to refer to
          commands as it builds the proper internal reference name.
          Auto-indexing is done.

   <muttng-doc:lstconf/>, <muttng-doc:lstmail/>, <muttng-doc:lstshell/>
          _S_c_r_e_e_n_ _l_a_y_o_u_t_ _b_y_ _c_o_n_t_e_x_t_. These are used to specify
          environments for different types of screen output. For DocBook
          output, all of these simply map to <screen/>. But as a possible
          future migration to LaTeX may be ahead, different languages
          defined for the listings.sty packages may be used to have
          proper syntax highlighting for these so that there must be a
          context sensitive distinction.

   <muttng-doc:special [docbook=""] [latex=""]/>
          This is intended for specifying special strings for either
          DocBook/XML or LaTeX.

   Additional notes follow.

     * To not fully bloat the XSL stylesheet procuding the LaTeX code,
       all tables _m_u_s_t have an attribute called texstr which is directly
       passed to longtable.

Index

Symbols

   ~$/ =$, PPaatttteerrnnss
   ~*/ =*, PPaatttteerrnnss
   ~=/ ==, PPaatttteerrnnss
   ~A/ =A, PPaatttteerrnnss
   ~b/ =b, CCoommpplleexx  PPaatttteerrnnss, PPaatttteerrnnss
   ~B/ =B, PPaatttteerrnnss
   ~c/ =c, PPaatttteerrnnss
   ~C/ =C, PPaatttteerrnnss
   ~d/ =d, PPaatttteerrnnss  aanndd  DDaatteess, PPaatttteerrnnss
   ~D/ =D, PPaatttteerrnnss
   ~E/ =E, PPaatttteerrnnss
   ~e/ =e, PPaatttteerrnnss
   ~f/ =f, CCoommpplleexx  PPaatttteerrnnss, PPaatttteerrnnss
   ~F/ =F, PPaatttteerrnnss
   ~g/ =g, PPaatttteerrnnss
   ~G/ =G, PPaatttteerrnnss
   ~H/ =H, SSppaamm  ddeetteeccttiioonn, PPaatttteerrnnss
   ~h/ =h, PPaatttteerrnnss
   ~i/ =i, PPaatttteerrnnss
   ~k/ =k, PPaatttteerrnnss
   ~L/ =L, PPaatttteerrnnss
   ~l/ =l, PPaatttteerrnnss
   ~m/ =m, PPaatttteerrnnss
   ~M/ =M, PPaatttteerrnnss
   ~n/ =n, MMeessssaaggee  SSccoorriinngg, PPaatttteerrnnss
   ~N/ =N, PPaatttteerrnnss
   ~O/ =O, PPaatttteerrnnss
   ~p/ =p, PPaatttteerrnnss
   ~P/ =P, PPaatttteerrnnss
   ~Q/ =Q, PPaatttteerrnnss
   ~R/ =R, PPaatttteerrnnss
   ~r/ =r, PPaatttteerrnnss
   ~s/ =s, CCoommpplleexx  PPaatttteerrnnss, PPaatttteerrnnss
   ~S/ =S, PPaatttteerrnnss
   ~T/ =T, PPaatttteerrnnss
   ~t/ =t, PPaatttteerrnnss
   ~U/ =U, CCoommpplleexx  PPaatttteerrnnss, PPaatttteerrnnss
   ~u/ =u, PPaatttteerrnnss
   ~v/ =v, PPaatttteerrnnss
   ~V/ =V, PPaatttteerrnnss
   ~w/ =w, PPaatttteerrnnss
   ~x/ =x, CCoommpplleexx  PPaatttteerrnnss, PPaatttteerrnnss
   ~X/ =X, PPaatttteerrnnss
   ~y/ =y, HHaannddlliinngg  MMaaiilliinngg  LLiissttss, PPaatttteerrnnss
   ~z/ =z, PPaatttteerrnnss

A

   $abort_noattach , $$aabboorrtt__nnooaattttaacchh
   $abort_nosubject , $$aabboorrtt__nnoossuubbjjeecctt
   $abort_unmodified , $$aabboorrtt__uunnmmooddiiffiieedd
   account-hook, MMaannaaggiinngg  mmuullttiippllee  IIMMAAPP//PPOOPP//NNNNTTPP  aaccccoouunnttss  ((OOPPTTIIOONNAALL)),
          CCoonnffiigguurraattiioonn  CCoommmmaannddss

   $agent_string , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $agent_string , $$aaggeenntt__ssttrriinngg
   alias, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, DDeeffiinniinngg//UUssiinngg  aalliiaasseess, CCoonnffiigguurraattiioonn
          CCoommmmaannddss

   $alias_file, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, DDeeffiinniinngg//UUssiinngg  aalliiaasseess
   $alias_file , $$aalliiaass__ffiillee
   $alias_format , $$aalliiaass__ffoorrmmaatt
   $allow_8bit , $$aallllooww__88bbiitt
   $allow_ansi , $$aallllooww__aannssii
   alternates, AAlltteerrnnaattiivvee  aaddddrreesssseess, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   alternative_order, MMIIMMEE  MMuullttiippaarrtt//AAlltteerrnnaattiivvee, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   append-hook, CCoommpprreesssseedd  ffoollddeerrss  SSuuppppoorrtt  ((OOPPTTIIOONNAALL)), AAppppeenndd  aa  mmeessssaaggee
          ttoo  aa  ccoommpprreesssseedd  mmaaiillbbooxx, EEnnccrryypptteedd  ffoollddeerrss, CCoonnffiigguurraattiioonn
          CCoommmmaannddss

   $arrow_cursor , $$aarrrrooww__ccuurrssoorr
   $ascii_chars , $$aasscciiii__cchhaarrss
   $askbcc , $$aasskkbbcccc
   $askcc , $$aasskkcccc
   $assumed_charset , $$aassssuummeedd__cchhaarrsseett
   <attach-file>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   <attach-key>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   <attach-message>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   attachments, AAttttaacchhmmeenntt  SSeeaarrcchhiinngg  aanndd  CCoouunnttiinngg
   $attach_format , $$aattttaacchh__ffoorrmmaatt
   $attach_remind_regexp , $$aattttaacchh__rreemmiinndd__rreeggeexxpp
   $attach_sep , $$aattttaacchh__sseepp
   $attach_split , $$aattttaacchh__sspplliitt
   $attribution, CChhaannggee  sseettttiinnggss  bbaasseedd  uuppoonn  mmeessssaaggee  rreecciippiieennttss,
          $$aattttrriibbuuttiioonn

   $auto_tag, UUssiinngg  TTaaggss
   $autoedit , $$aauuttooeeddiitt
   $auto_tag , $$aauuttoo__ttaagg
   auto_view, TThhee  PPaaggeerr, OOppttiioonnaall  FFiieellddss, SSeeaarrcchh  OOrrddeerr, MMIIMMEE  AAuuttoovviieeww,
          MMIIMMEE  MMuullttiippaarrtt//AAlltteerrnnaattiivvee, CCoonnffiigguurraattiioonn  CCoommmmaannddss

B

   <backspace>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   <backward-char>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   <backward-word>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   $beep , $$bbeeeepp
   $beep_new , $$bbeeeepp__nneeww
   bind, EEddiittiinngg  IInnppuutt  FFiieellddss, CChhaannggiinngg  tthhee  ddeeffaauulltt  kkeeyy  bbiinnddiinnggss,
          KKeeyybbooaarrdd  mmaaccrrooss, CCoonnffiigguurraattiioonn  CCoommmmaannddss

   <bol>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   <bottom>, ppaaggeerr
   <bottom-page>, ggeenneerriicc
   <bounce>, SSeennddiinngg  MMaaiill, $$bboouunnccee
   <bounce-message>, iinnddeexx, ppaaggeerr, aattttaacchh
   $bounce_delivered , $$bboouunnccee__ddeelliivveerreedd
   $braille_friendly , $$bbrraaiillllee__ffrriieennddllyy
   <buffy-cycle>, eeddiittoorr

C

   <capitalize-word>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   $certificate_file , $$cceerrttiiffiiccaattee__ffiillee
   <change-dir>, bbrroowwsseerr
   <change-folder>, iinnddeexx, ppaaggeerr
   <change-folder-readonly>, iinnddeexx, ppaaggeerr
   $charset , $$cchhaarrsseett
   charset-hook, DDeeffiinniinngg  aalliiaasseess  ffoorr  cchhaarraacctteerr  sseettss, CCoonnffiigguurraattiioonn
          CCoommmmaannddss

   <check-new>, bbrroowwsseerr
   <check-traditional-pgp>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, iinnddeexx, ppaaggeerr
   $check_new , $$cchheecckk__nneeww
   <clear-flag>, iinnddeexx
   close-hook, CCoommpprreesssseedd  ffoollddeerrss  SSuuppppoorrtt  ((OOPPTTIIOONNAALL)), WWrriittee  aa  ccoommpprreesssseedd
          mmaaiillbbooxx, AAppppeenndd  aa  mmeessssaaggee  ttoo  aa  ccoommpprreesssseedd  mmaaiillbbooxx,
          CCoonnffiigguurraattiioonn  CCoommmmaannddss

   <collapse-all>, TThhrreeaaddeedd  MMooddee
   <collapse-parts>, aattttaacchh
   <collapse-thread>, TThhrreeaaddeedd  MMooddee
   $collapse_unread , $$ccoollllaappssee__uunnrreeaadd
   color, TThhee  PPaaggeerr, UUssiinngg  ccoolloorr  aanndd  mmoonnoo  vviiddeeoo  aattttrriibbuutteess, CCoonnffiigguurraattiioonn
          CCoommmmaannddss

   $COLORFGBG, UUssiinngg  ccoolloorr  aanndd  mmoonnoo  vviiddeeoo  aattttrriibbuutteess
   <complete>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   <complete-query>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   <compose>, SSeennddiinngg  MMaaiill
   $compose_format , $$ccoommppoossee__ffoorrmmaatt
   $config_charset , $$ccoonnffiigg__cchhaarrsseett
   $confirmappend , $$ccoonnffiirrmmaappppeenndd
   $confirmcreate , $$ccoonnffiirrmmccrreeaattee
   $connect_timeout , $$ccoonnnneecctt__ttiimmeeoouutt
   $content_type , $$ccoonntteenntt__ttyyppee
   $copy , $$ccooppyy
   <copy-file>, ccoommppoossee
   <copy-message>, iinnddeexx, ppaaggeerr
   $count_attachments, AAttttaacchhmmeenntt  SSeeaarrcchhiinngg  aanndd  CCoouunnttiinngg
   $count_attachments , $$ccoouunntt__aattttaacchhmmeennttss
   <create-alias>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, DDeeffiinniinngg//UUssiinngg  aalliiaasseess,
          iinnddeexx, ppaaggeerr, qquueerryy

   $crypt_autoencrypt , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $crypt_autosign , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   crypt-hook, CChhoooossiinngg  tthhee  ccrryyppttooggrraapphhiicc  kkeeyy  ooff  tthhee  rreecciippiieenntt,
          CCoonnffiigguurraattiioonn  CCoommmmaannddss

   $crypt_replyencrypt , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $crypt_replysign , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $crypt_replysignencrypted , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $crypt_verify_sig , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $crypt_autoencrypt , $$ccrryypptt__aauuttooeennccrryypptt
   $crypt_autopgp , $$ccrryypptt__aauuttooppggpp
   $crypt_autosign , $$ccrryypptt__aauuttoossiiggnn
   $crypt_autosmime , $$ccrryypptt__aauuttoossmmiimmee
   $crypt_replyencrypt , $$ccrryypptt__rreeppllyyeennccrryypptt
   $crypt_replysign , $$ccrryypptt__rreeppllyyssiiggnn
   $crypt_replysignencrypted , $$ccrryypptt__rreeppllyyssiiggnneennccrryypptteedd
   $crypt_timestamp , $$ccrryypptt__ttiimmeessttaammpp
   $crypt_use_gpgme , $$ccrryypptt__uussee__ggppggmmee
   $crypt_verify_sig , $$ccrryypptt__vveerriiffyy__ssiigg
   <current-bottom>, ggeenneerriicc
   <current-middle>, ggeenneerriicc
   <current-top>, ggeenneerriicc

D

   $date_format , $$ddaattee__ffoorrmmaatt
   $debug_level , $$ddeebbuugg__lleevveell
   <decode-copy>, iinnddeexx
   <decode-save>, iinnddeexx, ppaaggeerr
   default-hook, MMeessssaaggee  MMaattcchhiinngg  iinn  HHooookkss
   $default_hook , $$ddeeffaauulltt__hhooookk
   $delete , $$ddeelleettee
   <delete-char>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   <delete-entry>, aattttaacchh, ppoossttppoonnee
   <delete-message>, iinnddeexx, ppaaggeerr
   <delete-pattern>, iinnddeexx
   $delete_space, AAddddiittiioonnaall  NNootteess
   <delete-subthread>, TThhrreeaaddeedd  MMooddee, iinnddeexx, ppaaggeerr
   <delete-thread>, TThhrreeaaddeedd  MMooddee, iinnddeexx, ppaaggeerr
   $delete_space , $$ddeelleettee__ssppaaccee
   $delete_untag , $$ddeelleettee__uunnttaagg
   <detach-file>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   $digest_collapse , $$ddiiggeesstt__ccoollllaappssee
   <display-address>, iinnddeexx, ppaaggeerr
   <display-message>, iinnddeexx
   <display-toggle-weed>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, iinnddeexx, ppaaggeerr, aattttaacchh,
          ccoommppoossee

   $display_filter , $$ddiissppllaayy__ffiilltteerr
   $dotlock_program , $$ddoottlloocckk__pprrooggrraamm
   <downcase-word>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   $dsn_notify, DDeelliivveerryy  SSttaattuuss  NNoottiiffiiccaattiioonn  ((DDSSNN))  SSuuppppoorrtt
   $dsn_return, DDeelliivveerryy  SSttaattuuss  NNoottiiffiiccaattiioonn  ((DDSSNN))  SSuuppppoorrtt
   $dsn_notify , $$ddssnn__nnoottiiffyy
   $dsn_return , $$ddssnn__rreettuurrnn
   $duplicate_threads , $$dduupplliiccaattee__tthhrreeaaddss

E

   <edit>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, iinnddeexx, ppaaggeerr, ccoommppoossee
   <edit-bcc>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   <edit-cc>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   <edit-description>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   <edit-encoding>, ccoommppoossee
   <edit-fcc>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   <edit-file>, ccoommppoossee
   <edit-from>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   $edit_headers, EEddiittiinngg  tthhee  mmeessssaaggee  hheeaaddeerr, UUsseerr  ddeeffiinneedd  hheeaaddeerrss,
          mmaaiillttoo::--ssttyyllee  lliinnkkss, CCoonnffiigguurraattiioonn  vvaarriiaabblleess, ccoommppoossee

   <edit-mime>, ccoommppoossee
   <edit-reply-to>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   <edit-subject>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   <edit-to>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   <edit-type>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, iinnddeexx, ppaaggeerr, aattttaacchh, ccoommppoossee
   $EDITOR, MMaannuuaall  CCoonnvveennttiioonnss, CCoommppoossiinngg  nneeww  mmeessssaaggeess
   $editor , $$eeddiittoorr
   $editor_headers, EEddiittiinngg  tthhee  mmeessssaaggee  hheeaaddeerr, DDeeffiinniinngg//UUssiinngg  aalliiaasseess
   $editor_headers , $$eeddiittoorr__hheeaaddeerrss
   $edit_headers , $$eeddiitt__hheeaaddeerrss
   $encode_from , $$eennccooddee__ffrroomm
   <enter-command>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, ggeenneerriicc, ppaaggeerr
   <enter-mask>, bbrroowwsseerr
   $entropy_file , $$eennttrrooppyy__ffiillee
   $envelope_from_address , $$eennvveellooppee__ffrroomm__aaddddrreessss
   <eol>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   $escape , $$eessccaappee
   exec, EExxeeccuuttiinngg  ffuunnccttiioonnss, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   <exit>, ggeenneerriicc, iinnddeexx, ppaaggeerr
   <extract-keys>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, iinnddeexx, ppaaggeerr, aattttaacchh

F

   $fast_reply , $$ffaasstt__rreeppllyy
   fcc-hook, SSppeecciiffyy  ddeeffaauulltt  FFcccc::  mmaaiillbbooxx  wwhheenn  ccoommppoossiinngg, SSppeecciiffyy  ddeeffaauulltt
          ssaavvee  ffiilleennaammee  aanndd  ddeeffaauulltt  FFcccc::  mmaaiillbbooxx  aatt  oonnccee, UUssiinngg  HHooookkss,
          MMeessssaaggee  MMaattcchhiinngg  iinn  HHooookkss, CCoonnffiigguurraattiioonn  CCoommmmaannddss

   fcc-save-hook, SSppeecciiffyy  ddeeffaauulltt  ssaavvee  ffiilleennaammee, SSppeecciiffyy  ddeeffaauulltt  FFcccc::
          mmaaiillbbooxx  wwhheenn  ccoommppoossiinngg, SSppeecciiffyy  ddeeffaauulltt  ssaavvee  ffiilleennaammee  aanndd
          ddeeffaauulltt  FFcccc::  mmaaiillbbooxx  aatt  oonnccee, UUssiinngg  HHooookkss, CCoonnffiigguurraattiioonn
          CCoommmmaannddss

   $fcc_attach , $$ffcccc__aattttaacchh
   $fcc_clear , $$ffcccc__cclleeaarr
   <fetch-mail>, iinnddeexx
   $file_charset , $$ffiillee__cchhaarrsseett
   <filter-entry>, ccoommppoossee
   <first-entry>, MMoovviinngg  AArroouunndd  iinn  MMeennuuss, ggeenneerriicc
   <flag-message>, iinnddeexx, ppaaggeerr
   $folder, CCoonnffiigguurraattiioonn  VVaarriiaabblleess, DDeeffiinniinngg  mmaaiillbbooxxeess  wwhhiicchh  rreecceeiivvee
          mmaaiill, MMaaiillbbooxx  SShhoorrttccuuttss, $$ffoollddeerr

   folder-hook, SSeettttiinngg  vvaarriiaabblleess  bbaasseedd  uuppoonn  mmaaiillbbooxx, SSppaamm  ddeetteeccttiioonn,
          UUssiinngg  HHooookkss, MMaannaaggiinngg  mmuullttiippllee  IIMMAAPP//PPOOPP//NNNNTTPP  aaccccoouunnttss
          ((OOPPTTIIOONNAALL)), CCoonnffiigguurraattiioonn  CCoommmmaannddss

   $folder_format , $$ffoollddeerr__ffoorrmmaatt
   $followup_to, MMaaiilliinngg  lliissttss, HHaannddlliinngg  MMaaiilliinngg  LLiissttss
   $followup_to , $$ffoolllloowwuupp__ttoo
   $force_buffy_check , $$ffoorrccee__bbuuffffyy__cchheecckk
   $force_list_reply , $$ffoorrccee__lliisstt__rreeppllyy
   $force_name , $$ffoorrccee__nnaammee
   <forget-passphrase>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, CCoommppoossiinngg  nneeww  mmeessssaaggeess,
          iinnddeexx, ppaaggeerr, ccoommppoossee

   <forward>, SSeennddiinngg  MMaaiill
   <forward-char>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   $forward_decode , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $forward_decrypt , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $forward_format , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   <forward-message>, iinnddeexx, ppaaggeerr, aattttaacchh
   $forward_quote , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   <forward-word>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   $forward_decode , $$ffoorrwwaarrdd__ddeeccooddee
   $forward_decrypt , $$ffoorrwwaarrdd__ddeeccrryypptt
   $forward_edit , $$ffoorrwwaarrdd__eeddiitt
   $forward_format , $$ffoorrwwaarrdd__ffoorrmmaatt
   $forward_quote , $$ffoorrwwaarrdd__qquuoottee
   $from , $$ffrroomm

G

   $gecos_mask , $$ggeeccooss__mmaasskk
   <group-reply>, SSeennddiinngg  MMaaiill, iinnddeexx, ppaaggeerr, aattttaacchh

H

   <half-down>, ggeenneerriicc, ppaaggeerr
   <half-up>, ggeenneerriicc, ppaaggeerr
   $hdrs , $$hhddrrss
   hdr_order, DDeeffiinniinngg  tthhee  oorrddeerr  ooff  hheeaaddeerrss  wwhheenn  vviieewwiinngg  mmeessssaaggeess,
          CCoonnffiigguurraattiioonn  CCoommmmaannddss

   $header , $$hheeaaddeerr
   $header_cache , $$hheeaaddeerr__ccaacchhee
   $header_cache_compress , $$hheeaaddeerr__ccaacchhee__ccoommpprreessss
   <help>, MMoovviinngg  AArroouunndd  iinn  MMeennuuss, $$hheellpp, ggeenneerriicc, ppaaggeerr
   $hidden_host , $$hhiiddddeenn__hhoosstt
   $hide_limited , $$hhiiddee__lliimmiitteedd
   $hide_missing , $$hhiiddee__mmiissssiinngg
   $hide_thread_subject , $$hhiiddee__tthhrreeaadd__ssuubbjjeecctt
   $hide_top_limited , $$hhiiddee__ttoopp__lliimmiitteedd
   $hide_top_missing , $$hhiiddee__ttoopp__mmiissssiinngg
   $history , $$hhiissttoorryy
   <history-down>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   <history-up>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   $HOME, MMIIMMEE  TTyyppee  ccoonnffiigguurraattiioonn  wwiitthh  mmiimmee..ttyyppeess, MMIIMMEE  VViieewweerr
          ccoonnffiigguurraattiioonn  wwiitthh  mmaaiillccaapp

   $honor_followup_to, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, HHaannddlliinngg  MMaaiilliinngg  LLiissttss
   $honor_followup_to , $$hhoonnoorr__ffoolllloowwuupp__ttoo
   $HOSTNAME, EEnnvviirroonnmmeenntt  VVaarriiaabblleess
   $hostname , $$hhoossttnnaammee

I

   iconv-hook, DDeeffiinniinngg  aalliiaasseess  ffoorr  cchhaarraacctteerr  sseettss
   ignore, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, IIggnnoorriinngg  ((wweeeeddiinngg))  uunnwwaanntteedd  mmeessssaaggee
          hheeaaddeerrss, CCoonnffiigguurraattiioonn  CCoommmmaannddss

   $ignore_list_reply_to , $$iiggnnoorree__lliisstt__rreeppllyy__ttoo
   $imap_authenticators, AAuutthheennttiiccaattiioonn
   $imap_home_namespace, CCoonnffiigguurraattiioonn  VVaarriiaabblleess
   $imap_list_subscribed, IIMMAAPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))
   $imap_mail_check, MMaannuuaall  CCoonnvveennttiioonnss, CCoonnddiittiioonnaall  ppaarrttss, IIMMAAPP  SSuuppppoorrtt
          ((OOPPTTIIOONNAALL))

   $imap_pass, AAuutthheennttiiccaattiioonn
   $imap_user, AAuutthheennttiiccaattiioonn
   $imap_authenticators , $$iimmaapp__aauutthheennttiiccaattoorrss
   $imap_check_subscribed , $$iimmaapp__cchheecckk__ssuubbssccrriibbeedd
   $imap_delim_chars , $$iimmaapp__ddeelliimm__cchhaarrss
   $imap_headers , $$iimmaapp__hheeaaddeerrss
   $imap_home_namespace , $$iimmaapp__hhoommee__nnaammeessppaaccee
   $imap_keepalive , $$iimmaapp__kkeeeeppaalliivvee
   $imap_list_subscribed , $$iimmaapp__lliisstt__ssuubbssccrriibbeedd
   $imap_login , $$iimmaapp__llooggiinn
   $imap_mail_check , $$iimmaapp__mmaaiill__cchheecckk
   $imap_pass , $$iimmaapp__ppaassss
   $imap_passive , $$iimmaapp__ppaassssiivvee
   $imap_peek , $$iimmaapp__ppeeeekk
   $imap_reconnect , $$iimmaapp__rreeccoonnnneecctt
   $imap_servernoise , $$iimmaapp__sseerrvveerrnnooiissee
   $imap_user , $$iimmaapp__uusseerr
   $implicit_autoview , $$iimmpplliicciitt__aauuttoovviieeww
   $include , $$iinncclluuddee
   $include_onlyfirst , $$iinncclluuddee__oonnllyyffiirrsstt
   $indent_string , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $indent_string , $$iinnddeenntt__ssttrriinngg
   $index_format, TThhrreeaaddeedd  MMooddee, SSppaamm  ddeetteeccttiioonn, HHaannddlliinngg  MMaaiilliinngg  LLiissttss,
          CCoonnffiigguurraattiioonn  vvaarriiaabblleess

   $index_format , $$iinnddeexx__ffoorrmmaatt
   <ispell>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, $$iissppeellll, ccoommppoossee

J

   <jump>, ggeenneerriicc

K

   $keep_flagged , $$kkeeeepp__ffllaaggggeedd
   <kill-eol>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   <kill-eow>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   <kill-line>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   <kill-word>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr

L

   <last-entry>, MMoovviinngg  AArroouunndd  iinn  MMeennuuss, ggeenneerriicc
   <limit>, iinnddeexx
   <list-reply>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, SSeennddiinngg  MMaaiill, iinnddeexx, ppaaggeerr,
          aattttaacchh

   lists, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, MMaaiilliinngg  lliissttss, HHaannddlliinngg  MMaaiilliinngg  LLiissttss,
          CCoonnffiigguurraattiioonn  CCoommmmaannddss

   $locale, CChhaannggee  sseettttiinnggss  bbaasseedd  uuppoonn  mmeessssaaggee  rreecciippiieennttss, $$llooccaallee

M

   macro, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, KKeeyybbooaarrdd  mmaaccrrooss, AAddddiinngg  kkeeyy  sseeqquueenncceess
          ttoo  tthhee  kkeeyybbooaarrdd  bbuuffffeerr, UUssiinngg  TTaaggss, CCoonnffiigguurraattiioonn  CCoommmmaannddss

   <mail>, iinnddeexx, ppaaggeerr, qquueerryy
   <mail-key>, SSeennddiinngg  MMaaiill, iinnddeexx, ppaaggeerr
   mailboxes, DDeeffiinniinngg  mmaaiillbbooxxeess  wwhhiicchh  rreecceeiivvee  mmaaiill, CCoonnffiigguurraattiioonn
          CCoommmmaannddss

   $mailcap_path, mmaaiillccaapp
   $mailcap_sanitize, SSeeccuurree  uussee  ooff  mmaaiillccaapp, mmaaiillccaapp
   $mailcap_path , $$mmaaiillccaapp__ppaatthh
   $mailcap_sanitize , $$mmaaiillccaapp__ssaanniittiizzee
   $maildir_header_cache_verify , $$mmaaiillddiirr__hheeaaddeerr__ccaacchhee__vveerriiffyy
   $maildir_trash , $$mmaaiillddiirr__ttrraasshh
   $mail_check , $$mmaaiill__cchheecckk
   <mark-as-new>, ppaaggeerr
   $markers , $$mmaarrkkeerrss
   $mark_old , $$mmaarrkk__oolldd
   $mask , $$mmaasskk
   $max_display_recips , $$mmaaxx__ddiissppllaayy__rreecciippss
   $max_line_length , $$mmaaxx__lliinnee__lleennggtthh
   $mbox, MMaaiillbbooxx  SShhoorrttccuuttss, $$mmbbooxx
   mbox-hook, UUssiinngg  MMuullttiippllee  ssppooooll  mmaaiillbbooxxeess, UUssiinngg  HHooookkss, CCoonnffiigguurraattiioonn
          CCoommmmaannddss

   $mbox_type, MMaaiillbbooxx  FFoorrmmaattss, AAppppeenndd  aa  mmeessssaaggee  ttoo  aa  ccoommpprreesssseedd  mmaaiillbbooxx
   $mbox_type , $$mmbbooxx__ttyyppee
   $menu_context , $$mmeennuu__ccoonntteexxtt
   $menu_move_off , $$mmeennuu__mmoovvee__ooffff
   $menu_scroll , $$mmeennuu__ssccrroollll
   $message_format , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   message-hook, CChhaannggee  sseettttiinnggss  bbeeffoorree  ffoorrmmaattttiinngg  aa  mmeessssaaggee, UUssiinngg
          HHooookkss, MMeessssaaggee  MMaattcchhiinngg  iinn  HHooookkss, MMIIMMEE  AAuuttoovviieeww, CCoonnffiigguurraattiioonn
          CCoommmmaannddss

   $message_format , $$mmeessssaaggee__ffoorrmmaatt
   $meta_key , $$mmeettaa__kkeeyy
   $metoo , $$mmeettoooo
   $mh_purge , $$mmhh__ppuurrggee
   $mh_seq_flagged , $$mmhh__sseeqq__ffllaaggggeedd
   $mh_seq_replied , $$mmhh__sseeqq__rreepplliieedd
   $mh_seq_unseen , $$mmhh__sseeqq__uunnsseeeenn
   <middle-page>, ggeenneerriicc
   $mime_forward , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $mime_forward , $$mmiimmee__ffoorrwwaarrdd
   $mime_forward_decode , $$mmiimmee__ffoorrwwaarrdd__ddeeccooddee
   $mime_forward_rest , $$mmiimmee__ffoorrwwaarrdd__rreesstt
   mime_lookup, MMIIMMEE  LLooookkuupp, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   $mix_entry_format, SSeennddiinngg  aannoonnyymmoouuss  mmeessssaaggeess  vviiaa  mmiixxmmaasstteerr
   $mixmaster , $$mmiixxmmaasstteerr
   $mix_entry_format , $$mmiixx__eennttrryy__ffoorrmmaatt
   mono, UUssiinngg  ccoolloorr  aanndd  mmoonnoo  vviiddeeoo  aattttrriibbuutteess, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   $move , $$mmoovvee
   $msgid_format, MMeessssaaggee--IIDD::  hheeaaddeerrss
   $msgid_format , $$mmssggiidd__ffoorrmmaatt
   $muttng_bindir , $$mmuuttttnngg__bbiinnddiirr
   $muttng_docdir , $$mmuuttttnngg__ddooccddiirr
   $muttng_folder_name , $$mmuuttttnngg__ffoollddeerr__nnaammee
   $muttng_folder_path , $$mmuuttttnngg__ffoollddeerr__ppaatthh
   $muttng_hcache_backend , $$mmuuttttnngg__hhccaacchhee__bbaacckkeenndd
   $muttng_pwd , $$mmuuttttnngg__ppwwdd
   $muttng_revision , $$mmuuttttnngg__rreevviissiioonn
   $muttng_sysconfdir , $$mmuuttttnngg__ssyyssccoonnffddiirr
   $muttng_version , $$mmuuttttnngg__vveerrssiioonn
   my_hdr, UUsseerr  ddeeffiinneedd  hheeaaddeerrss, CCoonnffiigguurraattiioonn  CCoommmmaannddss

N

   $narrow_tree , $$nnaarrrrooww__ttrreeee
   $net_inc , $$nneett__iinncc
   <new-mime>, ccoommppoossee
   <next-entry>, MMoovviinngg  AArroouunndd  iinn  MMeennuuss, ggeenneerriicc, ppaaggeerr
   <next-line>, ggeenneerriicc, ppaaggeerr
   <next-new>, iinnddeexx, ppaaggeerr
   <next-new-then-unread>, iinnddeexx, ppaaggeerr
   <next-page>, ggeenneerriicc, ppaaggeerr
   <next-subthread>, TThhrreeaaddeedd  MMooddee, iinnddeexx, ppaaggeerr
   <next-thread>, TThhrreeaaddeedd  MMooddee, iinnddeexx, ppaaggeerr
   <next-undeleted>, iinnddeexx, ppaaggeerr
   <next-unread>, iinnddeexx, ppaaggeerr
   $nntp_ask_followup_to , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_ask_x_comment_to , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_cache_dir , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_catchup , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_followup_to_poster , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_group_index_format , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_host , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_inews , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_mail_check , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_mime_subject , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_newsrc, NNNNTTPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL)), CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_post_moderated , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_save_unsubscribed , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_show_new_news , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_show_only_unread , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $nntp_x_comment_to , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $NNTPSERVER, NNNNTTPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))
   $nntp_ask_followup_to , $$nnnnttpp__aasskk__ffoolllloowwuupp__ttoo
   $nntp_ask_x_comment_to , $$nnnnttpp__aasskk__xx__ccoommmmeenntt__ttoo
   $nntp_cache_dir , $$nnnnttpp__ccaacchhee__ddiirr
   $nntp_catchup , $$nnnnttpp__ccaattcchhuupp
   $nntp_context , $$nnnnttpp__ccoonntteexxtt
   $nntp_followup_to_poster , $$nnnnttpp__ffoolllloowwuupp__ttoo__ppoosstteerr
   $nntp_group_index_format , $$nnnnttpp__ggrroouupp__iinnddeexx__ffoorrmmaatt
   $nntp_host , $$nnnnttpp__hhoosstt
   $nntp_inews , $$nnnnttpp__iinneewwss
   $nntp_load_description , $$nnnnttpp__llooaadd__ddeessccrriippttiioonn
   $nntp_mail_check , $$nnnnttpp__mmaaiill__cchheecckk
   $nntp_mime_subject , $$nnnnttpp__mmiimmee__ssuubbjjeecctt
   $nntp_newsrc , $$nnnnttpp__nneewwssrrcc
   $nntp_pass , $$nnnnttpp__ppaassss
   $nntp_post_moderated , $$nnnnttpp__ppoosstt__mmooddeerraatteedd
   $nntp_reconnect , $$nnnnttpp__rreeccoonnnneecctt
   $nntp_save_unsubscribed , $$nnnnttpp__ssaavvee__uunnssuubbssccrriibbeedd
   $nntp_show_new_news , $$nnnnttpp__sshhooww__nneeww__nneewwss
   $nntp_show_only_unread , $$nnnnttpp__sshhooww__oonnllyy__uunnrreeaadd
   $nntp_user , $$nnnnttpp__uusseerr
   $nntp_x_comment_to , $$nnnnttpp__xx__ccoommmmeenntt__ttoo
   nospam, SSppaamm  ddeetteeccttiioonn, CCoonnffiigguurraattiioonn  CCoommmmaannddss

O

   open-hook, CCoommpprreesssseedd  ffoollddeerrss  SSuuppppoorrtt  ((OOPPTTIIOONNAALL)), OOppeenn  aa  ccoommpprreesssseedd
          mmaaiillbbooxx  ffoorr  rreeaaddiinngg, WWrriittee  aa  ccoommpprreesssseedd  mmaaiillbbooxx, AAppppeenndd  aa
          mmeessssaaggee  ttoo  aa  ccoommpprreesssseedd  mmaaiillbbooxx, CCoonnffiigguurraattiioonn  CCoommmmaannddss

   $operating_system , $$ooppeerraattiinngg__ssyysstteemm

P

   <page-down>, MMoovviinngg  AArroouunndd  iinn  MMeennuuss
   <page-up>, MMoovviinngg  AArroouunndd  iinn  MMeennuuss
   $pager , $$ppaaggeerr
   $pager_index_lines, CCoonnddiittiioonnaall  ppaarrttss
   $pager_context , $$ppaaggeerr__ccoonntteexxtt
   $pager_format , $$ppaaggeerr__ffoorrmmaatt
   $pager_index_lines , $$ppaaggeerr__iinnddeexx__lliinneess
   $pager_stop , $$ppaaggeerr__ssttoopp
   <parent-message>, TThhrreeaaddeedd  MMooddee, iinnddeexx, ppaaggeerr
   pattern-hook, SSppeecciiffyy  ddeeffaauulltt  ssaavvee  ffiilleennaammee, SSppeecciiffyy  ddeeffaauulltt  FFcccc::
          mmaaiillbbooxx  wwhheenn  ccoommppoossiinngg, CChhaannggee  sseettttiinnggss  bbaasseedd  uuppoonn  mmeessssaaggee
          rreecciippiieennttss, CChhaannggee  sseettttiinnggss  bbeeffoorree  ffoorrmmaattttiinngg  aa  mmeessssaaggee

   $pgp_autoinline , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $pgp_entry_format, UUssiinngg  MMuutttt--nngg  wwiitthh  PPGGPP
   <pgp-menu>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   $pgp_replyinline , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $pgp_sign_as, UUssiinngg  MMuutttt--nngg  wwiitthh  PPGGPP
   $pgp_autoinline , $$ppggpp__aauuttooiinnlliinnee
   $pgp_auto_decode , $$ppggpp__aauuttoo__ddeeccooddee
   $pgp_check_exit , $$ppggpp__cchheecckk__eexxiitt
   $pgp_clearsign_command , $$ppggpp__cclleeaarrssiiggnn__ccoommmmaanndd
   $pgp_decode_command , $$ppggpp__ddeeccooddee__ccoommmmaanndd
   $pgp_decrypt_command , $$ppggpp__ddeeccrryypptt__ccoommmmaanndd
   $pgp_encrypt_only_command , $$ppggpp__eennccrryypptt__oonnllyy__ccoommmmaanndd
   $pgp_encrypt_sign_command , $$ppggpp__eennccrryypptt__ssiiggnn__ccoommmmaanndd
   $pgp_entry_format , $$ppggpp__eennttrryy__ffoorrmmaatt
   $pgp_export_command , $$ppggpp__eexxppoorrtt__ccoommmmaanndd
   $pgp_getkeys_command , $$ppggpp__ggeettkkeeyyss__ccoommmmaanndd
   $pgp_good_sign , $$ppggpp__ggoooodd__ssiiggnn
   $pgp_ignore_subkeys , $$ppggpp__iiggnnoorree__ssuubbkkeeyyss
   $pgp_import_command , $$ppggpp__iimmppoorrtt__ccoommmmaanndd
   $pgp_list_pubring_command , $$ppggpp__lliisstt__ppuubbrriinngg__ccoommmmaanndd
   $pgp_list_secring_command , $$ppggpp__lliisstt__sseeccrriinngg__ccoommmmaanndd
   $pgp_long_ids , $$ppggpp__lloonngg__iiddss
   $pgp_mime_auto , $$ppggpp__mmiimmee__aauuttoo
   $pgp_replyinline , $$ppggpp__rreeppllyyiinnlliinnee
   $pgp_retainable_sigs , $$ppggpp__rreettaaiinnaabbllee__ssiiggss
   $pgp_show_unusable , $$ppggpp__sshhooww__uunnuussaabbllee
   $pgp_sign_as , $$ppggpp__ssiiggnn__aass
   $pgp_sign_command , $$ppggpp__ssiiggnn__ccoommmmaanndd
   $pgp_sort_keys , $$ppggpp__ssoorrtt__kkeeyyss
   $pgp_strict_enc , $$ppggpp__ssttrriicctt__eenncc
   $pgp_timeout , $$ppggpp__ttiimmeeoouutt
   $pgp_use_gpg_agent , $$ppggpp__uussee__ggppgg__aaggeenntt
   $pgp_verify_command , $$ppggpp__vveerriiffyy__ccoommmmaanndd
   $pgp_verify_key_command , $$ppggpp__vveerriiffyy__kkeeyy__ccoommmmaanndd
   $pipe_decode, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss
   <pipe-entry>, aattttaacchh, ccoommppoossee
   <pipe-message>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, iinnddeexx, ppaaggeerr
   $pipe_split, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss
   $pipe_decode , $$ppiippee__ddeeccooddee
   $pipe_sep , $$ppiippee__sseepp
   $pipe_split , $$ppiippee__sspplliitt
   $pop_mail_check, PPOOPP33  SSuuppppoorrtt  ((OOPPTTIIOONNAALL)), CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $pop_authenticators , $$ppoopp__aauutthheennttiiccaattoorrss
   $pop_auth_try_all , $$ppoopp__aauutthh__ttrryy__aallll
   $pop_delete , $$ppoopp__ddeelleettee
   $pop_host , $$ppoopp__hhoosstt
   $pop_last , $$ppoopp__llaasstt
   $pop_mail_check , $$ppoopp__mmaaiill__cchheecckk
   $pop_pass , $$ppoopp__ppaassss
   $pop_reconnect , $$ppoopp__rreeccoonnnneecctt
   $pop_user , $$ppoopp__uusseerr
   $post_indent_string , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $postpone, PPoossttppoonniinngg  MMaaiill, $$ppoossttppoonnee
   <postpone-message>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   $postponed, PPoossttppoonniinngg  MMaaiill, $$ppoossttppoonneedd
   $post_indent_string , $$ppoosstt__iinnddeenntt__ssttrriinngg
   $preconnect , $$pprreeccoonnnneecctt
   <previous-entry>, MMoovviinngg  AArroouunndd  iinn  MMeennuuss, ggeenneerriicc, ppaaggeerr
   <previous-line>, ggeenneerriicc, ppaaggeerr
   <previous-new>, iinnddeexx, ppaaggeerr
   <previous-new-then-unread>, iinnddeexx, ppaaggeerr
   <previous-page>, ggeenneerriicc, iinnddeexx, ppaaggeerr
   <previous-subthread>, TThhrreeaaddeedd  MMooddee, iinnddeexx, ppaaggeerr
   <previous-thread>, TThhrreeaaddeedd  MMooddee, iinnddeexx, ppaaggeerr
   <previous-undeleted>, iinnddeexx, ppaaggeerr
   <previous-unread>, iinnddeexx, ppaaggeerr
   $print , $$pprriinntt
   $print_command , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   <print-entry>, aattttaacchh, ccoommppoossee
   <print-message>, iinnddeexx, ppaaggeerr
   $print_command , $$pprriinntt__ccoommmmaanndd
   $print_decode , $$pprriinntt__ddeeccooddee
   $print_split , $$pprriinntt__sspplliitt
   $prompt_after , $$pprroommpptt__aafftteerr
   push, AAddddiinngg  kkeeyy  sseeqquueenncceess  ttoo  tthhee  kkeeyybbooaarrdd  bbuuffffeerr, UUssiinngg  TTaaggss,
          CCoonnffiigguurraattiioonn  CCoommmmaannddss

Q

   <query>, iinnddeexx, qquueerryy
   <query-append>, qquueerryy
   $query_command, EExxtteerrnnaall  AAddddrreessss  QQuueerriieess
   $query_command , $$qquueerryy__ccoommmmaanndd
   <quit>, MMoovviinngg  AArroouunndd  iinn  MMeennuuss, CCoommppoossiinngg  nneeww  mmeessssaaggeess, $$qquuiitt, iinnddeexx,
          ppaaggeerr

   <quote-char>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   $quote_regexp, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, UUssiinngg  ccoolloorr  aanndd  mmoonnoo  vviiddeeoo
          aattttrriibbuutteess

   $quote_empty , $$qquuoottee__eemmppttyy
   $quote_quoted , $$qquuoottee__qquuootteedd
   $quote_regexp , $$qquuoottee__rreeggeexxpp

R

   <read-subthread>, TThhrreeaaddeedd  MMooddee, iinnddeexx, ppaaggeerr
   <read-thread>, TThhrreeaaddeedd  MMooddee, iinnddeexx, ppaaggeerr
   $read_inc , $$rreeaadd__iinncc
   $read_only , $$rreeaadd__oonnllyy
   $realname , $$rreeaallnnaammee
   <rebuild-cache>, ggeenneerriicc
   $recall , $$rreeccaallll
   <recall-message>, iinnddeexx, ppaaggeerr
   $record, EEnnvviirroonnmmeenntt  VVaarriiaabblleess, SSppeecciiffyy  ddeeffaauulltt  FFcccc::  mmaaiillbbooxx  wwhheenn
          ccoommppoossiinngg, MMaaiillbbooxx  SShhoorrttccuuttss, $$rreeccoorrdd

   <redraw-screen>, ppaaggeerr
   <refresh>, ggeenneerriicc
   <rename-file>, ccoommppoossee
   <reply>, SSeennddiinngg  MMaaiill, iinnddeexx, ppaaggeerr, aattttaacchh
   reply-hook, CChhaannggee  sseettttiinnggss  bbaasseedd  uuppoonn  mmeessssaaggee  rreecciippiieennttss,
          CCoonnffiigguurraattiioonn  CCoommmmaannddss

   $reply_to, AAlltteerrnnaattiivvee  aaddddrreesssseess, HHaannddlliinngg  MMaaiilliinngg  LLiissttss
   $reply_regexp , $$rreeppllyy__rreeggeexxpp
   $reply_self , $$rreeppllyy__sseellff
   $reply_to , $$rreeppllyy__ttoo
   <resend-message>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, TThhee  AAttttaacchhmmeenntt  MMeennuu, iinnddeexx,
          aattttaacchh

   reset, SSeettttiinngg  vvaarriiaabblleess, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   $resolve , $$rreessoollvvee
   $reverse_alias , $$rreevveerrssee__aalliiaass
   $reverse_name , $$rreevveerrssee__nnaammee
   $reverse_realname , $$rreevveerrssee__rreeaallnnaammee
   RfC

        1524, MMIIMMEE  VViieewweerr  ccoonnffiigguurraattiioonn  wwiitthh  mmaaiillccaapp, CCoommmmaanndd  EExxppaannssiioonn,
                mmaaiillccaapp

        1894, DDeelliivveerryy  SSttaattuuss  NNoottiiffiiccaattiioonn  ((DDSSNN))  SSuuppppoorrtt
        2822, AAggaaiinn::  SSccoorriinngg
        3676, SSeennddiinngg
        822, UUsseerr  ddeeffiinneedd  hheeaaddeerrss

   $rfc2047_parameters , $$rrffcc22004477__ppaarraammeetteerrss

S

   $save_empty, CCoommpprreesssseedd  ffoollddeerrss  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))
   <save-entry>, aattttaacchh
   save-hook, SSppeecciiffyy  ddeeffaauulltt  ssaavvee  ffiilleennaammee, SSppeecciiffyy  ddeeffaauulltt  ssaavvee
          ffiilleennaammee  aanndd  ddeeffaauulltt  FFcccc::  mmaaiillbbooxx  aatt  oonnccee, UUssiinngg  HHooookkss, MMeessssaaggee
          MMaattcchhiinngg  iinn  HHooookkss, MMaaiillbbooxx  SShhoorrttccuuttss, CCoonnffiigguurraattiioonn  CCoommmmaannddss

   <save-message>, iinnddeexx, ppaaggeerr
   $save_address , $$ssaavvee__aaddddrreessss
   $save_empty , $$ssaavvee__eemmppttyy
   $save_name , $$ssaavvee__nnaammee
   score, MMeessssaaggee  SSccoorriinngg, CCoonnffiigguurraattiioonn  CCoommmmaannddss, $$ssccoorree
   $score_threshold_delete, MMeessssaaggee  SSccoorriinngg
   $score_threshold_flag, MMeessssaaggee  SSccoorriinngg
   $score_threshold_read, MMeessssaaggee  SSccoorriinngg
   $score_threshold_delete , $$ssccoorree__tthhrreesshhoolldd__ddeelleettee
   $score_threshold_flag , $$ssccoorree__tthhrreesshhoolldd__ffllaagg
   $score_threshold_read , $$ssccoorree__tthhrreesshhoolldd__rreeaadd
   <search>, ggeenneerriicc, ppaaggeerr, aalliiaass, qquueerryy, bbrroowwsseerr
   <search-next>, ggeenneerriicc, ppaaggeerr, aalliiaass, qquueerryy, bbrroowwsseerr
   <search-opposite>, ggeenneerriicc, ppaaggeerr, qquueerryy
   <search-reverse>, ggeenneerriicc, ppaaggeerr, aalliiaass, qquueerryy, bbrroowwsseerr
   <search-toggle>, ppaaggeerr
   <select-entry>, ggeenneerriicc
   <select-new>, bbrroowwsseerr
   send-hook, CChhaannggee  sseettttiinnggss  bbaasseedd  uuppoonn  mmeessssaaggee  rreecciippiieennttss, UUssiinngg  HHooookkss,
          MMeessssaaggee  MMaattcchhiinngg  iinn  HHooookkss, CCoonnffiigguurraattiioonn  CCoommmmaannddss

   <send-message>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   send2-hook, CChhaannggee  sseettttiinnggss  bbaasseedd  uuppoonn  mmeessssaaggee  rreecciippiieennttss
   <senderdecode-copy>, ppaaggeerr
   $sendmail, CChhaannggee  sseettttiinnggss  bbaasseedd  uuppoonn  mmeessssaaggee  rreecciippiieennttss, $$sseennddmmaaiill
   $sendmail_wait , $$sseennddmmaaiill__wwaaiitt
   $send_charset , $$sseenndd__cchhaarrsseett
   set, SSeettttiinngg  vvaarriiaabblleess, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   <set-flag>, iinnddeexx
   $shell , $$sshheellll
   <shell-escape>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, ggeenneerriicc, ppaaggeerr
   <show-limit>, iinnddeexx
   <show-version>, iinnddeexx, ppaaggeerr
   <sidebar-next>, ssiiddeebbaarr
   <sidebar-next-new>, ssiiddeebbaarr
   <sidebar-open>, ssiiddeebbaarr
   <sidebar-previous>, ssiiddeebbaarr
   <sidebar-scroll-down>, ssiiddeebbaarr
   <sidebar-scroll-up>, ssiiddeebbaarr
   $sidebar_shorten_hierarchy , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $sidebar_boundary , $$ssiiddeebbaarr__bboouunnddaarryy
   $sidebar_delim , $$ssiiddeebbaarr__ddeelliimm
   $sidebar_newmail_only , $$ssiiddeebbaarr__nneewwmmaaiill__oonnllyy
   $sidebar_number_format , $$ssiiddeebbaarr__nnuummbbeerr__ffoorrmmaatt
   $sidebar_shorten_hierarchy , $$ssiiddeebbaarr__sshhoorrtteenn__hhiieerraarrcchhyy
   $sidebar_visible , $$ssiiddeebbaarr__vviissiibbllee
   $sidebar_width , $$ssiiddeebbaarr__wwiiddtthh
   $signature, CChhaannggee  sseettttiinnggss  bbaasseedd  uuppoonn  mmeessssaaggee  rreecciippiieennttss, $$ssiiggnnaattuurree
   $signoff_string , $$ssiiggnnooffff__ssttrriinngg
   $sig_dashes , $$ssiigg__ddaasshheess
   $sig_on_top , $$ssiigg__oonn__ttoopp
   $simple_search , $$ssiimmppllee__sseeaarrcchh
   <skip-quoted>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, ppaaggeerr
   $sleep_time , $$sslleeeepp__ttiimmee
   $smart_wrap , $$ssmmaarrtt__wwrraapp
   $smileys , $$ssmmiilleeyyss
   $smime_default_key , CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   <smime-menu>, CCoommppoossiinngg  nneeww  mmeessssaaggeess
   $smime_ask_cert_label , $$ssmmiimmee__aasskk__cceerrtt__llaabbeell
   $smime_ca_location , $$ssmmiimmee__ccaa__llooccaattiioonn
   $smime_certificates , $$ssmmiimmee__cceerrttiiffiiccaatteess
   $smime_decrypt_command , $$ssmmiimmee__ddeeccrryypptt__ccoommmmaanndd
   $smime_decrypt_use_default_key , $$ssmmiimmee__ddeeccrryypptt__uussee__ddeeffaauulltt__kkeeyy
   $smime_default_key , $$ssmmiimmee__ddeeffaauulltt__kkeeyy
   $smime_encrypt_command , $$ssmmiimmee__eennccrryypptt__ccoommmmaanndd
   $smime_encrypt_with , $$ssmmiimmee__eennccrryypptt__wwiitthh
   $smime_get_cert_command , $$ssmmiimmee__ggeett__cceerrtt__ccoommmmaanndd
   $smime_get_cert_email_command , $$ssmmiimmee__ggeett__cceerrtt__eemmaaiill__ccoommmmaanndd
   $smime_get_signer_cert_command , $$ssmmiimmee__ggeett__ssiiggnneerr__cceerrtt__ccoommmmaanndd
   $smime_import_cert_command , $$ssmmiimmee__iimmppoorrtt__cceerrtt__ccoommmmaanndd
   $smime_is_default , $$ssmmiimmee__iiss__ddeeffaauulltt
   $smime_keys , $$ssmmiimmee__kkeeyyss
   $smime_pk7out_command , $$ssmmiimmee__ppkk77oouutt__ccoommmmaanndd
   $smime_sign_command , $$ssmmiimmee__ssiiggnn__ccoommmmaanndd
   $smime_sign_opaque_command , $$ssmmiimmee__ssiiggnn__ooppaaqquuee__ccoommmmaanndd
   $smime_timeout , $$ssmmiimmee__ttiimmeeoouutt
   $smime_verify_command , $$ssmmiimmee__vveerriiffyy__ccoommmmaanndd
   $smime_verify_opaque_command , $$ssmmiimmee__vveerriiffyy__ooppaaqquuee__ccoommmmaanndd
   $smtp_envelope, SSMMTTPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))
   $smtp_host, SSMMTTPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))
   $smtp_pass, SSMMTTPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL)), CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $smtp_use_tls, SSMMTTPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))
   $smtp_user, SSMMTTPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL)), CCoonnffiigguurraattiioonn  vvaarriiaabblleess
   $smtp_host , $$ssmmttpp__hhoosstt
   $smtp_pass , $$ssmmttpp__ppaassss
   $smtp_port , $$ssmmttpp__ppoorrtt
   $smtp_user , $$ssmmttpp__uusseerr
   $smtp_use_tls , $$ssmmttpp__uussee__ttllss
   $sort , $$ssoorrtt, bbrroowwsseerr
   <sort-mailbox>, iinnddeexx
   <sort-reverse>, iinnddeexx, bbrroowwsseerr
   $sort_alias , $$ssoorrtt__aalliiaass
   $sort_aux , $$ssoorrtt__aauuxx
   $sort_browser , $$ssoorrtt__bbrroowwsseerr
   $sort_re , $$ssoorrtt__rree
   source, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, DDeeffiinniinngg//UUssiinngg  aalliiaasseess, RReeaaddiinngg
          iinniittiiaalliizzaattiioonn  ccoommmmaannddss  ffrroomm  aannootthheerr  ffiillee, CCoonnffiigguurraattiioonn
          CCoommmmaannddss

   spam, SSppaamm  ddeetteeccttiioonn, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   $spam_separator , $$ssppaamm__sseeppaarraattoorr
   $spoolfile, SSeettttiinngg  vvaarriiaabblleess  bbaasseedd  uuppoonn  mmaaiillbbooxx, DDeeffiinniinngg  mmaaiillbbooxxeess
          wwhhiicchh  rreecceeiivvee  mmaaiill, MMaaiillbbooxx  SShhoorrttccuuttss, PPOOPP33  SSuuppppoorrtt  ((OOPPTTIIOONNAALL)),
          $$ssppoooollffiillee

   $ssl_ca_certificates_file , $$ssssll__ccaa__cceerrttiiffiiccaatteess__ffiillee
   $ssl_client_cert , $$ssssll__cclliieenntt__cceerrtt
   $ssl_force_tls , $$ssssll__ffoorrccee__ttllss
   $ssl_min_dh_prime_bits , $$ssssll__mmiinn__ddhh__pprriimmee__bbiittss
   $ssl_starttls , $$ssssll__ssttaarrttttllss
   $ssl_usesystemcerts , $$ssssll__uusseessyysstteemmcceerrttss
   $ssl_use_sslv2 , $$ssssll__uussee__ssssllvv22
   $ssl_use_sslv3 , $$ssssll__uussee__ssssllvv33
   $ssl_use_tlsv1 , $$ssssll__uussee__ttllssvv11
   $status_format, CCoommppoossiinngg  nneeww  mmeessssaaggeess, IInnttrroodduuccttiioonn
   $status_chars , $$ssttaattuuss__cchhaarrss
   $status_format , $$ssttaattuuss__ffoorrmmaatt
   $status_on_top , $$ssttaattuuss__oonn__ttoopp
   $strict_mailto, mmaaiillttoo::--ssttyyllee  lliinnkkss
   $strict_threads, TThhrreeaaddeedd  MMooddee
   $strict_mailto , $$ssttrriicctt__mmaaiillttoo
   $strict_mime , $$ssttrriicctt__mmiimmee
   $strict_threads , $$ssttrriicctt__tthhrreeaaddss
   $strip_was , $$ssttrriipp__wwaass
   $strip_was_regex , $$ssttrriipp__wwaass__rreeggeexx
   $stuff_quoted , $$ssttuuffff__qquuootteedd
   subscribe, MMaaiilliinngg  lliissttss, CCoonnffiigguurraattiioonn  CCoommmmaannddss, bbrroowwsseerr
   $suspend , $$ssuussppeenndd
   <sync-mailbox>, MMaannuuaall  CCoonnvveennttiioonnss, iinnddeexx, ppaaggeerr

T

   <tag-entry>, ggeenneerriicc
   <tag-message>, ppaaggeerr
   <tag-pattern>, iinnddeexx
   <tag-prefix>, ggeenneerriicc
   <tag-prefix-cond>, ggeenneerriicc
   <tag-thread>, TThhrreeaaddeedd  MMooddee, iinnddeexx
   $text_flowed , $$tteexxtt__fflloowweedd
   $thorough_search , $$tthhoorroouugghh__sseeaarrcchh
   $thread_received , $$tthhrreeaadd__rreecceeiivveedd
   $tilde , $$ttiillddee
   $timeout, IIMMAAPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL)), $$ttiimmeeoouutt
   $tmpdir, TTeemmppoorraarryy  FFiilleess, $$ttmmppddiirr
   $to_chars, SSttaattuuss  FFllaaggss
   toggle, SSeettttiinngg  vvaarriiaabblleess, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   <toggle-mailboxes>, bbrroowwsseerr
   <toggle-new>, iinnddeexx
   <toggle-quoted>, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, ppaaggeerr
   <toggle-subscribed>, bbrroowwsseerr
   <toggle-unlink>, ccoommppoossee
   <toggle-write>, iinnddeexx
   <top>, ppaaggeerr
   <top-page>, ggeenneerriicc
   $to_chars , $$ttoo__cchhaarrss
   <transpose-chars>, eeddiittoorr
   $trash , $$ttrraasshh
   $tunnel , $$ttuunnnneell

U

   $umask, TTeemmppoorraarryy  FFiilleess, $$uummaasskk
   unalias, DDeeffiinniinngg//UUssiinngg  aalliiaasseess, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   unalternates, AAlltteerrnnaattiivvee  aaddddrreesssseess, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   unalternative_order, MMIIMMEE  MMuullttiippaarrtt//AAlltteerrnnaattiivvee, CCoonnffiigguurraattiioonn
          CCoommmmaannddss

   unattachments, AAttttaacchhmmeenntt  SSeeaarrcchhiinngg  aanndd  CCoouunnttiinngg
   unauto_view, MMIIMMEE  AAuuttoovviieeww, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   $uncollapse_jump , $$uunnccoollllaappssee__jjuummpp
   uncolor, UUssiinngg  ccoolloorr  aanndd  mmoonnoo  vviiddeeoo  aattttrriibbuutteess, CCoonnffiigguurraattiioonn  CCoommmmaannddss

   <undelete-entry>, aattttaacchh, ppoossttppoonnee
   <undelete-message>, iinnddeexx, ppaaggeerr
   <undelete-pattern>, iinnddeexx
   <undelete-subthread>, TThhrreeaaddeedd  MMooddee, iinnddeexx, ppaaggeerr
   <undelete-thread>, TThhrreeaaddeedd  MMooddee, iinnddeexx, ppaaggeerr
   unhdr_order, DDeeffiinniinngg  tthhee  oorrddeerr  ooff  hheeaaddeerrss  wwhheenn  vviieewwiinngg  mmeessssaaggeess,
          CCoonnffiigguurraattiioonn  CCoommmmaannddss

   unhook, RReemmoovviinngg  hhooookkss, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   unignore, IIggnnoorriinngg  ((wweeeeddiinngg))  uunnwwaanntteedd  mmeessssaaggee  hheeaaddeerrss, CCoonnffiigguurraattiioonn
          CCoommmmaannddss

   unlists, MMaaiilliinngg  lliissttss, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   unmailboxes, DDeeffiinniinngg  mmaaiillbbooxxeess  wwhhiicchh  rreecceeiivvee  mmaaiill
   unmime_lookup, MMIIMMEE  LLooookkuupp, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   unmono, UUssiinngg  ccoolloorr  aanndd  mmoonnoo  vviiddeeoo  aattttrriibbuutteess, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   unmy_hdr, UUsseerr  ddeeffiinneedd  hheeaaddeerrss, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   unscore, MMeessssaaggee  SSccoorriinngg, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   unset, SSeettttiinngg  vvaarriiaabblleess, CCoonnffiigguurraattiioonn  CCoommmmaannddss
   unsubscribe, MMaaiilliinngg  lliissttss, CCoonnffiigguurraattiioonn  CCoommmmaannddss, bbrroowwsseerr
   <untag-pattern>, iinnddeexx
   <upcase-word>, EEddiittiinngg  IInnppuutt  FFiieellddss, eeddiittoorr
   $use_8bitmime, SSMMTTPP  SSuuppppoorrtt  ((OOPPTTIIOONNAALL))
   $use_8bitmime , $$uussee__88bbiittmmiimmee
   $use_domain , $$uussee__ddoommaaiinn
   $use_envelope_from , $$uussee__eennvveellooppee__ffrroomm
   $use_from , $$uussee__ffrroomm
   $use_idn , $$uussee__iiddnn
   $use_ipv6 , $$uussee__iippvv66

V

   <verify-key>, ppggpp
   <view-attach>, aattttaacchh, ccoommppoossee
   <view-attachments>, iinnddeexx, ppaaggeerr
   <view-file>, bbrroowwsseerr
   <view-mailcap>, aattttaacchh
   <view-name>, ppggpp
   <view-text>, aattttaacchh
   $VISUAL, CCoommppoossiinngg  nneeww  mmeessssaaggeess
   $visual , $$vviissuuaall

W

   $wait_key, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, OOppttiioonnaall  FFiieellddss
   $wait_key , $$wwaaiitt__kkeeyy
   $weed, MMiisscceellllaanneeoouuss  FFuunnccttiioonnss, $$wweeeedd
   <what-key>, ggeenneerriicc
   $wrapmargin , $$wwrraappmmaarrggiinn
   $wrap_search , $$wwrraapp__sseeaarrcchh
   <write-fcc>, CCoommppoossiinngg  nneeww  mmeessssaaggeess, ccoommppoossee
   $write_bcc , $$wwrriittee__bbcccc
   $write_inc , $$wwrriittee__iinncc

X

   $xterm_icon , $$xxtteerrmm__iiccoonn
   $xterm_leave , $$xxtteerrmm__lleeaavvee
   $xterm_set_titles , $$xxtteerrmm__sseett__ttiittlleess
   $xterm_title , $$xxtteerrmm__ttiittllee
