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Edit File: s-nail.rc

#@ /etc/s-nail.rc
#@ Configuration file for S-nail v14.9.22.
#@ The syntax of this file is interpreted as follows:
#@ - Any leading and trailing whitespace (space, tabulator, newline: " \t\n"),
#@   and all members of (the internal variable) *ifs-ws* are removed.
#@ - Empty lines are ignored.
#@ - Any other line is a command line.  Such lines may spread over multiple
#@   lines if a reverse solidus character \ is placed as the last character of
#@   all lines except the final one; any leading whitespace of follow lines is
#@   removed, but trailing whitespace before "escaped newlines" is not.
#@ - The number sign # is the comment-command and causes the (joined) line
#@   (content) to be ignored.
#@ S-nail v14.9.22 / 2021-02-24

## Variables

# The standard POSIX 2008/Cor 2-2016 mandates the following initial settings
# which are established independendly from this file:
# [a]   noallnet, noappend, asksub, noaskbcc, noaskcc, noautoprint,
# [b-e] nobang, nocmd, nocrt, nodebug, nodot, escape="~",
# [f-i] noflipr, nofolder, header, nohold, noignore, noignoreeof,
# [j-o] nokeep, nokeepsave, nometoo, nooutfolder,
# [p-r] nopage, prompt="? ", noquiet, norecord,
# [s]   save, nosendwait, noshowto, nosign, noSign,
# [t-z] toplines="5"
#
# Notes:
# - In this implementation:
#   + *sendwait* is set by default (and has extended meaning).
#   + no*onehop* does not exist.
#     (To pass options through to the MTA, either add them after a "--"
#     separator on the command line or set the *mta-arguments* variable.)
# - *hold, *keep*, and *keepsave* are deliberately set below.
# (Keep in SYNC: mx/nail.h:okeys, ./nail.rc, ./nail.1:"Initial settings"!)

# Adjustments of standard imposed default- as well as other settings follow.
# - Some of the latter are not portable and may thus have no effect with
#   other Mail(1) / mailx(1) / mail(1) programs.
# - "wysh" is one of the "Command modifiers" and is not portable: before v15 it
#   changes the syntax of some old-style commands to sh(1)ell style quoting,
#   also see "COMMANDS" -> "Shell-style argument quoting" in the manual.
# - Availability of entries marked [OPTION] is a compile-time decision.

# If threaded mode is activated, automatically collapse thread.
set autocollapse

# Enter threaded mode automatically.
#set autosort=thread

# Append rather than prepend when writing to mbox automatically.
# Has no effect unless *hold* is unset (it is set below).
# This is a traditional entry and should usually be set.
set append

# Confirm sending of messages:
set asksend

# Uncomment this in order to get coloured output in $PAGER (if possible).
#set colour-pager
# If your $PAGER is less(1) or lv(1) you will usually be served with
#  ? wysh set PAGER=less; environ unset LESS
#  ? wysh set PAGER=lv; environ unset LV

# Assume a CRT-like terminal and invoke $PAGER if output does not fit on
# the screen.  (Set crt=0 to always page; value treated as number of lines.)
set crt

# When entering compose mode, directly startup into $EDITOR, as via `~e'.
# If the value is "v", startup into $VISUAL instead, as via `~v'.
#set editalong=v

# When spawning an editor in compose mode (`~e', `~v', *editalong*), allow
# editing of headers.
set editheaders

# Startup into interactive mode even if the (given) mailbox is empty.
set emptystart

# When `reply'ing etc. name parts and comments are stripped from receiver
# addresses unless this variable is set.
set fullnames

# [OPTION] Add more entries to the history as is done by default.
# The latter will cause the built-in editor to save those entries, too.
# (The *history-file* variable controls persistency of the history.)
set history-gabby=all history-gabby-persist

# Do not move read messages of system mailboxes to MBOX by default since this
# is likely to be irritating for most users today; also see *keepsave*.
set hold

# Quote the original message in replies with "> " as usual on the Internet.
# POSIX mandates tabulator ("wysh set indentprefix=$'\t'") as default.
set indentprefix="> "

# Honour Mail-Followup-To: headers when replying etc.
set followup-to-honour=ask-yes

# Mark messages that have been answered.
set markanswered

# Try to circumvent false or missing MIME Content-Type descriptions.
# Do set a value for extended behaviour (see the manual).
#set mime-counter-evidence
set mime-counter-evidence=0b1111

# Control loading of mime.types(5) file, "s"ystem and/or "u"ser, etc.
# Builtin types exist and may be sufficient.  The default equals "us".
#set mimetypes-load-control

# Do not remove empty (MBOX) system mailboxes.  (_No_ empty (MBOX) mailbox
# at all if $POSIXLY_CORRECT a.k.a. *posix* is set!)
# This may be relevant for privacy since other users could otherwise create
# them with different permissions.
set keep

# Do not move `save'd or `write'n message to $MBOX by default since this is
# likely to be irritating for most users today; also see *hold*.
set keepsave

# An informational prompt (and see "Gimmicks" below).
# Of interest may also be \${^ERRQUEUE-EXISTS} and \${^ERRQUEUE-COUNT}.
# Note the _real_ evaluation occurs once used (see *prompt* manual entry).
#wysh set prompt='?\$?!\$!/\$^ERRNAME[\${account-name}#\${mailbox-display}]? '

# Automatically quote the text of the message that is responded to.
set quote

# When replying, do not merge From: and To: of the original message
# into To:.  Instead old From: -> new To:, old To: -> merge Cc:.
set recipients-in-cc

# When responding to a message, try to answer in the same character set
# (which is subject to `charsetalias' expansion, though).
#set reply-in-same-charset

# Honour Reply-To: headers when replying etc.
set reply-to-honour=ask-yes

# [OPTION] Outgoing messages are sent in UTF-8 if possible, otherwise LATIN1.
# Note: it is highly advisable to read the section "Character sets" of the
# manual in order to understand all the possibilities that exist to fine-tune
# charset usage (variables also of interest: *ttycharset*, *charset-8bit*,
# *sendcharsets-else-ttycharset*; and of course we inherit the $LC_CTYPE /
# $LC_ALL / $LANG environment variables and react upon them).
set sendcharsets=utf-8,iso-8859-1

# Display real sender names in header summaries instead of only addresses.
set showname

# Show recipients of messages sent by the user himself in header summaries.
set showto

## Commands

# Most commands are not portable to other Mail(1) / mailx(1) / mail(1)
# programs, which is why most commands are commented out.  To remain portable,
# place anything specific in its own file, and then
#   set mailx-extra-rc=~/.my-file"
# in $MAILRC (usually ~/.mailrc).
# The below use the \ command modifier to avoid `commandalias' checks

# Map ISO-8859-1 to LATIN1, and LATIN1 to CP1252.
# (These mappings are not applied to character sets specified by other
# variables, e.g., *sendcharsets*).
#\charsetalias iso-8859-1 latin1  latin1 cp1252

# Only include the selected header fields when printing messages
# (`headerpick' is not portable, so use the standard `retain')
retain date sender from to cc subject message-id mail-followup-to reply-to
#\headerpick type retain from_ date sender from to cc subject \
#   message-id mail-followup-to reply-to
# - when forwarding messages
#\headerpick forward retain subject date sender from to cc
# - and do not include these when saving message, etc.
#\if "$features" =@ ,+regex,
#  \headerpick save ignore '^Original-.*$' '^X-.*$'
#\end

## Some pipe-TYPE/SUBTYPE entries

# HTML as text, inline display via lynx(1).
#\if "$features" !@ ,+filter-html-tagsoup,
#   \set pipe-text/html='?* lynx -stdin -dump -force_html'
#\endif

# "External body", URL type supported only.
#\wysh set pipe-message/external-body='?* echo $MAILX_EXTERNAL_BODY_URL'

# PDF display, asynchronous display: via `mimeview' command only.
#\wysh set pipe-application/pdf='?=&@\
#   trap "rm -f \"${MAILX_FILENAME_TEMPORARY}\"" EXIT;\
#   trap "trap \"\" INT QUIT TERM; exit 1" INT QUIT TERM;\
#   mupdf "${MAILX_FILENAME_TEMPORARY}"'

## Gimmicks

# More key bindings for the Mailx-Line-Editor (when in interactive mode).
#\if terminal && "$features" =@ +key-bindings
#   \bind base $'\e',d mle-snarf-word-fwd
#   \bind base $'\e',$'\c?' mle-snarf-word-bwd
#   \bind base $'\e',f mle-go-word-fwd
#   \bind base $'\e',b mle-go-word-bwd
#   \bind base $'\cL' mle-clear-screen
#   \bind compose :kf1 ~v
#\endif

# Coloured prompt for the Mailx-Line-Editor (when in interactive mode).
#\if terminal && "$features" =@ +mle && "$features" =@ +colour
#   \colour 256 mle-position fg=202
#   \colour 256 mle-prompt fg=203
#   \colour 256 mle-error bg=124
#   \colour iso mle-position ft=bold
#   \colour iso mle-prompt fg=brown
#   \colour iso mle-error bg=red
#   \colour mono mle-position ft=reverse
#   \colour mono mle-prompt ft=bold
#   \colour mono mle-error ft=reverse
#\endif

# Install file-extension handlers to handle MBOXes in various formats.
#\filetype \
#   bz2 'bzip2 -dc' 'bzip2 -zc' \
#   gpg 'gpg -d' 'gpg -e' \
#   gz 'gzip -dc' 'gzip -c' \
#   xz 'xz -dc' 'xz -zc' \
#   zst 'zstd -dc' 'zstd -19 -zc' \
#   zst.pgp 'gpg -d | zstd -dc' 'zstd -19 -zc | gpg -e'

# If mail is send from cron scripts and iconv(3) is compiled it, it could be
# that sending fails because of invalid (according to locale) character input.
# This undesired event can be prevented as follows, the (possibly) resulting
# octet-stream message data can be read nonetheless via
# *mime-counter-evidence*=0b1111:
#\if ! terminal && "$LOGNAME" == root
#   \set mime-force-sendout
#\endif

# s-it-mode

# Fedora-specific defaults
set bsdcompat
set noemptystart
set prompt='& '