This file lists incompatible changes and additional/new features made to

 mutt. Please read this file carefully when upgrading your installation.

 The keys used are:

   !: modified feature, -: deleted feature, +: new feature

   + $query_format (customize external query menu)

   ! inode sorting is always enabled

   + $time_inc suppresses progress updates less than $time_inc

     milliseconds apart.

 1.5.17 (2007-11-01):

   ! --enable-exact-address works again

 1.5.16 (2007-06-09):

   + next-unread-mailbox

   + $message_cache_clean (clean cache on sync)

   + $smtp_pass

   ! $header_cache_compress defaults to yes

 1.5.15 (2007-04-06):

   - $imap_home_namespace (useless clutter)

   + $check_mbox_size (use size change instead of atime for new mail)

   ! improved f=f support wraps lines at $wrap if $wrap is not 0

   + $wrap (>0 wraps at $wrap, <0 = $wrapmargin)

   + $assumed_charset, $attach_charset, $ignore_linear_white_space

   + $save_history, $history_file (save history across sessions)

   + $smtp_url (ESMTP relay support)

   + $crypt_use_pka (use GPGME PKA signature verification)

   ! format pipe support: format strings ending in | are filtered

   ! buffy size is configurable at runtime (no --enable-buffy-size

     configure option, new $check_mbox_size variable)

 1.5.13 (2006-08-14):

   + thread patterns.  Use ~(...) to match all threads that

     contain a message that matches ...

 1.5.12 (2006-07-14):

   - $imap_cachedir replaced with $message_cachedir

   + Header/body caching for POP ($message_cachedir)

   + Header caching for MH folders 

   ! $record now defaults to ~/sent

   ! $imap_idle now defaults to "yes" instead of "no"

   + Tab-completion for $my_* variable names and values

   + Expansion of mutt variables (except shell escape)

   + Self-defined variables with $my_* prefix 

   + Pattern group support 

   + $imap_cachedir

   + 'old' flag on IMAP folders

   + SASL-IR support for IMAP

   + IMAP IDLE support and $imap_idle

   + Pipeline-based IMAP communicaton

   + Full large file support

   + Attachment counting: attachments and unattachments commands,

     %Q and %X for $attach_format, %X for $index_format

   + Basque translation

   + QDBM backend for header caching

   + Irish translation

 1.5.11 (2005-09-15):

   ! $envelope_from_address has been added, $envelope_from has been renamed

     to $use_envelope_from

   + Progress bar via $net_inc

   + IMAP server-side simple string search

   + Simple string matches instead of full regex matches for '=' instead

     of '~' with pattern modifiers

   ! ~l matches all known lists, ~u only subscribed

   - SASL 1.5 support

   ! The manual is now build from DocBook/XML instead of Linuxdoc/SGML source

 1.5.10 (2005-08-11):

   + $imap_check_subscribed

   + Tab-completion for IMAP hosts

   ! $imap_force_ssl has been replaced without synonym by $ssl_force_tls

   - NSS support

   ! The default for $menu_move_off has been changed from "no" to "yes"

   ! An empty <limit> now cancels the current limit

   + Editing threads via <break-thread> and <link-threads>

   + -D command line option

   + the folder shortcut '^' refers to the currently opened folder

   + $imap_login

   + $braille_friendly

   + Header caching for Maildir folders

 Mutt 1.5.9 (2005-03-13):

   + $menu_move_off

   + <rename-mailbox> function for IMAP

 Mutt 1.5.8 (2005-02-12):

   + $menu_context

   ! IDNA decoding is now optional via $use_idn defaulting to "yes"

   + GPGME support via $crypt_use_gpgme

 Mutt 1.5.7 (2005-01-28):

   + SSL support via GNUTLS

   + Header caching for IMAP via $header_cache and $header_cache_pagesize

   + send2-hook

   + $ssl_client_cert

   + $hide_thread_subject

   + Generic spam detection: new configuration commands: 'spam' and

     'nospam', new options: $spam_separator, new expando: %H (for

     $index_format), new pattern: ~H pattern

   + $include_onlyfirst

   ! $pgp_mime_ask has been renamed without synonym to $pgp_mime_auto,

     new default is "ask-yes" rather than "no"

   + Inline PGP creation support via $pgp_replyinline, $pgp_autoinline

     and $pgp_mime_ask

   ! the 'bind' command can now be used on multiple menus at once

   + $config_charset

   + ~$ pattern

 1.5.6 (2004-02-01):

   ! the 'list' and 'subscribe' commands now take regular expression

     rather than string lists

   ! the $alternates option is replaced by the 'alternates' command

     taking lists of regular expressions

   ! mailing lists can be recognized via domain matching when

     starting with '@'

   + STLS (STARTTLS) support for POP3

 1.5.5 (2003-11-05):

   + Bulgarian translation

   - Kendra mailbox support

   + <tag-prefix-cond> and <cond-end>

   + ':' as expando modifier (e.g. '%:A')

   + $crypt_autopgp and $crypt_autosmime

   + $pgp_check_exit

 1.5.4 (2003-03-19):

   + IDNA support

   + $bounce

   ! $crypt_replyencrypt and $pgp_replyencrypt now default

     to "yes" instead of "no"

   + $pgp_auto_traditional

   + %A for $index_format

 1.5.3 (2002-12-17):

   + <next-new-then-unread> and <previous-new-then-unread>

   ! $mark_old: it only controls whether new messages

     are marked as old when leaving the mailbox

   + <what-key>

 1.5.2 (2002-12-06):

   + -A command line option

   + SASL2 support

   + <buffy-list>

   + $forward_edit

   + $content_type

   + unmailboxes command

   + unalternative_order command

   + reply-hook

 1.5.1 (2002-01-24):

   + $smime_default_key

   + $narrow_tree

   + -Q command line option

   + $crypt_timestamp

   + ~V pattern

   + S/MIME support

   + mime_lookup command