CHANGES FROM 1.7 to 1.8, 26 March 2013

Incompatible Changes
====================

* layout redo/undo has been removed.

Normal Changes
==============

* Add halfpage up/down bindings to copy mode.
* Session choosing fixed to work with unattached sessions.
* New window options window-status-last-{attr,bg,fg} to denote the last
  window which was active.
* Scrolling in copy-mode now scrolls the region without moving the mouse
  cursor.
* run-shell learnt '-t' to specify the pane to use when displaying output.
* Support for middle-click pasting.
* choose-tree learns '-u' to start uncollapsed.
* select-window learnt '-T; to toggle to the last window if it's already
  current.
* New session option 'assume-paste-time' for pasting text versus key-binding
  actions.
* choose-* commands now work outside of an attached client.
* Aliases are now shown for list-commands command.
* Status learns about formats.
* Free-form options can be set with set-option if prepended with an '@'
  sign.
* capture-pane learnt '-p' to send to stdout, and '-e' for capturing escape
  sequences, and '-a' to capture the alternate screen, and '-P' to dump
  pending output.
* Many new formats added (client_session, client_last_session, etc.)
* Control mode, which is a way for a client to send tmux commands.
  Currently more useful to users of iterm2.
* resize-pane learnt '-x' and '-y' for absolute pane sizing.
* Config file loading now reports errors from all files which are loaded via
  the 'source-file' command.
* 'copy-pipe' mode command to copy selection and pipe the selection to a
  command.
* Changes panes can now emit focus notifications for certain applications
  which use those.
* run-shell and if-shell now accept format placeholders.
* resize-pane learnt '-Z' for zooming a pane temporarily.
* new-session learnt '-A' to make it behave like attach-session.
* set-option learnt '-o' to prevent setting an option which is already set.
* capture-pane and show-options learns '-q' to silence errors.
* New command 'wait-for' which blocks a client until woken up again.
* Resizing panes will now reflow the text inside them.
* Lots and lots of bug fixes, fixing memory-leaks, etc.
* Various manpage improvements.

CHANGES FROM 1.6 to 1.7, 13 October 2012

* tmux configuration files now support line-continuation with a "\" at the
  end of a line.
* New option status-position to move the status line to the top or bottom of
  the screen.
* Enforce history-limit option when clearing the screen.
* Give each window a unique id, like panes but prefixed with @.
* Add pane id to each pane in layout description (while still accepting
  the old form).
* Provide defined ways to set the various default-path possibilities: ~
  for home directory, . for server start directory, - for session start
  directory and empty for the pane's working directory (the default). All
  can also be used as part of a relative path (eg -/foo). Also provide -c
  flags to neww and splitw to override default-path setting.
* Add -l flag to send-keys to send input literally (without translating
  key names).
* Allow a single option to be specified to show-options to show just that
  option.
* New command "move-pane" (like join-pane but allows the same window).
* join-pane and move-pane commands learn "-b" option to place the pane to
  the left or above.
* Support for bracketed-paste mode.
* Allow send-keys command to accept hex values.
* Add locking around "start-server" to avoid race-conditions.
* break-pane learns -P/-F arguments for display formatting.
* set-option learns "-q" to make it quiet, and not print out anything.
* copy mode learns "wrap-search" option.
* Add a simple form of output rate limiting by counting the number of
  certain C0 sequences (linefeeds, backspaces, carriage returns) and if it
  exceeds a threshold (current default 250/millisecond), start to redraw
  the pane every 100 milliseconds instead of making each change as it
  comes. Two configuration options - c0-change-trigger and
  c0-change-interval.
* find-window learns new flags:  "-C", "-N", "-T" to match against either or
  all of a window's content, name, or title.  Defaults to all three options
  if none specified.
* find-window automatically selects the appropriate pane for the found
  matches.
* show-environment can now accept one option to show that environment value.
* Exit mouse mode when end-of-screen reached when scrolling with the mouse
  wheel.
* select-layout learns -u and -U for layout history stacks.
* kill-window, detach-client, kill-session all  learn "-a" option for
  killing all but the current thing specified.
* move-window learns "-r" option to renumber window sequentially in a
  session.
* New session option "renumber-windows" to automatically renumber windows in
  a session when a window is closed.  (see "move-window -r").
* Only enter copy-mode on scroll up.
* choose-* and list-* commands all use "-F" for format specifiers.
* When spawning external commands, the value from the "default-shell" option
  is now used, rather than assuming /bin/sh.
* New choose-tree command to render window/sessions as a tree for selection.
* display-message learns new format options.
* For linked-windows across sessions, all flags for that window are now
  cleared across sessions.
* Lots and lots of bug fixes, fixing memory-leaks, etc.
* Various manpage improvements.

CHANGES FROM 1.5 TO 1.6, 23 January 2012

* Extend the mode-mouse option to add a third choice which means the mouse
  does not enter copy mode.
* Add a -r flag to switch-client to toggle the client read-only flag.
* Add pane-base-index option.
* Support \ for line continuation in the configuration file.
* Framework for more powerful formatting of command output and use it for
  list-{panes,windows,sessions}. This allows more descriptive replacements
  (such as #{session_name}) and conditionals.
* Mark dead panes with some text saying they are dead.
* Reject $SHELL if it is not a full path.
* Add -S option to refresh-client to redraw status line.
* Add an else clause for if-shell.
* Try to resolve relative paths for loadb and saveb (first, using client
  working directory, if any, then default-path or session working directory).
* Support for \e[3J to clear the history and send the corresponding
  terminfo code (E3) before locking.
* When in copy mode, make repeat count indicate buffer to replace, if used.
* Add screen*:XT to terminal-overrides for tmux-in-tmux.
* Status-line message attributes added.
* Move word-separators to be a session rather than window option.
* Change the way the working directory for new processes is discovered. If
  default-path isn't empty, it is used. Otherwise, if a new window is created
  from the command-line, the working directory of the client is used. If not,
  platform specific code is used to retrieve the current working directory
  of the process in the active pane. If that fails, the directory where the
  session was created is used, instead.
* Do not change the current pane if both mouse-select-{pane,window} are
  enabled.
* Add \033[s and \033[u to save and restore cursor position.
* Allow $HOME to be used as default-path.
* Add CNL and CPL escape sequences.
* Calculate last position correctly for UTF-8 wide characters.
* Add an option allow-rename to disable the window rename escape sequence.
* Attributes for each type of status-line alert (ie bell, content and
  activity) added. Therefore, remove the superfluous options
  window-status-alert-{attr,bg,fg}.
* Add a -R flag to send-keys to reset the terminal.
* Add strings to allow the aixterm bright colours to be used when
  configuring colours.
* Drop the ability to have a list of keys in the prefix in favour of two
  separate options, prefix and prefix2.
* Flag -2 added to send-prefix to send the secondary prefix key.
* Show pane size in top right of display panes mode.
* Some memory leaks plugged.
* More command-prompt editing improvements.
* Various manpage improvements.
* More Vi mode improvements.

CHANGES FROM 1.4 TO 1.5, 09 July 2011

* Support xterm mouse modes 1002 and 1003.
* Change from a per-session stack of buffers to one global stack. This renders
  copy-buffer useless and makes buffer-limit now a server option.
* Fix most-recently-used choice by avoiding reset the activity timer for
  unattached sessions every second.
* Add a -P option to new-window and split-window to print the new window or
  pane index in target form (useful to pass it into other commands).
* Handle a # at the end of a replacement string (such as status-left)
  correctly.
* Support for UTF-8 mouse input (\033[1005h) which was added in xterm 262.
  If the new mouse-utf8 option is on, UTF-8 mouse input is enabled for all
  UTF-8 terminals. The option defaults to on if LANG etc are set in the same
  manner as the utf8 option.
* Support for HP-UX.
* Accept colours of the hex form #ffffff and translate to the nearest from the
  xterm(1) 256-colour set.
* Clear the non-blocking IO flag (O_NONBLOCK) on the stdio file descriptors
  before closing them (fixes things like "tmux ls && cat").
* Use TMPDIR if set.
* Fix next and previous session functions to actually work.
* Support -x and -y for new-session to specify the initial size of the window
  if created detached with -d.
* Make bind-key accept characters with the top-bit-set and print them as octal.
* Set $TMUX without the session when background jobs are run.
* Simplify the way jobs work and drop the persist type, so all jobs are
  fire-and-forget.
* Accept tcgetattr/tcsetattr(3) failure, fixes problems with fatal() if the
  terminal disappears while locked.
* Add a -P option to detach to HUP the client's parent process (usually causing
  it to exit as well).
* Support passing through escape sequences to the underlying terminal by using
  DCS with a "tmux;" prefix.
* Prevent tiled producing a corrupt layout when only one column is needed.
* Give each pane created in a tmux server a unique id (starting from 0), put it
  in the TMUX_PANE environment variable and accept it as a target.
* Allow a start and end line to be specified for capture-pane which may be
  negative to capture part of the history.
* Add -a and -s options to lsp to list all panes in the server or session
  respectively. Likewise add -s to lsw.
* Change -t on display-message to be target-pane for the #[A-Z] replacements
  and add -c as target-client.
* The attach-session command now prefers the most recently used unattached
  session.
* Add -s option to detach-client to detach all clients attached to a session.
* Add -t to list-clients.
* Change window with mouse wheel over status line if mouse-select-window is on.
* When mode-mouse is on, automatically enter copy mode when the mouse is
  dragged or the mouse wheel is used. Also exit copy mode when the mouse wheel
  is scrolled off the bottom.
* Provide #h character pair for short hostname (no domain).
* Don't use strnvis(3) for the title as it breaks UTF-8.
* Use the tsl and fsl terminfo(5) capabilities to update terminal title and
  automatically fill them in on terminals with the XT capability (which means
  their title setting is xterm-compatible).
* Add a new option, mouse-resize-pane. When on, panes may be resized by
  dragging their borders.
* Fix crash by resetting last pane on {break,swap}-pane across windows.
* Add three new copy-mode commands - select-line, copy-line, copy-end-of-line.
* Support setting the xterm clipboard when copying from copy mode using the
  xterm escape sequence for the purpose (if xterm is configured to allow it).
* Support xterm(1) cursor colour change sequences through terminfo(5) Cc
  (set) and Cr (reset) extensions.
* Support DECSCUSR sequence to set the cursor style with two new terminfo(5)
  extensions, Cs and Csr.
* Make the command-prompt custom prompts recognize the status-left option
  character pairs.
* Add a respawn-pane command.
* Add a couple of extra xterm-style keys that gnome terminal provides.
* Allow the initial context on prompts to be set with the new -I option to
  command-prompt. Include the current window and session name in the prompt
  when renaming and add a new key binding ($) for rename session.
* Option bell-on-alert added to trigger the terminal bell when there is an
  alert.
* Change the list-keys format so that it shows the keys using actual tmux
  commands which should be able to be directly copied into the config file.
* Show full targets for lsp/lsw -a.
* Make confirm-before prompt customizable with -p option like command-prompt
  and add the character pairs #W and #P to the default kill-{pane,window}
  prompts.
* Avoid sending data to suspended/locked clients.
* Small memory leaks in error paths plugged.
* Vi mode improvements.

CHANGES FROM 1.3 TO 1.4, 27 December 2010

* Window bell reporting fixed.
* Show which pane is active in the list-panes output.
* Backoff reworked.
* Prevent the server from dying when switching into copy mode when already
  in a different mode.
* Reset running jobs when the status line is enabled or disabled.
* Simplify xterm modifier detection.
* Avoid crashing in copy mode if the screen size is too small for the
  indicator.
* Flags -n and -p added to switch-client.
* Use UTF-8 line drawing characters on UTF-8 terminals, thus fixing some
  terminals (eg putty) which disable the vt100 ACS mode switching sequences
  in UTF-8 mode. On terminals without ACS, use ASCII equivalents.
* New server option exit-unattached added.
* New session option destroy-unattached added.
* Fall back on normal session choice method if $TMUX exists but is invalid
  rather than rejecting.
* Mark repeating keys with "(repeat)" in the key list.
* When removing a pane, don't change the active pane unless the active pane
  is actually the one being removed.
* New command last-pane added.
* AIX fixes.
* Flag -a added to unbind-key.
* Add XAUTHORITY to update-environment.
* More info regarding window and pane flags is now shown in list-*.
* If VISUAL or EDITOR contains "vi" configure mode-keys and status-key to vi.
* New window option monitor-silence and session option visual-silence added.
* In the built-in layouts distribute the panes more evenly.
* Set the default value of main-pane-width to 80 instead of 81.
* Command-line flag -V added.
* Instead of keeping a per-client prompt history make it global.
* Fix rectangle copy to behave like emacs (the cursor is not part of the
  selection on the right edge but on the left it is).
* Flag -l added to switch-client.
* Retrieve environment variables from the global environment rather than
  getenv(3), thus allowing them to be updated during the configuration file.
* New window options other-pane-{height,width} added.
* More minor bugs fixed and manpage improvements.

CHANGES FROM 1.2 TO 1.3, 18 July 2010

* New input parser.
* Flags to move through panes -UDLR added to select-pane.
* Commands up-pane, and down-pane removed, since equivalent behaviour is now
  available through the target flag (-t:+ and -t:-).
* Jump-forward/backward in copy move (based on vi's F, and f commands).
* Make paste-buffer accept a pane as a target.
* Flag -a added to new-window to insert a window after an existing one, moving
  windows up if necessary.
* Merge more mode into copy mode.
* Run job commands explicitly in the global environment (which can be modified
  with setenv -g), rather than with the environment tmux started with.
* Use the machine's hostname as the default title, instead of an empty string.
* Prevent double free if the window option remain-on-exit is set. 
* Key string conversions rewritten.
* Mark zombie windows as dead in the choose-window list.
* Tiled layout added.
* Signal handling reworked.
* Reset SIGCHLD after fork to fix problems with some shells.
* Select-prompt command removed. Therefore, bound ' to command-prompt -p index
  "select-window -t:%%" by default.
* Catch SIGHUP and terminate if running as a client, thus avoiding clients from
  being left hanging around when, for instance, a SSH session is disconnected.
* Solaris 9 fixes (such as adding compat {get,set}env(3) code).
* Accept none instead of default for attributes.
* Window options window-status-alert-{alert,bg,fg} added.
* Flag -s added to the paste-buffer command to specify a custom separator.
* Allow dragging to make a selection in copy mode if the mode-mouse option is
  set.
* Support the mouse scroll wheel.
* Make pipe-pane accept special character sequences (eg #I).
* Fix problems with window sizing when starting tmux from .xinitrc.
* Give tmux sockets (but not the containing folder) group permissions.
* Extend the target flags (ie -t) to accept an offset (for example -t:+2), and
  make it wrap windows, and panes.
* New command choose-buffer added.
* New server option detach-on-destroy to set what happens to a client when the
  session it is attached to is destroyed. If on (default), the client is
  detached. Otherwise, the client is switched to the most recently active of
  the remaining sessions.
* The commands load-buffer, and save-buffer now accept a dash (-) as the file
  to read from stdin, or write to stdout.
* Custom layouts added.
* Additional code reduction, bug fixes, and manpage enhancements.

CHANGES FROM 1.1 TO 1.2, 10 March 2010

* Switch to libevent.
* Emulate the ri (reverse index) capability, ergo allowing tmux to at least
  start on Sun consoles (TERM=sun, or sun-color).
* Assign each entry a number, or lowercase letter in choose mode, and accept
  that as a shortcut key.
* Permit top-bit-set characters to be entered in the status line.
* Mark no-prefix keys with (no prefix), rather than [] in list-keys.
* New command show-messages (alias showmsgs), and new session option
  message-limit, to show a per-client log of status lines messages up to the
  number defined by message-limit.
* Do not interpret #() for display-message to avoid leaking commands.
* New window options window-status-format, and window-status-current-format to
  control the format of each window in the status line.
* Add a -p flag to display-message to print the output, instead of displaying
  it in the status line.
* Emulate il1, dl1, ich1 to run with vt100 feature set.
* New command capture-pane (alias capturep) to copy the entire pane contents
  to a paste buffer.
* Avoid duplicating code by adding a -w flag to set-option, and show-options to
  set, and show window options. The commands set-window-option, and
  show-window-options are now aliases.
* Panes can now be referred to as top, bottom, top-left, etc.
* Add server-wide options, which can be set with set-option -s, and shown with
  show-options -s.
* New server option quiet (like -q from the command line).
* New server option escape-time to set the timeout used to detect if escapes
  are alone, part of a function key, or meta sequence.
* New session options pane-active-border-bg, pane-active-border-fg,
  pane-border-bg, and pane-border-fg to set pane colours.
* Make split-window accept a pane target, instead of a window.
* New command join-pane (alias joinp) to split, and move an existing pane into
  the space (the opposite of break-pane), thus simplifying calls to
  split-window, followed by move-window.
* Permit S- prefix on keys for shift when the terminal/terminfo supports them.
* Window targets (-t flag) can now refer to the last window (!), next (+), and
  previous (-) window by number.
* Mode keys to jump to the bottom/top of history, end of the next word, scroll
  up/down, and reverse search in copy mode.
* New session option display-panes-active-colour to display the active pane in
  a different colour with the display-panes command.
* Read the socket path from $TMUX if it's present, and -L, and -S are not
  given.
* Vi-style mode keys B, W, and E to navigate between words in copy mode.
* Start in more mode when configuration file errors are detected.
* Rectangle copy support added.
* If attach-session was specified with the -r flag, make the client read-only.
* Per-window alternate-screen option.
* Make load-buffer work with FIFOs.
* New window option word-separators to set the characters considered as word
  separators in copy mode.
* Permit keys in copy mode to be prefixed by a repeat count, entered with [1-9]
  in vi mode, or M-[1-9] in emacs mode.
* utf8 improvements.
* As usual, additional code reduction, bug fixes, and manpage enhancements.

CHANGES FROM 1.0 TO 1.1, 05 November 2009

* New run-shell (alias run) command to run an external command without a
  window, capture it's stdout, and send it to output mode.
* Ability to define multiple prefix keys.
* Internal locking mechanism removed. Instead, detach each client and run the
  external command specified in the new session option lock-command (by default
  lock -np), thus allowing the system password to be used.
* set-password command, and -U command line flag removed per the above change.
* Add support for -c command line flag to execute a shell command.
* New lock-client (alias lockc), and lock-session (alias locks) commands to
  lock a particular client, or all clients attached to a session.
* Support C-n/C-p/C-v/M-v with emacs keys in choice mode.
* Use : for goto line rather than g in vi mode. 
* Try to guess which client to use when no target client was specified. Finds
  the current session, and if only one client is present, use it. Otherwise,
  return the most recently used client.
* Make C-Down/C-Up in copy mode scroll the screen down/up one line without
  moving the cursor.
* Scroll mode superseded by copy mode.
* New synchronize-panes window option to send all input to all other panes in
  the same window.
* New lock-server session option to lock, when off (on by default), each
  session when it has been idle for the lock-after-time setting. When on, the
  entire server locks when all sessions have been idle for their individual
  lock-after-time setting.
* Add support for grouped sessions which have independent name, options,
  current window, but where the linked windows are synchronized (ie creating,
  killing windows are mirrored between the sessions). A grouped session may be
  created by passing -t to new-session.
* New mouse-select-pane session option to select the current pane with the
  mouse.
* Queue, and run commands in the background for if-shell, status-left,
  status-right, and #() by starting each once every status-interval. Adds the
  capability to call some programs which would previously cause the server to
  hang (eg sleep/tmux). It also avoids running commands excessively (ie if used
  multiple times, it will be run only once).
* When a window is zombified and automatic-rename is on, append [dead] to the
  name.
* Split list-panes (alias lsp) off from list-windows.
* New pipe-pane (alias pipep) to redirect a pane output to an external command.
* Support for automatic-renames for Solaris.
* Permit attributes to be turned off in #[] by prefixing with no (eg nobright).
* Add H/M/L in vi mode, and M-R/M-r in emacs to move the cursor to the top,
  middle, and bottom of the screen.
* -a option added to kill-pane to kill all except current pane.
* The -d command line flag is now gone (can be replaced by terminal-overrides).
  Just use op/AX to detect default colours.
* input/tty/utf8 improvements.
* xterm-keys rewrite.
* Additional code reduction, and bug fixes.

CHANGES FROM 0.9 TO 1.0, 20 Sept 2009

* Option to alter the format of the window title set by tmux.
* Backoff for a while after multiple incorrect password attempts.
* Quick display of pane numbers (C-b q).
* Better choose-window, choose-session commands and a new choose-client command.
* Option to request multiple responses when using command-prompt.
* Improved environment handling.
* Combine wrapped lines when pasting.
* Option to override terminal settings (terminal-overrides).
* Use the full range of ACS characters for drawing pane separator lines.
* Customisable mode keys.
* Status line colour options, with embedded colours in status-left/right, and
  an option to centre the window list.
* Much improved layouts, including both horizontal and vertical splitting.
* Optional visual bell, activity and content indications.
* Set the utf8 and status-utf8 options when the server is started with -u.
* display-message command to show a message in the status line, by default some
  information about the current window.
* Improved current process detection on NetBSD.
* unlink-window -k is now the same as kill-window.
* attach-session now works from inside tmux.
* A system-wide configuration file, /etc/tmux.conf.
* A number of new commands in copy mode, including searching.
* Panes are now specified using the target (-t) notation.
* -t now accepts fnmatch(3) patterns and looks for prefixes.
* Translate \r into \n when pasting.
* Support for binding commands to keys without the prefix key
* Support for alternate screen (terminfo smcup/rmcup).
* Maintain data that goes off screen after reducing the window size, so it can
  be restored when the size is increased again.
* New if-shell command to test a shell command before running a tmux command.
* tmux now works as the shell.
* Man page reorganisation.
* Many minor additions, much code tidying and several bug fixes.

CHANGES FROM 0.8 TO 0.9, 01 July 2009

* Major changes to build infrastructure: cleanup of makefiles and addition
  of a configure script.
* monitor-content window option to monitor a window for a specific fnmatch(3)
  pattern. The find-window command also now accepts fnmatch(3) patterns.
* previous-layout and select-layout commands, and a main-horizontal layout.
* Recreate the server socket on SIGUSR1.
* clear-history command.
* Use ACS line drawing characters for pane separator lines.
* UTF-8 improvements, and code to detect UTF-8 support by looking at
  environment variables.
* The resize-pane-up and resize-pane-down commands are now merged together
  into a new resize-pane command with -U and -D flags.
* confirm-before command to request a yes/no answer before executing dangerous
  commands.
* Status line bug fixes, support for UTF-8 (status-utf8 option), and a key to
  paste from the paste buffer.
* Support for some additional escape sequences and terminal features, including
  better support for insert mode and tab stops.
* Improved window resizing behaviour, modelled after xterm.
* Some code reduction and a number of miscellaneous bug fixes.

================================================================================

On 01 June 2009, tmux was imported into the OpenBSD base system. From this date
onward changes are logged as part of the normal CVS commit message to either
OpenBSD or SourceForge CVS. This file will be updated to contain a summary of
major changes with each release, and to mention important configuration or
command syntax changes during development.

The list of older changes is below.

================================================================================

21 May 2009

* stat(2) files before trying to load them to avoid problems, for example
  with "source-file /dev/zero".

19 May 2009

* Try to guess if the window is UTF-8 by outputting a three-byte UTF-8 wide
  character and seeing how much the cursor moves. Currently tries to figure out
  if this works by some stupid checks on the terminal, these need to be
  rethought. Also might be better using a width 1 character rather than width 2.
* If LANG contains "UTF-8", assume the terminal supports UTF-8, on the grounds
  that anyone who configures it probably wants UTF-8. Not certain if this is
  a perfect idea but let's see if it causes any problems.
* New window option: monitor-content. Searches for a string in a window and if
  it matches, highlight the status line.

18 May 2009

* main-horizontal layout and main-pane-height option to match vertical.
* New window option main-pane-width to set the width of the large left pane with
  main-vertical (was left-vertical) layout. 
* Lots of layout cleanup. manual layout is now manual-vertical.

16 May 2009

* select-layout command and a few default key bindings (M-0, M-1, M-2, M-9) to
  select layouts.
* Recreate server socket on SIGUSR1, per SF feature request 2792533.

14 May 2009

* Keys in status line (p in vi mode, M-y in emacs) to paste the first line
  of the upper paste buffer. Suggested by Dan Colish.
* clear-history command to clear a pane's history.
* Don't force wrapping with \n when asked, let the cursor code figure it out.
  Should fix terminals which use this to detect line breaks.
* Major cleanup and restructuring of build infrastructure. Still separate files
  for GNU and BSD make, but they are now hugely simplified at the expense of
  adding a configure script which must be run before make. Now build and
  install with:

	$ ./configure && make && sudo make install

04 May 2009

* Use ACS line drawing characters for pane separator lines.

30 April 2009

* Support command sequences without a space before the semicolon, for example
  "neww; neww" now works as well as "neww ; neww". "neww;neww" is still an
  error.
* previous-layout command.
* Display the layout name in window lists.
* Merge resize-pane-up and resize-pane-down into resize-pane with -U and -D
  flags.

29 April 2009

* Get rid of compat/vis.* - only one function was used which is easily
  replaced,and less compat code == good.

27 April 2009

* Avoid using the prompt history when the server is locked, and prevent any
  input entered from being added to the client's prompt history.
* New command, confirm-before (alias confirm), which asks for confirmation
  before executing a command. Bound "&" and "x" by default to confirm-before
  "kill-window" and confirm-before "kill-pane", respectively.

23 April 2009

* Support NEL, yet another way of making newline. Fixes the output from some
  Gentoo packaging thing. Reported by someone on SF then logs that allowed a
  fix sent by tcunha.
* Use the xenl terminfo flag to detect early-wrap terminals like the FreeBSD
  console. Many thanks for a very informative email from Christian Weisgerber.

21 April 2009

* tmux 0.8 released.

17 April 2009

* Remove the right number of characters from the buffer when escape then
  a cursor key (or other key prefixed by \033) is pressed. Reported by
  Stuart Henderson.

03 April 2009

* rotate-window command. -U flag (default) for up, -D flag for down.

02 April 2009

* Change scroll/pane redraws to only redraw the single pane affected rather
  than the entire window.
* If redrawing the region would mean redrawing > half the pane, just schedule
  to redraw the entire window. Also add a flag to skip updating the window any
  further if it is scheduled to be redrawn. This has the effect of batching
  multiple redraws together.

01 April 2009

* Basic horizontal splitting and layout management. Still some redraw and other
  issues - particularly, don't mix with manual pane resizing, be careful when
  viewing from multiple clients and don't expect shell windows to redraw very
  well after the layout is changed; generally cycling the layout a few times
  will fix most problems. Getting this in for testing while I think about how
  to deal with manual mode.

  Split window as normal and cycle the layouts with C-b space. Some of the
  layouts will work better when swap-pane comes along.

31 March 2009

* AIX port, thanks to cmihai for access to a box. Only tested on 6.1 with xlc
  10.1 (make sure CC is set). Needs GNU make and probably ncurses (didn't try
  plain curses). Also won't build with DEBUG, so comment the FDEBUG=1 line in
  GNUmakefile.
* Draw a vertical line on the right when the window size is less than the
  terminal size. This is partly to shake out any horizontal limit bugs on the
  way to horizontal splitting/pane tiling. Currently a bit slow since it has to
  do a lot of redrawing but hopefully that will improve as I get some better
  ideas for how to do it.
* Fix remaining problems with copy and paste and UTF-8.

28 March 2009

* Better UTF-8 support, including combined characters. Unicode data is now
  stored as UTF-8 in a separate array, the code does a lookup into this every
  time it gets to a UTF-8 cell. Zero width characters are just appended onto
  the UTF-8 data for the previous cell. This also means that almost no bytes
  extra are wasted non-Unicode data (yay).

  Still some oddities, such as copy mode skips over wide characters in a
  strange way, and the code could do with some tidying.
* Key repeating is now a property of the key binding not of the command.
  Repeat is turned on when the key is bound with the -r flag to bind-key.
  next/previous-window no longer repeat by default as it turned out to annoy
  me.

27 March 2009

* Clear using ED when redrawing the screen. I foolishly assumed using spaces
  would be equivalent and terminals would pick up on this, but apparently not.
  This fixes copy and paste in xterm/rxvt.
* Sockets in /tmp are now created in a subdirectory named, tmux-UID, eg
  tmux-1000. The default socket is thus /tmp/tmux-UID/default. To start a
  separate server, the new -L command line option should be used: this creates
  a socket in the same directory with a different name ("-L main" will create
  socket called "main"). -S should only be used to place the socket outside
  /tmp. This makes sockets a little more secure and a bit more convenient to
  use multiple servers.

21 March 2009

* New session flag "set-remain-on-exit" to set remain-on-exit flag for new
  windows created in that session (like "remain-by-default" used to do). Not
  perfectly happy about this, but until I can think of a good way to introduce
  it generically (maybe a set of options in the session) this will do. Fixes
  SF request 2527847.

07 March 2009

* Support for 88 colour terminals.
* break-pane command to create a new window using an existing pane.

02 March 2009

* Make escape key timer work properly so escape+key can be used without
  lightning fast key presses.

13 February 2009

* Redo mode keys slightly more cleanly and apply them to command prompt
  editing. vi or emacs mode is controlled by the session option status-keys.

12 February 2009

* Looking up argv[0] is expensive, so just use p_comm for the window name which
  is good enough. Also increase name update time to 500 ms.

11 February 2009

* Only use ri when actually at the top of the screen; just move the cursor up
  otherwise.
* FreeBSD's console wraps lines at $COLUMNS - 1 rather than $COLUMNS (the
  cursor can never be beyond $COLUMNS - 1) and does not appear to support
  changing this behaviour, or any of the obvious possibilities (turning off
  right margin wrapping, insert mode). This is irritating, most notably because
  it impossible to write to the very bottom-right of the screen without
  scrolling. To work around this, if built on FreeBSD and run with a "cons"
  $TERM, the bottom-right cell on the screen is omitted.
* Emulate scroll regions (slowly) to support the few terminals which don't have
  it (some of which don't really have any excuse).

10 February 2009

* No longer redraw the status line every status-interval unless it has actually
  changed.

08 February 2009

* Don't treat empty arguments ("") differently when parsing configuration
  file/command prompt rather than command line.
* tmux 0.7 released.

03 February 2009

* New command, copy-buffer (alias copyb), to copy a session paste buffer to
  another session.

01 February 2009

* The character pair #(command) may now contain (escaped) right parenthesis.

30 January 2009

* . now bound to "command-prompt 'move-window %%'" by default, from joshe.

29 January 2009

* Window options to set status line fg, bg and attributes for a single
  window. Options are: window-status-fg, window-status-bg,
  window-status-attr. Set to "default" to use the session status colours.

  This allows quite neat things like:

	$ cat ~/bin/xssh
	#!/bin/sh

	if [ ! -z "$TMUX" ]; then
	case "$1" in
    	natalya)
	        tmux setw window-status-fg red >/dev/null
		;;
	natasha)
        	tmux setw window-status-fg yellow >/dev/null
		;;
	esac
	fi
	ssh "$@"
	[ ! -z "$TMUX" ] && tmux setw -u window-status-fg >/dev/null
	$ alias ssh="~/bin/xssh"

* Support #(command) in status-left, and status-right, which is displayed as
  the first line of command's output (e.g. set -g status-right
  "#(whoami)@#(hostname -s)"). Commands with )s aren't supported.

28 January 2009

* Support mouse in copy mode to move cursor. Can't do anything else at the
  moment until other mouse modes are handled.
* Better support for at least the most common variant of mouse input: parse it
  and adjust for different panes. Also support mouse in window/session choice
  mode.

27 January 2009

* Bring back the fancy window titles with session/window names: it is easy to
  work around problems with elinks (see FAQ).
* -u flag to scroll-mode and copy-mode to start scrolled one page
  up. scroll-mode -u is bound to prefix,page-up (ppage) by default.
* Allow status, mode and message attributes to be changed by three new options:
  status-attr, mode-attr, message-attr. A comma-separataed list is accepted
  containing: bright, dim, underscore, blink, reverse, hidden, italics, for
  example:

	set -g status-attr bright,blink

  From Josh Elsasser, thanks!

26 January 2009

* Be more clever about picking the right process to create the window name.
* Don't balls up the terminal on UTF-8 combined characters. Don't support them
  properly either - they are just discarded for the moment.

25 January 2009

* load-buffer command

23 January 2009

* Use reverse colours rather than swapping fg and bg for message, mode and
  status line. This makes these usable on black and white terminals.
* Better error messages when creating a session or window fails.
* Oops. Return non-zero on error. Reported by Will Maier.

21 January 2009

* Handle SIGTERM (and kill-server which uses it), a bit more neatly - tidy
  up properly and print a nicer message. Same effect though :-).
* new-window now supports -k to kill target window if it exists.
* Bring back split-window -p and -l options to specify the height a percentage
  or as a number of lines.
* Make window and session choice modes allow you to choose items in vi keys
  mode (doh!). As a side-effect, this makes enter copy selection (as well
  as C-w/M-w) when using emacs keys in copy mode. Reported by merdely.

20 January 2009

* Darwin support for automatic-rename from joshe; Darwin doesn't seem to have
  a sane method of getting argv[0] and searching for the precise insane way
  is too frustrating, so this just uses the executable name.
* Try to change the window title to match the command running it in. This is
  done by reading argv[0] from the process group leader of the group that owns
  the tty (tcgetpgrp()). This can't be done portably so some OS-dependent code
  is introduced (ugh); OpenBSD, FreeBSD and Linux are supported at the moment.

  A new window flag, automatic-rename, is available: if this is set to off, the
  window name is not changed. Specifying a name with the new-window,
  new-session or rename-window commands will automatically set this flag to off
  for the window in question. To disable it entirely set the option to off
  globally (setw -g automatic-rename off).

19 January 2009

* Fix various stupid issues when the status line is turned off. Grr.
* Use reverse attributes for clock and cursor, otherwise they do not
  appear on black and white terminals.
* An error in a command sequence now stops execution of that sequence.
  Internally, each command code now passes a return code back rather than
  talking to the calling client (if any) directly.
* attach-session now tries to start the server if it isn't already started - if
  no sessions are created in .tmux.conf this will cause an error.
* Clean up starting server by making initial client get a special socketpair.

18 January 2009

* Unbreak UTF-8.
* -a flag to next-window and previous-window to select the next or previous
  window with activity or bell. Bound to M-n and M-p.
* find-window command to search window names, titles and visible content (but
  not history) for a string. If only one is found, the window is selected
  otherwise a choice list is shown. This (as with the other choice commands)
  only works from a key. Bound to "f" by default.
* Cleaned up command printing code, also enclose arguments with spaces in "s.
* Added command sequences. These are entered by separating each argument by a ;
  argument (spaces on both sides), for example:

	lsk ; lsc

  To use a literal ; as the argument prefix it with \, for example:

	bind x lsk \; lsc

  Commands are executed from left to right. Also note that command sequences do
  not support repeat-time repetition unless all commands making up the sequence
  support it.
* suspend-client command to suspend a client. Don't try to background it
  though...
* Mark attached sessions in sessions lists. Suggested by Simon Kuhnle.

17 January 2009

* tmux 0.6 released.

15 January 2009

* Support #H for hostname and #S for session name in status-left/right.
* Two new commands, choose-window and choose-session which work only when bound
  to a key and allow the window or session to be selected from a list. These
  are now bound to "w" and "s" instead of the list commands.

14 January 2009

* Rework the prefix-time stuff. The option is now called repeat-time and
  defaults to 500 ms. It only applies to a small subset of commands, currently:
  up-pane, down-pane, next-window, previous-window, resize-pane-up,
  resize-pane-down. These are the commands for which it is obviously useful,
  having it for everything else was just bloody annoying.
* The alt-up and alt-down keys now resize a pane by five lines at a time.
* switch-pane is now select-pane and requires -p to select a pane. The
  "o" key binding is changed to down-pane.
* up-pane and down-pane commands, bound to arrow up and down by default.
* Multiple vertical window splitting. Minimum pane size is four lines, an
  (unhelpful) error will be shown if attempting to split a window with less
  that eight lines. If the window is resized, as many panes are shown as can
  fit without reducing them below four lines. There is (currently!) not a way
  to show a hidden pane without making the window larger.

  Note the -p and -l options to split-window are now gone, these may reappear
  once I think them through again.
* Server locking on inactivity (lock-after-time) is now disabled by default.

13 January 2009

* kill-pane command.

12 January 2009

* command-prompt now accepts a single argument, a template string. Any
  occurrences of %% in this string are replaced by whatever is entered at the
  prompt and the result is executed as a command. This allows things like (now
  bound by default):

  	 bind , command-prompt "rename-window %%"

  Or my favourite:

         bind x command-prompt "split-window 'man %%'"

* Option to set prefix time, allowing multiple commands to be entered without
  pressing the prefix key again, so long as they each typed within this time of
  each other.
* Yet more hacks for key handling. Think it is just about working now.
* Two commands, resize-pane-up and resize-pane-down to resize a pane.
* Make the window pane code handle panes of different sizes, and add a -l
  and -p arguments to split-window to specify the new window size in lines
  or as a percentage.

11 January 2009

* Vertical window splitting. Currently can only split a window into two panes.
  New split-window command splits (bound to ") and switch-pane command (bound to
  o) switches between panes.

  close-pane, swap-pane commands are to follow. Also to come are pane resizing,
  >2 panes, the ability to break a pane out to a full window and vice versa and
  possibly horizontal splitting.

  Panes are subelements of windows rather than being windows in their own
  right. I tried to make them windows (so the splitting was at the session or
  client level) but this rapidly became very complex and invasive. So in the
  interests of having something working, I just made it so each window can have
  two child processes instead of one (and it still took me 12 hours straight
  coding). Now the concept is proven and much of the support code is there,
  this may change in future if more flexibility is needed.
* save-buffer command, from Tiago Cunha.

10 January 2009

* New option, lock-after-time. If there is no activity in the period specified
  by this option (in seconds), tmux will lock the server. Default is 1800 (30
  minutes), set to 0 to disable.
* Server locking. Two new commands: set-password to set a password (a
  preencrypted password may be specified with -c); and lock-server to lock the
  server until the password is entered. Also an additional command line flag,
  -U, to unlock from the shell. The default password is blank (any password
  accepted). If specifying an encrypted password from encrypt(1) in .tmux.conf
  with -c, don't forget to enclose it in single-quotes (') to prevent shell
  variable expansion.
* If a window is created from the command line, tmux will now use the same
  current working directory for the new process. A new default-path option to
  sets the working directory for processes created from keys or interactively
  from the prompt.
* New mode to display a large clock. Entered with clock-mode command (bound to
  C-b t by default); two window options: clock-mode-colour and clock-mode-style
  (12 or 24). This will probably be used as the basis for window locking.
* New command, server-info, to show some server information and terminal
  details.

09 January 2009

* Stop using ncurses variables and instead build a table of the codes we want
  into an array for each terminal type. This makes the code a little more
  untidy in places but gets rid of the awful global variables and calling
  setterm all the time, and shoves all the ncurses-dependent mess into a single
  file, tty-term.c. It also allows overriding single terminal codes, this is
  used to fix rxvt on some platforms (where it is missing dch) and in future
  may allow user customisation a la vim.
* Update key handling code. Simplify, support ctrl properly and add a new
  window option (xterm-keys) to output xterm key codes including ctrl and,
  if available, alt and shift.

08 January 2009

* If built without DEBUG (the release versions), don't cause a fatal error if
  the grid functions notice an input error, just log and ignore the
  request. This might mean me getting shouted at less often when bugs kill
  long-running sessions, at least in release versions.
* Hopefully fix cursor out-of-bounds checking when writing to grid. When I
  wrote the code I must have forgotten that the cursor can be one cell off the
  right of the screen (yes, I know), so there were number of out-of-bounds/
  overflow problems.

07 January 2009

* New flag to set and setw, -u, to unset an option (allowing it to inherit from)
  the global options again.
* Added more info messages for options changes.
* A bit of tidying and reorganisation of options code.

06 January 2009

