CHANGES

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 only important configuration or
command syntax changes in CVS.

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

* Don't crash when backspacing if cursor is off the right of the screen,
  reported by David Chisnall.
* Complete words at any point inside command in prompt, also use option name
  as well as command names.
* Per-client prompt history of up to 100 items.
* Use a splay tree for key bindings instead of an array. As a side-effect this
  sorts them when listed.

22 December 2008

* Use the right keys for home and end.

20 December 2008

* Add vim mode for tmux configuration file to examples/, from Tiago Cunha.

15 December 2008

* New command, source-file (alias source), to load a configuration
  file. Written by Tiago Cunha, many thanks.

13 December 2008

* Work around lack of dch. On Linux, the rxvt termcap doesn't have it (it is
  lying, but we can't really start disbelieving termcaps...). This is a bit
  horrible - I can see no way to do it without pretty much redrawing the whole
  line, but it works...

10 December 2008

* glibc's getopt(3) is useless: it is not POSIX compliant without jumping
  through non-portable hoops, and the method of resetting it is unclear (the
  man page on my system says set optind to 1, but other sources say 0). So,
  import OpenBSD's getopt_long.c into compat/ for use on Linux and use the
  clearly documented optreset = optind = 1 method. This fixes some strange
  issues with command parsing (getting the syntax wrong would prevent any
  further commands being parsed).

06 December 2008

* Bring set/setw/show/showw into line with other commands. This means that by
  default they now affect the current window (if any); the new -g flag must be
  passed to set the global options. This changes the behaviour of set/show and
  WILL BREAK CURRENT CONFIGURATIONS.

  In summary, whether in the configuration file, the command prompt, or a key
  binding, use -g to set a global option, use -t to specify a particular window
  or session, or omit both to try and use the current window or session.

  This makes set/show a bit of a pain but is the correct behaviour for
  setw/showw and is the same as every other command, so we can put up with a
  bit of pain for consistency.
* Redo window options. They now work in the same way to session options with a
  global options set. showw/setw commands now have similar syntax to show/set
  (including the ability to use abbreviations).

  PLEASE NOTE this includes the following configuration-breaking changes:

  - remain-by-default is now GONE, use "setw -g remain-on-exit" to apply the
    global window option instead;
  - mode-keys is now a window option rather than session - use "setw [-g]
    mode-keys" instead of set.

  There are also some additions:

  - message-fg and message-bg session options to control status line message
    colours;
  - mode-fg and mode-bg window options to set colours in window modes such as
    copy mode.

  The options code still a mess and now there is twice as much of it :-(.

02 December 2008

* Add support for including the window title in status-left or status-right
  strings by including the character pair "#T". This may be prefixed with
  a number to specify a maximum length, for example "#24T" to use at most
  24 characters of the title.
* Introduce two new options, status-left-length and status-right-length,
  control the maximum length of left and right components of the status bar.
* elinks (and possibly others) bypass the terminal and talk directly to X to
  restore the window title when exiting. tmux can't know about this particular
  bit of stupidity so the title ends up strange - the prefix isn't terribly
  important and elinks is quite useful so just get rid of it.

27 November 2008

* Tweaks to support Dragonfly.

17 November 2008

* tmux 0.5 released.

16 November 2008

* New window option: "utf8"; this must be on (it is off by default) for UTF-8
  to be parsed. The global/session option "utf8-default" controls the setting
  for new windows.

  This means that by default tmux does not handle UTF-8. To use UTF-8 by
  default it is necessary to a) "set utf8-default on" in .tmux.conf b) start
  tmux with -u on any terminal which support UTF-8.

  It seems a bit unnecessary for this to be a per-window option but that is
  the easiest way to do it, and it can't do any harm...
* Enable default colours if op contains \033[39;49m, based on a report from
  fulvio ciriaco.

12 November 2008

* Keep stack of last windows rather than just most recent; based on a diff from
  joshe.

04 November 2008

* Don't try to redraw status line when showing a prompt or message; if it does,
  the status timer is never reset so it redraws on every loop. Spotted by
  joshe.

09 October 2008

* Translate 256 colours into 16 if 256 is not available, same as screen does.
* Better support for OSC command (only to set window title now), and also
  support using APC for the same purpose (some Linux default shell profiles do
  this).

25 September 2008

* Large internal rewrite to better support 256 colours and UTF-8. Screen data
  is now stored as single two-way array of structures rather than as multiple
  separate arrays. Also simplified a lot of code.

  Only external changes are three new flags, -2, -d and -u, which force tmux to
  assume the terminal supports 256 colours, default colours (useful for
  xterm-256color which lacks the AX flag), or UTF-8 respectively.

10 September 2008

* Split off colour conversion code from screen code.

09 September 2008

* Initial UTF-8 support. A bit ugly and with a limit of 4096 UTF-8
  characters per window.

08 September 2008

* 256 colour support. tmux attempts to autodetect the terminal by looking
  both at what ncurses reports (usually wrong for xterm) and checking if
  the TERM contains "256col". For xterm TERM=xterm-256color is needed (as
  well as a build that support 256 colours); this seems to work for rxvt
  as well. On non-256 colour terminals, high colours are translated to white
  foreground and black background.

28 August 2008

* Support OS X/Darwin thanks to bsd-poll.c from OpenSSH. Also convert
  from clock_gettime(2) to gettimeofday(2) as OS X doesn't support the
  former; microsecond accuracy will have to be sufficient ;-).

07 August 2008

* Lose some unused/useless wrapper functions.

25 July 2008

* Shell variables may now be defined and used in configuration file. Define
  variables with:

	VAR=1

  And use with:

        renamew ${VAR}
	renamew "x${VAR}x"

 Also some other fixes to make, for example, "abc""abc" work similarly to
 the shell.

24 July 2008

* Finally lose inconsistently-used SCREEN_DEF* defines.
* If cursor mode is on, switch the arrow keys from \033[A to \033OA.
* Support the numeric keypad in both application and numbers mode. This is
  different from screen which always keeps it in application mode.

19 July 2008

* Unbreak "set status" - tmux thought it was ambiguous, reported by rivo nurges.

02 July 2008

* Split vi and emacs mode keys into two tables and add an option (mode-keys)
  to select between them. Default is emacs, use,

     tmux set mode-keys vi

  to change to vi.

  vi mode uses space to start selection, enter to copy selection and escape
  to clear selection.

01 July 2008

* Protocol versioning. Clients which identify as a different version from the
  server will be rejected.
* tmux 0.4 released.

29 June 2008

* Zombie windows. These are not closed when the child process dies. May be
  set for a window with the new "remain-on-exit" option; the default setting
  of this flag for new windows may be set with the "remain-by-default" session
  option.

  A window may be restarted with the respawn-window command:

  	respawn-window [-k] [command]

  If -k is given, any existing process running in the window is killed;
  if command is omitted, the same command as when the window was first
  created is used.

27 June 2008

* Handle nonexistent session or client to -t properly.

25 June 2008

* select-prompt command to allow a window to be selected at a prompt. Only
  windows in the current session may be selected. Bound to ' by default.
  Suggested by merdely.
* move-window command. Requested by merdely.
* Support binding alt keys (prefixed with M-). Change default to use
  C- for ctrl keys (^ is still accepted as an alternative).
* Slim down default key bindings: support lowercase only.
* Handle escaped keys properly (parse eg \033b into a single key code) and
  use this to change copy mode next/previous work to M-f and M-b to match
  emacs.

24 June 2008

* Next word (C-n/w) and previous word (C-b/b) in copy mode.

23 June 2008

* list-commands command (alias lscm).
* Split information about options into a table and use it to parse options
  on input (allowing abbreviations) and to print them with show-options
  (meaning that bell-action gets a proper string). This turned out a bit ugly
  though :-/.

22 June 2008

* Do not translate black and white into default if the terminal supports
  default colours. This was nice to force programs which didn't use default
  colours to be properly transparent in rxvt/aterm windows with a background
  image, but it causes trouble if someone redefines the default foreground and
  background (to have black on white or something).

21 June 2008

* Naive tab completion in the command prompt. This only completes command
  names if a) they are at the start of the text b) the cursor is at
  the end of the text c) the text contains no spaces.
* Only attempt to set the title where TERM looks like an xterm (contains
  "xterm", "rxvt" or is "screen"). I hate this but I don't see a better way:
  setting the title actually kills some other terminals pretty much dead.
* Strip padding out of terminfo(5) strings. Currently the padding is just
  ignored, this may need to be altered if there are any software terminals
  out there that actually need it.

20 June 2008

* buffer-limit option to set maximum size of buffer stack. Default is 9.
* Initial buffer improvements. Each session has a stack of buffers and each
  buffer command takes a -b option to manipulate items on the stack. If -b
  is omitted, the top entry is used. The following commands are currently
  available:

	set-buffer [-b index] [-t target-session] string
	paste-buffer [-d] [-b index] [-t target-window]
	delete-buffer [-b index] [-t target-session]
	show-buffers [-t target-session]
	show-buffer [-b index] [-t target-session]

  -d to paste-buffer deletes the buffer after pasting it.
* New option, display-time, sets the time status line messages stay on screen
  (unless a key is pressed). Set in milliseconds, default is 750 (0.75 seconds).
  The timer is only checked every 100 ms or so.

19 June 2008

* Use "status" consistently for status line option, and prefix for "prefix" key
  option.
* Allow commands to be entered at a prompt. This is triggered with the
  command-prompt command, bound to : by default.
* Show status messages properly, without blocking the server.

18 June 2008

* New option, set-titles. On by default, this attempts to set the window title
  using the \e]2;...\007 xterm code.

  Note that elinks requires the STY environment variable (used by screen) to be
  set before it will set the window title. So, if you want window titles set by
  elinks, set STY before running it (any value will do). I can't do this for all
  windows since setting it to an invalid value breaks screen.
* Show arrows at either end of status line when scrolled if more windows
  exist. Highlight the arrow if a hidden window has activity or bell.
* Scroll the status line to show the current window if necessary. Also handle
  windows smaller than needed better (show a blank status line instead of
  hanging or crashing).

17 June 2008

* tmux 0.3 released.

16 June 2008

* Add some information messages when window options are changed, suggested by
  Mike Erdely. Also add a -q command-line option to suppress them.
* show-window-options (showw) command.

15 June 2008

* show-options (show) command to show one or all options.

14 June 2008

* New window options: force-width and force-height. This will force a window
  to an arbitrary width and height (0 for the default unlimited). This is
  neat for emacs which doesn't have a sensible way to force hard wrapping at 80
  columns. Also, don't try to be clever and use clr_eol when redrawing the
  whole screen, it causes trouble since the redraw functions are used to draw
  the blank areas too.
* Clear the blank area below windows properly when they are smaller than client,
  also add an indicator line to show the vertical limit.
* Don't die on empty strings in config file, reported by Will Maier.

08 June 2008

* Set socket mode +x if any sessions are attached and -x if not.

07 June 2008

* Make status-interval actually changeable.

06 June 2008

* New window option: aggressive-resize. Normally, windows are resized to the
  size of the smallest attached session to which they are linked. This means a
  window only changes size when sessions are detached or attached, or they are
  linked or unlinked from a session. This flag changes a window to be the size
  of the smallest attached session for which it is the current window - it is
  resized every time a session changes to it or away from it. This is nice for
  things that handle SIGWINCH well (like irssi) and bad for things like shells.
* The server now exits when no sessions remain.
* Fix bug with inserting characters with TERM=xterm-color.

05 June 2008

* Completely reorganise command parsing. Much more common code in cmd-generic.c
  and a new way of specifying windows, clients or sessions. Now, most commands
  take a -t argument, which specifies a client, a session, or a window target.
  Clients and sessions are given alone (sessions are fnmatch(3)d and
  clients currently not), windows are give by (client|session):index. For
  example, if a user is in session "1" window 0 on /dev/ttypi, these should all
  be equivalent:

	tmux renamew newname			(current session and window)
	tmux renamew -t: newname		(current session and window)
	tmux renamew -t:0 newname		(current session, window 0)
	tmux renamew -t0 newname		(current session, window 0)
	tmux renamew -t1:0 newname		(session 1, window 0)
	tmux renamew -t1: newname		(session 1's current window)
	tmux renamew -t/dev/ttypi newname	(client /dev/ttypi's current
						 session and window)
	tmux renamew -t/dev/ttypi: newname	(client /dev/ttypi's current
						 session and window)
	tmux renamew -t/dev/ttypi:0 newname	(client /dev/ttypi's current
						 session, window 0)

  This does have some downsides, for example, having to use -t on selectw,

	tmux selectw -t7

  is annoying. But then using non-flagged arguments would mean renaming the
  current window would need to be something like:

	tmux renamew : newname

  It might be better not to try and be so consistent; comments to the usual
  address ;-).
* Infrastructure for printing arguments in list-keys output. Easy ones only for
  now.

04 June 2008

* Add some vi(1) key bindings in copy mode, and support binding ^[, ^\, ^]
  ^^ and ^_. Both from/prompted by Will Maier.
* setw monitor-activity and set status without arguments now toggle the current
  value; suggested by merdely.
* New command set-window-option (alias setw) to set the single current window
  option: monitor-activity to determine whether window activity is shown in
  the status bar for that window (default off).
* Change so active/bell windows are inverted in status line.
* Activity monitoring - window with activity are marked in status line. No
  way to disable this/filter windows yet.
* Brought select-window command into line with everything else; it now uses
  -i for the window index.
* Strings to display on the left and right of the status bar may now be set
  with the status-left and status-right options. These are passed through
  strftime(3) before being displayed. The status bar is automatically updated
  at an interval set by the status-interval option. The default is to display
  nothing on the left and the date and time on the left; the default update
  interval is 15 seconds.

03 June 2008

* Per session options. Setting options without specifying a session sets the
  global options as normal (global options are inherited by all sessions);
  passing -c or -s will set the option only for that session.
* Because a client has a session attached, any command needing a session can
  take a client and use its session. So, anything that used to accept -s now
  accepts -c as well.
* -s to specify session name now supports fnmatch(3) wildcards; if multiple
  sessions are found, or if no -s is specified, the most newly created is used.
* If no command is specified, assume new-session. As a byproduct, clean up
  command default values into separate init functions.
* kill-server command.

02 June 2008

* New command, start-server (alias "start"), to start the tmux server and do
  nothing else. This is good if you have a configuration file which creates
  windows or sessions (like me): in that case, starting the server the first
  time tmux new is run is bad since it creates a new session and window (as
  it is supposed to - starting the server is a side-effect).

  Instead, I have a little script which does the equivalent of:

  	tmux has -s0 2>/dev/null || tmux start
  	tmux attach -d -s0

  And I use it to start the server if necessary and attach to my primary
  session.
* Basic configuration file in ~/.tmux.conf or specified with -f. This is file
  contains a set of tmux commands that are run the first time the server is
  started. The configuration commands are executed before any others, so
  if you have a configuration file that contains:

	new -d
	neww -s0

  And you do the following without an existing server running:

	tmux new

  You will end up with two sessions, session 0 with two windows (created by
  the configuration file) and your client attached to session 1 with one
  window (created by the command-line command). I'm not completely happy with
  this, it seems a little non-obvious, but I haven't yet decided what to do
  about it.

  There is no environment variable handling or other special stuff yet.

  In the future, it might be nice to be able to have per-session configuration
  settings, probably by having conditionals in the file (so you could, for
  example, have commands to define a particular window layout that would only
  be invoked if you called tmux new -smysession and mysession did not already
  exist).
* BIG CHANGE: -s and -c to specify session name and client name are now passed
  after the command rather than before it. So, for example:

	tmux -s0 neww

  Becomes:

	tmux neww -s0

  This is to allow them to be used in the (forthcoming) configuration file
  THIS WILL BREAK ANY CURRENT SCRIPTS OR ALIASES USING -s OR -c.

01 June 2008

* Bug fix: don't die if -k passed to link-window and the destination doesn't
  exist.
* New command, send-keys, will send a set of keys to a window.

31 May 2008

* Fix so tmux doesn't hang if the initial window fails for some reason. This
  was highlighted by problems on Darwin, thanks to Elias Pipping for the report
  and access to a test account. (tmux still won't work on Darwin since its
  poll(2) is broken.)

02 January 2008

* Don't attempt to reset the tty on exit if it has been closed externally.

06 December 2007

* Restore checks for required termcap entries and add a few more obvious
  emulations.
* Another major reorganisation, this time of screen handling. A new set of
  functions, screen_write_*, are now used to write to a screen and a tty
  simultaneously. These are used by the input parser to update the base
  window screen and also by the different modes which now interpose their own
  screen.

30 November 2007

* Support \ek...\e\ to set window name.

27 November 2007

* Enable/disable mouse when asked, if terminal claims to support it. Mouse
  sequences are just passed through unaltered for the moment.
* Big internal reorganisation. Rather than leaving control of the tty solely in
  the client and piping all data through a socket to it, change so that the
  server opens the tty again and reads and writes to it directly. This avoids
  a lot of buffering and copying. Also reorganise the redrawing stuff so that
  everything goes through screen_draw_* - this makes the code simpler, but
  still needs broken up more, and all the ways of writing to screens should be
  more consistent.

26 November 2007

* Rather than shifting up one line at a time once the history is full,
  shift by 10% of the history each time. This is faster.
* Add ^A and ^E to copy mode to move to start-of-line/end-of-line.

24 November 2007

* Support for alt charset mode (VT100 graphics characters).

23 November 2007

* Mostly complete copy & paste. Copy mode entered with C-b [ (copy-mode
  command). In copy mode, arrow keys/page up/page down/hjkl/C-u/C-f navigate,
  space or C-space starts selection, and enter or C-w copies and (important!)
  exits copy mode. C-b ] (paste-buffer) pastes into current window. No
  extra utility keys (bol/eol/clear selection/etc), only one single buffer,
  and no buffer manipulation commands (clear/view/etc) yet. The code is also
  fugly :-(.
* history-limit option to set maximum history. Does not apply retroactively to
  existing windows! Lines take up a variable amount of space, but a reasonable
  guess for an 80-column terminal is 250 KB per 1000 lines (of history used,
  an empty history takes no space).

21 November 2007

* Create every line as zero length and only expand it as data is written,
  rather than creating at full size immediately.
* Make command output (eg list-keys) go to a scrollable window similar to
  scroll mode.
* Redo screen redrawing so it is a) readable b) split into utility functions
  that can be used outside screen.c. Use these to make scroll mode only
  redraw what it has to which gets rid of irritating flickering status box and
  makes it much faster.
* Full line width memory and horizontal scrolling in history.
* Initial support for scroll history. = to enter scrolling mode, and then
  vi keys or up/down/pgup/pgdown to navigate. Q to exit. No horizontal history
  yet (need per-line sizes) and a few kinks to be worked out (resizing while in
  history mode will probably cause trouble).

20 November 2007

* Fix format string error with "must specify a client" message. Also
  sprinkle some printflike tags.
* tmux 0.1 released.

17 November 2007

* (nicm) Add -k option to link-window to kill target window if it exists.

16 November 2007

* (nicm) Split in-client display into two columns. This is a hack but not a lot
  more so than that bit is already and it helps with lots of keys.
* (nicm) switch-client command to switch client between different sessions. This
  is pretty cool:

	$ tmux bind q switch 0
	$ tmux bind w switch 1

  Then you can switch between sessions 0 and 1 with a key :-).
* (nicm) Accept "-c client-tty" on command line to allow client manipulation
  commands, and change detach-/refresh-session to detach-/refresh-client (this
  loses the -a behaviour, but at some point -session versions may return, and
  -c will allow fnmatch(3)).
* (nicm) List available commands on ambiguous command.

12 November 2007

* (nicm) If the terminal supports default colours (AX present), force black
  background and white foreground to default. This is useful on transparent
  *terms for programs which don't do it themselves (like most(1)).
* (nicm) Fill in the rest of the man page.
* (nicm) kill-session command.

09 November 2007

* (nicm) C-space is now "^ " not "^@".
* (nicm) Support tab (\011).
* (nicm) Initial man page outline.
* (nicm) -V to show version.
* (nicm) rename-session command.

08 November 2007

* (nicm) Check for required terminal capabilities on start.

31 October 2007

* (nicm) Linux port.

30 October 2007

* (nicm) swap-window command. Same as link-window but swaps windows.

26 October 2007

* (nicm) Saving scroll region on \e7 causes problems with ncmpc so I guess
  it is not required.
* (nicm) unlink-window command.
* (nicm) link-window command to link an existing window into another session
  (or another index in the same session). Syntax:

	tmux -s dstname link-window [-i dstidx] srcname srcidx

* (nicm) Redo window data structures. The global array remains, but each per-
  session list is now a RB tree of winlink structures. This disassociates the
  window index from the array size (allowing arbitrary indexes) which still
  allowing windows to have multiple indexes.

25 October 2007

* (nicm) has-session command: checks if session exists.

24 October 2007

* (nicm) Support for \e6n to request cursor position. resize(1) now works.
* (nicm) Support for \e7, \e8 save/restore cursor and attribute sequences.
  Currently don't save mode (probably should). Also change some cases where
  out-of-bound values are ignored to limit them to within range (there are
  others than need to be checked too).

23 October 2007

* (nicm) Lift limit on session name passed with -s.
* (nicm) Show size in session/window lists.
* (nicm) Pass tty up to server when client identifies and add a list-clients
  command to list connected clients.

20 October 2007

* (nicm) Add default-command option and change default to be $SHELL rather than
  $SHELL -l. Also try to read shell from passwd db if $SHELL isn't present.

19 October 2007

* (nicm) -n on new-session is now -s, and -n is now the initial window name.
  This was documented but not implemented :-/.
* (nicm) kill-window command, bound to & by default (because it should be hard
  to hit accidently).
* (nicm) bell-style option with three choices: "none" completely ignore bell;
  "any" pass through a bell in any window to current; "current" ignore bells
  except in current window. This applies only to the bell terminal signal,
  the status bar always reflects any bells.
* (nicm) Refresh session command.

12 October 2007

* (nicm) Add a warning if $TMUX exists on new/attach.
* (nicm) send-prefix command. Bound to C-b by default.
* (nicm) set status, status-fg, status-bg commands. fg and bg are as a number
  from 0 to 8 or a string ("red", "blue", etc). status may be 1/0, on/off,
  yes/no.
* (nicm) Make status line mark window in yellow on bell.

04 October 2007

* (nicm) -d option to attach to detach all other clients on the same session.
* (nicm) Partial resizing support. Still buggy. A C-b S and back sometimes fixes
  it when it goes wonky.
* (mxey) Added my tmux start script as an example (examples/start-tmux.sh).
* (mxey) New sessions can now be given a command for their first window.
* (mxey) Fixed usage statement for new-window.
* (nicm) attach-session (can't believe I forgot it until now!) and list-windows
  commands.
* (nicm) rename-window and select-window commands.
* (nicm) set-option command (alias set): "tmux set-option prefix ^A".
* (nicm) Key binding and unbinding is back.

03 October 2007

* (nicm) {new,next,last,previous}-window.
* (nicm) Rewrite command handling so commands are much more generic and the
  same commands are used for command line and keys (although most will probably
  need to check how they are called). Currently incomplete (only new/detach/ls
  implemented). Change: -s is now passed before command again!
* (nicm) String number arguments. So you can do: tmux bind ^Q create "blah".
* (nicm) Key binding. tmux bind key command [argument] and tmux unbind key.
  Key names are in a table in key-string.c, plus A is A, ^A is ctrl-A.
  Possible commands are in cmd.c (look at cmd_bind_table).
* (nicm) Move command parsing into the client. Also rename some messages and
  tidy up a few bits. Lots more tidying up needed :-/.

02 October 2007

* (nicm) Redraw client status lines on rename.
* (nicm) Error on ambiguous command.

01 October 2007

* (nicm) Restore window title handling.
* (nicm) Simple uncustomisable status line with window list.

30 September 2007

* (nicm) Window info command for debugging, C-b I.

29 September 2007

* (nicm) Deleting/inserting lines should follow scrolling region. Fix.
* (nicm) Allow creation of detached sessions: "tmux new-session -d".
* (nicm) Permit error messages to be passed back for transient clients like
  rename. Also make rename -i work.
* (nicm) Pass through bell in any window to current.

28 September 2007

* (nicm) Major rewrite of input parser:
	- Lose the old weirdness in favour of a state machine.
	- Merge in parsing from screen.c.
	- Split key parsing off into a separate file.
  This is step one towards hopefully allowing a status line. It requires
  that we output data as if the terminal had one line less than it really does -
  a serious problem when it comes to things like scrolling. This change
  consolidates all the range checking and limiting together which should make
  it easier.
* (mxey) Added window renaming, like "tmux rename [-s session] [-i index] name"

27 September 2007

* Split "tmux list" into "tmux list-sessions" (ls) and "list-windows" (lsw).
* New command session selection:
	- if name is specified, look for it and use it if it exists, otherwise
	  error
	- if no name specified, try the current session from $TMUX
	- if $TMUX doesn't exist, and there is only one session, use it,
	  otherwise error

26 September 2007

* Add command aliases, so "ls" is an alias for "list".
* Rename some commands and alter syntax to take options after a la CVS. Also
  change some flags. So:

	tmux -s/socket -nabc new

  Becomes:

	tmux -S/socket new -sabc

* Major tidy and split of client/server code.

22 September 2007

* Window list command (C-b W). Started by Maximilian Gass, finished by me.

20 September 2007

* Specify meta via environment variable (META).
* Record last window and ^L key to switch to it. Largely from Maximilian Gass.
* Reset ignored signals in child after forkpty, makes ^C work.
* Wrap on next/previous. From Maximilian Gass.

19 September 2007

* Don't renumber windows on close.

28 August 2007

* Scrolling region (\e[r) support.

27 August 2007

* Change screen.c to work more logically and hopefully fix heap corruption.

09 July 2007

* Initial import to CVS. Basic functions are working, albeit with a couple of
  showstopper memory bugs and many missing features. Detaching, reattaching,
  creating new sessions, listing sessions work acceptably for using with shells.
  Simple curses programs (top, systat, tetris) and more complicated ones (mutt,
  emacs) that don't require scrolling regions (ESC[r) mostly work fine
  (including mutt, emacs). No status bar yet and no key remapping or other
  customisation.

$Id: CHANGES,v 1.298 2009-07-01 22:08:33 nicm Exp $

 LocalWords:  showw utf UTF fulvio ciriaco joshe OSC APC gettime abc DEF OA clr
 LocalWords:  rivo nurges lscm Erdely eol smysession mysession ek dstname RB ms
 LocalWords:  dstidx srcname srcidx winlink lsw nabc sabc Exp Tiago Cunha dch
 LocalWords:  setw Chisnall renamew merdely eg Maier newname selectw neww Gass