CHANGES FROM 1.8 to 1.9, 20 February 2014

NOTE: This release has bumped the tmux protocol version. It is therefore

advised that the prior tmux server is restarted when this version of tmux is

installed, to avoid protocol mismatch errors for newer clients trying to

talk to an older running tmux server.

Incompatible Changes

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

* 88 colour support has been removed.

* 'default-path' has been removed. The new-window command accepts '-c' to

cater for this. The previous value of "." can be replaced with: 'neww -c

$PWD', the previous value of '' which meant current path of the pane can

be specified as: 'neww -c "#{pane_current_path}"'

Deprecated Changes

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

* The single format specifiers: #A -> #Z (where defined) have been

deprecated and replaced with longer-named equivalents, as listed in the

FORMATS section of the tmux manpage.

* The various foo-{fg,bg,attr} commands have been deprecated and replaced

with equivalent foo-style option instead. Currently this is still

backwards-compatible, but will be removed over time.

Normal Changes

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

* A new environment variable TMUX_TMPDIR is now honoured, allowing the

socket directory to be set outside of TMPDIR (/tmp/ if not set).

* If -s not given to swap-pane the current pane is assumed.

* A #{pane_syncronized} format specifier has been added to be a conditional

format if a pane is in a syncronised mode (c.f. syncronize-panes)

* Tmux now runs under Cygwin natively.

* Formats can now be nested within each other and expanded accordingly.

* Added 'automatic-rename-format' option to allow the automatic rename

mechanism to use something other than the default of

#{pane_current_command}.

* new-session learnt '-c' to specify the starting directory for that session

and all subsequent windows therein.

* The session name is now shown in the message printed to the terminal when

a session is detached.

* Lots more format specifiers have been added.

* Server race conditions have been fixed; in particular commands are not run

until after the configuration file is read completely.

* Case insensitive searching in tmux's copy-mode is now possible.

* attach-session and switch-client learnt the '-t' option to accept a window

and/or a pane to use.

* Copy-mode is only exited if no selection is in progress.

* Paste key in copy-mode is now possible to enter text from the clipboard.

* status-interval set to '0' now works as intended.

* tmux now supports 256 colours running under fbterm.

* Many bug fixes!

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.

* Panes can now emit focus notifications for certain applications

which use those.

* run-shell and if-shell now accept formats.

* 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.