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Update CHANGES for 3.7.

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Nicholas Marriott
2026-06-07 12:00:57 +01:00
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CHANGES FROM 3.6b TO 3.7
* Add floating panes. These are panes which sit above the layout ("tiled
panes") like popups but unlike popups are not modal and behave like panes (so
the same escape sequence support). Floating panes are created with the
new-pane command, bound to * by default.
Currently floating panes can only be moved and resized using the mouse. The
default second status line (if status-format is set to 2) has changed to show
a list of panes. Many obvious features are not yet available for floating
panes (notably the ability to swap floating panes, resize them using
resize-pane, change them between floating and tiles, and restore custom
layouts with floating panes).
Mostly written by Michael Grant with help from Dane Jensen; testing and fixes
from others.
* Allow run-shell arguments after a shell command to be expanded as #{1}, #{2}
and so on (from Rasmus Thystrup Karstensen in issue 5121).
* Tighten up read-only checks on attach-session, detach-client and
switch-client so that a user should be able to only detach their own client
(reported by John Walker).
* Increase escape delay if the buffer contains a partial paste end, fixes
issues with at least Windows Terminal (from jing dot empty at gmail.com issue
5088).
* When mode-keys is set to vi, do not allow the cursor to go into the invisible
extra cell to the right of the visible text; this is closer to what vi(1)
does (from Max Vim in issue 5070).
* Add a five second limit on pasting for terminals which mysteriously lose the
end sequence if the paste is too big (that is, Terminal.app) (reported by
Garri Djavadyan in issue 4527).
* Show file open errors more sensibly (reported by Meriel Luna Mittelbach in
issue 5081).
* Update supported features list for Foot terminal (from Meriel Luna Mittelbach
in issue 5079).
* Turn off the "is this a paste" guessing if the terminal supports bracket
pasting instead (issue 5031).
* Check FIONREAD for all panes not just piped panes.
* Add emacs-style recentre-top-bottom command to copy mode (issue 5053 from
sinyax75 at gmail dot com).
* Allow the indicator in tree mode to be customized by two new options:
tree-mode-preview-format and tree-mode-preview-style.
* Fix control client hang on exit after toggling no-output (issue 5049 from
Aaron Campbell). Also various other control mode fixes.
* Add support for line numbers in copy mode. There is a new
copy-mode-line-numbers option which may be set to off, default (tmux's normal
line numbering where 0 is the top visible line), absolute (first line in
history is 1), relative (relative to the cursor) and hybrid (current line is
absolute, others relative). Also adds copy-mode-line-number-style and
copy-mode-current-line-number-style to set the style of the line numbers.
When copy mode is entered with the mouse, line numbers stay off. From Leo
Henon in issue 5025.
* Make C-[ have the same bindings as Escape for terminals with extended
keys where they are different (issue 5035 from Eric Nicolas).
* Sanitize paste buffer names in paste_set and paste_rename (issue 5032 from
Barrett Ruth).
* Do not hang in run-shell when job_run fails (from Barrett Ruth in issue
5037).
* Add ability to forward progress bar to outside terminal (issue 4972
from Eric Dorland).
* Translate keypad keys to text in prompt input (from Barrett Ruth in issue
4996).
* Sanitize pane titles and window and session names more consistently and
strictly, prevents C0 characters and other invisible characters causing
problems (reported by Chris Monardo in issue 4999).
* Make clock visible on terminals without colours (from Manuel Einfalt in issue
5001).
* Add detach to default session menu (suggested by Przemyslaw Sztoch).
* Include window format variables for pane notifications (issue 5007 from Saul
Nogueras).
* Limit precision to 100 for formats to stop silly formats from running out of
memory, reported by z1281552865 at gmail dot com. Also various other similar
changes, mostly found by OSS-Fuzz.
* Add WAYLAND_DISPLAY to default update-environment, issue 4965 from wgh at
torlan dot ru.
* Add -C flag to command-prompt to match display-message -C (do not freeze
panes) (from Barrett Ruth in issue 4978).
* Cache user from getpwuid because it can be very expensive on some
platforms (from Ben Maurer in issue 4973).
* Add remain-on-exit key to keep pane around until a key is pressed (from
Michael Grant).
* Add some new mouse ranges called "control0" to "control9" and use to add some
mouse controls to the pane state line (from Dane Jensen with some bits from
Michael Grant).
* Handle OSC 9;4 progress bar sequence and store in format variables (from Eric
Dorland in issue 4954).
* Correctly size buffer used for parsing clipboard sequences (from Michal
Majchrowicz).
* Limit MSG_COMMAND argument to between 0 and 1000 to prevent a misbehaving
client from crashing the server (from Michal Majchrowicz).
* Reorganize host keys are represented internally so they can be built more
easily (from Dane Jensen in issue 4953).
* Add new fuzzers for command parsing, formats and styles (from David
Korczynski in issue 4957). Also fix various issues shown from these.
* Add bracket_paste_flag format flag (from George Nachman in issue 4951).
* Use \- for hyphens in tmux.1 to cause newer groff versions to render them
correctly (from Keith Thompson in issue 4948).
* Various minor code improvements and fixes from Pavel Lavrukhin (issue 4936
and others).
* Use window options for cursor-style to avoid crash when no pane (from Arden
Packeer in issue 4942).
* Fix issue where popup window gets overwritten by background updates (from
Conor Taylor in issue 4920).
* Protect against overflow when scrollbar is off screen (from san65384 at gmail
dot com in issue 4933).
* Copy hyperlinks when redrawing popup so they do not vanish (from Antoine
Gaudreau Simard in issue 4925).
* Work around systemd killing panes early during system shutdown by creating
dependencies from the panes to the service which started tmux (issue 4926
from Dmitry Torokhov).
* Allow codepoint-widths to accept ranges (from san65384 at gmail dot com in
issue 4930).
* Add a short builtin help text for each mode accessible with C-h (based on
code from Patrick Motard in issue 4751).
* Draw message as one format, allowing prompts and messages to occupy only a
portion of the status bar, overlaying the normal status content rather than
replacing the entire line. A new message-format option now controls the
entire message (like status-format). The message-style option now need to
include "fill" in order to cover the whole width (the default has
"fill=yellow"). From Conor Taylor in issue 4861.
* Add next/previous variables for windows in W: loop (from Conor Taylor in
issue 4856).
* Various bug and memory leak fixes from Renaud Allard (issue 4916).
* Add pane_pipe_pid with pipe file descriptor.
* Make -c work with new-session -A (from Jody Frankowski in issue 4906).
* Allow copy mode to work for readonly clients, except for copy commands (from
Dane Jensen).
* Pass paste buffer through vis(3) when pasting to prevent buffers containing
for example the bracket end sequence causing issues, a new -S flag disables
(reported by Mason Davis).
* Add sorting (-O flag) and a custom format (-F) to list-keys (from Dane Jensen
in issue 4845).
* Add scroll-exit-on, scroll-exit-off, scroll-exit-toggle commands to copy mode
(from xcdnlgd at hotmail dot com in issue 4884).
* Respond to DECRQM 2026 (from David Turnbull in issue 4887) and various others
(from Ayman Bagabas in issue 5118).
* Fix various memory leaks reported by Huihui Huang (issue 4872).
* Pass which clipboard is set through to the terminal (from Axel Lindskog in
issue 4858).
* Reuse extended entry when clearing RGB cell, to prevent memory growth when
cells are repeatedly cleared (from Michael K Darling in issue 4862).
* Do not write before buffer when parsing empty clipboard or palette replies,
or try to allocate zero bytes with an empty clipboard sequence (reported by
DongHan Kim).
* Various bug fixes and code improvements from Conor Taylor (issue 4848).
* Clear search counts when clearing marks in case of repeated search (reported
by Daniel Pereira in issue 4817).
* Make OSC 52 work in popups (from gogongxt at 163 dot com in issue 4797).
* Refresh copy mode when style changes (from Josh Cooper in issue 4830).
* Make sorting code common and add -O for sorting to the list commands (from
Dane Jensen in issue 4813).
* Do not treat cells as empty unless the background colour stays the same,
fixes invisible clock in clock mode (reported by Theo Buehler).
* When history-limit is changed, apply to existing panes, not just new
ones (issue 4705).
* Reevaluate menu and popup styles on each draw to allow them to change when
options change (from Josh Cooper in issues 4828 and 4829).
* Handle theme keys earlier so they are processed even if a popup is open (from
Josh Cooper in issue 4827).
* Fix window-size=latest not resizing on switch-client in session groups (from
Ilya Grigoriev in issue 4818).
* Add -e flag to command-prompt to close if empty (from Dane Jensen in issue
4812).
* Correctly draw indicators when pane-border-indicators is set to both
(reported by Ilya Grigoriev in issue 4780).
* Remember last pane or type of location for double and triple clicks and
correctly handle it changes between first and second or second and third
(issue 4795 from Shaobo Song).
* Add paste to the default pane menu (issue 4763).
* Reduce request timeout to 500 milliseconds to match the extended escape-time,
and discard palette requests if receiving a reply for a different index.
* Extend escape timeout if there are active forwarded requests not just
tmux's own requests (issue 4793).
* Correct redrawing of wide characters when overwritten (reported by Jake
Stewart in issue 4737).
* If cannot find a terminator for palette responses, treat as a partial key not
complete (issue 4749).
* Do not send theme unless it has changed, and do not send immediately when
updates are enabled (issue 5787).
* Do not use ;;s in list-keys output as it is confusing and cannot be
parsed on input (from Patrick Motard in issue 4750).
* Redraw pane borders when entering or leaving alternate screen (from Mike
Jonkmans in issue 4788).
* Add focus-follows-mouse option (from Barry Wasdell in issue 4771).
* Add selection_mode format variable for copy mode (from Mike Jonkmans in issue
4773).
* Add prompt-command-cursor-style (from Joshua Cooper in issue 4765).
* With status-keys vi, move the cursor left by one when pressing Escape to
enter command mode, like vi (issue 4767 from Joshua Cooper).
* Add {current}/{active} for -t for current window or active pane (from Manuel
Einfalt, issue 4766).
* Add support for applications to use synchronized output mode (DECSET 2026) to
prevent screen tearing during rapid updates (from Chris Lloyd in issue 4744).
* Do not set a default prompt cursor colour because some terminals (urxvt, st)
do not support the reset sequence (issue 4759).
* Add a scroll-to-mouse command for copy mode to scroll to the mouse position
and bind to the scrollbar, brings the scrollbar keys into line with the other
mouse keys (from Michael Grant in issue 4731).
* Bump the maximum number of SIXEL images to 20.
* Fix key code for M-BSpace (issue 4717).
* Fix calculation of scaled SIXEL size (from nincsnevem662 at gmail dot com in
issue 4739). Also various other fixes and improvements for SIXEL.
* Fix a race between fork and pane_current_path, most noticeable on systems
where starting processes is slow (issue 4719).
* Fix mouse position calculation on scrollbar with pane status line at the top
(issue 4738 from Michael Grant).
* Do not read outside buffer if format is a single #, and do not loop forever
if UTF-8 is unfinished in a format (reported by Giorgi Kobakhia in issue
4735).
* Add a missing skin tone character (from Jake Stewart in issue 4736).
* Allow UTF-8 characters to be combined in either order (reported by Jake
Stewart in issue 4726).
* Do not show scrollbar when entering copy mode from a pane in the alternate
screen (issue 4728 from Michael Grant).
* Fix the size calculation for left-right windows used to spread out cells
horizontally evenly (from Michael Grant in issue 4724).
* Add a get-clipboard option which when enabled (the default is off) and a
clipboard is requested from a pane, requests it from the terminal and
forwards to the requesting pane; also remove the now-redundant
forward-to-pane ability from "refresh-client -l" (issue 4275).
* Fix the noattr attribute in styles, used by the default mode-style (issue
4713).
* Do not remove TERM for commands run from config file (regression reported by
Dennis Eriksen).
* Add seconds options for clock mode (from augustus7613 dot mail at pm dot me,
issue 4697; later improved by Joao Pedro in issue 4760).
CHANGES FROM 3.6a TO 3.6b CHANGES FROM 3.6a TO 3.6b
* Remove images from the correct list when they are removed while in the * Remove images from the correct list when they are removed while in the