Kitty 0.50

porridgeraisin — Wed, 4 Nov 2026 08:57:10 +0000

kitty is a feature-rich, cross-platform, fast, GPU based terminal. To update kitty, follow the instructions.

Detailed list of changes

0.50.0 [2026-11-03]

Allow docking kitty windows to the edges of other windows or of the tab, for status bars, file trees, etc. Create them with launch --type=window-dock or launch --type=tab-dock, see Docked windows
A new option restore_session_after_logout to save the state of every kitty instance, including scrollback, when logging out, restarting or shutting down and restore it the next time kitty starts. On macOS, the state is encrypted with a key in the keychain. On Linux, it requires the Inhibit desktop portal. See Restoring kitty after logging out (#1197, #10659)
Allow using tabs like named workspaces: A new launch --focus-existing option to focus an existing window or tab instead of creating a new one, a new by-title value for launch --location to keep tabs in alphabetical order and new options for kitten @ detach-window and the detach_window action to send windows to a named tab, creating it if needed (#10627)
Wayland: The client side window decorations used on compositors such as GNOME now look like native GNOME decorations and follow the desktop titlebar font, text scaling, button layout and titlebar click action settings (#10766)
Wayland: Support touchscreens. A tap is a click, a finger that moves scrolls with momentum, and a finger held still before it moves selects text (#5432, #10551)
Custom shaders: New cursor-trail-railgun, cursor-trail-torpedo and cursor-trail-pixiedust shaders that make particles fly off the cursor as it moves, in the style of neovide. Shaders can now be controlled with key presses via the new shader_event action (see Controlling shaders with key presses), can be faded in and out, reversed and looped with new animation_* pipeline directives and can define a pointer_map() function so that clicks and selections land on the text shown under the mouse, which the crt shader now uses, see Shaders that move content. Also fix animations becoming jerky after kitty has been running for a few hours, shaders specified by path not being found and various pipeline bugs (#10587, #10667, #10693, #10595, #10694, #10639)
Graphics protocol: Add two new indexed color image formats whose pixels are indices into the terminal color palette, so that images change color along with the color scheme, and allow clients to detect support for individual protocol features, such as animation and Unicode placeholders, via the new e query key, see Querying support for protocol features (#9379, #10732)
Support the Program Status Protocol (OSC 7501) that lets programs report whether they are working, finished, failed or blocked waiting on the user. Shown in the tab bar via a new tab.program_status field for tab_title_template, see Reporting the status of a program
Automatic color themes: When the system switches between light and dark, keep colors set by programs running in a window, by the ssh kitten, by launch --color or launch --copy-colors, and use the current theme colors when a program restores its saved colors. launch --color colors now also survive config reloads. The ssh kitten can use different color schemes for remote hosts in dark and light mode via the new kitten-ssh.color_scheme_dark, kitten-ssh.color_scheme_light and kitten-ssh.color_scheme_no_preference options (#10724)
Layouts: Align the borders of neighboring windows and keep the gaps between them uniform, and add a new option collapse_window_margins to have the margins of neighboring windows collapse into each other instead of adding up (#10508)
Window resizing: A new --strategy=edge mode to select and move a specific internal divider in the Splits layout, and hold Alt with a resize letter to take a fraction of the remaining resize steps, configurable with the new --fraction option
Scale the thickness of box drawing characters, cursors and the window title bar border with the font size, so they no longer look too thin when zoomed in or too thick when zoomed out. At the configured font_size nothing changes (#10362)
mouse_map can now map the scroll wheel, via the wheel_up, wheel_down, wheel_left and wheel_right buttons, for example, to change the font size with Ctrl+scroll
A new option hyperlink_target_position to control where the URL shown by show_hyperlink_targets is displayed, including as a browser style tooltip next to the mouse cursor (#10770)
Show the hand pointer and hover highlighting over links only when the pressed modifiers match a configured mouse action for opening the link with a single click, updating immediately when modifiers are pressed or released
quick-access-terminal kitten: New kitty +kitten quick_access_terminal --if-running, kitty +kitten quick_access_terminal --listen-on and kitty +kitten quick_access_terminal --hold options to run programs in an already running quick access terminal, use a fixed remote control socket and keep the terminal open after the program exits (#10603)
Sessions: A new os_window_position keyword and a new --os-window-geometry option for save_as_session to save the size, position and state of OS Windows in session files. Also fix the OS Window size and os_window_title in sessions sometimes being ignored (#10675)
Command palette: Show action and kitten aliases at the top when the search query is empty, so they can be used to pin frequently used actions (#10711)
Vertical tab bars: When tab_title_max_length is set, size the tab bar to fit the decorations of the current tab_bar_style, allowing much narrower tab bars (#10680)
Linux/BSD: Detect MIME types for open actions and kittens using the shared-mime-info cache, matching the rest of the desktop, including files without an extension, such as Makefile, and MIME type aliases (#3056)
IME: Keep the candidate window anchored at the start of the pre-edit text and at the cursor, so it no longer jumps around while composing text. On macOS, commit in-progress IME or dictation text instead of discarding it when the OS window loses focus (#10642, #10644)
Shell integration: Make the kitty terminfo files available in commands run via run0, similar to sudo (#10692)
kitty --config=NONE now also skips the automatic color theme files, open-actions.conf, launch-actions.conf, mime.types, paste-actions.py, notifications.py and the custom window icon in the kitty config directory
Processes kitty inserts to wrap the program it runs, such as /usr/bin/login on macOS or the wrapper for launch --hold, are now skipped when reporting the pid, working directory, command line and environment of a window in kitten @ ls and when matching windows. Also fix launch --cwd=root using the working directory of the foreground process instead of the root process while the shell is running a command
Nightly builds now show the date and hash of the commit they were built from in the output of kitty --version and kitten --version
Do not render between render frames to reduce flicker from programs that draw with many small partial updates (#10749)
Performance: Faster growing of the GPU sprite cache, particularly on macOS, less CPU usage with a non-zero input_delay and no continuous re-rendering when a selection is present and the window is scrolled back (#10714)
Remote control: Fix a crafted request being able to bypass password based remote control authentication by masquerading as a cancellation of an asynchronous request
Remote control: Fix many commands, including action, send-key, set-colors, set-background-opacity, set-font-size, ls, run and set-enabled-layouts, ignoring options, reporting false success or silently misinterpreting invalid input, particularly when used in remote_control mappings. set-colors now parses color files the same way as kitty.conf. Also fix a single unresponsive peer blocking all remote control communication and a crash when using damaged images with set-window-logo or set-background-image (#10672, #10632, #10688, #10690, #10715)
Fix various terminal emulation bugs, including in origin mode cursor position reports, erasing multicell characters, the CHT escape code and copying text containing tabs, wide characters being drawn on the wrong row after colliding with scaled text, emoji sequences being split into multiple cells when wrapped, text typed into a new window before the program is ready sometimes being garbled, as well as a heap buffer overflow, an out of bounds write and a use-after-free when reloading the config (#10609, #10729, #10632, #10682, #10767)
Graphics protocol: Allow shared memory object names without a leading slash again, for sandboxed macOS applications, and fix various bugs with animation frames and Unicode placeholders (#10684, #10599, #10632)
Fix various window and tab management bugs, with focus moving to the wrong window on close, drag and drop onto title bars, visual window selection, Grid layout placement, title bar padding and tab titles being truncated too early. detach_tab now shows custom titles in the OS Window chooser (#10640)
Fix render jitter when scrolled back with a partial line and the client is using the synchronised rendering escape code (#10794)
Fix bold or italic Nerd Font icons sometimes being rendered using glyphs from an unrelated font, the cursor trail not always being shown when focus moves to a different window, watcher entries not being removed on config reload and changing text marker colors at runtime, for example with kitten @ set-colors or automatic theme switching, applying the colors of each marker to the next one (#10591)
ssh kitten: Preserve the permissions of copied directories, fix copying files outside HOME whose paths share its prefix and files in HOME being copied to an absolute path with --symlink-strategy=resolve when HOME is a symlink, fix hanging when re-using a shared connection that has silently died and fix colors 16-255 being set to white with themes that do not define them (#10691, #10661, #10727, #10737)
Desktop UI kitten: Fix D-Bus activation when kitten is installed in a path containing spaces or quoting characters (#10784)
Automatic color themes: Stop using cached colors and background images after the corresponding theme file has been deleted and apply theme files created after kitty was started when reloading the config (#10786)
Themes kitten: Fix overwriting the Unicode input kitten’s recent entries and input mode, and vice versa, by using separate caches (#10780)
Remote file kitten: Preserve the local edited copy and show its recovery path when the final upload fails, including when the SSH connection has died (#10789)
Transfer kitten: When receiving files, replace existing symbolic and hard links at the destination instead of overwriting the files they point to, and write to a temporary file that is renamed into place, so an interrupted transfer no longer leaves a truncated file behind (#10713)
Drag and drop kitten: Reject copying or moving a directory into itself or one of its subdirectories, and moving a directory into a symlink that points inside it, which would delete the moved files. When moving, do not delete sources that were replaced during the drop, for example by files merged through a symlink in the destination. Respect overwrite confirmation for case and Unicode equivalent names on filesystems that treat them as aliases, list the existing files that will be overwritten under their actual names, including inside symlinked directories, and fix dropping a directory over an existing file. No longer rename remotely dropped files whose names differ only in case on case sensitive filesystems (#10769, #10772)
Drag and drop protocol: Fix base64 data with padding at the end being rejected, as allowed by the protocol (#10777)
Clipboard kitten: Fix only the last of several outputs that use the same MIME type being saved, for example with kitten clipboard -g picture.png picture.jpg, the data is now downloaded and decoded only once for all such outputs. Reject duplicate output files, including ones that differ only in case on case-insensitive filesystems or whose paths contain a symlink followed by ... Fix a race when replacing an existing output file, losing the original file if writing it fails and kitten clipboard -g -m . formats.txt silently doing nothing. Also preserve the permissions of and follow symlinks at existing output files (#10738, #10744)
Kittens: When saving files, such as themes, config files or clipboard output, write to the target of a symlink even when the target does not yet exist, instead of replacing the symlink with a regular file (#10740)
Kittens: Fix laggy mouse selection and failures comparing remote directories in the diff kitten, Unicode quotes not being removed from around paths and URLs in the hints kitten, the order of styles with negative or closely spaced fractional axis values in the choose-fonts kitten, various bugs in the choose-files, quick-access-terminal and other kittens and reject command-line options missing their required value (#10634, #10641, #10676, #10687, #10730)
Wayland: Fix a crash on compositors without cursor-shape support, kitty being disconnected by GNOME when showing a long covered window, the app_id being lost when hiding and showing windows, kitty --os-window-tag not setting the window tag and various drag and drop bugs (#10597, #10602, #10604, #10759, #10632)
Linux: Fix momentum scrolling up or left, X11 wheel events from sources without smooth scrolling being ignored and various desktop notification bugs. Notifications now identify kitty’s desktop file, so desktops such as KDE can group them (#10625, #10695, #10610, #10721)
macOS: Fix padding rendering black after sleep, OS windows not staying on all spaces, a duplicate path when dropping items from Apple Mail, emoji from a monochrome emoji font such as Noto Emoji not using the foreground color, a memory leak, reloading config causing Apple injected shortcuts to not work and kitty freezing when opening a new window while another entry in /dev is stuck (#10708, #10581, #10628, #10673, #10741, #10757, #10793)
zsh: Respect the user’s descriptions format style for completion group headings, fixing literal %B markers appearing with fzf-tab, and fix a “maximum nested function level reached” error at every prompt after interrupting a command run at shell startup, for example via a session file (#10748, #10768)

0.49.2 [2026-10-01]

Fix reverse-video extra cursors to use the color type encoded by the multiple-cursors protocol.
Make reverse-video cursors follow dimmed text colors while keeping text under block cursors legible.
A new option detect_url_regex to detect arbitrary text, such as file references in compiler output, as clickable URLs under the mouse (#10407)
Reduce input latency by processing small amounts of program output, such as the echo of typed characters, immediately instead of waiting for input_delay (#10560)
Drag and drop: Restore the previously active tab after dropping a dragged tab on the same OS window’s tab bar, even if it was reordered after a hover switch
Drag and drop: Fix an out of bounds memory access when parsing a URI list sent by a remote client that does not end with a newline (#10618)
Sessions: Expand launch option variables when an option value matches the command name
Preserve transparent background colors when applying unrelated launch color overrides
ssh kitten: Preserve SSH option values following a spaced --kitten option
Fix a memory leak when loading a corrupt PNG image that has an embedded ICC color profile
Custom shaders: The builtin dim-inactive-windows shader no longer dims the tab bar and the padding, border and margin around the active window (#10524)
Custom shaders: The builtin northern-lights shader is now about twice as fast. Its MARCH_STEPS setting can now be lowered to trade a little quality for even more speed on slower GPUs
Custom shaders: A new cursor-trail-motion-blur shader that makes the cursor trail glide smoothly during fast cursor movements
Vertical tabs: Improve rendering of tabs when using the powerline tab_bar_style
Graphics: Fix images briefly disappearing for one frame the first time an image is replaced during a synchronized update (#10538)
X11: Fix copy and paste targeting the wrong OS window when the keyboard focus is set to PointerRoot or None
diff kitten: Fix freezes and very high memory use when a very long line, such as in a minified file, is changed
themes and choose fonts kittens: Fix search freezing for many seconds when typing a long query, such as the full name of a theme
macOS: Fix a custom dock icon reverting to the stock icon after a progress bar is cleared (#10545)
macOS: Fix a regression in the previous release causing background_opacity less than one with no background_blur making the titlebar transparent (#10540)
macOS: Fix regression in 0.49 that caused rounded rect shader to not work on ancient macs with AMD GPUs (#10549)
diff kitten: Fix search not finding matches at the end of a line
hints kitten: Fix delays of many seconds when selecting paths or line numbers on a screen with long lines that contain no spaces
File transfer: Fix a security issue where a malicious program on the remote machine could bypass the transfer confirmation prompt when no file_transfer_confirmation_bypass password is set
Fix an out-of-bounds memory access when drawing a multi-line text sized character with the cursor below the bottom margin of the scroll region
Fix a heap buffer underflow when parsing ANSI-C quoted strings in the command line sent by shell integration via the OSC 133 escape code
macOS: Fix a regression in 0.49 that caused rendering issues after wake from sleep or display re configuration under memory pressure due to a bug in Apple’s OpenGL drivers (#10571)

0.49.1 [2026-09-24]

Drag and drop: Hover over a tab while dragging a window or a single window tab to switch to it and choose a split position. Drop a window at a tab edge or gap to put it into a new tab at that position. Dragging tabs now shows an insertion marker rather than moving the other tabs during the drag. See Overview for details.
Splits layout: Dragging a divider now resizes only its adjacent regions, consistently after rearranging windows. Fix nested dividers not tracking mouse movement correctly, including when returning from a minimum size.
Splits layout: Fix windows in a nested split overlapping their neighbour by a couple of pixels when the split is resized down to its minimum size.
Splits layout: Fix the next split collapsing to a single line after equalizing a tab with only one window, or closing a window with equalize_on_window_close enabled (#10522)
icat: Fix a regression in 0.49.0 --transfer-mode=memory not displaying anything and --detect-support reporting files, because the names of the POSIX shared memory objects it created were missing the leading slash mandated by the graphics protocol (#10517)
Fix a packaging bug that could cause pipeline files to be omitted from some kitty builds
save_as_session: Show an error instead of saving next to the directory when the specified path is an existing directory (#10520)

0.49.0 [2026-09-21]

Support for Custom Shaders for adding various graphical effects (#10344)
Throughput performance improvements for a 15-35% real world improvement depending on workload
Add window_border_radius for rounded window borders (#10421)
A new option remap_modifiers to allow having modifier keys behave as different modifier keys (#10307)
A new option, padding_fill_strategy to control how the thin padding strips that appear when the window size is not an exact multiple of the cell size are colored. You can choose to have the padding colored to match the background of each neighboring cell, effectively extending the size of the cell or you can continue to use the existing behavior of using the background.
Splits layout: Add an optional proportional sizing policy that preserves adjusted window weights when adding, closing or repositioning windows. See Arrange windows for configuration (#10471)
The scrollbar option now takes a new value scrolled-or-hovered to also show the scrollbar when the mouse moves over the scrollbar region (#10345)
A new kitten @ screenshot remote control command to take a pixel perfect PNG screenshot of an OS Window, tab or window
A new kitten @ set-os-window-title remote control command to set the title for an already-open OS Window and optionally restore automatic title tracking when no title is specified
Wayland: Fix the first movement of the scroll wheel after reversing direction often not scrolling, with high resolution wheels such as the Logitech MX Master 3 (#10306)
Allow dragging selected text to other windows or applications with the mouse_selection drag_or_normal_select mouse action, in addition to its existing support for dragging links. See the configuration examples to enable it.
Vertical tabs: Improve handling of multi-line tab titles. Controlled via two new options: tab_title_max_lines and tab_title_template (#10303)
Vertical tabs: Improve rendering of tabs when using the fade tab_bar_style
remember_window_size now also remembers window maximized state (#10308)
Sessions: Also save/restore layouts other than the currently active layout (#10324)
Wayland: Fix clipboard sharing between kitty instances in containers with isolated PID namespaces and stale paste data when used with clipboard managers that restore application private MIME types (#10352, #10376)
When expanding a window in alternate screen mode use the most common background color as the color for the newly created lines leading to less visual flicker until the application can redraw itself (#10365)
macOS: Allow kitty OS Windows to participate in Split View tiling (#103701)
Allow dropping a tab containing a single window into another tab’s layout, using the existing window drop preview and preserving running programs. See Overview for details.
Port remaining built in kittens from Python to Go (#10371)
Splits layout: Fix dragging a border resizing the wrong split in nested layouts.
Linux: Fix drawing a screen containing many distinct codepoints that are not present in the main font causing a noticeable stall (#10496)
Graphics protocol: Fix scaled images (created with the r or c keys) being distorted instead of clipped when scrolled against a margin (#10377)
IME preedit text: use underline rather than reverse video (#10386)
Map mouse button presses in the padding around a window to the nearest cell, so that, for example, selections can be started by pressing in the padding. Presses in the margins and in the region around window borders used for dragging borders no longer start selections (#10393)
dnd kitten: Add an option to use file copies instead of hard links for copy drops (#10412)
Fix a malformed CSI escape sequence such as \e[?: corrupting the parser state so that subsequent SGR color codes are ignored (#10434)
Thai/Lao: Render the vowel sign AM (U+0E33/U+0EB3) correctly by widening the cell it combines into, matching wcwidth() based programs (#10477)
Text sizing protocol: A cell whose width was set explicitly with the w key is no longer narrowed by a subsequent U+FE0E variation selector
Fix dropping files or URLs onto a window being delivered to the wrong window, or ignored entirely, when the tab bar is at the top or on either side
Graphics protocol: Fix a regression in 0.45.0 that caused the overwrite composition mode for animation frames (a=f) to be controlled by the undocumented C key instead of the documented X key (#10379)
Graphics protocol: Fix chunked transmission of animation frame data (a=f) replacing the image’s root frame instead of creating or editing the animation frame, when the continuation chunks contain only the m key, as prescribed by the spec
Graphics protocol: Reduce memory usage and speed up image transmission by moving image data into the disk cache instead of copying it. Images transmitted with the transient usage hint no longer keep a redundant second copy of their data in memory for their entire lifetime
Graphics protocol: Fix a memory leak when transmitting an animation frame based on a frame with a long chain of references to other frames
Graphics protocol: Fix image data being lost or read back incorrectly in the rare case that an image was overwritten or deleted while its previous data was being written to the disk cache by the cache’s background thread
Drag and drop protocol: deny requests for drag data made before the user has actually dropped something onto the window ( CVE 2026-80432)
Drag and drop protocol: Deny drag sources that send identically named symlink/dir entries with an appropriate error ( CVE 2026-80430)
Drag and drop protocol: Fix a use-after-free when a drag source item is aborted mid-transfer, where the freed remote item was still read from and written to after the drag offer was torn down ( CVE 2026-95834)
Text sizing protocol: Fix a buffer overflow when a natural width text sizing escape code contains a grapheme cluster longer than four codepoints ( CVE 2026-80431)
ssh kitten askpass: Verify owner and permissions of SHM memory used for askpass ( CVE 2026-95835)
Graphics protocol: Fix a crash when transmitting image data via a file or shared memory object (t=f, t=t or t=s) and the client truncates it while kitty is reading from it.
Graphics protocol: Fix reading image data from a file or shared memory object at an offset (the O key) failing unless the offset happened to be a multiple of the system page size
Graphics protocol: Fix file descriptor leak that can be triggered by malicious clients
Graphics protocol: Make fileopen failure responses generic to avoid leaking any information about failed files
edit-in-kitty: harden the code used to parse messages from clients
Linux: kitty --single-instance: Only accept commands from processes running as the same user
Clipboard protocol: Report an EFBIG error to programs that try to write more data to the clipboard than allowed by clipboard_max_size, instead of silently truncating their data. Also fix clipboard_max_size being interpreted in units of TB rather than MB (#10399)
Color control protocol: Report unknown fields as unknown=<base64 encoded field name> instead of echoing the field name back verbatim, which allowed using the escape code to make the terminal emit arbitrary printable ASCII text ( CVE 2026-95832)
macOS: Fix dropping files that are provided as file promises pasting paths to files that no longer exist. The dropped files are now kept alive for ten minutes and removed when kitty quits (#10430)
macOS: Fix all signal handling being permanently disabled after the first window that used the graphics protocol is closed. This caused exited window shells to accumulate as zombie processes and also broke reloading the config with SIGUSR1 and quitting on SIGINT/SIGTERM/SIGHUP (#10436)
macOS: Fix long text from input methods being discarded when committed outside a key event (#10468)
Multiple cursors protocol: Fix hiding the main cursor with DECTCEM also hiding the extra cursors (#10489)
Add a new passthrough_and_end value for the --on-unknown option of map, that passes the unknown key through to the program and also exits the custom keyboard mode (#10490)
macOS: Allow input methods to read the text around the cursor, so that input methods that automatically insert a space between Latin and CJK text work (#10492)

0.48.2 [2026-07-30]

Wayland: Fix regression in previous release that broke drag and drop on Plasma (#10284)
diff kitten: Fix a rare crash when showing a large diff due to incorrect locking when highlighting
Allow the private DCS kitty-echo escape code to only echo numbers ( CVE 2026-72913)
Linux: Fix an approx 1MB memory leak when reloading the config, introduced in version 0.40.0 (#10290)
Desktop file chooser integration: when the specified directory does not exist, open file chooser at home directory (#10292)
Add support for terminal visibility reports
tab_title_template: Add a field that evaluates to the total memory used by all child processes in the tab (#10293)

0.48.1 [2026-07-24]

Wayland: fix a regression in the previous release that broke window sizing for on Hyprland/Sway with fractional scales and an initial specified size (#10268)
Wayland: fix a regression in 0.47.3 that broke dragging on the Niri compositor (#10271)
Wayland: get initial window size in cells working in most cases on Hyprland/Sway with fractional scaling by using the fractional scale of the primary monitor
Wayland: fix using remote control to resize OS windows on some tiling compositors leading to broken rendering
macOS: fix edge=none panel height shrinking when margin_top is non-zero in the panel/quick-access-terminal kittens (#10278)

0.48.0 [2026-07-18]

Implement vertical tabs by setting tab_bar_edge to left or right (#9855)
Graphics protocol: Add a new transient usage hint that clients can send to terminals to indicate an image is meant for only short duration use (#10092)
On first press in an unfocused OS Window/kitty window give it focus and pass the mouse event through to the clicked element. This is a behavior change but aligns with platform defaults on macOS. Linux has no platform defaults here as far as I can tell, so it gets to follow along. (#10233)
kitten @ get-text: Add support for alternate and alternate_scrollback extents to fetch text from the alternate screen buffer (#10165)
Wayland: Fix first OS window being a few cells too small when initial_window_width/initial_window_height are set in cells and a fractional display scale is in use (#10146)
macOS: New option macos_ns_window_layer to more precisely control what layer panel OS windows are placed on (#10116)
macOS: New option macos_use_physical_screen_frame to allow panel OS Windows to cover the macOS global dock bar (#10116)
kitty binary builds are now built on Ubuntu 22 upgraded from Ubuntu 18 for improved performance from better compilers
macOS: Fix incorrect horizontal alignment when using text sizing protocol (#10179)
edit-in-kitty: Return exit code from underlying editor process on exit (#10198)
Make erasing last command robust against commands with no output and commands in the scrollback (#10201)
Fix superfluous margin visible to the left and right of the tab bar when background_opacity is less than one and the window width is not a multiple of the cell width (#10212)
hints kitten: Add a new flag kitty +kitten hints --prefix-free to generate hints without a shared prefix (#10210)
Wayland GNOME: Fix dragging a window title bar to the “+” button failing to create a new tab when there is only a single tab (#10222)
choose-files kitten: Add a --mode=all to select either an existing file or directory (#10208)
Add support for editing files in sublime text and zed at specified line number (#10224)
choose-file kitten: Use a full readline editor for the search box. Also allow remapping the up/down/home/end keys to use for editing instead of navigating the file list (#10225)
Fix remote_control_script not working in a kitty instance run from inside another kitty instance
quick-access-terminal kitten: Allow configuring the layer on which to display the terminal (#10242)
cursor_trail_start_threshold now optionally accepts two values to set x (horizontal) and y (vertical) thresholds independently (#10246)
scroll-window remote control command: Fix a regression that broke scrolling by pages (#10253)
Bypass libc malloc for history buffer to avoid libc pool policies causing apparent memory leak (#10254)
Cursor trail: Do not run the trail shader when the cursor is hidden, saving resources (#10255)
Graphics: Fix incorrect calculated cursor position when placing images with X/Y cell offsets (#10256)
macOS: Disable macOS one time code autofill popups (#10250)
Add support for DECSTR soft screen reset escape code (#10263)
macOS: Fix quick-access-terminal appearing on the wrong space (the fullscreen app’s space) when triggered from a different space on macOS Tahoe (#8740)

0.47.4 [2026-06-15]

Linux: Fix a regression in the previous release that broke rendering of bitmap color fonts (#10145)
Linux: Allow fake italics defined via a matrix in fontconfig settings to work for fonts like Fira Code that do not ship with an italic face (#10120)

0.47.3 [2026-06-12]

macOS: Show a key symbol on the active tab if the macOS Secure Input feature is enabled
Fix regression that broke unserialization of splits layout in previous release (#10124)
Fix focus_follows_mouse switching the active window when returning to a desktop/space, even though the mouse did not move. Now the window under a stationary cursor is left alone, while moving the mouse across windows still switches focus as before.
Sanitise responses to color control escape codes to avoid command injection for shells that do not use the kitty keyboard protocol ( CVE 2026-54057)
choose fonts kitten: Fix a rare timing based race causing kitten to crash at startup (#10128)
Wayland: Fix mouse input getting broken when starting a tab drag and releasing the mouse button before the drag is actually registered (#10136)

0.47.2 [2026-06-07]

Allow dragging to move scrollbar after clicking on track when scrollbar_jump_on_click is enabled (#10085)
macOS: Fix regression in 0.47.0 that broke passing Cmd+C on to terminal applications when no text is selected (#10087)
kitten @ set-background-image: Fix --layout=configured changing layout to centered instead (#10089)
Splits layout: add an equalize action and an equalize_on_window_close option to redistribute split space proportionally (#3489)
Fix matching var/env on tabs not working as expected (#10095)
When watching for changed config files do not recursively watch all sub directories of the directory containing the config file (#10102)
File transfer protocol: use O_NOFOLLOW when opening regular files ( CVE 2026-54055)
dnd kitten: Protect against drops from malicious sources ( CVE 2026-54056)

0.47.1 [2026-05-28]

Fix a regression in the previous release that caused copy_or_noop to stop working correctly (#10041)
macOS: Fix a regression in the previous release that caused URLs to be quoted when dropping into shells (#10054)
Fix a regression in the previous release that broke automatic color scheme changes when using a background image (#10058)
Fix auto_reload_config not working when kitty.conf is a symlink (#10066)
Fix a regression in the previous release that broke dragging of URLs to the shell prompt from programs that dont support MOVE drag operations
Preserve user-set tab stops across window resizes instead of resetting to 8 column default
Add support for the DECST8C escape sequence (CSI ? 5 W) to reset tab stops to every 8 columns
X11: Fix panel/quick-access-terminal windows not staying on top under KDE after they are hidden once (#10082)

0.47.0 [2026-05-19]

A new Drag and drop kitten to allow drag and drop of files from your shell to any GUI program even across SSH (#9984)
A new option palette_generate to automatically generate the 256 color palette from the first 16 colors (#9426)
For builtin key mappings automatically fallback to matching the US-PC layout key when the pressed key has no matches and is a non-English character (#9671)
Allow drag and drop of windows to re-arrange them, move them to another tab/OS Window or detach them into a new OS Window. See toggle_window_title_bars to temporarily show window title bars to drag them around (#9626)
Have scroll_line_up and scroll_line_down smooth scroll by default. Can be restored to old behavior by re-mapping without the smooth argument (#9689)
Draw a progress bar at the top of the window when a program reports progress using the OSC 9;4 escape sequence, controlled by progress_bar (#9777)
Automatically reload configuration on changes, controlled by auto_reload_config
Allow specifying multiple background images for background_image that are stored on GPU to allow fast image switching (#9836)
Remote control: Expose session_name and last_focused_at in the output of kitten @ ls for each window (#9732, #9799)
Allow optionally dragging URLs with the mouse, see left (#9804)
Change focus_follows_mouse to switch the active window only when the mouse crosses into a different window, instead of on every mouse motion event. Prevents accidental mouse bumps from undoing a keyboard-driven window switch.
Wayland: Use hold gestures to cancel momentum scrolling when fingers are placed on the trackpad, for a more natural kinetic scrolling experience (#9863)
macOS: Switch to new Tahoe style application icon with different background in light and dark modes
Fix thickness of diagonal lines in box drawing characters not the same as horizontal/vertical lines (#9719)
Graphics protocol: Fix crash when handling invalid PNG image with direct transmission ( CVE 2026-33633)
Graphics protocol: Fix crash when handling invalid offset values in graphics compose commands ( CVE 2026-33642)
X11: Fix a regression in the previous release that caused an occasional crash on input device removal (#9723)
XWayland: Fix a regression where some wheel mice were not scrolling properly (#9770)
Command palette: Improve searching to use word level matching (#9727)
hints kitten: A new option to set the background color of matched text (#9745)
The show_hyperlink_targets option now allows specifying a keyboard modifier so that target URLs are only shown on hover when the modifier is pressed (#9741)
Fix a spurious mouse button release event being sent when dragging out of an OS window causes focus loss
Fix scrollbar hover/interaction not working when the scrollbar is drawn in the window margin area (#9756)
Fix completion for edit-in-kitty not including some common text file types
Allow holding the Alt key and triple-clicking to select from the first cell even if it is empty (#9758)
Fix double click to rename tab being triggered too easily (#9774)
Fix a crash when user tries to select while the client program is using synchronised rendering and generating large amounts of output (#9778)
macOS: Add Copy and Paste menu items to the Edit menu in the global menu bar (#9780)
Fix dragging of splits layout borders sometimes moving in the wrong direction or having no effect (#9447)
Fix triple-click line selection and double-click word selection not extending wrapped lines beyond the edges of the viewport
Password input in kittens: hide the cursor and display a blinking 🔒 at the end of typed characters to make it visually clear the user is entering a password
edit-in-kitty: Ignore environment variables as some editors execute code present in env vars. Similarly ignore conf file specifications for colors ( CVE 2026-42851)
Command palette ctrl+shift+f3: nicer grouping of aliases and combined actions (#9819)
hints kitten: Fix trailing punctuation not being removed from URLs (#9828)
Fix copy/paste dropping spaces at soft-wrap boundaries when strip_trailing_spaces is set (#9834)
Allow setting negative values for inactive_text_alpha to control whether to only fade inactive windows or unfocused windows (#9837)
A new option macos_fullscreen_ignore_safe_area_insets to control whether to ignore the notch space when using macos_traditional_fullscreen (#9841)
Fix some responses from terminal sometimes leaking into shell after kitten exit (#9839)
Render block elements from the Unicode Symbols for Legacy Computing Supplement block (U+1CC00–U+1CEBF): separated block quadrants, separated block sextants, one sixteenth blocks, and one quarter block partial fills (#9849)
Improve performance of using active process data when rendering the tab bar by only scanning processes once per second (#9862)
macOS: Fix occasional phantom cursors being drawn on screen (#9725)
diff kitten: Keep the current (topmost) filename visible when scrolling, controlled by a new option kitten-diff.sticky_header (#9891)
Add an option to focus_follows_mouse to only switch focus on drops rather than movement (#9896)
Fix setting momentum_scroll to zero not fully disabling momentum scrolling (#9904)
macOS: Fix args passed via open --args being ignored when macos-launch-services-cmdline is present (#9910)
save_as_session: when the filename input by the user has no extension, automatically add the .kitty-session extension (#9919)
Linux: Workaround bug in Nvidia drivers that caused color corruption when resuming after suspend (#9844)
choose-files kitten: Output a trailing newline when writing to a tty in text format (#9982)
ssh kitten: Sanitize user controlled data in error messages that might leak to shell ( CVE 2026-42850)
Linux: Respect the fontconfig matrix setting commonly used for fake slant with fonts that do not have italic variants (#9990)

0.46.2 [2026-03-21]

Watchers: Add an on_quit event to global watchers (#9675)
Wayland: Fix a crash on some compositors when dragging a tab between OS Windows (#9677)
Fix incorrect behavior when using the actions to move tab forward/backward with a tab_bar_filter active (#9672)
Prevent stacking of multiple rename tab windows (#9691)
choose files kitten: Fix a regression that caused incorrect highlight of matched letters
macOS: When using macos_traditional_fullscreen do not render content under the notch (#9678)
X11: Fix massive scroll when switching focus between kitty and another application (#9703)
Markers: Fix marking not working for multicell characters (#9705)
Fix a regression in 0.46 that broke drag select in unfocused windows (#9713)

0.46.1 [2026-03-16]

diff kitten: Highlight moved lines using a different background color (kitten-diff.mark_moved_lines) (#3241)
Fix a regression that broke kitten update-self (#9642)
macOS: Clear bell alert badge on dock icon on mouse/keyboard activity (#9640)
Fix a regression that broke accept anyway shortcut in the paste confirmation dialog (#9640)
Fix kitty hanging on startup on Intel macs (#9643)
X11: Fix a regression that caused some high res scroll devices to be treated as line based scroll devices (#9649)
Wayland: Fix momentum scrolling not working on compositors that send a stop frame with no axis information (#9653)
Linux: Fix regression that broke drag and drop from GTK applications (#9656)
macOS: Fix using Fn key for start dictation not working (#9661)
Don’t use neighboring tab colors for tab bar margins in translucent windows (#9663)
macOS: Fix OS window focus not restored when switching spaces (#9665)

0.46.0 [2026-03-11]

Pixel scrolling for the kitty scrollback buffer controlled via pixel_scroll (#9330)
Linux: momentum scrolling in the kitty scrollback buffer for touchpads and touchscreens, see momentum_scroll
X11: support high resolution scroll events from touchpads, etc
macOS: Implement support for Apple dictation to input text in kitty (#3732)
Allow dragging tabs (opt:drag_threshold) in the tab bar to re-order, move to another OS Window or detach (#9296)
Allow dragging window borders to resize kitty windows in all the different layouts, controlled by window_drag_tolerance (#9447)
Allow showing configurable window titles for individual kitty windows via a window title bar (#9450)
A command palette (ctrl+shift+f3) to browse and trigger all mapped and unmapped actions (#9545)
choose-files kitten: Fix JXL image preview not working (#9323)
Fix tab bar rendering glitches when using tab_bar_filter in some circumstances (#9328)
Add support for specifying colors in kitty.conf in OKLCH and LAB color spaces (#9325)
Fix a regression that broke using line numbers with the edit-in-kitty command (#9346)
Key maps: Allow specifying a timeout for multi key mappings and keyboard modes (#9551)
macOS: Fix changes to macos_titlebar_color while in full screen not being applied after exiting fullscreen (#9350)
ncurses: Fix ncurses not using dim because it is missing from the sgr property in terminfo even though it is present in the dim property.
Fix a regression in the previous release that caused moving between neighbors in the vertical and horizontal layouts to go in the opposite direction (#9355)
Fix goto_session not respecting the focus_tab session directive when creating a session in an existing OS window (#9366)
Wayland: Fix a regression in the previous release that caused doubled key repeats on compositors that implement compositor side key repeat events (#9374)
icat: Fix a regression in the previous release when rendering GIF animations with frames that dispose onto background with non-zero delay using the native engine (#9376)
Wayland: Remove usage of the Wayland color management protocol to inform compositors of the color space used by kitty (#9341)
Linux: Fix a regression in 0.40 that caused horizontal alignment for emoji to be incorrect in some cases (#9395)
icat kitten: When catting multiple images display the images in input order (#9413)
kitten @: Fix relative paths for --password-file being resolved relative to CWD instead of the kitty config directory
kitten choose-files: Add a new binding of Alt+Enter to modify the name of an existing file when choosing a save file name (#9387)
kitten choose-files: Fix TAB completion in the choose save file name prompt not working with respect to the current working directory (#9387)
Fix line-at-once selection not extending wrapped lines into scrollback (#9437)
ssh kitten: Restore keyboard mode even if the ssh connection drops
edit-in-kitty: Handle connection drop more gracefully (#9480)
macOS: Fix changing window title with global menubar menu open causes menu to get stuck (#9490)
Fix focus_follows_mouse not working during a drag and drop (#9497)
goto_session: Add a --active-only option to select from only active sessions (#9503)
Shell integration: Allow sending click events to shells using y co-ordinates relative to prompts (#9500)
A new action copy_selection_or_last_command_output (#9512)
Wayland: Add support for the background blur extension (#9534)
macOS: A new option macos_dock_badge_on_bell to show a badge on the kitty dock icon when a bell occurs (#9529)
macOS: Workaround for yet another Tahoe bug causing rendering to fail (#9520)
URL detection: Allow trailing asterisks in URLs (#9543)
Wayland: Add support for titlebar-only in hide_window_decorations to hide the titlebar while keeping shadows for window resizing. (#9486)
Text sizing protocol: Fix alignment/cropping issues when rendering text with a fractional scale (#9471)
macOS: Fix a crash when using macos_traditional_fullscreen with split view (#9573)
macOS: Fix flickering during OS Window resize (#9582)
Cursor trail: Show a cursor trail when switching tabs (#9588)
Make shift+left click extend the current selection instead of starting a new selection when the mouse is not grabbed by the TUI application (#9608)
Allow double clicking on a tab to rename it (#9609)
remote_control_script resolve relative paths with respect to kitty config directory (#9625)
Splits layout: Add new mappable actions to maximize a window in the splits layout (#9629)

0.45.0 [2025-12-24]

A new kitten to select files at the speed of thought with a keyboard first interface and support for content previews of text files with syntax highlighting, images, videos, e-books and more (#9263)
Add support for the paste events protocol (#9183)
icat kitten: Add support for animated PNG and animated WebP, netPBM images, ICC color profiles and CCIP color space metadata to the builtin engine
icat kitten: Add a new flag kitty +kitten icat --fit to control how images are scaled to fit the screen (#9201)
icat kitten: The kitty +kitten icat --scale-up flag now takes effect when not using kitty +kitten icat --place as well
Add a mappable action copy_last_command_output to copy the output of the last command to the clipboard (#9185)
ssh kitten: Fix a bug where automatic login was not working (#9187)
Graphics: Fix overwrite composition mode for animation frames not being honored
Automatic color scheme switching: Fix title bar and scroll bar colors not being updated (#9167)
macOS: Fix cycle through OS windows only swapping between the two most recent OS Windows. Also add a cycle through OS Windows backwards action. (#9215)
goto_session: allow specifying a directory to select a session file from the directory (#9219)
Have reloading config also reload the custom tab bar python modules (#9221)
kitten @ ls: Also output the neighbors for every window (#9225)
Have the kitty --start-as flag be respected when used with kitty --single-instance (#9228)
When expanding environment variables in listen_on allow the env directive to take effect
macOS: Fix closing an OS Window when another OS Window is minimized causing the minimized window to be un-minimized (#8913)
Do not rewrap the text in the alternate screen buffer. Avoids flicker during live resize with no resize_debounce_time (#9142)
Add a default mapping search_scrollback to open the scrollback in a pager in search mode. If any text is currently selected it is automatically searched for.
Wayland: Fix spurious key repeat events when some user defined callback takes a long time to execute (#9224)
When moving windows to a new tab/OS Window fix overlay windows not being grouped with their parent windows (#9266)
Linux: Fix a bug causing colors to occasionally all go black when using mesa >= 25.3.0 with nouveau GPU driver (#9235)
Fix tab_bar_min_tabs not respecting tab_bar_filter (#9278)
macOS: Workaround for regression in Tahoe 26.2 that breaks kitty --detach (#9288)
macOS: Workaround for yet another Tahoe regression causing macOS to start an AutoFill helper process and not shut it down on application exit (#9299)

0.44.0 [2025-11-03]

Allow kitty to read a specified set of environment variables from your login shell at startup using the env directive in kitty.conf (#9042)
A new option draw_window_borders_for_single_window to force kitty to always draw a window border even when only a single window is present (#9112)
Fix a regression in 0.43.0 that caused a black flicker when closing a tab in the presence of a background image (#9060)
Further improvements to rounded corner rendering, especially at low DPI (#9091)
Splits layout: Fix a bug that could cause a corrupted layout in some circumstances (#9059)
Fix a regression in the previous release that broke goto_session -1
Fix rendering broken on ancient GPU drivers that do not support rendering to 16 bit textures (#9068)
Fix tab bar sometimes showing incorrect tabs when it is filtered to show only tabs from the current session (#9079)
macOS: Workaround for bug in macOS Tahoe that caused OS Windows that are fullscreen to crash kitty when returning from sleep on some machines (#8983)
Graphics: Fix animated images sometimes not auto playing or auto playing at the wrong start frame if the same image id is used for a subsequent image
Fix a regression in 0.43.0 that caused high CPU usage when disable_ligatures was set to cursor and the tab bar was visible (#9071)
macOS: Handle dropping of file promises into kitty in addition to file paths (#9084)
macOS: Fix indeterminate progress bar displayed on dock icon increasing speed when indeterminate progress is set without being cleared first (#9114)
macOS: Performance and power usage improvements of about 5-10% (#9131)
macOS: Add an item to the global menu to Cycle through OS windows
macOS: Quick access terminal: Fix a crash when changing font size (#9178)
Wayland: Fix center-sized panels not working on smithay based compositors (#9117)
Wayland: Fix scrolling using some mouse wheels that produce “VALUE120” based scroll events too fast on some compositors (#9128)
Add support for Unicode 17
Fix a regression in 0.43.0 that caused tab_bar_margin_width to be doubled on the right edge of the tab bar (#9154)
Session files: Add a new focus_tab command to specify which tab should be active when a session is loaded. Accepts either a plain number (0-based index) or a match expression for flexible tab selection, allowing sessions to preserve the active tab state (Sessions)
save_as_session: Add --base-dir option to specify a base directory for saving session files with relative paths, useful when the current working directory is not the desired location (Sessions)
Add state:focused_os_window match query to select all windows in the currently focused OS window (Matching windows and tabs)
Session saving now preserves visual tab order and active tab rather than tab activation history as this is generally more important. In the future may have it save tab history as well (#9163)
The ctrl+shift+delete shortcut to reset the terminal now also resets termios state

0.43.1 [2025-10-01]

ssh kitten: Allow specifying a password and/or TOTP authentication secret to automate interactive logins in scenarios where public key authentication is not supported (#9020)
macOS: Fix a bug where the color of a transparent titlebar was off when running in the release build versus the build from source. Also fix using a transparent titlebar causing the background opacity to be doubled.
Fix a regression in the previous release that caused the incorrect tab to be active when loading a session (#9025)
macOS: Workaround for bug in macOS Tahoe that caused closed OS Windows to remain as invisible rectangles that intercept mouse events (#8952)
macOS: Fix a regression in the previous release that broke automatic switching of dark/light mode when setting macos_titlebar_color to an arbitrary color (#9034)
goto_session: Add --sort-by=alphabetical to have the interactive session picker list the sessions in a fixed order rather than by most recent (#9033)
Fix a regression in the previous release that caused the cursor trail to not be hidden properly (#9039)
Session files: Fix a regression in the previous release that broke matching on windows in the current tab (#9037)
Fix a regression in the previous release that broke clearing screen lines when in margin mode (#9049)

0.43.0 [2025-09-28]

New support for creating and switching to Sessions easily, allowing users to define and use sessions/projects efficiently (#8911)
Add a configurable scrollbar for the kitty scrollback (#8945)
A new protocol for multiple cursors in the terminal (#8927)
macOS: Allow the window title bar to be semi-transparent when background_opacity is less than one and macos_titlebar_color is set to background (#8906)
A new cursor_trail_color setting to independently control the color of cursor trails (#8830)
macOS: Add the default Cmd+L mapping from Terminal.app to erase the last command and its output (#6040)
Fix background_opacity being non-linear especially with light color themes. Note that this might require you to adjust the value of this setting to get back your current look. (#8869)
backward incompatibility: background_opacity no longer applies to background_image instead add an alpha channel to the image itself
Add support for blinking text. Text marked as blinking now blinks in exact rhythm with the cursor. The blinking animation and max duration are controlled by cursor_blink_interval and cursor_stop_blinking_after. (#8551)
Allow using a custom python function to draw tab titles in the tab bar, see tab_title_template
Wayland: Fix incorrect window size calculation when transitioning from full screen to non-full screen with client side decorations (#8826)
macOS: Fix hiding quick access terminal window not restoring focus to previously active application (#8840)
macOS: Fix showing the quick access terminal on a space other than the space it was last active on, after full screening some application causes the quick access terminal to appear on the old space (#8740)
macOS: When toggling open the quick access terminal move it to the currently active monitor (the monitor with the mouse pointer on it) (#9003)
macOS: Fix closing an OS Window when another OS Window is minimized causing the minimized window to be un-minimized (#8913)
Allow using backspace to move the cursor onto the previous line in cooked mode. This is indicated by the bw property in kitty’s terminfo (#8841)
Watchers: A new event for global watchers corresponding to the tab bar being changed (#8842)
Fix a regression in 0.40.0 that broke handling of the VS16 variation selector when it caused a character to flow to the next line (#8848)
Fix rendering of underlines when using larger text sizes with the space and en-space characters (#8950)
Fix updating panel configuration on visibility toggle and via remote control not working (#8984)
Improve rendering of rounded rectangles (#9000)
Wayland: Update bundled copy of libwayland to 1.24 from 1.23.1 because the just released mesa 25.2.0 breaks with libwayland < 1.24 (#8884)
macOS: Pass the Cmd+C shortcut to the application running in the terminal when no text is selected (#8946)
macOS: Workaround for bug in macOS Tahoe that caused OS Windows that are fullscreen on a monitor that is disconnected while macOS is asleep to crash kitty (#8983)

0.42.2 [2025-07-16]

A new protocol extension to notify terminal programs that have turned on SGR Pixel mouse reporting when the mouse leaves the window (#8808)
clipboard kitten: Can now optionally take a password to avoid repeated permission prompts when accessing the clipboard. Based on a protocol extension. (#8789)
A new launch --hold-after-ssh to not close a launched window that connects directly to a remote host because of launch --cwd=current when the connection ends (#8807)
Fix remember_window_position not working because of a stupid typo (#8646)
A new kitty --grab-keyboard that can be used to grab the keyboard so that global shortcuts are sent to kitty instead
Remote control: Fix holding a remote control socket open causing the kitty I/O thread to go into a loop and not respond on other remote control sockets (#8670)
hints kitten: Preserve line breaks when the hint is over a line break (#8674)
Fix a segfault when using the copy_ansi_to_clipboard action (#8682)
Fix a crash when using linear easing curves for animations (#8692)
Graphics protocol: Add a note clarifying image update behavior on re-transmission (#8701)
Wayland GNOME: Fix incorrect OS Window tracking because GNOME has started activating windows on non-current workspaces (#8716)
Fix a regression in 0.40.0 that broke rendering of VS15 variation selectors in some circumstances (#8731, #8794)
Fix a regression in 0.40.0 that broke serialization of tab characters as ANSI text (#8741)
Fix a regression in 0.40.0 that broke erasing of characters in a line in the presence of wide characters (#8758)
Fix a regression in 0.40.0 that broke hyperlinking of wide characters (#8796)
Fix a regression that broke using esc to exit visual select window mode (#8767)
kitten run-shell: Fix SIGINT blocked when execing the shell (#8754)

0.42.1 [2025-05-17]

Fix ambiguous width and private use characters not being rendered when used with variable width text-sizing protocol escape codes
Quick access terminal: Restore focus to previously active window when hiding the quick access terminal window on macOS (#8627)
Wayland: Fix an abort if the terminal program sets a window title longer than 2KB that contains CSI escape sequences and multibyte UTF-8 (#8619)
Quick access terminal: Allow toggling the window to full screen using the standard kitty ctrl+shift+f11 shortcut (#8626)
Quick access terminal: Allow configuring the monitor to display the panel on in Wayland/X11 (#8630)
A new setting remember_window_position to optionally use the position of the last closed kitty OS Window as the position of the first kitty OS Window when running a new kitty instance (#8601)
Panel kitten: A new center-sized value for --edge to allow easily creating sized and centered panels
Wayland: The kitty --name flag now sets the XDG window tag on compositors that support the xdg-toplevel-tag protocol.

0.42.0 [2025-05-11]

A new kitten: quick-access-terminal to Make a Quake like quick access terminal
The panel kitten works on macOS and X11 as well as Wayland (#2590)
Behavior change: Now kitty does full grapheme segmentation following the Unicode 16 spec when splitting text into cells (#8533)
Behavior change: The automatic color switching functionality now also controls background image settings (#8603)
panel kitten: Allow using kitty +kitten panel --single-instance to create multiple panels in one process (#8549)
launch: Allow creating desktop panels such as those created by the panel kitten (#8549)
Remote control: Allow modifying desktop panels and showing/hiding OS Windows using the kitten @ resize-os-window command (#8550)
Remote control launch: Allow waiting for a program launched in a new window to exit and get the exit code via the kitty +launch --wait-for-child-to-exit command line flag (#8573)
Allow starting kitty with the OS window hidden via kitty --start-as=hidden, useful for single instance mode (#3466)
Allow configuring the mouse unhide behavior when using mouse_hide_wait (#8508)
diff kitten: Add half page and full page scroll vim-like bindings (#8514)
diff kitten: Allow diffing named pipes (#8597)
Fix a regression that caused automatic color themes to not be re-applied after config file reload (#8530)
Wayland: When the compositor supports the xdg-system-bell protocol use it to play the default bell sound
panel kitten: Allow specifying panel size in pixels in addition to cells
Fix a regression in 0.36.0 that caused using = with single letter command line flags to no longer work correctly (#8556)
Single instance: Preserve environment variables from invoking environment in newly created window (#8567)
Single instance: Reset OS Window class and name in new single instance OS windows (#8567)
macOS: Fix text color in visual window select ignoring the color theme (#8579)
Launch action: Allow using an env var that resolves to a full command-line as the program to launch (#8613)
change_font_size allow multiplying/dividing the current font size in addition to incrementing it (#8616)
Box drawing: Improve appearance of rounder corners, giving them a uniform line width (#8299)

0.41.1 [2025-04-03]

Fix a regression in the previous release that caused rendering of emoji using the VS16 variation selector to fail with some fonts (#8495)
Fix a regression in 0.40.0 that caused tab bar margins to not be properly blanked when the tab bar is at the bottom (#8494)
Wayland: panel kitten: Fix incorrect initial font size on compositors such as Hyprland that set scale late in the window creation process (#8496)
Fix a regression in 0.40.1 that caused hyperlink underline on hover to remain on screen when the screen is scrolled

0.41.0 [2025-03-29]

A new mode of operation for text_fg_override_threshold to override foreground colors so as to maintain a minimum contrast between foreground and background text colors. Works in a perceptual color space for best color accuracy (#8420)
A 15% improvement in throughput when processing text thanks to using a multi-stage table for Unicode property lookups
kitty +open: Ask for confirmation by default when running executables to work around some badly designed programs that try to open links in documents that point to executable files. Can be overridden by specifying your own launch-actions.conf.
Fix a regression in version 0.40.0 causing a crash when the underline thickness of the font is zero (#8443)
Fix a regression in version 0.40.0 causing a hang on resizing with a wide character at the right edge of a line that needs to be moved onto the next line (#8464)
Fix a regression in 0.40.1 that caused copying to clipboard via OSC 52 from applications that don’t specify a destination in the escape code not working (#8459)
Wayland: Fix a regression in the previous release that caused crashes on compositors that don’t support the xdg-toplevel-icon protocol and the user has set a custom kitty icon (#8471)

0.40.1 [2025-03-18]

Do not count background processes by default for confirm_os_window_close (#8358)
A new option clear_selection_on_clipboard_loss to clear selections when they no longer reflect the contents of the clipboard
Fix a regression in the previous release that caused empty lines to be skipped when copying text from a selection (#8435)
Fix flickering of hyperlink underline when client program continuously redraws on mouse movement (#8414)
Wayland: Allow overriding the kitty OS Window icon on compositors that implement the xdg-toplevel-icon protocol
macOS: When the program running in kitty reports progress information for a task, show a progress bar on the kitty dock icon
macOS: Fix a regression causing a crash when using focus_follows_mouse (#8437)
OSC 52: Fix specifying both clipboard and primary in OSC 52 requests not supported

0.40.0 [2025-03-08]

Allow terminal programs to use text in different font sizes (#8226)
When rendering underlines add gaps around text descenders (parts of the text that overlap with the underline). Controlled by the new option underline_exclusion (#8226)
Finally fix the issue of text-width mismatches that has been plaguing the terminal ecosystem for decades by allowing terminal programs to specify how many cells to render a piece of text in (#8226)
Behavior change: The notify_on_cmd_finish option now uses OS Window visibility instead of focus state when set to invisible on platforms that support querying OS window visibility (#8320)
launch: Add options launch --source-window and launch --next-to to allow specifying which window is used as the data source and destination location independently of the currently active window (#8295)
Linux: Add support for COLRv1 fonts. These are typically emoji fonts that use vector images for emoji
Add support for the octant box-drawing characters
Speed up rendering of box drawing characters by moving the implementation to native code
When confirming if a window should be closed consider it active if it has running background processes (#8358)
Remote control: kitten @ scroll-window: Allow scrolling to previous/next prompt
macOS: Fix fallback font rendering for bold/italic text not working for some symbols that are present in the Menlo regular face but not the bold/italic faces (#8282)
XTGETTCAP: Fix response invalid for empty string capabilities (#8304)
ssh kitten: Fix incorrect copying of data files when using the python interpreter and also fix incorrect hard link detection (#8308)
Fix a regression in the previous release that broke setting of nullable colors
Fix a regression in 0.39.0 that caused a crash on invalid Unicode with a large number of combining characters in a single cell (#8318)
Fix --hold always restoring cursor to block shape instead of respecting the value of cursor_shape (#8344)
When dragging in rectangle select mode use a crosshair mouse cursor configurable via pointer_shape_when_dragging
macOS: notify kitten: Fix waiting for result from desktop notification not working (#8379)
Wayland: Fix mouse pointer position update not being sent when focus regained (:iss`8397`, #8398)
Fix cursor blink animation when background_opacity is less than one (#8401)
Wayland: panel kitten: Add a center mode for creating panels to ease creation of centered popups in Wayland (#8411)

0.39.1 [2025-02-01]

Splits layout: Allow setting the bias of the current split using layout_action bias (#8222)
hints kitten: Workaround for some broken light color themes that make the hints text color too low contrast to read (#7330)
Wayland niri: Fix 250ms delay on startup when using scale 1 (#8236)
Watchers: Add a new event on_color_scheme_preference_change (#8246)

0.39.0 [2025-01-16]

diff kitten: Automatically use dark/light color scheme based on the color scheme of the parent terminal. Can be controlled via the new kitten-diff.color_scheme option. Note that this is a default behavior change (#8170)
Allow dynamically generating configuration by running an arbitrary program using the new geninclude directive in kitty.conf
When a program running in kitty reports progress of a task display it as a percentage in the tab title. Controlled by the tab_title_template option
When mapping a custom kitten allow using shell escaping for the kitten path (#8178)
Fix border colors not being changed by auto light/dark themes at startup (#8180)
ssh kitten: Fix kitten not being on PATH when SSHing into Debian systems (#7160)
diff kitten: Abort when run inside a terminal that does not support the kitty keyboard protocol (#8185)
query kitten: Add support for reporting name of the OS the terminal emulator is running on (#8201)
macOS: Allow using the Passwords app to autofill passwords via the Edit->Autofill menu mimicking other macOS applications (#8195)
macOS: Add menu items to the Edit menu to clear the screen and scrollback
Fix the clear_terminal scrollback action also clearing screen, not just the scrollback
When reloading configuration fix auto color themes not being re-applied (#8203)

0.38.1 [2024-12-26]

macOS: Fix a regression in the previous release that broke rendering of Emoji using the VS16 variation selector (#8130)
When automatically changing colors based on OS color preference, first reset all colors to default before applying the new theme so that even colors not specified in the theme are correct (#8124)
Graphics: Fix deleted but not freed images without any placements being incorrectly freed on a subsequent delete command (#8129)
Graphics: Fix deletion of images by id not working for images with no placements (#8129)
Add support for escape code protocol for notifying applications on dark/light color scheme change
Cursor trails: Fix pure vertical movement sometimes not triggering a trail and holding down a key in nvim causing the trail to be glitchy (#8152, #8153)
macOS: Fix mouse cursor shape not always being reset to text cursor when mouse re-enters kitty (#8155)
clone-in-kitty: Fix KITTY_WINDOW_ID being cloned and thus having incorrect value (#8161)

0.38.0 [2024-12-15]

Allow specifying individual color themes to use so that kitty changes colors automatically following the OS dark/light mode
notify_on_cmd_finish: Automatically remove notifications when the window gains focus or the next notification is shown. Clearing behavior can be configured (#8100)
Discard OSC 9 notifications that start with 4; because some misguided software is using it for “progress reporting” (#8011)
Wayland GNOME: Workaround bug in mutter causing double tap on titlebar to not always work (#8054)
clipboard kitten: Fix a bug causing kitten to hang in filter mode when input data size is not divisible by 3 and larger than 8KB (#8059)
Wayland: Fix an abort when a client program tries to set an invalid title containing interleaved escape codes and UTF-8 multi-byte characters (#8067)
Graphics protocol: Fix delete by number not deleting newest image with the specified number (#8071)
Fix dashed and dotted underlines not being drawn at the same y position as straight underlines at all font sizes (#8074)
panel kitten: Allow creating floating and on-top panels with arbitrary placement and size on Wayland (#8068)
remote_control_password: Fix using a password without any actions not working (#8082)
Fix enlarging window when a long line is wrapped between the first line of the scrollback buffer and the screen inserting a spurious newline (#7033)
When re-attaching a detached tab preserve internal layout state such as biases and orientations (#8106)
hints/unicode_input kittens: Do not lose keypresses that are sent very rapidly via an automation tool immediately after the kitten is launched (#7089)

0.37.0 [2024-10-30]

A new optional text cursor movement animation that shows a “trail” following the movement of the cursor making it easy to follow large cursor jumps (#7970)
Custom kittens: Add a framework for easily and securely using remote control from within a kitten’s main() function
kitten icat: Fix the kitty +kitten icat --no-trailing-newline not working when using unicode placeholders (#7948)
tab_title_template allow using the 256 terminal colors for formatting (#7976)
Fix resizing window when alternate screen is active does not preserve trailing blank output line in the main screen (#7978)
Wayland: Fix background_opacity less than one causing flicker on startup when the Wayland compositor supports single pixel buffers (#7987)
Fix background image flashing when closing a tab (#7999)
When running a kitten that modifies the kitty config file if no config file exists create a commented out default config file and then modify it (#7991)

0.36.4 [2024-09-27]

Fix a regression in the previous release that caused window padding to be rendered opaque even when background_opacity is less than 1 (#7895)
Wayland GNOME: Fix a crash when using multiple monitors with different scales and starting on or moving to the monitor with lower scale (#7894)
macOS: Fix a regression in the previous release that caused junk to be rendered in font previews in the choose fonts kitten and crash on Intel macs (#7892)

0.36.3 [2024-09-25]

The option second_transparent_bg has been removed and replaced by transparent_background_colors which allows setting up to seven additional colors that will be transparent, with individual opacities per color (#7646)
Fix a regression in the previous release that broke use of the cd command in session files (#7829)
macOS: Fix shortcuts that become entries in the global menubar being reported as removed shortcuts in the debug output
macOS: Fix macos_option_as_alt not working when caps lock is engaged (#7836)
Fix a regression when tinting of background images was introduced that caused window borders to have background_opacity applied to them (#7850)
Fix a regression that broke writing to the clipboard using the OSC 5522 protocol (#7858)
macOS: Fix a regression in the previous release that caused kitty to fail to run after an unclean shutdown/crash when using --single-instance (#7846)
kitten @ ls: Fix the --self flag not working (#7864)
Remote control: Fix --match state:self not working (#7886)
Splits layout: Allow setting the split_axis option to auto so that all new windows have their split axis chosen automatically unless explicitly specified in the launch command (#7887)

0.36.2 [2024-09-06]

Linux: Fix a regression in 0.36.0 that caused font features defined via fontconfig to be ignored (#7773)
goto_tab: Allow numbers less than -1 to go to the Nth previously active tab
Wayland: Fix for upcoming explicit sync changes in Wayland compositors breaking kitty (#7767)
Remote control: When listening on a UNIX domain socket only allow connections from processes having the same user id (#7777)
kitten @: Fix a regression connecting to TCP sockets using plain IP addresses rather than hostnames (#7794)
diff kitten: Fix a regression that broke diffing against remote files (#7797)

0.36.1 [2024-08-24]

Allow specifying that the cursor shape for unfocused windows should remain unchanged (#7728)
MacOS Intel: Fix a crash in the choose-fonts kitten when displaying previews of variable fonts (#7734)
Remote control: Fix a regression causing an escape code to leak when using @ launch with --no-response over the TTY (#7752)
OSC 52: Fix a regression in the previous release that broke handling of invalid base64 encoded data in OSC 52 requests (#7757)
macOS: Fix a regression in the previous release that caused kitty --single-instance to not work when using macos-launch-services-cmdline

0.36.0 [2024-08-17]

Support OpenType Variable fonts (#3711)
A new choose-fonts kitten that provides a UI with font previews to ease selection of fonts. Also has support for font features and variable fonts
Allow animating the blinking of the cursor. See cursor_blink_interval for how to configure it
Add NERD fonts builtin so that users don’t have to install them to use NERD symbols in kitty. The builtin font is used only if the symbols are not available in some system font
launch command: A new launch --bias option to adjust the size of newly created windows declaratively (#7634)
A new option transparent_background_colors to make a second background color semi-transparent via background_opacity. Useful for things like cursor line highlight in editors (#7646)
A new notify kitten to show desktop notifications from the command line with support for icons, buttons and more.
Desktop notifications protocol: Add support for icons, buttons, closing of notifications, expiry of notifications, updating of notifications and querying if the terminal emulator supports the protocol (#7657, #7658, #7659)
A new option filter_notification to filter out or perform arbitrary actions on desktop notifications based on sophisticated criteria (#7670)
A new protocol to allow terminal applications to change colors in the terminal more robustly than with the legacy XTerm protocol (Setting and querying colors)
Sessions: A new command focus_matching_window to shift focus to a specific window, useful when creating complex layouts with splits (#7635)
Speed up loading of large background images by caching the decoded image data. Also allow using images in JPEG/WEBP/TIFF/GIF/BMP formats in addition to PNG
Wayland: Allow fractional scales less than one (#7549)
Wayland: Fix specifying the output name for the panel kitten not working (#7573)
icat kitten: Add an option kitty +kitten icat --no-trailing-newline to leave the cursor to the right of the image (#7574)
Speed up kitty --version and kitty --single-instance (for all subsequent instances). They are now the fastest of all terminal emulators with similar functionality
macOS: Fix rendering of the unicode hyphen (U+2010) character when using a font that does not include a glyph for it (#7525)
macOS 15: Handle Fn modifier when detecting global shortcuts (#7582)
Dispatch any clicks waiting for click_interval on key events (#7601)
kitten run-shell: Automatically add the directory containing the kitten binary to PATH if needed. Controlled via the --inject-self-onto-path option (disc:7668`)
Wayland: Fix an issue with mouse selections not being stopped when there are multiple OS windows (#7381)
Splits layout: Fix the move_to_screen_edge action breaking when only a single window is present (#7621)
Add support for in-band window resize notifications (#7642)
Allow controlling the easing curves used for visual_bell_duration
New special rendering for font symbols useful in drawing commit graphs (#7681)
diff kitten: Add bindings to jump to next and previous file (#7683)
Wayland GNOME: Fix the font size in the OS Window title bar changing with the size of the text in the window (#7677)
Wayland GNOME: Fix a small rendering artifact when docking a window at a screen edge or maximizing it (#7701)
When shell is set to . respect the SHELL environment variable in the environment in which kitty is launched (#7714)
macOS: Bump the minimum required macOS version to Catalina released five years ago.
Fix a regression in notify_on_cmd_finish that caused notifications to appear for every command after the first (#7725)

0.35.2 [2024-06-22]

A new option, window_logo_scale to specify how window logos are scaled with respect to the size of the window containing the logo (#7534)
A new option, cursor_shape_unfocused to specify the shape of the text cursor in unfocused OS windows (#7544)
Remote control: Fix empty password not working (#7538)
Wayland: Fix regression in 0.34.0 causing flickering on window resize on NVIDIA drivers (#7493)
Wayland labwc: Fix kitty timing out waiting for compositor to quit fucking around with scales on labwc (#7540)
Fix scrollback_indicator_opacity not actually controlling the opacity (#7557)
URL detection: Fix IPv6 hostnames breaking URL detection (#7565)

0.35.1 [2024-05-31]

Wayland: Fix a regression in 0.34 that caused the tab bar to not render in second and subsequent OS Windows under Hyprland (#7413)
Fix a regression in the previous release that caused horizontal scrolling via touchpad in fullscreen applications to be reversed on non-Wayland platforms (#7475, #7481)
Fix a regression in the previous release causing an error when setting background_opacity to zero (#7483)
Image display: Fix cursor movement and image hit region incorrect for image placements that specify only a number of rows or columns to display in (#7479)

0.35.0 [2024-05-25]

kitten @ run: A new remote control command to run a process on the machine kitty is running on and get its output (#7429)
notify_on_cmd_finish: Show the actual command that was finished (#7420)
hints kitten: Allow clicking on matched text to select it in addition to typing the hint
Shell integration: Make the currently executing cmdline available as a window variable in kitty
paste_actions: Fix replace-newline not working with confirm (#7374)
Graphics: Fix aspect ratio of images not being preserved when only a single dimension of the destination rectangle is specified (#7380)
focus_visible_window: Fix selecting with mouse click leaving keyboard in unusable state (#7390)
Wayland: Fix infinite loop causing bad performance when using IME via fcitx5 due to a change in fcitx5 (#7396)
Desktop notifications protocol: Add support for specifying urgency
Improve rendering of Unicode shade character to avoid Moire patterns (#7401)
kitten @ send-key: Fix some keys being sent in kitty keyboard protocol encoding when not using socket for remote control
Dont clear selections on erase in screen commands unless the erased region intersects a selection (#7408)
Wayland: save energy by not rendering “suspended” windows on compositors that support that
Allow more types of alignment for placement_strategy (#7419)
Add some more box-drawing characters from the “Geometric shapes” Unicode block (#7433)
Linux: Run all child processes in their own systemd scope to prevent the OOM killer from harvesting kitty when a child process misbehaves (#7427)
Mouse reporting: Fix horizontal scroll events inverted (#7439)
Remote control: @ action: Fix some actions being performed on the active window instead of the matched window (#7438)
Scrolling with mouse wheel when a selection is active should update the selection (#7453)
Fix kitten @ set-background-opacity limited to min opacity of 0.1 instead of 0 (#7463)
launch --hold: Fix hold not working if kernel signals process group with SIGINT (#7466)
macOS: Fix --start-as=fullscreen not working when another window is already fullscreen (#7448)
Add option kitten @ detach-window --stay-in-tab to keep focus in the currently active tab when moving windows (#7468)
macOS: Fix changing window chrome/colors while in traditional fullscreen causing the titlebar to become visible (#7469)

0.34.1 [2024-04-19]

Wayland KDE: Fix window background blur not adapting when window is grown. Also fix turning it on and off not working. (#7351)
Wayland GNOME: Draw the titlebar buttons without using a font (#7349)
Fix a regression in the previous release that caused incorrect font selection when using variable fonts on Linux (#7361)

0.34.0 [2024-04-15]

Wayland: panel kitten: Add support for drawing desktop background and bars using the panel kitten for all compositors that support the requisite Wayland protocol which is practically speaking all of them but GNOME (#2590)
Show a small scrollback indicator along the right window edge when viewing the scrollback to keep track of scroll position (#2502)
Wayland: Support fractional scales so that there is no wasted drawing at larger scale followed by resizing in the compositor
Wayland KDE: Support background_blur
Wayland GNOME: The window titlebar now has buttons to minimize/maximize/close the window
Wayland GNOME: The window titlebar color now follows the system light/dark color scheme preference, see wayland_titlebar_color
Wayland KDE: Fix mouse cursor hiding not working in Plasma 6 (#7265)
Wayland IME: Fix a bug with handling synthetic keypresses generated by ZMK keyboard + fcitx (#7283)
A new option terminfo_type to allow passing the terminfo database embedded into the TERMINFO env var directly instead of via a file
Mouse reporting: Fix drag release event outside the window not being reported in legacy mouse reporting modes (#7244)
macOS: Fix a regression in the previous release that broke rendering of some symbols on some systems (#7249)
Fix handling of tab character when cursor is at end of line and wrapping is enabled (#7250)
Splits layout: Fix move_window_forward not working (#7264)
macOS: Fix an abort due to an assertion when a program tries to set an invalid window title (#7271)
fish shell integration: Fix clicking at the prompt causing autosuggestions to be accepted, needs fish >= 3.8.0 (#7168)
Linux: Fix for a regression in 0.32.0 that caused some CJK fonts to not render glyphs (#7263)
Wayland: Support preferred integer scales
Wayland: A new option wayland_enable_ime to turn off Input Method Extensions which add latency and create bugs
Wayland: Fix hide_window_decorations not working on non GNOME desktops
When asking for quit confirmation because of a running program, mention the program name (#7331)
Fix flickering of prompt during window resize (#7324)

0.33.1 [2024-03-21]

Fix a regression in the previous release that caused requesting data from the clipboard via OSC 52 to instead return data from the primary selection (#7213)
Splits layout: Allow resizing until one of the halves in a split is minimally sized (#7220)
macOS: Fix text rendered with fallback fonts not respecting bold/italic styling (#7241)
macOS: When CoreText fails to find a fallback font for a character in the first Private Use Unicode Area, preferentially use the NERD font, if available, for it (#6043)

0.33.0 [2024-03-12]

Cheetah speed with a redesigned render loop and a 2x faster escape code parser that uses SIMD CPU vector instruction to parse data in parallel (#7005)
A new benchmark kitten (kitten __benchmark__) to measure terminal throughput performance
Graphics protocol: Add a new delete mode for deleting images whose ids fall within a range. Useful for bulk deletion (#7080)
Keyboard protocol: Fix the Enter, Tab and Backspace keys generating spurious release events even when report all keys as escape codes is not set (#7136)
macOS: The command line args from macos-launch-services-cmdline are now prefixed to any args from open --args rather than overwriting them (#7135)
Allow specifying where the new tab is created for detach_window (#7134)
hints kitten: The option to set the text color for hints now allows arbitrary colors (#7150)
icat kitten: Add a command line argument to override terminal window size detection (#7165)
A new action toggle_tab to easily switch to and back from a tab with a single shortcut (#7203)
When clearing terminal add a new type to_cursor_scroll which can be used to clear to prompt while moving cleared lines into the scrollback
Fix a performance bottleneck when dealing with thousands of small images (#7080)
kitten @ ls: Return the timestamp at which the window was created (#7178)
hints kitten: Use default editor rather than hardcoding vim to open file at specific line (#7186)
Remote control: Fix --match argument not working for @ls, @send-key, @set-background-image (#7192)
Keyboard protocol: Do not deliver a fake key release events on OS window focus out for engaged modifiers (#7196)
Ignore startup_session when kitty is invoked with command line options specifying a command to run (#7198)
Box drawing: Specialize rendering for the Fira Code progress bar/spinner glyphs

0.32.2 [2024-02-12]

kitten @ load-config: Allow (re)loading kitty.conf via remote control
Remote control: Allow running mappable actions via remote control (kitten @ action)
kitten @ send-text: Add a new option to automatically wrap the sent text in bracketed paste escape codes if the program in the destination window has turned on bracketed paste.
Fix a single key mapping not overriding a previously defined multi-key mapping
macOS: Fix kitten @ select-window leaving the keyboard in a partially functional state (#7074)
Graphics protocol: Improve display of images using Unicode placeholders or row/column boxes by resizing them using linear instead of nearest neighbor interpolation on the GPU (#7070)
When matching URLs use the definition of legal characters in URLs from the WHATWG spec rather than older standards (#7095)
hints kitten: Respect the kitty url_excluded_characters option (#7075)
macOS: Fix an abort when changing OS window chrome for a full screen window via remote control or the themes kitten (#7106)
Special case rendering of some more box drawing characters using shades from the block of symbols for legacy computing (#7110)
A new action close_other_os_windows to close non active OS windows (#7113)

0.32.1 [2024-01-26]

macOS: Fix a regression in the previous release that broke overriding keyboard shortcuts for actions present in the global menu bar (#7016)
Fix a regression in the previous release that caused multi-key sequences to not abort when pressing an unknown key (#7022)
Fix a regression in the previous release that caused kitten @ launch --cwd=current to fail over SSH (#7028)
Fix a regression in the previous release that caused kitten @ send-text with a match tab parameter to send text twice to the active window (#7027)
Fix a regression in the previous release that caused overriding of existing multi-key mappings to fail (#7044, #7058)
Wayland+NVIDIA: Do not request an sRGB output buffer as a bug in Wayland causes kitty to not start (#7021)

0.32.0 [2024-01-19]

Configuring a timeout
Support for Modal mappings such as in modal editors like vim
A new option notify_on_cmd_finish to show a desktop notification when a long running command finishes (#6817)
A new action send_key to simplify mapping key presses to other keys without needing send_text
Allow focusing previously active OS windows via nth_os_window (#7009)
Wayland: Fix a regression in the previous release that broke copying to clipboard under wl-roots based compositors in some circumstances (#6890)
macOS: Fix some combining characters not being rendered (#6898)
macOS: Fix returning from full screen via the button when the titlebar is hidden not hiding the buttons (#6883)
macOS: Fix newly created OS windows not always appearing on the “active” monitor (#6932)
Font fallback: Fix the font used to render a character sometimes dependent on the order in which characters appear on screen (#6865)
panel kitten: Fix rendering with non-zero margin/padding in kitty.conf (#6923)
kitty keyboard protocol: Specify the behavior of the modifier bits during modifier key events (#6913)
Wayland: Enable support for the new cursor-shape protocol so that the mouse cursor is always rendered at the correct size in compositors that support this protocol (#6914)
GNOME Wayland: Fix remembered window size smaller than actual size (#6946)
Mouse reporting: Fix incorrect position reported for windows with padding (#6950)
Fix focus_visible_window not switching to other window in stack layout when only two windows are present (#6970)

0.31.0 [2023-11-08]

Allow easily running arbitrarily complex remote control scripts without needing to turn on remote control (#6712)
A new option menu_map that allows adding entries to the global menubar on macOS (#6680)
A new escape code that can be used by programs running in the terminal to change the shape of the mouse pointer (#6711)
Graphics protocol: Support for positioning images relative to other images (#6400)
A new option single_window_padding_width to use a different padding when only a single window is visible (#6734)
A new mouse action mouse_selection word_and_line_from_point to select the current word under the mouse cursor and extend to end of line (#6663)
A new option underline_hyperlinks to control when hyperlinks are underlined (#6766)
Allow using the full range of standard mouse cursor shapes when customizing the mouse cursor
macOS: When running the default shell with the login program fix ~/.hushlogin not being respected when opening windows not in the home directory (#6689)
macOS: Fix poor performance when using ligatures with some fonts, caused by slow harfbuzz shaping (#6743)
kitten @ set-background-opacity --toggle - a new flag to easily switch opacity between the specified value and the default (#6691)
Fix a regression caused by rewrite of kittens to Go that made various kittens reset colors in a terminal when the colors were changed by escape code (#6708)
Fix trailing bracket not ignored when detecting a multi-line URL with the trailing bracket as the first character on the last line (#6710)
Fix the kitten @ launch --copy-env option not copying current environment variables (#6724)
Fix a regression that broke kitten update-self (#6729)
Two new event types for watchers, on_title_change and on_set_user_var
When pasting, if the text contains terminal control codes ask the user for permission. See paste_actions for details. Thanks to David Leadbeater for discovering this.
Render Private Use Unicode symbols using two cells if the second cell contains an en-space as well as a normal space
macOS: Fix a regression in the previous release that caused kitten @ ls to not report the environment variables for the default shell (#6749)
Desktop notification protocol: Allow applications sending notifications to specify that the notification should only be displayed if the window is currently unfocused (#6755)
unicode_input kitten: Fix a regression that broke the “Emoticons” tab (#6760)
Shell integration: Fix sudo --edit not working and also fix completions for sudo not working in zsh (#6754, #6771)
A new action set_window_title to interactively change the title of the active window
ssh kitten: Fix a regression that broken ctrl+space mapping in zsh (#6780)
Wayland: Fix primary selections not working with the river compositor (#6785)

0.30.1 [2023-10-05]

Shell integration: Automatically alias sudo to make the kitty terminfo files available in the sudo environment. Can be turned off via shell_integration
ssh kitten: Fix a regression in 0.28.0 that caused using --kitten to override ssh.conf not inheriting settings from ssh.conf (#6639)
themes kitten: Allow absolute paths for --config-file-name (#6638)
Expand environment variables in the shell option (#6511)
macOS: When running the default shell, run it via the login program so that calls to getlogin() work (#6511)
X11: Fix a crash on startup when the ibus service returns errors and the GLFW_IM_MODULE env var is set to ibus (#6650)

0.30.0 [2023-09-18]

A new transfer kitten that can be used to transfer files efficiently over the TTY device
ssh kitten: A new configuration directive to automatically forward the kitty remote control socket
Allow easily building kitty from source needing the installation of only C and Go compilers. All other dependencies are automatically vendored
kitten @ set-user-vars: New remote control command to set user variables on a window (#6502)
kitten @ ls: Add user variables set on windows to the output (#6502)
kitten @ ls: Allow limiting output to matched windows/tabs (#6520)
kitten icat: Fix image being displayed one cell to the right when using both --place and --unicode-placeholder (#6556)
kitten run-shell: Make kitty terminfo database available if needed before starting the shell
macOS: Fix keyboard shortcuts in the Apple global menubar not being changed when reloading the config
Fix a crash when resizing an OS Window that is displaying more than one image and the new size is smaller than the image needs (#6555)
Remote control: Allow using a random TCP port as the remote control socket and also allow using TCP sockets in listen_on
unicode_input kitten: Add an option to specify the startup tab (#6552)
X11: Print an error to STDERR instead of refusing to start when the user sets a custom window icon larger than 128x128 (#6507)
Remote control: Allow matching by neighbor of active window. Useful for navigation plugins like vim-kitty-navigator
Fix a regression that caused changing text_fg_override_threshold or text_composition_strategy via config reload causing incorrect rendering (#6559)
When running a shell for --hold set the env variable KITTY_HOLD=1 to allow users to customize what happens (#6587)
When multiple confirmable close requests are made focus the existing close confirmation window instead of opening a new one for each request (#6601)
Config file format: allow splitting lines by starting subsequent lines with a backslash (#6603)
ssh kitten: Fix a regression causing hostname directives in ssh.conf not matching when username is specified (#6609)
diff kitten: Add support for files that are identical apart from mode changes (#6611)
Wayland: Do not request idle inhibition for full screen windows (#6613)
Adjust the workaround for non-linear blending of transparent pixels in compositors to hopefully further reduce fringing around text with certain color issues (#6534)

0.29.2 [2023-07-27]

macOS: Fix a performance regression on M1 machines using outdated macOS versions (#6479)
macOS: Disable OS window shadows for transparent windows as they cause rendering artifacts due to Cocoa bugs (#6439)
Detect .tex and Makefiles as plain text files (#6492)
unicode_input kitten: Fix scrolling over multiple screens not working (#6497)

0.29.1 [2023-07-17]

A new value for background_image_layout to scale the background image while preserving its aspect ratio. Also have centered images work even for images larger than the window size (#6458)
Fix a regression that caused using unicode placeholders to display images to break and also partially offscreen images to sometimes be slightly distorted (#6467)
macOS: Fix a regression that caused rendering to hang when transitioning to full screen with macos_colorspace set to default (#6435)
macOS: Fix a regression causing burn-in of text when resizing semi-transparent OS windows (#6439)
macOS: Add a new value titlebar-and-corners for hide_window_decorations that emulates the behavior of hide_window_decorations yes in older versions of kitty
macOS: Fix a regression in the previous release that caused hide_window_decorations = yes to prevent window from being resizable (#6436)
macOS: Fix a regression that caused the titlebar to be translucent even for non-translucent windows (#6450)
GNOME: Fix wayland_titlebar_color not being applied until the color is changed at least once (#6447)
Remote control launch: Fix --env not implemented when using --cwd=current with the SSH kitten (#6438)
Allow using a custom OS window icon on X11 as well as macOS (#6475)

0.29.0 [2023-07-10]

A new escape code <ESC>[22J that moves the current contents of the screen into the scrollback before clearing it
A new kitten run-shell to allow creating sub-shells with shell integration enabled
A new option background_blur to blur the background for transparent windows (#6135)
The --hold flag now holds the window open at a shell prompt instead of asking the user to press a key
A new option text_fg_override_threshold to force text colors to have high contrast regardless of color scheme (#6283)
When resizing OS Windows make the animation less jerky. Also show the window size in cells during the resize (#6341)
unicode_input kitten: Fix a regression in 0.28.0 that caused the order of recent and favorites entries to not be respected (#6214)
unicode_input kitten: Fix a regression in 0.28.0 that caused editing of favorites to sometimes hang
clipboard kitten: Fix a bug causing the last MIME type available on the clipboard not being recognized when pasting
clipboard kitten: Dont set clipboard when getting clipboard in filter mode (#6302)
Fix regression in 0.28.0 causing color fringing when rendering in transparent windows on light backgrounds (#6209)
show_key kitten: In kitty mode show the actual bytes sent by the terminal rather than a re-encoding of the parsed key event
hints kitten: Fix a regression in 0.28.0 that broke using sub-groups in regexp captures (#6228)
hints kitten: Fix a regression in 0.28.0 that broke using lookahead/lookbehind in regexp captures (#6265)
diff kitten: Fix a regression in 0.28.0 that broke using relative paths as arguments to the kitten (#6325)
Fix re-using the image id of an animated image for a still image causing a crash (#6244)
kitty +open: Ask for permission before executing script files that are not marked as executable. This prevents accidental execution of script files via MIME type association from programs that unconditionally “open” attachments/downloaded files
edit-in-kitty: Fix running edit-in-kitty with elevated privileges to edit a restricted file not working (#6245)
ssh kitten: Fix a regression in 0.28.0 that caused interrupt during setup to not be handled gracefully (#6254)
ssh kitten: Allow configuring the ssh kitten to skip some hosts via a new delegate config directive
Graphics: Move images up along with text when the window is shrunk vertically (#6278)
Fix a regression in 0.28.0 that caused a buffer overflow when clearing the screen (#6306, #6308)
Fix a regression in 0.27.0 that broke setting of specific edge padding/margin via remote control (#6333)
macOS: Fix window shadows not being drawn for transparent windows (#2827, #6416)
Do not echo invalid DECRQSS queries back, behavior inherited from xterm (CVE-2008-2383). Similarly, fix an echo bug in the file transfer protocol due to insufficient sanitization of safe strings.

0.28.1 [2023-04-21]

Fix a regression in the previous release that broke the remote file kitten (#6186)
Fix a regression in the previous release that broke handling of some keyboard shortcuts in some kittens on some keyboard layouts (#6189)
Fix a regression in the previous release that broke usage of custom themes (#6191)

0.28.0 [2023-04-15]

Text rendering change: Use sRGB correct linear gamma blending for nicer font rendering and better color accuracy with transparent windows. See the option text_composition_strategy for details. The obsolete macos_thicken_font will make the font too thick and needs to be removed manually if it is configured. (#5969)
icat kitten: Support display of images inside tmux >= 3.3 (#5664)
Graphics protocol: Add support for displaying images inside programs that do not support the protocol such as vim and tmux (#5664)
diff kitten: Add support for selecting multi-line text with the mouse
Fix a regression in 0.27.0 that broke kitty @ set-font-size 0 (#5992)
launch: When using --cwd=current for a remote system support running non shell commands as well (#5987)
When changing the cursor color via escape codes or remote control to a fixed color, do not reset cursor_text_color (#5994)
Input Method Extensions: Fix incorrect rendering of IME in-progress and committed text in some situations (#6049, #6087)
Linux: Reduce minimum required OpenGL version from 3.3 to 3.1 + extensions (#2790)
Fix a regression that broke drawing of images below cell backgrounds (#6061)
macOS: Fix the window buttons not being hidden after exiting the traditional full screen (#6009)
When reloading configuration, also reload custom MIME types from mime.types config file (#6012)
launch: Allow specifying the state (full screen/maximized/minimized) for newly created OS Windows (#6026)
Sessions: Allow specifying the OS window state via the os_window_state directive (#5863)
macOS: Display the newly created OS window in specified state to avoid or reduce the window transition animations (#6035)
macOS: Fix the maximized window not taking up full space when the title bar is hidden or when resize_in_steps is configured (#6021)
Linux: A new option linux_bell_theme to control which sound theme is used for the bell sound (#4858)
ssh kitten: Change the syntax of glob patterns slightly to match common usage elsewhere. Now the syntax is the same as “extendedglob” in most shells.
hints kitten: Allow copying matches to named buffers (#6073)
Fix overlay windows not inheriting the per-window padding and margin settings of their parents (#6063)
Wayland KDE: Fix selecting in un-focused OS window not working correctly (#6095)
Linux X11: Fix a crash if the X server requests clipboard data after we have relinquished the clipboard (#5650)
Allow stopping of URL detection at newlines via url_excluded_characters (#6122)
Linux Wayland: Fix animated images not being animated continuously (#6126)
Keyboard input: Fix text not being reported as unicode codepoints for multi-byte characters in the kitty keyboard protocol (#6167)

0.27.1 [2023-02-07]

Fix modify_font not working for strikethrough position (#5946)
Fix a regression causing the edit-in-kitty command not working if kitten is not added to PATH (#5956)
icat kitten: Fix a regression that broke display of animated GIFs over SSH (#5958)
Wayland GNOME: Fix for ibus not working when using XWayland (#5967)
Fix regression in previous release that caused incorrect entries in terminfo for modifier+F3 key combinations (#5970)
Bring back the deprecated and removed kitty +complete and delegate it to kitten for backward compatibility (#5977)
Bump the version of Go needed to build kitty to 1.20 so we can use the Go stdlib ecdh package for crypto.

0.27.0 [2023-01-31]

A new statically compiled, standalone executable, kitten (written in Go) that can be used on all UNIX-like servers for remote control (kitten @), viewing images (kitten icat), manipulating the clipboard (kitten clipboard), etc.
clipboard kitten: Allow copying arbitrary data types to/from the clipboard, not just plain text
Speed up the kitty @ executable by ~10x reducing the time for typical remote control commands from ~50ms to ~5ms
icat kitten: Speed up by using POSIX shared memory when possible to transfer image data to the terminal. Also support common image formats GIF/PNG/JPEG/WEBP/TIFF/BMP out of the box without needing ImageMagick.
Option show_hyperlink_targets to show the target of terminal hyperlinks when hovering over them with the mouse (#5830)
Keyboard protocol: Remove CSI R from the allowed encodings of the F3 key as it conflicts with the Cursor Position Report escape code (#5813)
Allow using the cwd of the original process for launch --cwd (#5672)
Session files: Expand environment variables (#5917)
Pass key events mapped to scroll actions to the program running in the terminal when the terminal is in alternate screen mode (#5839)
Implement edit-in-kitty using the new kitten static executable (#5546, #5630)
Add an option background_tint_gaps to control background image tinting for window gaps (#5596)
A new option undercurl_style to control the rendering of undercurls (#5883)
Bash integration: Fix clone-in-kitty not working on bash >= 5.2 if environment variable values contain newlines or other special characters (#5629)
A new sleep action useful in combine based mappings to make kitty sleep before executing the next action
Wayland GNOME: Workaround for latest mutter release breaking full screen for semi-transparent kitty windows (#5677)
A new option tab_title_max_length to limit the length of tab (#5718)
When drawing the tab bar have the default left and right margins drawn in a color matching the neighboring tab (#5719)
When using the include directive in kitty.conf make the environment variable KITTY_OS available for OS specific config
Wayland: Fix signal handling not working with some GPU drivers (#4636)
Remote control: When matching windows allow using negative id numbers to match recently created windows (#5753)
ZSH Integration: Bind alt+left and alt+right to move by word if not already bound. This mimics the default bindings in Terminal.app (#5793)
macOS: Allow to customize Hide, Hide Others, Minimize, and Quit global menu shortcuts. Note that clear_all_shortcuts will remove these shortcuts now (#948)
When a multi-key sequence does not match any action, send all key events to the child program (#5841)
broadcast kitten: Allow pressing a key to stop echoing of input into the broadcast window itself (#5868)
When reporting unused activity in a window, ignore activity that occurs soon after a window resize (#5881)
Fix using cursor = none not working on text that has reverse video (#5897)
Fix ssh kitten not working on FreeBSD (#5928)
macOS: Export kitty selected text to the system for use with services that accept it (patch by Sertaç Ö. Yıldız)

0.26.5 [2022-11-07]

Splits layout: Add a new mappable action to move the active window to the screen edge (#5643)
ssh kitten: Allow using absolute paths for the location of transferred data (#5607)
Fix a regression in the previous release that caused a resize_draw_strategy of static to not work (#5601)
Wayland KDE: Fix abort when pasting into Firefox (#5603)
Wayland GNOME: Fix ghosting when using background_tint (#5605)
Fix cursor position at x=0 changing to x=1 on resize (#5635)
Wayland GNOME: Fix incorrect window size in some circumstances when switching between windows with window decorations disabled (#4802)
Wayland: Fix high CPU usage when using some input methods (#5369)
Remote control: When matching window by state:focused and no window currently has keyboard focus, match the window belonging to the OS window that was last focused (#5602)

0.26.4 [2022-10-17]

macOS: Allow changing the kitty icon by placing a custom icon in the kitty config folder (#5464)
Allow centering the background_image (#5525)
X11: Fix a regression in the previous release that caused pasting from GTK based applications to have extra newlines (#5528)
Tab bar: Improve empty space management when some tabs have short titles, allocate the saved space to the active tab (#5548)
Fix background_tint not applying to window margins and padding (#3933)
Wayland: Fix background image scaling using tiled mode on high DPI screens
Wayland: Fix an abort when changing background colors with wayland_titlebar_color set to background (#5562)
Update to Unicode 15.0 (#5542)
GNOME Wayland: Fix a memory leak in gnome-shell when using client side decorations

0.26.3 [2022-09-22]

Wayland: Mark windows in which a bell occurs as urgent on compositors that support the xdg-activation protocol
Allow passing null bytes through the system clipboard (#5483)
ssh kitten: Fix KITTY_PUBLIC_KEY not being encoded properly when transmitting (#5496)
Sessions: Allow controlling which OS Window is active via the focus_os_window directive
Wayland: Fix for bug in NVIDIA drivers that prevents transparency working (#5479)
Wayland: Fix for a bug that could cause kitty to become non-responsive when using multiple OS windows in a single instance on some compositors (#5495)
Wayland: Fix for a bug preventing kitty from starting on Hyprland when using a non-unit scale (#5467)
Wayland: Generate a XDG_ACTIVATION_TOKEN when opening URLs or running programs in the background via the launch action
Fix a regression that caused kitty not to restore SIGPIPE after python nukes it when launching children. Affects bash which does not sanitize its signal mask. (#5500)
Fix a use-after-free when handling fake mouse clicks and the action causes windows to be removed/re-allocated (#5506)

0.26.2 [2022-09-05]

Allow creating overlay-main windows, which are treated as the active window unlike normal overlays (#5392)
hints kitten: Allow using The launch command as the program to run, to open the result in a new kitty tab/window/etc. (#5462)
hyperlinked_grep kitten: Allow control over which parts of rg output are hyperlinked (#5428)
Fix regression in 0.26.0 that caused launching kitty without working STDIO handles to result in high CPU usage and prewarming failing (#5444)
The launch command: Allow setting the margin and padding for newly created windows (#5463)
macOS: Fix regression in 0.26.0 that caused asking the user for a line of input such as for set_tab_title to not work (#5447)
hints kitten: hyperlink matching: Fix hints occasionally matching text on subsequent line as part of hyperlink (#5450)
Fix a regression in 0.26.0 that broke mapping of native keys whose key codes did not fit in 21 bits (#5452)
Wayland: Fix remembering window size not accurate when client side decorations are present
Fix an issue where notification identifiers were not sanitized leading to code execution if the user clicked on a notification popup from a malicious source. Thanks to Carter Sande for discovering this vulnerability.

0.26.1 [2022-08-30]

ssh kitten: Fix executable permission missing from kitty bootstrap script (#5438)
Fix a regression in 0.26.0 that caused kitty to no longer set the LANG environment variable on macOS (#5439)
Allow specifying a title when using the set_tab_title action (#5441)

0.26.0 [2022-08-29]

A new option remote_control_password to use fine grained permissions for what can be remote controlled (#5320)
Reduce startup latency by ~30 milliseconds when running kittens via key bindings inside kitty (#5159)
A new option modify_font to adjust various font metrics like underlines, cell sizes etc. (#5265)
A new shortcut ctrl+shift+f1 to display the kitty docs in a browser
Graphics protocol: Only delete temp files if they have the string tty-graphics-protocol in their file paths. This prevents deletion of arbitrary files in /tmp.
Deprecate the adjust_baseline, adjust_line_height and adjust_column_width options in favor of modify_font
Wayland: Fix a regression in the previous release that caused mouse cursor animation and keyboard repeat to stop working when switching seats (#5188)
Allow resizing windows created in session files (#5196)
Fix horizontal wheel events not being reported to client programs when they grab the mouse (#2819)
macOS: Remote control: Fix unable to launch a new OS window or background process when there is no OS window (#5210)
macOS: Fix unable to open new tab or new window when there is no OS window (#5276)
kitty @ set-colors: Fix changing inactive_tab_foreground not working (#5214)
macOS: Fix a regression that caused switching keyboard input using Eisu and Kana keys not working (#5232)
Add a mappable action to toggle the mirrored setting for the tall and fat layouts (#5344)
Add a mappable action to switch between predefined bias values for the tall and fat layouts (#5352)
Wayland: Reduce flicker at startup by not using render frames immediately after a resize (#5235)
Linux: Update cursor position after all key presses not just pre-edit text changes (#5241)
ssh kitten: Allow ssh kitten to work from inside tmux, provided the tmux session inherits the correct KITTY env vars (#5227)
ssh kitten: A new option --symlink-strategy to control how symlinks are copied to the remote machine (#5249)
ssh kitten: Allow pressing Ctrl+C to abort ssh before the connection is completed (#5271)
Bash integration: Fix declare not creating global variables in .bashrc (#5254)
Bash integration: Fix the inherit_errexit option being set by shell integration (#5349)
kitty @ scroll-window allow scrolling by fractions of a screen (#5294)
remote files kitten: Fix working with files whose names have characters that need to be quoted in shell scripts (#5313)
Expand ~ in paths configured in editor and exe_search_path (#5298)
Allow showing the working directory of the active window in tab titles (#5314)
ssh kitten: Allow completion of ssh options between the destination and command (#5322)
macOS: Fix speaking selected text not working (#5357)
Allow ignoring failure to close windows/tabs via rc commands (#5406)
Fix hyperlinks not present when fetching text from the history buffer (#5427)

0.25.2 [2022-06-07]

A new command edit-in-kitty to Edit files in new kitty windows even over SSH
Allow getting the last non-empty command output easily via an action or remote control (#4973)
Fix a bug that caused macos_colorspace to always be default regardless of its actual value (#5129)
diff kitten: A new option kitten-diff.ignore_name to exclude files and directories from being scanned (#5171)
ssh kitten: Fix bash not being executed as a login shell since kitty 0.25.0 (#5130)
macOS: When pasting text and the clipboard has a filesystem path, paste the full path instead of the text, which is sometimes just the file name (#5142)
macOS: Allow opening executables without a file extension with kitty as well (#5160)
Themes kitten: Add a tab to show user defined custom color themes separately (#5150)
Iosevka: Fix incorrect rendering when there is a combining char that does not group with its neighbors (#5153)
Weston: Fix client side decorations flickering on slow computers during window resize (#5162)
Remote control: Fix commands with large or asynchronous payloads like kitty @ set-background-image, kitty @ set-window-logo and kitty @ select-window not working correctly when using a socket (#5165)
hints kitten: Fix surrounding quotes/brackets and embedded carriage returns not being removed when using line number processing (#5170)

0.25.1 [2022-05-26]

Shell integration: Add a command to Clone the current shell into a new window
Remote control: Allow using Boolean operators when constructing queries to match windows or tabs
Sessions: Fix os_window_size and os_window_class not applying to the first OS Window (#4957)
Allow using the cwd of the oldest as well as the newest foreground process for launch --cwd (#4869)
Bash integration: Fix the value of shell_integration not taking effect if the integration script is sourced in bashrc (#4964)
Fix a regression in the previous release that caused mouse move events to be incorrectly reported as drag events even when a button is not pressed (#4992)
remote file kitten: Integrate with the ssh kitten for improved performance and robustness. Re-uses the control master connection of the ssh kitten to avoid round-trip latency.
Fix tab selection when closing a new tab not correct in some scenarios (#4987)
A new action open_url to open the specified URL (#5004)
A new option select_by_word_characters_forward that allows changing which characters are considered part of a word to the right when double clicking to select words (#5103)
macOS: Make the global menu shortcut to open kitty website configurable (#5004)
macOS: Add the macos_colorspace option to control what color space colors are rendered in (#4686)
Fix reloading of config not working when kitty.conf does not exist when kitty is launched (#5071)
Fix deleting images by row not calculating image bounds correctly (#5081)
Increase the max number of combining chars per cell from two to three, without increasing memory usage.
Linux: Load libfontconfig at runtime to allow the binaries to work for running kittens on servers without FontConfig
GNOME: Fix for high CPU usage caused by GNOME’s text input subsystem going into an infinite loop when IME cursor position is updated after a done event (#5105)

0.25.0 [2022-04-11]

Truly convenient SSH: automatic shell integration when using SSH. Easily clone local shell and editor configuration on remote machines, and automatic re-use of existing connections to avoid connection setup latency.
When pasting URLs at shell prompts automatically quote them. Also allow filtering pasted text and confirm pastes. See paste_actions for details. (#4873)
Change the default value of confirm_os_window_close to ask for confirmation when closing windows that are not sitting at shell prompts
A new value last_reported for launch --cwd to use the current working directory last reported by the program running in the terminal
macOS: When using Apple’s less as the pager for viewing scrollback strip out OSC codes as it can’t parse them (#4788)
diff kitten: Fix incorrect rendering in rare circumstances when scrolling after changing the context size (#4831)
icat kitten: Fix a regression that broke kitty +kitten icat --print-window-size (#4818)
Wayland: Fix hide_window_decorations causing docked windows to be resized on blur (#4797)
Bash integration: Prevent shell integration code from running twice if user enables both automatic and manual integration
Bash integration: Handle existing PROMPT_COMMAND ending with a literal newline
Fix continued lines not having their continued status reset on line feed (#4837)
macOS: Allow the New kitty Tab/Window Here services to open multiple selected folders. (#4848)
Wayland: Fix a regression that broke IME when changing windows/tabs (#4853)
macOS: Fix Unicode paths not decoded correctly when dropping files (#4879)
Avoid flicker when starting kittens such as the hints kitten (#4674)
A new action scroll_prompt_to_top to move the current prompt to the top (#4891)
select_tab: Use stable numbers when selecting the tab (#4792)
Only check for updates in the official binary builds. Distro packages or source builds will no longer check for updates, regardless of the value of update_check_interval.
Fix inactive_text_alpha still being applied to the cursor hidden window after focus (#4928)
Fix resizing window that is extra tall/wide because of left-over cells not working reliably (#4913)
A new action close_other_tabs_in_os_window to close other tabs in the active OS window (#4944)

0.24.4 [2022-03-03]

Shell integration: Fix the default Bash $HISTFILE changing to ~/.sh_history instead of ~/.bash_history (#4765)
Linux binaries: Fix binaries not working on systems with older Wayland client libraries (#4760)
Fix a regression in the previous release that broke kittens launched with STDIN not connected to a terminal (#4763)
Wayland: Fix surface configure events not being acknowledged before commit the resized buffer (#4768)

0.24.3 [2022-02-28]

Bash integration: No longer modify ~/.bashrc to load shell integration. It is recommended to remove the lines used to load the shell integration from ~/.bashrc as they are no-ops.
macOS: Allow kitty to handle various URL types. Can be configured via Scripting the opening of files with kitty (#4618)
macOS: Add a new service Open with kitty to open file types that are not recognized by the system (#4641)
Splits layout: A new value for launch --location to auto-select the split axis when splitting existing windows. Wide windows are split side-by-side and tall windows are split one-above-the-other
hints kitten: Fix a regression that broke recognition of path:linenumber:colnumber (#4675)
Fix a regression in the previous release that broke active_tab_foreground (#4620)
Fix show_last_command_output not working when the output is stored partially in the scrollback pager history buffer (#4435)
When dropping URLs/files onto kitty at a shell prompt insert them appropriately quoted and space separated (#4734)
Improve CWD detection when there are multiple foreground processes in the TTY process group
A new option narrow_symbols to turn off opportunistic wide rendering of private use codepoints
ssh kitten: Fix location of generated terminfo files on NetBSD (#4622)
A new action to clear the screen up to the line containing the cursor, see clear_terminal
A new action copy_ansi_to_clipboard to copy the current selection with ANSI formatting codes (#4665)
Linux: Do not rescale fallback fonts to match the main font cell height, instead just set the font size and let FreeType take care of it. This matches rendering on macOS (#4707)
macOS: Fix a regression in the previous release that broke switching input sources by keyboard (#4621)
macOS: Add the default shortcut cmd+k to clear the terminal screen and scrollback up to the cursor (#4625)
Fix a regression in the previous release that broke strikethrough (#4632)
A new action scroll_prompt_to_bottom to move the current prompt to the bottom, filling in the window from the scrollback (#4634)
Add two special arguments @first-line-on-screen and @last-line-on-screen for the launch command to be used for pager positioning. (#4462)
Linux: Fix rendering of emoji when using scalable fonts such as Segoe UI Emoji
Shell integration: bash: Dont fail if an existing PROMPT_COMMAND ends with a semi-colon (#4645)
Shell integration: bash: Fix rendering of multiline prompts with more than two lines (#4681)
Shell integration: fish: Check fish version 3.3.0+ and exit on outdated versions (#4745)
Shell integration: fish: Fix pipestatus being overwritten (#4756)
Linux: Fix fontconfig alias not being used if the aliased font is dual spaced instead of monospaced (#4649)
macOS: Add an option macos_menubar_title_max_length to control the max length of the window title displayed in the global menubar (#2132)
Fix touch_scroll_multiplier also taking effect in terminal programs such as vim that handle mouse events themselves (#4680)
Fix symbol/PUA glyphs loaded via symbol_map instead of as fallbacks not using following spaces to render larger versions (#4670)
macOS: Fix regression in previous release that caused Apple’s global shortcuts to not work if they had never been configured on a particular machine (#4657)
Fix a fast click, move mouse, click sequence causing the first click event to be discarded (#4603)
Wayland: Fix wheel mice with line based scrolling being incorrectly handled as high precision devices (#4694)
Wayland: Fix touchpads and high resolution wheels not scrolling at the same speed on monitors with different scales (#4703)
Add an option wheel_scroll_min_lines to set the minimum number of lines for mouse wheel scrolling when using a mouse with a wheel that generates very small offsets when slow scrolling (#4710)
macOS: Make the shortcut to toggle full screen configurable (#4714)
macOS: Fix the mouse cursor being set to arrow after switching desktops or toggling full screen (#4716)
Fix copying of selection after selection has been scrolled off history buffer raising an error (#4713)

0.24.2 [2022-02-03]

macOS: Allow opening text files, images and directories with kitty when launched using “Open with” in Finder (#4460)
Allow including config files matching glob patterns in kitty.conf (#4533)
Shell integration: Fix bash integration not working when PROMPT_COMMAND is used to change the prompt variables (#4476)
Shell integration: Fix cursor shape not being restored to default when running commands in the shell
Improve the UI of the ask kitten (#4545)
Allow customizing the placement and formatting of the tab_activity_symbol and bell_on_tab symbols by adding them to the tab_title_template (#4581, #4507)
macOS: Persist “Secure Keyboard Entry” across restarts to match the behavior of Terminal.app (#4471)
hints kitten: Fix common single letter extension files not being detected (#4491)
Support dotted and dashed underline styles (#4529)
For the vertical and horizontal layouts have the windows arranged on a ring rather than a plane. This means the first and last window are considered neighbors (#4494)
A new action to clear the current selection (#4600)
Shell integration: fish: Fix cursor shape not working with fish’s vi mode (#4508)
Shell integration: fish: Dont override fish’s native title setting functionality. See discussion.
macOS: Fix hiding via cmd+h not working on macOS 10.15.7 (#4472)
Draw the dots for braille characters more evenly spaced at all font sizes (#4499)
icat kitten: Add options to mirror images and remove their transparency before displaying them (#4513)
macOS: Respect the users system-wide global keyboard shortcut preferences (#4501)
macOS: Fix a few key-presses causing beeps from Cocoa’s text input system (#4489)
macOS: Fix using shortcuts from the global menu bar as subsequent key presses in a multi key mapping not working (#4519)
Fix getting last command output not working correctly when the screen is scrolled (#4522)
Show number of windows per tab in the select_tab action (#4523)
macOS: Fix the shift key not clearing pre-edit text in IME (#4541)
Fix clicking in a window to focus it and typing immediately sometimes having unexpected effects if at a shell prompt (#4128)
themes kitten: Allow writing to a different file than kitty.conf.

0.24.1 [2022-01-06]

Shell integration: Work around conflicts with some zsh plugins (#4428)
Have the zero width space and various other characters from the Other, formatting Unicode category be treated as combining characters (#4439)
Fix using --shell-integration with setup.py broken (#4434)
Fix showing debug information not working if kitty’s STDIN is not a tty (#4424)
Linux: Fix a regression that broke rendering of emoji with variation selectors (#4444)

0.24.0 [2022-01-04]

Integrate kitty closely with common shells such as zsh, fish and bash. This allows lots of niceties such as jumping to previous prompts, opening the output of the last command in a new window, etc. See Shell integration for details. Packagers please read Notes for Linux/macOS packagers.
A new shortcut ctrl+shift+f7 to visually focus a window using the keyboard. Pressing it causes numbers to appear over each visible window and you can press the number to focus the corresponding window (#4110)
A new facility window_logo_path to draw an arbitrary PNG image as logo in the corner of a kitty window (#4167)
Allow rendering the cursor with a reverse video effect. See cursor for details (#126)
Allow rendering the mouse selection with a reverse video effect. See selection_foreground (#646)
A new option tab_bar_align to draw the tab bar centered or right aligned (#3946)
Allow the user to supply a custom Python function to draw tab bar. See tab_bar_style
A new remote control command to change the tab color <kitty @ set-tab-color> (#1287)
A new remote control command to visually select a window <kitty @ select-window> (#4165)
Add support for reporting mouse events with pixel coordinates using the SGR_PIXEL_PROTOCOL introduced in xterm 359
When programs ask to read from the clipboard prompt, ask the user to allow the request by default instead of denying it by default. See clipboard_control for details (#4022)
A new mappable action swap_with_window to swap the current window with another window in the tab, visually
A new remote control command <kitty @ set-enabled-layouts> to change the enabled layouts in a tab (#4129)
A new option bell_path to specify the path to a sound file to use as the bell sound
A new option exe_search_path to modify the locations kitty searches for executables to run (#4324)
broadcast kitten: Show a “fake” cursor in all windows being broadcast too (#4225)
Allow defining aliases for more general actions, not just kittens (#4260)
Fix a regression that caused kitty --title to not work when opening new OS windows using kitty --single-instance (#3893)
icat kitten: Fix display of JPEG images that are rotated via EXIF data and larger than available screen size (#3949)
macOS: Fix SIGUSR1 quitting kitty instead of reloading the config file (#3952)
Launch command: Allow specifying the OS window title
broadcast kitten: Allow broadcasting ctrl+c (#3956)
Fix space ligatures not working with Iosevka for some characters in the Enclosed Alphanumeric Supplement (#3954)
hints kitten: Fix a regression that caused using the default open program to trigger open actions instead of running the program (#3968)
Allow deleting environment variables in env by specifying just the variable name, without a value
Fix active_tab_foreground not being honored when tab_bar_style is slant (#4053)
When a tab_bar_background is specified it should extend to the edges of the OS window (#4054)
Linux: Fix IME with fcitx5 not working after fcitx5 is restarted (#4059)
Various improvements to IME integration (#4219)
Remote file transfer: Fix transfer not working if custom ssh port or identity is specified on the command line (#4067)
Unicode input kitten: Implement scrolling when more results are found than the available display space (#4068)
Allow middle clicking on a tab to close it (#4151)
The command line option --watcher has been deprecated in favor of the watcher option in kitty.conf. It has the advantage of applying to all windows, not just the initially created ones. Note that --watcher now also applies to all windows, not just initially created ones.
Backward incompatibility: No longer turn on the kitty extended keyboard protocol’s disambiguate mode when the client sends the XTMODKEYS escape code. Applications must use the dedicated escape code to turn on the protocol. (#4075)
Fix soft hyphens not being preserved when round tripping text through the terminal
macOS: Fix ctrl+shift with Esc or F1 - F12 not working (#4109)
macOS: Fix resize_in_steps not working correctly on high DPI screens (#4114)
Fix the resize OS Windows <kitty @ resize-os-window> setting a slightly incorrect size on high DPI screens (#4114)
kitty @ launch - when creating tabs with the --match option create the tab in the OS Window containing the result of the match rather than the active OS Window (#4126)
Linux X11: Add support for 10bit colors (#4150)
Fix various issues with changing tab_bar_background by remote control (#4152)
A new option tab_bar_margin_color to control the color of the tab bar margins
A new option visual_bell_color to customize the color of the visual bell (#4181)
Add support for OSC 777 based desktop notifications
Wayland: Fix pasting from applications that use a MIME type of “text/plain” rather than “text/plain;charset=utf-8” not working (#4183)
A new mappable action to close windows with a confirmation (#4195)
When remembering OS window sizes for full screen windows use the size before the window became fullscreen (#4221)
macOS: Fix keyboard input not working after toggling fullscreen till the window is clicked in
A new mappable action nth_os_window to focus the specified nth OS window. (#4316)
macOS: The kitty window can be scrolled by the mouse wheel when OS window not in focus. (#4371)
macOS: Light or dark system appearance can be specified in macos_titlebar_color and used in kitty themes. (#4378)

0.23.1 [2021-08-17]

macOS: Fix themes kitten failing to download themes because of missing SSL root certificates (#3936)
A new option clipboard_max_size to control the maximum size of data that kitty will transmit to the system clipboard on behalf of programs running inside it (#3937)
When matching windows/tabs in kittens or using remote control, allow matching by recency. recent:0 matches the active window/tab, recent:1 matches the previous window/tab and so on
themes kitten: Fix only the first custom theme file being loaded correctly (#3938)

0.23.0 [2021-08-16]

A new themes kitten to easily change kitty themes. Choose from almost two hundred themes in the kitty themes repository
A new style for the tab bar that makes tabs looks like the tabs in a physical tabbed file, see tab_bar_style
Make the visual bell flash more gentle, especially on dark themes (#2937)
Fix kitty --title not overriding the OS Window title when multiple tabs are present. Also this option is no longer used as the default title for windows, allowing individual tabs/windows to have their own titles, even when the OS Window has a fixed overall title (#3893)
Linux: Fix some very long ligatures being rendered incorrectly at some font sizes (#3896)
Fix shift+middle click to paste sending a mouse press event but no release event which breaks some applications that grab the mouse but can’t handle mouse events (#3902)
macOS: When the language is set to English and the country to one for which an English locale does not exist, set LANG to en_US.UTF-8 (#3899)
terminfo: Fix “cnorm” the property for setting the cursor to normal using a solid block rather than a blinking block cursor (#3906)
Add clear_all_mouse_actions to clear all mouse actions defined to that point (#3907)
Fix the remote file kitten not working when using -- with ssh. The ssh kitten was recently changed to do this (#3929)
When dragging word or line selections, ensure the initially selected item is never deselected. This matches behavior in most other programs (#3930)
hints kitten: Make copy/paste with the kitty +kitten hints --program option work when using the self kitty +kitten hints --linenum-action (#3931)

0.22.2 [2021-08-02]

macOS: Fix a long standing bug that could cause kitty windows to stop updating, that got worse in the previous release (#3890 and #2016)
Wayland: A better fix for compositors like sway that can toggle client side decorations on and off (#3888)

0.22.1 [2021-07-31]

Fix a regression in the previous release that broke kitty --help (#3869)
Graphics protocol: Fix composing onto currently displayed frame not updating the frame on the GPU (#3874)
Fix switching to previously active tab after detaching a tab not working (#3871)
macOS: Fix an error on Apple silicon when enumerating monitors (#3875)
detach_window: Allow specifying the previously active tab or the tab to the left/right of the active tab (#3877)
broadcast kitten: Fix a regression in 0.20.0 that broke sending of some keys, such as backspace
Linux binary: Remove any RPATH build artifacts from bundled libraries
Wayland: If the compositor turns off server side decorations after turning them on do not draw client side decorations (#3888)

0.22.0 [2021-07-26]

Add a new toggle_layout action to easily zoom/unzoom a window
When right clicking to extend a selection, move the nearest selection boundary rather than the end of the selection. To restore previous behavior use mouse_map right press ungrabbed mouse_selection move-end.
When opening hyperlinks, allow defining open actions for directories (#3836)
When using the OSC 52 escape code to copy to clipboard allow large copies (up to 8MB) without needing a kitty specific chunking protocol. Note that if you used the chunking protocol in the past, it will no longer work and you should switch to using the unmodified protocol which has the advantage of working with all terminal emulators.
Fix a bug in the implementation of the synchronized updates escape code that could cause incorrect parsing if either the pending buffer capacity or the pending timeout were exceeded (#3779)
A new remote control command to resize the OS Window <kitty @ resize-os-window>
Graphics protocol: Add support for composing rectangles from one animation frame onto another (#3809)
diff kitten: Remove limit on max line length of 4096 characters (#3806)
Fix turning off cursor blink via escape codes not working (#3808)
Allow using neighboring window operations in the stack layout. The previous window is considered the left and top neighbor and the next window is considered the bottom and right neighbor (#3778)
macOS: Render colors in the sRGB colorspace to match other macOS terminal applications (#2249)
Add a new variable {num_window_groups} for the tab_title_template (#3837)
Wayland: Fix initial_window_width/height specified in cells not working on High DPI screens (#3834)
A new theme for the kitty website with support for dark mode.
Render ┄ ┅ ┆ ┇ ┈ ┉ ┊ ┋ with spaces at the edges. Matches rendering in most other programs and allows long chains of them to look better (#3844)
hints kitten: Detect paths and hashes that appear over multiple lines. Note that this means that all line breaks in the text are no longer n soft breaks are instead r. If you use a custom regular expression that is meant to match over line breaks, you will need to match over both. (#3845)
Allow leading or trailing spaces in tab_activity_symbol
Fix mouse actions not working when caps lock or num lock are engaged (#3859)
macOS: Fix automatic detection of bold/italic faces for fonts that use the family name as the full face name of the regular font not working (#3861)
clipboard kitten: fix copies to clipboard not working without the kitty +kitten clipboard --wait-for-completion option

0.21.2 [2021-06-28]

A new adjust_baseline option to adjust the vertical alignment of text inside a line (#3734)
A new url_excluded_characters option to exclude additional characters when detecting URLs under the mouse (#3738)
Fix a regression in 0.21.0 that broke rendering of private use Unicode symbols followed by spaces, when they also exist not followed by spaces (#3729)
ssh kitten: Support systems where the login shell is a non-POSIX shell (#3405)
ssh kitten: Add completion (#3760)
ssh kitten: Fix “Connection closed” message being printed by ssh when running remote commands
Add support for the XTVERSION escape code
macOS: Fix a regression in 0.21.0 that broke middle-click to paste from clipboard (#3730)
macOS: Fix shortcuts in the global menu bar responding slowly when cursor blink is disabled/timed out (#3693)
When displaying scrollback ensure that the window does not quit if the amount of scrollback is less than a screen and the user has the --quit-if-one-screen option enabled for less (#3740)
Linux: Fix Emoji/bitmapped fonts not use able in symbol_map
query terminal kitten: Allow querying font face and size information (#3756)
hyperlinked grep kitten: Fix context options not generating contextual output (#3759)
Allow using superscripts in tab titles (#3763)
Unicode input kitten: Fix searching when a word has more than 1024 matches (#3773)

0.21.1 [2021-06-14]

macOS: Fix a regression in the previous release that broke rendering of strikeout (#3717)
macOS: Fix a crash when rendering ligatures larger than 128 characters (#3724)
Fix a regression in the previous release that could cause a crash when changing layouts and mousing (#3713)

0.21.0 [2021-06-12]

Allow reloading the kitty.conf config file by pressing ctrl+shift+f5. (#1292)
Allow clicking URLs to open them without needing to also hold ctrl+shift
Allow remapping all mouse button press/release events to perform arbitrary actions. See details (#1033)
Support infinite length ligatures (#3504)
Backward incompatibility: The options to control which modifiers keys to press for various mouse actions have been removed, if you used these options, you will need to replace them with configuration using the new mouse actions framework as they will be ignored. The options were: terminal_select_modifiers, rectangle_select_modifiers and open_url_modifiers.
Add a configurable mouse action (ctrl+alt+triplepress to select from the clicked point to the end of the line. (#3585)
Add the ability to un-scroll the screen to the kitty @ scroll-window remote control command (#3604)
A new option, tab_bar_margin_height to add margins around the top and bottom edges of the tab bar (#3247)
Unicode input kitten: Fix a regression in 0.20.0 that broke keyboard handling when the NumLock or CapsLock modifiers were engaged. (#3587)
Fix a regression in 0.20.0 that sent incorrect bytes for the F1-F4 keys in rmkx mode (#3586)
macOS: When the Apple Color Emoji font lacks an emoji glyph search for it in other installed fonts (#3591)
macOS: Fix rendering getting stuck on some machines after sleep/screensaver (#2016)
macOS: Add a new Shell menu to the global menubar with some commonly used actions (#3653)
macOS: Fix the baseline for text not matching other CoreText based applications for some fonts (#2022)
Add a few more special commandline arguments for the launch command. Now all KITTY_PIPE_DATA is also available via command line argument substitution (#3593)
Fix dynamically changing the background color in a window causing rendering artifacts in the tab bar (#3595)
Fix passing STDIN to launched background processes causing them to not inherit environment variables (#3603)
Fix deleting windows that are not the last window via remote control leaving no window focused (#3619)
Add an option kitten @ get-text --add-cursor to also get the current cursor position and state as ANSI escape codes (#3625)
Add an option kitten @ get-text --add-wrap-markers to add line wrap markers to the output (#3633)
Improve rendering of curly underlines on HiDPI screens (#3637)
ssh kitten: Mimic behavior of ssh command line client more closely by executing any command specified on the command line via the users’ shell just as ssh does (#3638)
Fix trailing parentheses in URLs not being detected (#3688)
Tab bar: Use a lower contrast color for tab separators (#3666)
Fix a regression that caused using the title command in session files to stop working (#3676)
macOS: Fix a rare crash on exit (#3686)
Fix ligatures not working with the Iosevka font (requires Iosevka >= 7.0.4) (#297)
Remote control: Allow matching tabs by index number in currently active OS Window (#3708)
ssh kitten: Fix non-standard properties in terminfo such as the ones used for true color not being copied (#312)

0.20.3 [2021-05-06]

macOS: Distribute universal binaries with both ARM and Intel architectures
A new show_key kitten to easily see the bytes generated by the terminal for key presses in the various keyboard modes (#3556)
Linux: Fix keyboard layout change keys defined via compose rules not being ignored
macOS: Fix Spotlight search of global menu not working in non-English locales (#3567)
Fix tab activity symbol not appearing if no other changes happen in tab bar even when there is activity in a tab (#3571)
Fix focus changes not being sent to windows when focused window changes because of the previously focused window being closed (#3571)

0.20.2 [2021-04-28]

A new protocol extension to unscroll text from the scrollback buffer onto the screen. Useful, for example, to restore the screen after showing completions below the shell prompt.
A new remote control command kitten @ env to change the default environment passed to newly created windows (#3529)
Linux: Fix binary kitty builds not able to load fonts in WOFF2 format (#3506)
macOS: Prevent option based shortcuts for being used for global menu actions (#3515)
Fix kitty @ close-tab not working with pipe based remote control (#3510)
Fix removal of inactive tab that is before the currently active tab causing the highlighted tab to be incorrect (#3516)
icat kitten: Respect EXIF orientation when displaying JPEG images (#3518)
GNOME: Fix maximize state not being remembered when focus changes and window decorations are hidden (#3507)
GNOME: Add a new wayland_titlebar_color option to control the color of the kitty window title bar
Fix reading kitty --session from STDIN not working when the kitty --detach option is used (#3523)
Special case rendering of the few remaining Powerline box drawing chars (#3535)
Fix kitty @ set-colors not working for the active_tab_foreground.

0.20.1 [2021-04-19]

icat: Fix some broken GIF images with no frame delays not being animated (#3498)
hints kitten: Fix sending hyperlinks to their default handler not working (#3500)
Wayland: Fix regression in previous release causing window decorations to be drawn even when compositor supports server side decorations (#3501)

0.20.0 [2021-04-19]

Support display of animated images kitty +kitten icat animation.gif. See Animation for details on animation support in the kitty graphics protocol.
A new keyboard reporting protocol with various advanced features that can be used by full screen terminal programs and even games, see Comprehensive keyboard handling in terminals (#3248)
Backward incompatibility: Session files now use the full launch command with all its capabilities. However, the syntax of the command is slightly different from before. In particular watchers are now specified directly on launch and environment variables are set using --env.
Allow setting colors when creating windows using the launch command.
A new option tab_powerline_style to control the appearance of the tab bar when using the powerline tab bar style.
A new option scrollback_fill_enlarged_window to fill extra lines in the window when the window is expanded with lines from the scrollback (#3371)
diff kitten: Implement recursive diff over SSH (#3268)
ssh kitten: Allow using python instead of the shell on the server, useful if the shell used is a non-POSIX compliant one, such as fish (#3277)
Add support for the color settings stack that XTerm copied from us without acknowledgement and decided to use incompatible escape codes for.
Add entries to the terminfo file for some user capabilities that are shared with XTerm (#3193)
The launch command now does more sophisticated resolving of executables to run. The system-wide PATH is used first, then system specific default paths, and finally the PATH inside the shell.
Double clicking on empty tab bar area now opens a new tab (#3201)
kitty @ ls: Show only environment variables that are different for each window, by default.
When passing a directory or a non-executable file as the program to run to kitty opens it with the shell or by parsing the shebang, instead of just failing.
Linux: Fix rendering of emoji followed by the graphics variation selector not being colored with some fonts (#3211)
Unicode input: Fix using index in select by name mode not working for indices larger than 16. Also using an index does not filter the list of matches. (#3219)
Wayland: Add support for the text input protocol (#3410)
Wayland: Fix mouse handling when using client side decorations
Wayland: Fix un-maximizing a window not restoring its size to what it was before being maximized
GNOME/Wayland: Improve window decorations the titlebar now shows the window title. Allow running under Wayland on GNOME by default. (#3284)
Panel kitten: Allow setting WM_CLASS (#3233)
macOS: Add menu items to close the OS window and the current tab (#3240, #3246)
macOS: Allow opening script and command files with kitty (#3366)
Also detect gemini:// URLs when hovering with the mouse (#3370)
When using a non-US keyboard layout and pressing ctrl+key when the key matches an English key, send that to the program running in the terminal automatically (#2000)
When matching shortcuts, also match on shifted keys, so a shortcut defined as ctrl+plus will match a keyboard where you have to press shift+equal to get the plus key (#2000)
Fix extra space at bottom of OS window when using the fat layout with the tab bar at the top (#3258)
Fix window icon not working on X11 with 64bits (#3260)
Fix OS window sizes under 100px resulting in scaled display (#3307)
Fix rendering of ligatures in the latest release of Cascadia code, which for some reason puts empty glyphs after the ligature glyph rather than before it (#3313)
Improve handling of infinite length ligatures in newer versions of FiraCode and CascadiaCode. Now such ligatures are detected based on glyph naming convention. This removes the gap in the ligatures at cell boundaries (#2695)
macOS: Disable the native operating system tabs as they are non-functional and can be confusing (#3325)
hints kitten: When using the linenumber action with a background action, preserve the working directory (#3352)
Graphics protocol: Fix suppression of responses not working for chunked transmission (#3375)
Fix inactive tab closing causing active tab to change (#3398)
Fix a crash on systems using musl as libc (#3395)
Improve rendering of rounded corners by using a rectircle equation rather than a cubic bezier (#3409)
Graphics protocol: Add a control to allow clients to specify that the cursor should not move when displaying an image (#3411)
Fix marking of text not working on lines that contain zero cells (#3403)
Fix the selection getting changed if the screen contents scroll while the selection is in progress (#3431)
X11: Fix resize_in_steps being applied even when window is maximized (#3473)

0.19.3 [2020-12-19]

Happy holidays to all kitty users!
A new broadcast kitten to type in all kitty windows simultaneously (#1569)
Add a new mappable select_tab action to choose a tab to switch to even when the tab bar is hidden (#3115)
Allow specifying text formatting in tab_title_template (#3146)
Linux: Read font_features from the FontConfig database as well, so that they can be configured in a single, central location (#3174)
Graphics protocol: Add support for giving individual image placements their own ids and for asking the terminal emulator to assign ids for images. Also allow suppressing responses from the terminal to commands. These are backwards compatible protocol extensions. (#3133, #3163)
Distribute extra pixels among all eight-blocks rather than adding them all to the last block (#3097)
Fix drawing of a few sextant characters incorrect (#3105)
macOS: Fix minimize not working for chromeless windows (#3112)
Preserve lines in the scrollback if a scrolling region is defined that is contiguous with the top of the screen (#3113)
Wayland: Fix key repeat being stopped by the release of an unrelated key (#2191)
Add an option, detect_urls to control whether kitty will detect URLs when the mouse moves over them (#3118)
Graphics protocol: Dont return filename in the error message when opening file fails, since filenames can contain control characters (#3128)
macOS: Partial fix for traditional fullscreen not working on Big Sur (#3100)
Fix one ANSI formatting escape code not being removed from the pager history buffer when piping it as plain text (#3132)
Match the save/restore cursor behavior of other terminals, for the sake of interoperability. This means that doing a DECRC without a prior DECSC is now undefined (#1264)
Fix mapping remote_control send-text not working (#3147)
Add a right option for tab_switch_strategy (#3155)
Fix a regression in 0.19.0 that caused a rare crash when using the optional scrollback_pager_history_size (#3049)
Full screen kittens: Fix incorrect cursor position after kitten quits (#3176)

0.19.2 [2020-11-13]

A new Query terminal kitten to easily query the running kitty via escape codes to detect its version, and the values of configuration options that enable or disable terminal features.
Options to control mouse pointer shape, default_pointer_shape, and pointer_shape_when_dragging (#3041)
Font independent rendering for braille characters, which ensures they are properly aligned at all font sizes.
Fix a regression in 0.19.0 that caused borders not to be drawn when setting window_margin_width and keeping draw_minimal_borders on (#3017)
Fix a regression in 0.19.0 that broke rendering of one-eight bar unicode characters at very small font sizes (#3025)
Wayland: Fix a crash under GNOME when using multiple OS windows (#3066)
Fix selections created by dragging upwards not being auto-cleared when screen contents change (#3028)
macOS: Fix kitty not being added to PATH automatically when using pre-built binaries (#3063)
Allow adding MIME definitions to kitty by placing a mime.types file in the kitty config directory (#3056)
Dont ignore --title when using a session file that defines no windows (#3055)
Fix the send_text action not working in URL handlers (#3081)
Fix last character of URL not being detected if it is the only character on a new line (#3088)
Don’t restrict the ICH,DCH,REP control codes to only the current scroll region (#3090, #3096)

0.19.1 [2020-10-06]

hints kitten: Add an ip type for easy selection of IP addresses (#3009)
Fix a regression that caused a segfault when using scrollback_pager_history_size and it needs to be expanded (#3011)
Fix update available notifications repeating (#3006)

0.19.0 [2020-10-04]

Add support for hyperlinks from terminal programs. Controlled via allow_hyperlinks (#68)
Add support for easily editing or downloading files over SSH sessions without the need for any special software, see Remote files
A new Hyperlinked grep kitten to easily search files and open the results at the matched line by clicking on them.
Allow customizing the actions kitty takes when clicking on URLs
Improve rendering of borders when using minimal borders. Use less space and do not display a box around active windows
Add a new extensible escape code to allow terminal programs to trigger desktop notifications. See Desktop notifications (#1474)
Implement special rendering for various characters from the set of “Symbols for Legacy Computing” from the Unicode 13 standard
Unicode input kitten: Allow choosing symbols from the NERD font as well. These are mostly Private Use symbols not in any standard, however are common. (#2972)
Allow specifying border sizes in either pts or pixels. Change the default to 0.5pt borders as this works best with the new minimal border style
Add support for displaying correct colors with non-sRGB PNG files (Adds a dependency on liblcms2)
hints kitten: Add a new kitty +kitten hints --type of hyperlink useful for activating hyperlinks using just the keyboard
Allow tracking focus change events in watchers (#2918)
Allow specifying watchers in session files and via a command line argument (#2933)
Add a setting tab_activity_symbol to show a symbol in the tab title if one of the windows has some activity after it was last focused (#2515)
macOS: Switch to using the User Notifications framework for notifications. The current notifications framework has been deprecated in Big Sur. The new framework only allows notifications from signed and notarized applications, so people using kitty from homebrew/source are out of luck. Complain to Apple.
When in the main screen and a program grabs the mouse, do not use the scroll wheel events to scroll the scrollback buffer, instead send them to the program (#2939)
Fix unfocused windows in which a bell occurs not changing their border color to red until a relayout
Linux: Fix automatic detection of bold/italic faces for fonts such as IBM Plex Mono that have the regular face with a full name that is the same as the family name (#2951)
Fix a regression that broke kitten_alias (#2952)
Fix a regression that broke the move_window_to_top action (#2953)
Fix a memory leak when changing font sizes
Fix some lines in the scrollback buffer not being properly rendered after a window resize/font size change (#2619)

0.18.3 [2020-08-11]

hints kitten: Allow customizing hint colors (#2894)
Wayland: Fix a typo in the previous release that broke reading mouse cursor size (#2895)
Fix a regression in the previous release that could cause an exception during startup in rare circumstances (#2896)
Fix image leaving behind a black rectangle when switch away and back to alternate screen (#2901)
Fix one pixel misalignment of rounded corners when either the cell dimensions or the thickness of the line is an odd number of pixels (#2907)
Fix a regression that broke specifying OS window size in the session file (#2908)

0.18.2 [2020-07-28]

X11: Improve handling of multiple keyboards. Now pressing a modifier key in one keyboard and a normal key in another works (#2362). Don’t rebuild keymaps on new keyboard events that only change geometry (#2787). Better handling of multiple keyboards with incompatible layouts (#2726)
Improve anti-aliasing of triangular box drawing characters, noticeable on low-resolution screens (#2844)
Fix kitty @ send-text not working reliably when using a socket for remote control (#2852)
Implement support for box drawing rounded-corners characters (#2240)
Allow setting the class for new OS windows in a session file
When a character from the Unicode Dingbat block is followed by a space, use the extra space to render a larger version of the character (#2850)
macOS: Fix the LC_CTYPE env var being set to UTF-8 on systems in which the language and country code do not form a valid locale (#1233)
macOS: Fix cmd+plus not changing font size (#2839)
Make neighboring window selection in grid and splits layouts more intelligent (#2840)
Allow passing the current selection to kittens (#2796)
Fix pre-edit text not always being cleared with ibus input (#2862)
Allow setting the background_opacity of new OS windows created via kitty --single-instance using the kitty --override command line argument (#2806)
Fix the CSI J (Erase in display ED) escape code not removing line continued markers (#2809)
hints kitten: In linenumber mode expand paths that starts with ~ (#2822)
Fix launch --location=last not working (#2841)
Fix incorrect centering when a PUA or symbol glyph is followed by more than one space
Have the confirm_os_window_close option also apply when closing tabs with multiple windows (#2857)
Add support for legacy DECSET codes 47, 1047 and 1048 (#2871)
macOS: no longer render emoji 20% below the baseline. This caused some emoji to be cut-off and also look misaligned with very high cells (#2873)
macOS: Make the window id of OS windows available in the WINDOWID environment variable (#2877)
Wayland: Fix a regression in 0.18.0 that could cause crashes related to mouse cursors in some rare circumstances (#2810)
Fix change in window size that does not change number of cells not being reported to the kernel (#2880)

0.18.1 [2020-06-23]

macOS: Fix for diff kitten not working with python 3.8 (#2780)

0.18.0 [2020-06-20]

Allow multiple overlay windows per normal window
Add an option confirm_os_window_close to ask for confirmation when closing an OS window with multiple kitty windows.
Tall and Fat layouts: Add a mirrored option to put the full size window on the opposite edge of the screen (#2654)
Tall and Fat layouts: Add mappable actions to increase or decrease the number of full size windows (#2688)
Allow sending arbitrary signals to the current foreground process in a window using either a mapping in kitty.conf or via remote control (#2778)
Allow sending the back and forward mouse buttons to terminal applications (#2742)
Backwards incompatibility: The numbers used to encode mouse buttons for the send_mouse_event function that can be used in kittens have been changed (see Sending mouse events).
Add a new mappable quit action to quit kitty completely.
Fix marks using different colors with regexes using only a single color (#2663)
Linux: Workaround for broken Nvidia drivers for old cards (#456)
Wayland: Fix kitty being killed on some Wayland compositors if a hidden window has a lot of output (#2329)
BSD: Fix controlling terminal not being established (#2686)
Add support for the CSI REP escape code (#2702)
Wayland: Fix mouse cursor rendering on HiDPI screens (#2709)
X11: Recompile keymaps on XkbNewKeyboardNotify events (#2726)
X11: Reduce startup time by ~25% by only querying GLX for framebuffer configurations once (#2754)
macOS: Notarize the kitty application bundle (#2040)
Fix the kitty shell launched via a mapping needlessly requiring allow_remote_control to be turned on.

0.17.4 [2020-05-09]

Allow showing the name of the current layout and the number of windows in tab titles (#2634)
macOS: Fix a regression in the previous release that caused ligatures to be not be centered horizontally (#2591)
By default, double clicking no longer considers the : as part of words, see select_by_word_characters (#2602)
Fix a regression that caused clicking in the padding/margins of windows in the stack layout to switch the window to the first window (#2604)
macOS: Fix a regression that broke drag and drop (#2605)
Report modifier key state when sending wheel events to the terminal program
Fix kitty @ send-text not working with text larger than 1024 bytes when using kitty --listen-on (#2607)
Wayland: Fix OS window title not updating for hidden windows (#2629)
Fix background_tint making the window semi-transparent (#2618)

0.17.3 [2020-04-23]

Allow individually setting margins and padding for each edge (left, right, top, bottom). Margins can also be controlled per window via remote control (#2546)
Fix reverse video not being rendered correctly when using transparency or a background image (#2419)
Allow mapping arbitrary remote control commands to key presses in kitty.conf
X11: Fix crash when doing drag and drop from some applications (#2505)
Fix launch --stdin-add-formatting not working (#2512)
Update to Unicode 13.0 (#2513)
Render country flags designated by a pair of unicode codepoints in two cells instead of four.
diff kitten: New option to control the background color for filler lines in the margin (#2518)
Fix specifying options for layouts in the startup session file not working (#2520)
macOS: Fix incorrect horizontal positioning of some full-width East Asian characters (#1457)
macOS: Render multi-cell PUA characters centered, matching behavior on other platforms
Linux: Ignore keys if they are designated as layout/group/mode switch keys (#2519)
Marks: Fix marks not handling wide characters and tab characters correctly (#2534)
Add a new listen_on option in kitty.conf to set kitty --listen-on globally. Also allow using environment variables in this option (#2569).
Allow sending mouse events in kittens (#2538)
icat kitten: Fix display of 16-bit depth images (#2542)
Add ncurses specific terminfo definitions for strikethrough (#2567)
Fix a regression in 0.17 that broke displaying graphics over SSH (#2568)
Fix --title not being applied at window creation time (#2570)

0.17.2 [2020-03-29]

Add a launch --watcher option that allows defining callbacks that are called for various events in the window’s life-cycle (#2440)
Fix a regression in 0.17 that broke drawing of borders with non-minimal borders (#2474)
Hints kitten: Allow copying to primary selection as well as clipboard (#2487)
Add a new mappable action close_other_windows_in_tab to close all but the active window (#2484)
Hints kitten: Adjust the default regex used to detect line numbers to handle line+column numbers (#2268)
Fix blank space at the start of tab bar in the powerline style when first tab is inactive (#2478)
Fix regression causing incorrect rendering of separators in tab bar when defining a tab bar background color (#2480)
Fix a regression in 0.17 that broke the kitty @ launch remote command and also broke the --tab-title option when creating a new tab. (#2488)
Linux: Fix selection of fonts with multiple width variants not preferring the normal width faces (#2491)

0.17.1 [2020-03-24]

Fix cursor_underline_thickness not working (#2465)
Fix a regression in 0.17 that caused tab bar background to be rendered after the last tab as well (#2464)
macOS: Fix a regression in 0.17 that caused incorrect variants to be automatically selected for some fonts (#2462)
Fix a regression in 0.17 that caused kitty @ set-colors to require setting cursor_text_color (#2470)

0.17.0 [2020-03-24]

The Splits Layout to arrange windows in arbitrary splits (#2308)
Add support for specifying a background image, see background_image (#163 and #2326; thanks to Fredrick Brennan.)
A new background_tint option to darken the background under the text area when using background images and/or transparent windows.
Allow selection of single cells with the mouse. Also improve mouse selection to follow semantics common to most programs (#945)
New options cursor_beam_thickness and cursor_underline_thickness to control the thickness of the beam and underline cursors (#2337 and #2342)
When the application running in the terminal grabs the mouse, pass middle clicks to the application unless terminal_select_modifiers are pressed (#2368)
A new copy_and_clear_or_interrupt function (#2403)
X11: Fix arrow mouse cursor using right pointing instead of the default left pointing arrow (#2341)
Allow passing the currently active kitty window id in the launch command (#2391)
unicode input kitten: Allow pressing ctrl+tab to change the input mode (#2343)
Fix a bug that prevented using custom functions with the new marks feature (#2344)
Make the set of URL prefixes that are recognized while hovering with the mouse configurable (#2416)
Fix border/margin/padding sizes not being recalculated on DPI change (#2346)
diff kitten: Fix directory diffing with removed binary files failing (#2378)
macOS: Fix menubar title not updating on OS Window focus change (#2350)
Fix rendering of combining characters with fonts that have glyphs for precomposed characters but not decomposed versions (#2365)
Fix incorrect rendering of selection when using rectangular select and scrolling (#2351)
Allow setting WM_CLASS and WM_NAME when creating new OS windows with the launch command (launch --os-window-class)
macOS: When switching input method while a pending multi-key input is in progress, clear the pending input (#2358)
Fix a regression in the previous release that broke switching to neighboring windows in the Grid layout when there are less than four windows (#2377)
Fix colors in scrollback pager off if the window has redefined terminal colors using escape codes (#2381)
Fix selection not updating properly while scrolling (#2442)
Allow extending selections by dragging with right button pressed (#2445)
Workaround for bug in less that causes colors to reset at wrapped lines (#2381)
X11/Wayland: Allow drag and drop of text/plain in addition to text/uri-list (#2441)
Dont strip & and - from the end of URLs (#2436)
Fix @selection placeholder not working with launch command (#2417)
Drop support for python 3.5
Wayland: Fix a crash when drag and dropping into kitty (#2432)
diff kitten: Fix images lingering as blank rectangles after the kitten quits (#2449)
diff kitten: Fix images losing position when scrolling using mouse wheel/touchpad

0.16.0 [2020-01-28]

A new Mark text on screen feature that allows highlighting and scrolling to arbitrary text in the terminal window.
hints kitten: Allow pressing ctrl+shift+p>n to quickly open the selected file at the selected line in vim or a configurable editor (#2268)
Allow having more than one full height window in the tall layout (#2276)
Allow choosing OpenType features for individual fonts via the font_features option. (#2248)
Wayland: Fix a freeze in rare circumstances when having multiple OS Windows (#2307 and #1722)
Wayland: Fix window titles being set to very long strings on the order of 8KB causing a crash (#1526)
Add an option force_ltr to turn off the display of text in RTL scripts in right-to-left order (#2293)
Allow opening new tabs/windows before the current tab/window as well as after it with the launch --location option.
Add a resize_in_steps option that can be used to resize the OS window in steps as large as character cells (#2131)
When triple-click+dragging to select multiple lines, extend the selection of the first line to match the rest on the left (#2284)
macOS: Add a titlebar-only setting to hide_window_decorations to only hide the title bar (#2286)
Fix a segfault when using --debug-config with maps (#2270)
goto_tab now maps numbers larger than the last tab to the last tab (#2291)
Fix URL detection not working for urls of the form scheme:///url (#2292)
When windows are semi-transparent and all contain graphics, correctly render them. (#2310)

0.15.1 [2019-12-21]

Fix a crash/incorrect rendering when detaching a window in some circumstances (#2173)
hints kitten: Add an option kitty +kitten hints --ascending to control if the hints numbers increase or decrease from top to bottom
Fix background_opacity incorrectly applying to selected text and reverse video text (#2177)
Add a new option tab_bar_background to specify a different color for the tab bar (#2198)
Add a new option active_tab_title_template to specify a different template for active tab titles (#2198)
Fix lines at the edge of the window at certain windows sizes when drawing images on a transparent window (#2079)
Fix window not being rendered for the first time until some input has been received from child process (#2216)

0.15.0 [2019-11-27]

Add a new action detach_window that can be used to move the current window into a different tab (#1310)
Add a new action launch that unifies launching of processes in new kitty windows/tabs.
Add a new style powerline for tab bar rendering, see tab_bar_style (#2021)
Allow changing colors by mapping a keyboard shortcut to read a kitty config file with color definitions. See the FAQ for details (#2083)
hints kitten: Allow completely customizing the matching and actions performed by the kitten using your own script (#2124)
Wayland: Fix key repeat not being stopped when focus leaves window. This is expected behavior on Wayland, apparently (#2014)
When drawing unicode symbols that are followed by spaces, use multiple cells to avoid resized or cut-off glyphs (#1452)
diff kitten: Allow diffing remote files easily via ssh (#727)
unicode input kitten: Add an option kitty +kitten unicode_input --emoji-variation to control the presentation variant of selected emojis (#2139)
Add specialised rendering for a few more box powerline and unicode symbols (#2074 and #2021)
Add a new socket only mode for allow_remote_control. This makes it possible for programs running on the local machine to control kitty but not programs running over ssh.
hints kitten: Allow using named groups in the regular expression. The named groups are passed to the invoked program for further processing.
Fix a regression in 0.14.5 that caused rendering of private use glyphs with and without spaces to be identical (#2117)
Wayland: Fix incorrect scale used when first creating an OS window (#2133)
macOS: Disable mouse hiding by default as getting it to work robustly on Cocoa is too much effort (#2158)

0.14.6 [2019-09-25]

macOS: Fix a regression in the previous release that caused a crash when pressing a unprintable key, such as the POWER key (#1997)
Fix a regression in the previous release that caused kitty to not always respond to DPI changes (#1999)

0.14.5 [2019-09-23]

Implement a hack to (mostly) preserve tabs when cat-ting a file with them and then copying the text or passing screen contents to another program (#1829)
When all visible windows have the same background color, use that as the color for the global padding, instead of the configured background color (#1957)
When resetting the terminal, also reset parser state, this allows easy recovery from incomplete escape codes (#1961)
Allow mapping keys commonly found on European keyboards (#1928)
Fix incorrect rendering of some symbols when followed by a space while using the PowerLine font which does not have a space glyph (#1225)
Linux: Allow using fonts with spacing=90 in addition to fonts with spacing=100 (#1968)
Use selection foreground color for underlines as well (#1982)

0.14.4 [2019-08-31]

hints kitten: Add a kitty +kitten hints --alphabet option to control what alphabets are used for hints (#1879)
hints kitten: Allow specifying kitty +kitten hints --program multiple times to run multiple programs (#1879)
Add a kitten_alias option that can be used to alias kitten invocation for brevity and to change kitten option defaults globally (#1879)
macOS: Add an option macos_show_window_title_in to control showing the window title in the menubar/titlebar (#1837)
macOS: Allow drag and drop of text from other applications into kitty (#1921)
When running kittens, use the colorscheme of the current window rather than the configured colorscheme (#1906)
Don’t fail to start if running the shell to read the EDITOR env var fails (#1869)
Disable the liga and dlig OpenType features for broken fonts such as Nimbus Mono.
Fix a regression that broke setting background_opacity via remote control (#1895)
Fix piping PNG images into the icat kitten not working (#1920)
When the OS returns a fallback font that does not actually contain glyphs for the text, do not exhaust the list of fallback fonts (#1918)
Fix formatting attributes not reset across line boundaries when passing buffer as ANSI (#1924)

0.14.3 [2019-07-29]

Remote control: Add a command kitty @ scroll-window to scroll windows
Allow passing a !neighbor argument to the new_window mapping to open a new window next to the active window (#1746)
Document the kitty remote control protocol (#1646)
Add a new option pointer_shape_when_grabbed that allows you to control the mouse pointer shape when the terminal programs grabs the pointer (#1808)
Add an option terminal_select_modifiers to control which modifiers are used to override mouse selection even when a terminal application has grabbed the mouse (#1774)
When piping data to a child in the pipe command do it in a thread so as not to block the UI (#1708)
unicode_input kitten: Fix a regression that broke using indices to select recently used symbols.
Fix a regression that caused closing an overlay window to focus the previously focused window rather than the underlying window (#1720)
macOS: Reduce energy consumption when idle by shutting down Apple’s display link thread after 30 second of inactivity (#1763)
Linux: Fix incorrect scaling for fallback fonts when the font has an underscore that renders out of bounds (#1713)
macOS: Fix finding fallback font for private use unicode symbols not working reliably (#1650)
Fix an out of bounds read causing a crash when selecting text with the mouse in the alternate screen mode (#1578)
Linux: Use the system “bell” sound for the terminal bell. Adds libcanberra as a new dependency to play the system sound.
macOS: Fix a rare deadlock causing kitty to hang (#1779)
Linux: Fix a regression in 0.14.0 that caused the event loop to tick continuously, wasting CPU even when idle (#1782)
ssh kitten: Make argument parsing more like ssh (#1787)
When using strip_trailing_spaces do not remove empty lines (#1802)
Fix a crash when displaying very large number of images (#1825)

0.14.2 [2019-06-09]

Add an option placement_strategy to control how the cell area is aligned inside the window when the window size is not an exact multiple of the cell size (#1670)
hints kitten: Add a kitty +kitten hints --multiple-joiner option to control how multiple selections are serialized when copying to clipboard or inserting into the terminal. You can have them on separate lines, separated by arbitrary characters, or even serialized as JSON (#1665)
macOS: Fix a regression in the previous release that broke using ctrl+shift+tab (#1671)
panel kitten: Fix the contents of the panel kitten not being positioned correctly on the vertical axis
icat kitten: Fix a regression that broke passing directories to icat (#1683)
clipboard kitten: Add a kitty +kitten clipboard --wait-for-completion option to have the kitten wait till copying to clipboard is complete (#1693)
Allow using the pipe command to send screen and scrollback contents directly to the clipboard (#1693)
Linux: Disable the Wayland backend on GNOME by default as GNOME has no support for server side decorations. Can be controlled by linux_display_server.
Add an option to control the default update_check_interval when building kitty packages
Wayland: Fix resizing the window on a compositor that does not provide server side window decorations, such a GNOME or Weston not working correctly (#1659)
Wayland: Fix crash when enabling disabling monitors on sway (#1696)

0.14.1 [2019-05-29]

Add an option command_on_bell to run an arbitrary command when a bell occurs (#1660)
Add a shortcut to toggle maximized window state ctrl+shift+f10
Add support for the underscore key found in some keyboard layouts (#1639)
Fix a missing newline when using the pipe command between the scrollback and screen contents (#1642)
Fix colors not being preserved when using the pipe command with the pager history buffer (#1657)
macOS: Fix a regression that could cause rendering of a kitty window to occasionally freeze in certain situations, such as moving it between monitors or transitioning from/to fullscreen (#1641)
macOS: Fix a regression that caused cmd+v to double up in the dvorak keyboard layout (#1652)
When resizing and only a single window is present in the current layout, use that window’s background color to fill in the blank areas.
Linux: Automatically increase cell height if the font being used is broken and draws the underscore outside the bounding box (#690)
Wayland: Fix maximizing the window on a compositor that does not provide server side window decorations, such a GNOME or Weston not working (#1662)

0.14.0 [2019-05-24]

macOS: The default behavior of the Option key has changed. It now generates unicode characters rather than acting as the Alt modifier. See macos_option_as_alt.
Support for an arbitrary number of internal clipboard buffers to copy/paste from, see (Multiple copy/paste buffers)
Allow using the new private internal clipboard buffers with the copy_on_select option (#1390)
macOS: Allow opening new kitty tabs/top-level windows from Finder (#1350)
Add an option disable_ligatures to disable multi-character ligatures under the cursor to make editing easier or disable them completely (#461)
Allow creating new OS windows in session files (#1514)
Allow setting OS window size in session files
Add an option tab_switch_strategy to control which tab becomes active when the current tab is closed (#1524)
Allow specifying a value of none for the selection_foreground which will cause kitty to not change text color in selections (#1358)
Make live resizing of OS windows smoother and add an option resize_draw_strategy to control what is drawn while a resize is in progress.
macOS: Improve handling of IME extended input. Compose characters are now highlighted and the IME panel moves along with the text (#1586). Also fixes handling of delete key in Chinese IME (#1461)
When a window is closed, switch focus to the previously active window (if any) instead of picking the previous window in the layout (#1450)
icat kitten: Add support for displaying images at http(s) URLs (#1340)
A new option strip_trailing_spaces to optionally remove trailing spaces from lines when copying to clipboard.
A new option tab_bar_min_tabs to control how many tabs must be present before the tab-bar is shown (#1382)
Automatically check for new releases and notify when an update is available, via the system notification facilities. Can be controlled by update_check_interval (#1342)
macOS: Fix cmd+period key not working (#1318)
macOS: Add an option macos_show_window_title_in_menubar to not show the current window title in the menu-bar (#1066)
macOS: Workaround for cocoa bug that could cause the mouse cursor to become hidden in other applications in rare circumstances (#1218)
macOS: Allow assigning only the left or right Option key to work as the Alt key. See macos_option_as_alt for details (#1022)
Fix using remote control to set cursor text color causing errors when creating new windows (#1326)
Fix window title for minimized windows not being updated (#1332)
macOS: Fix using multi-key sequences to input text ignoring the first few key presses if the sequence is aborted (#1311)
macOS: Add a number of common macOS keyboard shortcuts
macOS: Reduce energy consumption by not rendering occluded windows
Fix scrollback pager history not being cleared when clearing the main scrollback buffer (#1387)
macOS: When closing a top-level window only switch focus to the previous kitty window if it is on the same workspace (#1379)
macOS: Fix sync_to_monitor not working on Mojave.
macOS: Use the system cursor blink interval by default cursor_blink_interval.
Wayland: Use the kitty Wayland backend by default. Can be switched back to using XWayland by setting the environment variable: KITTY_DISABLE_WAYLAND=1
Add a no-append setting to clipboard_control to disable the kitty copy concatenation protocol extension for OSC 52.
Update to using the Unicode 12 standard
Unicode input kitten: Allow using the arrow keys in code mode to go to next and previous unicode symbol.
macOS: Fix specifying initial window size in cells not working correctly on Retina screens (#1444)
Fix a regression in version 0.13.0 that caused background colors of space characters after private use unicode characters to not be respected (#1455)
Only update the selected text to clipboard when the selection is finished, not continuously as it is updated. (#1460)
Allow setting active_border_color to none to not draw a border around the active window (#805)
Use negative values for mouse_hide_wait to hide the mouse cursor immediately when pressing a key (#1534)
When encountering errors in kitty.conf report them to the user instead of failing to start.
Allow the user to control the resize debounce time via resize_debounce_time.
Remote control: Make the kitten @ set-font-size command more capable. It can now increment font size and reset it. It also only acts on the active top-level window, by default (#1581)
When launching child processes set the PWD environment variable (#1595)
X11: use the window manager’s native full-screen implementation when making windows full-screen (#1605)
Mouse selection: When extending by word, fix extending selection to non-word characters not working well (#1616)

0.13.3 [2019-01-19]

icat kitten: Add a --stdin option to control if image data is read from STDIN (#1308)
hints kitten: Start hints numbering at one instead of zero by default. Added an option --hints-offset to control it. (#1289)
Fix a regression in the previous release that broke using background for cursor_text_color (#1288)
macOS: Fix dragging kitty window tabs in traditional full screen mode causing crashes (#1296)
macOS: Ensure that when running from a bundle, the bundle kitty exe is preferred over any kitty in PATH (#1280)
macOS: Fix a regression that broke mapping of ctrl+tab (#1304)
Add a list of user-created kittens to the docs
Fix a regression that broke changing mouse wheel scroll direction with negative wheel_scroll_multiplier values in full-screen applications like vim (#1299)
Fix background_opacity not working with pure white backgrounds (#1285)
macOS: Fix “New OS Window” dock action not working when kitty is not focused (#1312)
macOS: Add aliases for close window and new tab actions that conform to common Apple shortcuts for these actions (#1313)
macOS: Fix some kittens causing 100% CPU usage

0.13.2 [2019-01-04]

Add a new option tab_title_template to control how tab titles are formatted. In particular the template can be used to display the tab number next to the title (#1223)
Report the current foreground processes as well as the original child process, when using kitty @ ls
Use the current working directory of the foreground process for the *_with_cwd actions that open a new window with the current working directory.
Add a new copy_or_interrupt action that can be mapped to kbd:ctrl+c. It will copy if there is a selection and interrupt otherwise (#1286)
Fix setting background_opacity causing window margins/padding to be slightly different shade from background (#1221)
Handle keyboards with a “+” key (#1224)
Fix Private use Unicode area characters followed by spaces at the end of text not being rendered correctly (#1210)
macOS: Add an entry to the dock menu to open a new OS window (#1242)
macOS: Fix scrolling very slowly with wheel mice not working (#1238)
Fix changing cursor_text_color via remote control not working (#1229)
Add an action to resize windows that can be mapped to shortcuts in kitty.conf (#1245)
Fix using the new_tab !neighbor action changing the order of the non-neighboring tabs (#1256)
macOS: Fix momentum scrolling continuing when changing the active window/tab (#1267)

0.13.1 [2018-12-06]

Fix passing input via the pipe action to a program without a window not working.
Linux: Fix a regression in the previous release that caused automatic selection of bold/italic fonts when using aliases such as “monospace” to not work (#1209)
Fix resizing window smaller and then restoring causing some wrapped lines to not be properly unwrapped (#1206)

0.13.0 [2018-12-05]

Add an option scrollback_pager_history_size to tell kitty to store extended scrollback to use when viewing the scrollback buffer in a pager (#970)
Modify the kittens sub-system to allow creating custom kittens without any user interface. This is useful for creating more complex actions that can be bound to key presses in kitty.conf. See doc:kittens/custom. (#870)
Add a new nth_window action that can be used to go to the nth window and also previously active windows, using negative numbers. Similarly, goto_tab now accepts negative numbers to go to previously active tabs (#1040)
Allow hiding the tab bar completely, by setting tab_bar_style to hidden. (#1014)
Allow private use unicode characters to stretch over more than a single neighboring space (#1036)
Add a new touch_scroll_multiplier option to modify the amount scrolled by high precision scrolling devices such as touchpads (#1129)
icat kitten: Implement reading image data from STDIN, if STDIN is not connected to a terminal (#1130)
hints kitten: Insert trailing spaces after matches when using the --multiple option. Also add a separate --add-trailing-space option to control this behavior (#1132)
Fix the *_with_cwd actions using the cwd of the overlay window rather than the underlying window’s cwd (#1045)
Fix incorrect key repeat rate on wayland (#1055)
macOS: Fix drag and drop of files not working on Mojave (#1058)
macOS: Fix IME input for East Asian languages (#910)
macOS: Fix rendering frames-per-second very low when processing large amounts of input in small chunks (#1082)
macOS: Fix incorrect text sizes calculated when using an external display that is set to mirror the main display (#1056)
macOS: Use the system default double click interval (#1090)
macOS: Fix touch scrolling sensitivity low on retina screens (#1112)
Linux: Fix incorrect rendering of some fonts when hinting is disabled at small sizes (#1173)
Linux: Fix match rules used as aliases in Fontconfig configuration not being respected (#1085)
Linux: Fix a crash when using the GNU Unifont as a fallback font (#1087)
Wayland: Fix copying from hidden kitty windows hanging (#1051)
Wayland: Add support for the primary selection protocol implemented by some compositors (#1095)
Fix expansion of env vars not working in the env directive (#1075)
Fix mouse_hide_wait only taking effect after an event such as cursor blink or key press (#1073)
Fix the set_background_opacity action not working correctly (#1147)
Fix second cell of emoji created using variation selectors not having the same attributes as the first cell (#1109)
Fix focusing neighboring windows in the grid layout with less than 4 windows not working (#1115)
Fix ctrl+shift+special key not working in normal and application keyboard modes (#1114)
Add a terminfo entry for full keyboard mode.
Fix incorrect text-antialiasing when using very low background opacity (#1005)
When double or triple clicking ignore clicks if they are “far” from each other (#1093)
Follow xterm’s behavior for the menu key (#597)
Fix hover detection of URLs not working when hovering over the first colon and slash characters in short URLs (#1201)

0.12.3 [2018-09-29]

macOS: Fix kitty window not being rendered on macOS Mojave until the window is moved or resized at least once (#887)
Unicode input: Fix an error when searching for the string ‘fir’ (#1035)

0.12.2 [2018-09-24]

A new last_used_layout function that can be mapped to a shortcut to switch to the previously used window layout (#870)
New neighboring_window and move_window functions to switch to neighboring windows in the current layout, and move them around, similar to window movement in vim (#916)
A new pipe function that can be used to pipe the contents of the screen and scrollback buffer to any desired program running in a new window, tab or overlay window. (#933)
Add a new kitty --start-as command line flag to start kitty full-screen/maximized/minimized. This replaces the --start-in-fullscreen flag introduced in the previous release (#935)
When mapping the new_tab action allow specifying that the tab should open next to the current tab instead of at the end of the tabs list (#979)
macOS: Add a new macos_thicken_font to make text rendering on macs thicker, which makes it similar to the result of sub-pixel antialiasing (#950)
macOS: Add an option macos_traditional_fullscreen to make full-screening of kitty windows much faster, but less pretty. (#911)
Fix a bug causing incorrect line ordering when viewing the scrollback buffer if the scrollback buffer is full (#960)
Fix drag-scrolling not working when the mouse leaves the window confines (#917)
Workaround for broken editors like nano that cannot handle newlines in pasted text (#994)
Linux: Ensure that the python embedded in the kitty binary build uses UTF-8 mode to process command-line arguments (#924)
Linux: Handle fonts that contain monochrome bitmaps (such as the Terminus TTF font) (#934)
Have the kitty --title flag apply to all windows created using kitty --session (#921)
Revert change for backspacing of wide characters in the previous release, as it breaks backspacing in some wide character aware programs (#875)
Fix kitty @set-colors not working for tab backgrounds when using the fade tabbar style (#937)
macOS: Fix resizing semi-transparent windows causing the windows to be invisible during the resize (#941)
Linux: Fix window icon not set on X11 for the first OS window (#961)
macOS: Add an macos_custom_beam_cursor option to use a special mouse cursor image that can be seen on both light and dark backgrounds (#359)
Remote control: Fix the focus_window command not focusing the top-level OS window of the specified kitty window (#1003)
Fix using focus_follows_mouse causing text selection with the mouse to malfunction when using multiple kitty windows (#1002)

0.12.1 [2018-09-08]

Add a new --start-in-fullscreen command line flag to start kitty in full screen mode (#856)
macOS: Fix a character that cannot be rendered in any font causing font fallback for all subsequent characters that cannot be rendered in the main font to fail (#799)
Linux: Do not enable IME input via ibus unless the GLFW_IM_MODULE=ibus environment variable is set. IME causes key processing latency and even missed keystrokes for many people, so it is now off by default.
Fix backspacing of wide characters in wide-character unaware programs not working (#875)
Linux: Fix number pad arrow keys not working when Numlock is off (#857)
Wayland: Implement support for clipboard copy/paste (#855)
Allow mapping shortcuts using the raw key code from the OS (#848)
Allow mapping of individual key-presses without modifiers as shortcuts
Fix legacy invocation of icat as kitty icat not working (#850)
Improve rendering of wavy underline at small font sizes (#853)
Fix a regression in 0.12.0 that broke dynamic resizing of layouts (#860)
Wayland: Allow using the kitty --class command line flag to set the app id (#862)
Add completion of the kitty command for the fish shell (#829)
Linux: Fix XCompose rules with no defined symbol not working (#880)
Linux: Fix crash with some Nvidia drivers when creating tabs in the first top level-window after creating a second top-level window. (#873)
macOS: Diff kitten: Fix syntax highlighting not working because of a bug in the 0.12.0 macOS package

0.12.0 [2018-09-01]

Preserve the mouse selection even when the contents of the screen are scrolled or overwritten provided the new text does not intersect the selected lines.
Linux: Implement support for Input Method Extensions (multilingual input using standard keyboards) via IBus (#469)
Implement completion for the kitty command in bash and zsh. See Shell integration.
Render the text under the cursor in a fixed color, configurable via the option cursor_text_color (#126)
Add an option env to set environment variables in child processes from kitty.conf
Add an action to the clear_terminal function to scroll the screen contents into the scrollback buffer (#1113)
Implement high precision scrolling with the trackpad on platforms such as macOS and Wayland that implement it. (#819)
macOS: Allow scrolling window contents using mouse wheel/trackpad even when the window is not the active window (#729)
Remote control: Allow changing the current window layout with a new kitten @ goto-layout command (#845)
Remote control: Allow matching windows by the environment variables of their child process as well
Allow running kittens via the remote control system (#738)
Allow enabling remote control in only some kitty windows
Add a keyboard shortcut to reset the terminal (ctrl+shift+delete). It takes parameters so you can define your own shortcuts to clear the screen/scrollback also (#747)
Fix one-pixel line appearing at window edges at some window sizes when displaying images with background opacity enabled (#741)
diff kitten: Fix error when right hand side file is binary and left hand side file is text (#752)
kitty @ new-window: Add a new option kitten @ new-window --window-type to create top-level OS windows (#770)
macOS: The focus_follows_mouse option now also works across top-level kitty OS windows (#754)
Fix detection of URLs in HTML source code (URLs inside quotes) (#785)
Implement support for emoji skin tone modifiers (#787)
Round-trip the zwj unicode character. Rendering of sequences containing zwj is still not implemented, since it can cause the collapse of an unbounded number of characters into a single cell. However, kitty at least preserves the zwj by storing it as a combining character.
macOS: Disable the custom mouse cursor. Using a custom cursor fails on dual GPU machines. I give up, Apple users will just have to live with the limitations of their choice of OS. (#794)
macOS: Fix control+tab key combination not working (#801)
Linux: Fix slow startup on some systems caused by GLFW searching for joysticks. Since kitty does not use joysticks, disable joystick support. (#830)

0.11.3 [2018-07-10]

Draw only the minimum borders needed for inactive windows. That is only the borders that separate the inactive window from a neighbor. Note that setting a non-zero window margin overrides this and causes all borders to be drawn. The old behavior of drawing all borders can be restored via the draw_minimal_borders setting in kitty.conf. (#699)
macOS: Add an option macos_window_resizable to control if kitty top-level windows are resizable using the mouse or not (#698)
macOS: Use a custom mouse cursor that shows up well on both light and dark backgrounds (#359)
macOS: Workaround for switching from fullscreen to windowed mode with the titlebar hidden causing window resizing to not work. (#711)
Fix triple-click to select line not working when the entire line is filled (#703)
When dragging to select with the mouse “grab” the mouse so that if it strays into neighboring windows, the selection is still updated (#624)
When clicking in the margin/border area of a window, map the click to the nearest cell in the window. Avoids selection with the mouse failing when starting the selection just outside the window.
When drag-scrolling stop the scroll when the mouse button is released.
Fix a regression in the previous release that caused pasting large amounts of text to be duplicated (#709)

0.11.2 [2018-07-01]

Linux: Allow using XKB key names to bind shortcuts to keys not supported by GLFW (#665)
kitty shell: Ignore failure to read readline history file. Happens if the user migrates their kitty cache directory between systems with incompatible readline implementations.
macOS: Fix an error in remote control when using --listen-on (#679)
hints kitten: Add a kitty +kitten hints --multiple option to select multiple items (#687)
Fix pasting large amounts of text very slow (#682)
Add an option single_window_margin_width to allow different margins when only a single window is visible in the layout (#688)
Add a kitty --hold command line option to stay open after the child process exits (#667)
diff kitten: When triggering a search scroll to the first match automatically
kitty --debug-font-fallback also prints out what basic fonts were matched
When closing a kitty window reset the mouse cursor to its default shape and ensure it is visible (#655).
Remote control: Speed-up reading of command responses
Linux installer: Fix installer failing on systems with python < 3.5
Support “-T” as an alias for “--title” (#659)
Fix a regression in the previous release that broke using --debug-config with custom key mappings (#695)

0.11.1 [2018-06-17]

diff kitten: Implement searching for text in the diff (#574)
Add an option startup_session to kitty.conf to specify a default startup session (#641)
Add a command line option kitty --wait-for-single-instance-window-close to make kitty --single-instance wait for the closing of the newly opened window before quitting (#630)
diff kitten: Allow theming the selection background/foreground as well
diff kitten: Display CRLF line endings using the unicode return symbol instead of <d> as it is less intrusive (#638)
diff kitten: Fix default foreground/background colors not being restored when kitten quits (#637)
Fix kitten @ set-colors --all not working when more than one window present (#632)
Fix a regression that broke the legacy increase/decrease_font_size actions
Clear scrollback on reset (#631)

0.11.0 [2018-06-12]

A new tab bar style “fade” in which each tab’s edges fade into the background. See tab_bar_style and tab_fade for details. The old look can be restored by setting tab_bar_style to separator.
Pre-compiled binaries with all bundled dependencies for Linux (#595)
A new kitten to create dock panels on X11 desktops showing the output from arbitrary terminal programs.
Reduce data sent to the GPU per render by 30% (commit: 8dea5b3e3)
Implement changing the font size for individual top level (OS) windows (#408)
When viewing the scrollback in less using ctrl+shift+h and kitty is currently scrolled, position the scrollback in less to match kitty’s scroll position. (#148)
ssh kitten: Support all SSH options. It can now be aliased directly to ssh for convenience. (#591)
icat kitten: Add kitty +kitten icat --print-window-size to easily detect the window size in pixels from scripting languages (#581)
hints kitten: Allow selecting hashes from the terminal with ctrl+shift+p>h useful for git commits. (#604)
Allow specifying initial window size in number of cells in addition to pixels (#436)
Add a setting to control the margins to the left and right of the tab-bar (#584)
When closing a tab switch to the last active tab instead of the right-most tab (#585)
Wayland: Fix kitty not starting when using wl_roots based compositors (#157)
Wayland: Fix mouse wheel/touchpad scrolling in opposite direction to other apps (#594)
macOS: Fix the new OS window keyboard shortcut (ctrl+shift+n) not working if no kitty window currently has focus. (#524)
macOS: Keep kitty running even when the last window is closed. This is in line with how applications are supposed to behave on macOS (#543). There is a new option (macos_quit_when_last_window_closed) to control this.
macOS: Add macOS standard shortcuts for copy, paste and new OS window (⌘+C, ⌘+V, ⌘+N)
Add a config option (editor) to set the EDITOR kitty uses (#580)
Add a config option (x11_hide_window_decorations) to hide window decorations under X11/Wayland (#607)
Add an option to @set-window-title to make the title change non-permanent (#592)
Add support for the CSI t escape code to query window and cell sizes (#581)
Linux: When using layouts that map the keys to non-ascii characters, map shortcuts using the ascii equivalents, from the default layout. (#606)
Linux: Fix fonts not being correctly read from TrueType Collection (.ttc) files (#577)
Fix inactive_text_alpha also applying to the tab bar (#612)
hints kitten: Fix a regression that caused some blank lines to be not be displayed.
Linux: Include a man page and the HTML docs when building the linux-package
Remote control: Fix kitty @ sometimes failing to read the response from kitty. (#614)
Fix kitty @ set-colors not working with the window border colors. (#623)
Fix a regression in 0.10 that caused incorrect rendering of the status bar in irssi when used inside screen. (#621)

0.10.1 [2018-05-24]

Add a kitten to easily ssh into servers that automatically copies the terminfo files over. kitty +kitten ssh myserver.
diff kitten: Make the keyboard shortcuts configurable (#563)
Allow controlling background_opacity via either keyboard shortcuts or remote control. Note that you must set dynamic_background_opacity yes in kitty.conf first. (#569)
diff kitten: Add keybindings to scroll by page
diff kitten: Fix incorrect syntax highlighting for a few file formats such as yaml
macOS: Fix regression that caused the macos_option_as_alt setting to always be disabled for all OS windows in a kitty instance after the first window (#571)
Fix Ctrl+Alt+Space not working in normal and application keyboard modes (#562)

0.10.0 [2018-05-21]

A diff kitten to show side-by-side diffs with syntax highlighting and support for images. See diff kitten.
Make windows in the various kitty layouts manually resizable. See Layouts for details.
Implement support for the SGR faint escape code to make text blend into the background (#446).
Make the hints kitten a little smarter (commit: ad1109b6f) so that URLs that stretch over multiple lines are detected. Also improve detection of surrounding brackets/quotes.
Make the kitty window id available as the environment variable KITTY_WINDOW_ID (#532).
Add a “fat” layout that is similar to the “tall” layout but vertically oriented.
Expand environment variables in config file include directives
Allow programs running in kitty to read/write from the clipboard (commit: 889ca7791). By default only writing is allowed. This feature is supported in many terminals, search for OSC 52 clipboard to find out more about using it.
Fix moving cursor outside a defined page area incorrectly causing the cursor to be placed inside the page area. Caused incorrect rendering in neovim, in some situations (#542).
Render a couple more powerline symbols directly, bypassing the font (#550).
Fix ctrl+alt+<special> not working in normal and application keyboard (#548).
Partial fix for rendering Right-to-left languages like Arabic. Rendering of Arabic is never going to be perfect, but now it is at least readable.
Fix Ctrl+backspace acting as plain backspace in normal and application keyboard modes (#538).
Have the paste_from_selection action paste from the clipboard on platforms that do not have a primary selection such as Wayland and macOS (#529)
Fix cursor_stop_blinking_after=0 not working (#530)

0.9.1 [2018-05-05]

Show a bell symbol on the tab if a bell occurs in one of the windows in the tab and the window is not the currently focused window
Change the window border color if a bell occurs in an unfocused window. Can be disabled by setting the bell_border_color to be the same as the inactive_border_color.
macOS: Add support for dead keys
Unicode input: When searching by name search for prefix matches as well as whole word matches
Dynamically allocate the memory used for the scrollback history buffer. Reduces startup memory consumption when using very large scrollback buffer sizes.
Add an option to not request window attention on bell.
Remote control: Allow matching windows by number (visible position).
macOS: Fix changing tab title and kitty shell not working
When triple-clicking select all wrapped lines belonging to a single logical line.
hints kitten: Detect bracketed URLs and don’t include the closing bracket in the URL.
When calling pass_selection_to_program use the current directory of the child process as the cwd of the program.
Add macos_hide_from_tasks option to hide kitty from the macOS task switcher
macOS: When the macos_titlebar_color is set to background change the titlebar colors to match the current background color of the active kitty window
Add a setting to clear all shortcuts defined up to that point in the config file(s)
Add a setting (kitty_mod) to change the modifier used by all the default kitty shortcuts, globally
Fix Shift+function key not working
Support the F13 to F25 function keys
Don’t fail to start if the user deletes the hintstyle key from their fontconfig configuration.
When rendering a private use unicode codepoint and a space as a two cell ligature, set the foreground colors of the space cell to match the colors of the first cell. Works around applications like powerline that use different colors for the two cells.
Fix passing @text to other programs such as when viewing the scrollback buffer not working correctly if kitty is itself scrolled up.
Fix window focus gained/lost events not being reported to child programs when switching windows/tabs using the various keyboard shortcuts.
Fix tab title not changing to reflect the window title when switching between different windows in a tab
Ignore -e if it is specified on the command line. This is for compatibility with broken software that assumes terminals should run with an -e option to execute commands instead of just passing the commands as arguments.

0.9.0 [2018-04-15]

A new kitty command shell to allow controlling kitty via commands. Press ctrl+shift+escape to run the shell.
The hints kitten has become much more powerful. Now in addition to URLs you can use it to select word, paths, filenames, lines, etc. from the screen. These can be inserted into the terminal, copied to clipboard or sent to external programs.
Linux: Switch to libxkbcommon for keyboard handling. It allows kitty to support XCompose and dead keys and also react to keyboard remapping/layout change without needing a restart.
Add support for multiple-key-sequence shortcuts
A new remote control command set-colors to change the current and/or configured colors.
When double-clicking to select a word, select words that continue onto the next/prev line as well.
Add an include directive for the config files to read multiple config files
Improve mouse selection for windows with padding. Moving the mouse into the padding area now acts as if the mouse is over the nearest cell.
Allow setting all 256 terminal colors in the config file
Fix using kitty --single-instance to open a new window in a running kitty instance, not respecting the --directory flag
URL hints: Exclude trailing punctuation from URLs
URL hints: Launch the browser from the kitty parent process rather than the hints kitten. Fixes launching on some systems where xdg-open doesn’t like being run from a kitten.
Allow using rectangle select mode by pressing shift in addition to the rectangle select modifiers even when the terminal program has grabbed the mouse.

0.8.4 [2018-03-31]

Fix presence of XDG_CONFIG_DIRS and absence of XDG_CONFIG_HOME preventing kitty from starting
Revert change in last release to cell width calculation. Instead just clip the right edges of characters that overflow the cell by at most two pixels

0.8.3 [2018-03-29]

Fix a regression that broke the visual bell and invert screen colors escape code
Allow double-click and triple-click + drag to extend selections word at a time or line at a time
Add a keyboard shortcut to set the tab title
Fix setting window title to empty via OSC escape code not working correctly
Linux: Fix cell width calculation incorrect for some fonts (cell widths are now calculated by actually rendering bitmaps, which is slower but more accurate)
Allow specifying a system wide kitty config file, for all users
Add a --debug-config command line flag to output data about the system and kitty configuration.
Wayland: Fix auto-repeat of keys not working

0.8.2 [2018-03-17]

Allow extending existing selections by right clicking
Add a configurable keyboard shortcut and remote command to set the font size to a specific value
Add an option to have kitty close the window when the main processes running in it exits, even if there are still background processes writing to that terminal
Add configurable keyboard shortcuts to switch to a specific layout
Add a keyboard shortcut to edit the kitty config file easily
macOS: Fix restoring of window size not correct on Retina screens
macOS: Add a facility to specify command line arguments when running kitty from the GUI
Add a focus-tab remote command
Fix screen not being refreshed immediately after moving a window.
Fix a crash when getting the contents of the scrollback buffer as text

0.8.1 [2018-03-09]

Extend kitty’s remote control feature to work over both UNIX and TCP sockets, so now you can control kitty from across the internet, if you want to.
Render private use unicode characters that are followed by a space as a two character ligature. This fixes rendering for applications that misuse private-use characters to display square symbols.
Fix Unicode emoji presentation variant selector causing new a fallback font instance to be created
Fix a rare error that prevented the Unicode input kitten from working sometimes
Allow using Ctrl+Alt+letter in legacy keyboard modes by outputting them as Ctrl+letter and Alt+letter. This matches other terminals’ behavior.
Fix cursor position off-by-one on horizontal axis when resizing the terminal
Wayland: Fix auto-repeat of keys not working
Wayland: Add support for window decorations provided by the Wayland shell
macOS: Fix URL hints not working
macOS: Fix shell not starting in login mode on some computers
macOS: Output errors into console.app when running as a bundle

0.8.0 [2018-02-24]

A framework for kittens, that is, small terminal programs designed to run inside kitty and extend its capabilities. Examples include unicode input and selecting URLs with the keyboard.
Input arbitrary unicode characters by pressing Ctrl+Shift+u. You can choose characters by name, by hex code, by recently used, etc. There is even and editable Favorites list.
Open URLs using only the keyboard. kitty has a new “hints mode”. Press Ctrl+Shift+e and all detected URLs on the screen are highlighted with a key to press to open them. The facility is customizable so you can change what is detected as a URL and which program is used to open it.
Add an option to change the titlebar color of kitty windows on macOS
Only consider Emoji characters with default Emoji presentation to be two cells wide. This matches the standard. Also add support for the Unicode Emoji variation presentation selector.
Prevent video tearing during high speed scrolling by syncing draws to the monitor’s refresh rate. There is a new configuration option to control this sync_to_monitor.
When displaying only a single window, use the default background color of the window (which can be changed via escape codes) as the color for the margin and padding of the window.
Add some non standard terminfo capabilities used by neovim and tmux.
Fix large drop in performance when using multiple top-level windows on macOS
Fix save/restore of window sizes not working correctly.
Remove option to use system wcwidth(). Now always use a wcwidth() based on the Unicode standard. Only sane way.
Fix a regression that caused a few ligature glyphs to not render correctly in rare circumstances.
Browsing the scrollback buffer now happens in an overlay window instead of a new window/tab.

0.7.1 [2018-01-31]

Add an option to adjust the width of character cells
Fix selecting text with the mouse in the scrollback buffer selecting text from the line above the actually selected line
Fix some italic fonts having the right edge of characters cut-off, unnecessarily

0.7.0 [2018-01-24]

Allow controlling kitty from the shell prompt/scripts. You can open/close/rename windows and tabs and even send input to specific windows. See the README for details.
Add option to put tab bar at the top instead of the bottom
Add option to override the default shell
Add “Horizontal” and “Vertical” window layouts
Sessions: Allow setting titles and working directories for individual windows
Option to copy to clipboard on mouse select
Fix incorrect reporting of mouse move events when using the SGR protocol
Make alt+backspace delete the previous word
Take the mouse wheel multiplier option in to account when generating fake key scroll events
macOS: Fix closing top-level window does not transfer focus to other top-level windows.
macOS: Fix alt+arrow keys not working when disabling the macos_option_as_alt config option.
kitty icat: Workaround for bug in ImageMagick that would cause some images to fail to display at certain sizes.
Fix rendering of text with ligature fonts that do not use dummy glyphs
Fix a regression that caused copying of the selection to clipboard to only copy the visible part of the selection
Fix incorrect handling of some unicode combining marks that are not re-ordered
Fix handling on non-BMP combining characters
Drop the dependency on libunistring

0.6.1 [2017-12-28]

Add an option to fade the text in inactive windows
Add new actions to open windows/tabs/etc. with the working directory set to the working directory of the current window.
Automatically adjust cell size when DPI changes, for example when kitty is moved from one monitor to another with a different DPI
Ensure underlines are rendered even for fonts with very poor metrics
Fix some emoji glyphs not colored on Linux
Internal wcwidth() implementation is now auto-generated from the unicode standard database
Allow configuring the modifiers to use for rectangular selection with the mouse.
Fix incorrect minimum wayland version in the build script
Fix a crash when detecting a URL that ends at the end of the line
Fix regression that broke drawing of hollow cursor when window loses focus

0.6.0 [2017-12-18]

Support background transparency via the background_opacity option. Provided that your OS/window manager supports transparency, you can now have kitty render pixels that have only the default background color as semi-transparent.
Support multiple top level (OS) windows. These windows all share the sprite texture cache on the GPU, further reducing overall resource usage. Use the shortcut ctrl+shift+n to open a new top-level window.
Add support for a daemon mode using the --single-instance command line option. With this option you can have only a single kitty instance running. All future invocations simply open new top-level windows in the existing instance.
Support colored emoji
Use CoreText instead of FreeType to render text on macOS
Support running on the “low power” GPU on dual GPU macOS machines
Add a new “grid” window layout
Drop the dependency on glfw (kitty now uses a modified, bundled copy of glfw)
Add an option to control the audio bell volume on X11 systems
Add a command line switch to set the name part of the WM_CLASS window property independently.
Add a command line switch to set the window title.
Add more options to customize the tab-bar’s appearance (font styles and separator)
Allow drag and drop of files into kitty. On drop kitty will paste the file path to the running program.
Add an option to control the underline style for URL highlighting on hover
X11: Set the WINDOWID environment variable
Fix middle and right buttons swapped when sending mouse events to child processes
Allow selecting in a rectangle by holding down Ctrl+Alt while dragging with the mouse.

0.5.1 [2017-12-01]

Add an option to control the thickness of lines in box drawing characters
Increase max. allowed ligature length to nine characters
Fix text not vertically centered when adjusting line height
Fix unicode block characters not being rendered properly
Fix shift+up/down not generating correct escape codes
Image display: Fix displaying images taller than two screen heights not scrolling properly

0.5.0 [2017-11-19]

Add support for ligature fonts such as Fira Code, Hasklig, etc. kitty now uses harfbuzz for text shaping which allow it to support advanced OpenType features such as contextual alternates/ligatures/combining glyphs/etc.
Make it easy to select fonts by allowing listing of monospace fonts using: kitty list-fonts
Add an option to have window focus follow mouse
Add a keyboard shortcut (ctrl+shift+f11) to toggle fullscreen mode
macOS: Fix handling of option key. It now behaves just like the alt key on Linux. There is an option to make it type unicode characters instead.
Linux: Add support for startup notification on X11 desktops. kitty will now inform the window manager when its startup is complete.
Fix shell prompt being duplicated when window is resized
Fix crash when displaying more than 64 images in the same session
Add support for colons in SGR color codes. These are generated by some applications such as neovim when they mistakenly identify kitty as a libvte based terminal.
Fix mouse interaction not working in apps using obsolete mouse interaction protocols
Linux: no longer require glew as a dependency

0.4.2 [2017-10-23]

Fix a regression in 0.4.0 that broke custom key mappings
Fix a regression in 0.4.0 that broke support for non-QWERTY keyboard layouts
Avoid using threads to reap zombie child processes. Also prevent kitty from hanging if the open program hangs when clicking on a URL.

0.4.0 [2017-10-22]

Support for drawing arbitrary raster graphics (images) in the terminal via a new graphics protocol. kitty can draw images with full 32-bit color using both ssh connections and files/shared memory (when available) for better performance. The drawing primitives support alpha blending and z-index. Images can be drawn both above and below text. See Terminal graphics protocol. for details.
Refactor kitty’s internals to make it even faster and more efficient. The CPU usage of kitty + X server while doing intensive tasks such as scrolling a file continuously in less has been reduced by 50%. There are now two configuration options repaint_delay and input_delay you can use to fine tune kitty’s performance vs CPU usage profile. The CPU usage of kitty + X when scrolling in less is now significantly better than most (all?) other terminals. See Performance.
Hovering over URLs with the mouse now underlines them to indicate they can be clicked. Hold down Ctrl+Shift while clicking to open the URL.
Selection using the mouse is now more intelligent. It does not add blank cells (i.e. cells that have no content) after the end of text in a line to the selection.
The block cursor in now fully opaque but renders the character under it in the background color, for enhanced visibility.
Allow combining multiple independent actions into a single shortcut
Add a new shortcut to pass the current selection to an external program
Allow creating shortcuts to open new windows running arbitrary commands. You can also pass the current selection to the command as an arguments and the contents of the screen + scrollback buffer as stdin to the command.

sw.kovidgoyal.net

Kitty 0.50

Detailed list of changes

0.50.0 [2026-11-03]

0.49.2 [2026-10-01]

0.49.1 [2026-09-24]

0.49.0 [2026-09-21]

0.48.2 [2026-07-30]

0.48.1 [2026-07-24]

0.48.0 [2026-07-18]

0.47.4 [2026-06-15]

0.47.3 [2026-06-12]

0.47.2 [2026-06-07]

0.47.1 [2026-05-28]

0.47.0 [2026-05-19]

0.46.2 [2026-03-21]

0.46.1 [2026-03-16]

0.46.0 [2026-03-11]

0.45.0 [2025-12-24]

0.44.0 [2025-11-03]

0.43.1 [2025-10-01]

0.43.0 [2025-09-28]

0.42.2 [2025-07-16]

0.42.1 [2025-05-17]

0.42.0 [2025-05-11]

0.41.1 [2025-04-03]

0.41.0 [2025-03-29]

0.40.1 [2025-03-18]

0.40.0 [2025-03-08]

0.39.1 [2025-02-01]

0.39.0 [2025-01-16]

0.38.1 [2024-12-26]

0.38.0 [2024-12-15]

0.37.0 [2024-10-30]

0.36.4 [2024-09-27]

0.36.3 [2024-09-25]

0.36.2 [2024-09-06]

0.36.1 [2024-08-24]

0.36.0 [2024-08-17]

0.35.2 [2024-06-22]

0.35.1 [2024-05-31]

0.35.0 [2024-05-25]

0.34.1 [2024-04-19]

0.34.0 [2024-04-15]

0.33.1 [2024-03-21]

0.33.0 [2024-03-12]

0.32.2 [2024-02-12]

0.32.1 [2024-01-26]

0.32.0 [2024-01-19]

0.31.0 [2023-11-08]

0.30.1 [2023-10-05]

0.30.0 [2023-09-18]

0.29.2 [2023-07-27]

0.29.1 [2023-07-17]

0.29.0 [2023-07-10]

0.28.1 [2023-04-21]

0.28.0 [2023-04-15]

0.27.1 [2023-02-07]

0.27.0 [2023-01-31]

0.26.5 [2022-11-07]

0.26.4 [2022-10-17]

0.26.3 [2022-09-22]

0.26.2 [2022-09-05]

0.26.1 [2022-08-30]

0.26.0 [2022-08-29]

0.25.2 [2022-06-07]

0.25.1 [2022-05-26]

0.25.0 [2022-04-11]

0.24.4 [2022-03-03]

0.24.3 [2022-02-28]

0.24.2 [2022-02-03]

0.24.1 [2022-01-06]

0.24.0 [2022-01-04]

0.23.1 [2021-08-17]

0.23.0 [2021-08-16]

0.22.2 [2021-08-02]

0.22.1 [2021-07-31]

0.22.0 [2021-07-26]

0.21.2 [2021-06-28]

0.21.1 [2021-06-14]