Kitty Terminal Emulator

changelog: https://sw.kovidgoyal.net/kitty/changelog/#detailed-list-of-changes

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](Fix a regression ))
• 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)