CHANGELOG.rst

Changelog

kitty is a feature full, cross-platform, fast, GPU based terminal emulator.

version 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.

version 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

version 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

version 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

version 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.

version 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

version 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

version 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.

version 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 https://github.com/kovidgoyal/kitty/blob/master/graphics-protocol.asciidoc 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 https://github.com/kovidgoyal/kitty#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.