Reset Stdin to Come From Keyboard Again
Frequently Asked Questions#
Some special symbols are rendered pocket-sized/truncated in kitty?#
The number of cells a Unicode character takes up are controlled by the Unicode standard. All characters are rendered in a single jail cell unless the Unicode standard says they should be rendered in two cells. When a symbol does not fit, it will either exist rescaled to be smaller or truncated (depending on how much extra space it needs). This is often different from other terminals which simply let the graphic symbol overflow into neighboring cells, which is fine if the neighboring cell is empty, but looks terrible if it is not.
Some programs, like Powerline, vim with fancy gutter symbols/status-bar, etc. use Unicode characters from the private use area to correspond symbols. Often these symbols are wide and should exist rendered in two cells. Withal, since private utilize area symbols all take their width set to one in the Unicode standard, kitty renders them either smaller or truncated. The exception is if these characters are followed past a space or empty cell in which case kitty makes apply of the extra cell to render them in two cells. This behavior can be turned off for specific symbols using narrow_symbols .
Using a color theme with a background color does not work well in vim?#
First make sure you lot take not changed the TERM environs variable, information technology should be xterm-kitty . vim uses background color erase fifty-fifty if the terminfo file does not incorporate the bce adequacy. This is a bug in vim. Yous can piece of work around information technology by calculation the post-obit to your vimrc:
Run into here for why kitty does not support background color erase.
I become errors about the concluding beingness unknown or opening the terminal failing when SSHing into a dissimilar calculator?#
This happens because the kitty terminfo files are not available on the server. Y'all can ssh in using the following control which will automatically copy the terminfo files to the server:
kitty +kitten ssh myserver This ssh kitten takes all the same command line arguments every bit ssh, you can allonym it to something small in your crush's rc files to avoid having to blazon information technology each time:
allonym s = "kitty +kitten ssh" If the ssh kitten fails, use the following one-liner instead (it is slower as it needs to ssh into the server twice, but will work with about servers):
infocmp -a xterm-kitty | ssh myserver tic -x -o \~/.terminfo /dev/stdin If you are backside a proxy (like Balabit) that prevents this, or tic comes with macOS that does not support reading from STDIN, you must redirect the 1st command to a file, copy that to the server and run tic manually. If you connect to a server, embedded or Android system that doesn't take tic , copy over your local file terminfo to the other system every bit ~/.terminfo/ten/xterm-kitty .
Actually, the correct solution for this is to convince the OpenSSH maintainers to accept ssh do this automatically, if possible, when connecting to a server, so that all terminals piece of work transparently.
If the server is running FreeBSD, or another system that relies on termcap rather than terminfo, you will need to convert the terminfo file on your local automobile by running (on local motorcar with kitty):
The output of this control is the termcap description, which should be appended to /usr/share/misc/termcap on the remote server. Then run the post-obit control to utilise your change (on the server):
cap_mkdb /usr/share/misc/termcap Keys such as arrow keys, backspace, delete, home/terminate, etc. exercise not work when using su or sudo?#
Make sure the TERM environment variable, is xterm-kitty . And either the TERMINFO environment variable points to a directory containing 10/xterm-kitty or that file is under ~/.terminfo/x/ .
For macOS, yous may too demand to put that file under ~/.terminfo/78/ :
mkdir -p ~/.terminfo/{ 78,10} ln -snf ../x/xterm-kitty ~/.terminfo/78/xterm-kitty tic -10 -o ~/.terminfo " $KITTY_INSTALLATION_DIR /terminfo/kitty.terminfo" Note that sudo might remove TERMINFO. Then setting it at the beat out prompt can be too tardily, because command line editing may non be reinitialized. In that case you can either ask sudo to fix it or if that is non supported, insert an env command earlier starting the trounce, or, if not possible, after sudo start another Shell providing the right terminfo path:
sudo … TERMINFO = $HOME/.terminfo bash -i sudo … env TERMINFO = $HOME/.terminfo fustigate -i TERMINFO =/dwelling/ORIGINALUSER/.terminfo exec bash -i You can configure sudo to preserve TERMINFO by running sudo visudo and adding the following line:
Defaults env_keep += "TERM TERMINFO" If you have double width characters in your prompt, you may also need to explicitly set a UTF-8 locale, similar:
export LANG =en_US.UTF-8 LC_ALL =en_US.UTF-viii How practise I change the colors in a running kitty instance?#
The easiest style to do it is to use the themes kitten, to choose a new color theme. Merely run:
And choose your theme from the listing.
You can also ascertain keyboard shortcuts to prepare colors, for example:
map f1 set_colors --configured /path/to/some/config/file/colors.conf Or you tin enable remote command for kitty and employ kitty @ prepare-colors. The shortcut mapping technique has the same syntax as the remote command control, for details, see kitty @ set-colors.
Additionally, You can use the OSC terminal escape codes to prepare colors. Examples of using OSC escape codes to fix colors:
Modify the default foreground color: printf '\x1b]ten;#ff0000\x1b\\' Change the default background color: printf '\x1b]11;blue\x1b\\' Change the cursor colour: printf '\x1b]12;blue\x1b\\' Change the selection background color: printf '\x1b]17;blueish\x1b\\' Change the selection foreground color: printf '\x1b]19;blueish\x1b\\' Change the nth color ( 0 - 255 ): printf '\x1b]four;due north;light-green\x1b\\' You tin apply various syntaxes/names for color specifications in the to a higher place examples. See XParseColor for full details.
If a ? is given rather than a color specification, kitty will respond with the electric current value for the specified color.
How do I specify command line options for kitty on macOS?#
Apple does not want you to apply control line options with GUI applications. To workaround that limitation, kitty will read control line options from the file <kitty config dir>/macos-launch-services-cmdline when it is launched from the GUI, i.east. by clicking the kitty awarding icon or using open -a kitty . Note that this file is only read when running via the GUI.
You can, of course, besides run kitty from a last with command line options, using: /Applications/kitty.app/Contents/MacOS/kitty .
And within kitty itself, y'all tin can always run kitty using just kitty equally information technology cleverly adds itself to the PATH .
I catted a binary file and now kitty is hung?#
Never output unknown binary information directly into a terminal.
Terminals have a single channel for both information and control. Certain bytes are control codes. Some of these control codes are of arbitrary length, and so if the binary data you output into the terminal happens to contain the starting sequence for one of these control codes, the final will hang waiting for the endmost sequence. Press ctrl+shift+delete to reset the terminal.
If you do want to cat unknown information, utilise cat -v .
kitty is non able to utilize my favorite font?#
kitty achieves its stellar operation by caching blastoff masks of each rendered character on the GPU, and rendering them all in parallel. This means information technology is a strictly character cell based brandish. As such it tin can utilise just monospace fonts, since every prison cell in the grid has to be the same size. Furthermore, it needs fonts to exist freely resizable, so information technology does not support bitmapped fonts.
Annotation
If you are trying to employ a font patched with NERD font symbols, dont do that every bit patching destroys fonts. There is no need, simply install the standalone NERD font (the file NerdFontsSymbolsOnly.zip from the NERD font releases page). kitty should pick up symbols from it automatically, and you can tell it to exercise and so explicitly in case it doesnt with the symbol_map directive:
symbol_map U+23FB-U+23FE,U+2665,U+26A1,U+2B58,U+E000-U+E00A,U+E0A0-U+E0A3,U+E0B0-U+E0C8,U+E0CA,U+E0CC-U+E0D2,U+E0D4,U+E200-U+E2A9,U+E300-U+E3E3,U+E5FA-U+E62F,U+E700-U+E7C5,U+F000-U+F2E0,U+F300-U+F31C,U+F400-U+F4A9,U+F500-U+F8FF Symbols Nerd Font If your font is not listed in kitty +list-fonts information technology means that it is not monospace or is a bitmapped font. On Linux you tin can listing all monospace fonts with:
fc-list : family spacing outline scalable | grep -e spacing = 100 -e spacing = 90 | grep -e outline =Truthful | grep -e scalable =True Notation that the spacing belongings is calculated by fontconfig based on actual glyph widths in the font. If for some reason fontconfig concludes your favorite monospace font does not take spacing=100 you tin can override information technology by using the post-obit ~/.config/fontconfig/fonts.conf :
<?xml version = "1.0"?> <!DOCTYPE fontconfig Organization "fonts.dtd"> <fontconfig> <friction match target = "browse"> <test name = "family"> <cord>Your Font Family Name</string> </test> <edit proper noun = "spacing"> <int>100</int> </edit> </lucifer> </fontconfig> After creating (or modifying) this file, yous may demand to run the following command to rebuild your fontconfig cache:
And then, the font will exist available in kitty +list-fonts .
How can I assign a single global shortcut to bring upwardly the kitty terminal?#
Bringing up applications on a single key printing is the chore of the window manager/desktop surround. For ways to do it with kitty (or indeed any terminal) in unlike environments, see hither.
I do non like the kitty icon!#
There are many alternate icons available, click on an icon to visit its homepage:
On macOS you can alter the icon by following the steps:
-
Find
kitty.appin the Applications folder, select it and press ⌘+i -
Drag
kitty.icnsonto the application icon in the kitty info pane -
Delete the icon cache and restart Dock:
$ rm /var/folders/*/*/*/com.apple.dock.iconcache; killall Dock
How do I map central presses in kitty to dissimilar keys in the last program?#
This is accomplished by using map with send_text in kitty.conf . For example:
map alt+s send_text normal,application \x 13 This maps alt+due south to ctrl+s . To figure out what bytes to employ for the send_text you can apply the show_key kitten. Run:
So printing the key yous want to emulate.
How do I open a new window or tab with the aforementioned working directory as the current window?#
In kitty.conf add the following:
map f1 launch --cwd=current map f2 launch --cwd=current --blazon=tab Pressing F1 volition open up a new kitty window with the same working directory as the current window. The launch command is very powerful, explore its documentation.
Things behave differently when running kitty from system launcher vs. from another terminal?#
This volition exist because of environment variables. When you run kitty from the system launcher, it gets a default ready of organisation environment variables. When you run kitty from some other terminal, you lot are really running it from a shell, and the beat'south rc files volition have setup a whole different ready of environment variables which kitty volition now inherit.
You lot need to brand sure that the environment variables you lot define in your beat's rc files are either also defined system broad or via the env directive in kitty.conf . Common environs variables that cause bug are those related to localization, such as LANG, LC_* and loading of configuration files such every bit XDG_*, KITTY_CONFIG_DIRECTORY .
To see the environment variables that kitty sees, you can add the following mapping to kitty.conf :
map f1 show_kitty_env_vars then pressing F1 will show you the environment variables kitty sees.
This trouble is almost mutual on macOS, as Apple makes it exceedingly difficult to setup environment variables system-wide, and so people end up putting them in all sorts of places where they may or may not work.
I am using tmux and accept a trouble#
First, last multiplexers are a bad idea, do non use them, if at all possible. kitty contains features that do all of what tmux does, but ameliorate, with the exception of remote persistence (#391). If y'all still want to utilize tmux, read on.
Image brandish volition not piece of work, see tmux issue.
Using ancient versions of tmux such every bit 1.8 will cause gibberish on screen when pressing keys (#3541).
If you are using tmux with multiple terminals or you start it under one concluding and and so switch to some other and these terminals have different TERM variables, tmux volition break. You will demand to restart it as tmux does not back up multiple terminfo definitions.
If you lot use any of the advanced features that kitty has innovated, such as styled underlines, desktop notifications, extended keyboard back up, etc. they may or may not piece of work, depending on the whims of tmux's maintainer, your version of tmux, etc.
I opened and airtight a lot of windows/tabs and top shows kitty's memory usage is very high?#
top is not a proficient fashion to mensurate process memory usage. That is because on modernistic systems, when allocating memory to a process, the C library functions will typically classify retentivity in large blocks, and give the process chunks of these blocks. When the process frees a chunk, the C library will non necessarily release the underlying cake back to the OS. So even though the application has released the retentivity, tiptop will notwithstanding merits the process is using it.
To cheque for memory leaks, instead use a tool similar valgrind . Run:
PYTHONMALLOC =malloc valgrind --tool=massif kitty Now open up lots of tabs/windows, generate lots of output using tools like find/aye etc. Then shut all but one window. Do some random work for a few seconds in that window, peradventure run yes or find again. Then quit kitty and run:
massif-visualizer massif.out.* You will see the allocations graph goes up when y'all opened the windows, then goes back downwards when y'all airtight them, indicating there were no memory leaks.
For those interested, you lot can get a similar profile out of valgrind as you get with summit by adding --pages-as-heap=yeah and then you volition meet that memory allocated in malloc is non freed in free. This can exist farther refined if you use glibc` as your C library past setting the environment variable MALLOC_MMAP_THRESHOLD_=64 . This will cause complimentary to actually gratuitous memory allocated in sizes of more than 64 bytes. With this prepare, retentiveness usage volition climb loftier, then fall when endmost windows, but not fall all the way back. The remaining used retentivity can be investigated using valgrind once more, and it will come from arenas in the GPU drivers and the per thread arenas glibc'south malloc maintains. These also allocate retentivity in big blocks and dont release it back to the Os immediately.
Why does kitty sometimes start slowly on my Linux system?#
kitty takes no longer (within 100ms) to start than other similar GPU last emulators, (and may be faster than some). If kitty occasionally takes a long time to first, information technology could be a power management consequence with the graphics card. On a multi-GPU system (which many modern laptops are, having a ability efficient GPU that'south congenital into the processor and a power hungry dedicated ane that'due south usually off), fifty-fifty if the answer of the GPU will only exist "don't use me".
For example, if you take a system with an AMD CPU and an NVIDIA GPU, and you know that you desire to use the lower powered bill of fare to save bombardment life and because kitty does not require a powerful GPU to function, you lot tin can cull not to wake up the dedicated bill of fare, which has been reported on at least one system (#4292) to take ≈ii seconds, by running kitty as:
MESA_LOADER_DRIVER_OVERRIDE =radeonsi __EGL_VENDOR_LIBRARY_FILENAMES =/usr/share/glvnd/egl_vendor.d/50_mesa.json kitty The correct command will depend on your situation and hardware. __EGL_VENDOR_LIBRARY_FILENAMES instructs the GL dispatch library to use libEGL_mesa.so and ignore libEGL_nvidia.so besides available on the system, which will wake the NVIDIA carte du jour during device enumeration. MESA_LOADER_DRIVER_OVERRIDE also assures that Mesa won't offer any NVIDIA menu during enumeration, and will instead just utilise /lib/dri/radeonsi_dri.so.
Source: https://sw.kovidgoyal.net/kitty/faq/
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