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Hash : a1e595e7
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Date : 2025-04-11T11:13:25
rules: Fix merging KcCGST values in layout order When using layout index ranges (e.g. special indexes “any” or “later”), the rules still match following the order in the rules file, so layout indexes may match without following their natural order. So the resulting KcCGST value should not be merged with the output until reaching the end of the rule set. Because the rule set may also involve options, it may match multiple times for the *same* layout index. So these multiple matches should not be merged together either, until reaching the end of the rule set. When reaching the end of the rule set, for each KcCGST component the pending values are then merged: for each layout, for each KcCGST value in the corresponding sequence, merge with the output. --- Example: ! model = symbols * = pc ! layout[any] option = symbols C 1 = +c1:%i C 2 = +c2:%i B 3 = skip B 4 = +b:%i The result of RMLVO {layout: "A,B,C", options: "4,3,2,1"} is: symbols = pc+b:2+c1:3+c2:3 - `skip` was dropped because it has no explicit merge mode; - although every rule was matched in order, the resulting order of the symbols follows the order of the layouts, so `+b` appears before `+c1` and `+c2`. - the relative order of the options for layout C follows the order within the rule set, not the order of RMLVO. Before this commit, the result would have been: symbols = pc+c1:3+c2:3+b:2
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README.md
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libxkbcommon
libxkbcommon is a keyboard keymap compiler and support library which processes a reduced subset of keymaps as defined by the XKB (X Keyboard Extension) specification. It also contains a module for handling Compose and dead keys and a separate registry library for listing available keyboard layouts.
Quick Guide
- Introduction to XKB: to learn the essentials of XKB.
- User-configuration: instructions to add a custom layout or option.
- Quick Guide: introduction on how to use this library.
Building
libxkbcommon is built with Meson:
meson setup build meson compile -C build meson test -C build # Run the tests.To build for use with Wayland, you can disable X11 support while still using the X11 keyboard configuration resource files thusly:
meson setup build \ -Denable-x11=false \ -Dxkb-config-root=/usr/share/X11/xkb \ -Dx-locale-root=/usr/share/X11/locale meson compile -C buildComplete list of user options
@include meson_options.txtAPI
While libxkbcommon’s API is somewhat derived from the classic XKB API as found in
X11/extensions/XKB.hand friends, it has been substantially reworked to expose fewer internal details to clients.See the API Documentation.
Dataset
libxkbcommon does not distribute a keyboard layout dataset itself, other than for testing purposes. The most common dataset is xkeyboard-config, which is used by all current distributions for their X11 XKB data. Further information on xkeyboard-config is available at its homepage and at its repository.
The dataset for Compose is distributed in libX11, as part of the X locale data.
Relation to X11
See Compatibility notes.
Development
An extremely rudimentary homepage can be found at
https://xkbcommon.orgxkbcommon is maintained in git at
https://github.com/xkbcommon/libxkbcommonPatches are always welcome, and may be sent to either xorg-devel@lists.x.org or wayland-devel@lists.freedesktop.org or in a GitHub pull request.
Bug reports (and usage questions) are also welcome, and may be filed at GitHub.
The maintainers are:
Credits
Many thanks are due to Dan Nicholson for his heroic work in getting xkbcommon off the ground initially.