kc3-lang/libxkbcommon/changes/api/497.bugfix.md

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• Hash : 05ba96db
  Author :
  Date : 2024-08-20T16:41:38
  

  rules: Fix wild card handling
  
  The handling of wild card `*` is different in libxkbfile and X server:
  wild card matches empty strings for model and option but not for layout
  nor variant, while in libxkbcommon wild cards always match empty strings.
  
  See:
  - https://gitlab.freedesktop.org/xorg/lib/libxkbfile/-/blob/bf985c68acb1244f51ec91414532a2347fbc1c4c/src/maprules.c#L687
  - https://gitlab.freedesktop.org/xorg/lib/libxkbfile/-/blob/bf985c68acb1244f51ec91414532a2347fbc1c4c/src/maprules.c#L712
  
  The difference of handling between the components is unfortunately not
  documented, but we should follow the behavior of the original
  implementations for consistency.
  
  - Fixed by implementing the same behavior than libxkbfile.
  - Added tests and fixed failing tests.
  - Improve the documentation of rules to highlight the special behavior.
  

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Source

• changes/api/497.bugfix.md

• rules: Fix handling of wild card `*` to match the behavior of `libxkbfile`.
  Previously `*` would match any value, even empty one. Now:
  - For `model` and `options`: *always* match.
  - For `layout` and `variant`: match any *non-empty* value.
  

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