kc3-lang/libxkbcommon/test/data/symbols/multiple-groups

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• Hash : 7c4c718b
  Author :
  Date : 2024-09-30T06:13:38
  

  Allow only the first group in symbols sections when using RMLVO
  
  Currently `xkb_keymap_num_layouts` may return a greater number than the
  number of layouts configured using RMLVO, because we allow symbols
  sections to define various groups per key.
  
  This is unintuitive and kind of buggy: groups should be added via rules
  by setting an explicit `:n` modifier.
  
  Fix: when parsing a keymap using RMLVO resolution:
  - Get the expected layouts count from the resulting KcCGST.
  - Drop the groups after the first one in included symbols sections. This
    will ensure that a symbol section can only define one group per key.
  
  Notes:
  - Compiling a keymap string directly is unaffected.
  - RMLVO resolution may still produce more groups than the input layouts.
    Indeed, some legacy rules in xkeyboard-config rely on this to insert
    automatically a US layout before the given non-Latin one, resulting
    in two layouts while only one was given.
  

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• test/data/symbols/multiple-groups

• // Define a key with various groups at the same time.
  // Use RALT because the option `lv3:ralt_alt` used to have a similar
  // (buggy) implementation, that triggered an unexpected result
  // for `xkb_keymap_num_layouts` and `xkb_keymap_num_layouts_for_key`.
  default partial modifier_keys
  xkb_symbols "1" {
    key <RALT> {
      type[Group1]="ONE_LEVEL",
      type[Group2]="ONE_LEVEL",
      type[Group3]="ONE_LEVEL",
      type[Group4]="ONE_LEVEL",
      symbols[Group1] = [ a ],
      symbols[Group2] = [ b ],
      symbols[Group3] = [ c ],
      symbols[Group4] = [ d ]
    };
  };
  
  xkb_symbols "2" {
  	key <RALT> {
  	  type[Group1]="ONE_LEVEL",
  	  type[Group2]="ONE_LEVEL",
  	  type[Group3]="ONE_LEVEL",
  	  type[Group4]="ONE_LEVEL",
  	  symbols[Group1] = [ a ],
  	  symbols[Group2] = [ B ],
  	  symbols[Group3] = [ C ],
  	  symbols[Group4] = [ D ]
  	};
        };
  

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