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kc3-lang/libxkbcommon/src

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  • Author : Pierre Le Marre
    Date : 2025-06-23 18:15:18
    Hash : c4f4ba41
    Message : state: Fix modifier and group latch Prior to this commit, the sequences: - 1. latch A ↓ 2. latch B ↓ 3. latch B ↑ 4. latch A ↑ - 1. latch A ↓ 2. latch B ↓ 3. latch A ↑ 4. latch B ↑ would result in only B being latched, because the XKB protocol specifies that latches are triggered only if keys are *sequentially* tapped, i.e. a strict sequence of press and release of each key. It seems an unnecessary limitation: - `SlowKeys` and `XkbAX_TwoKeys` are the proper accessibility features to control accidental key presses, not latches nor `StickyKeys`. - Latches are also used outside their original accessibility role. A user may activate multiple latch keys simultaneously: - same hand: two latch keys being close to each other; - different hand: two keys being activated independently. Changed the latching behavior so that the rules used to break a latch are the same than those used to prevent it. Depressing and releasing two latching keys simultaneously will now activate both latches, as expected. Since this is a breaking change, it is enabled only by the keymap format `XKB_KEYMAP_FORMAT_TEXT_V2`.