- New keymaps::RU: 53-entry Cyrillic layout (ЙЦУКЕН/GOST).
- Extends KeymapKind enum with RU variant (value 6).
- From<usize> clamp returns US for any out-of-range value.
- Display/FromStr parse 'ru' to KeymapKind::RU.
- KeymapData::new dispatches to the RU table.
- Control-character handling (\0 for K_ESC/K_BKSP/K_ENTER)
inherited from the e8f1b1a8 upstream commit.
Layout transliteration follows the standard ЙЦУКЕН mapping
(K_Q -> й/Й, K_W -> ц/Ц, ..., K_DOT -> ./,). Shift produces
uppercase Cyrillic. Backslash/pipe key is shared with US at
K_BACKSLASH. Per Linux 7.x drivers/tty/vt/keymap.c Russian
table conventions.
- e8f1b1a8 'Do not send TextInputEvent for control characters': set
K_ESC, K_BKSP, K_ENTER to '\0' in all keymaps (US, GB, Dvorak, Azerty,
Bepo, IT). Control characters are now produced via fbcond's
scancode handler (0x1C -> \n, 0x0E -> \x7F) instead of via the
character field. This pairs with the fbcond 0x1C Enter fix.
- c3789b4e 'only perform a single write and assert the amount written':
add assertion in write_event that the kernel returned the full
expected byte count. Prevents silent short writes in the input
event path.
Per Phase 1.1 of local/docs/SYSTEM-STABILITY-AND-UPSTREAM-SYNC-PLAN.md.