* feat: switch IME to ASCII in prefix mode on Windows
Extend switch_ascii_input_source_in_prefix to Windows: detect IME state
via WM_IME_CONTROL and toggle to ASCII with SendInput for the Korean IME.
Other IME languages are detected and left unchanged.
refs #1802
* docs: clarify Windows (Korean IME) support for prefix ASCII switching
Follow-up to the Windows prefix ASCII switch, which extended
switch_ascii_input_source_in_prefix to Windows but left the surrounding
text describing macOS only.
- Settings row label: "(macOS)" -> "(macOS/Windows)", plus its test.
- Generalize the Windows behavior wording to "switches the IME to
English (ASCII) input" in the config-reference.json entry and the
model.rs doc comment, and state that Windows support is currently
limited to the Korean IME.
- Add a :::caution aside noting the Korean-IME-only limitation to the
en/ja/zh preview docs, keeping the three translations in sync.
refs #1802
* fix: warn when prefix IME toggle injection is incomplete
SendInput can queue fewer events than requested (for example when blocked
by UIPI), which would otherwise leave the IME silently stuck in ASCII or
native mode. Log a warning with the sent and expected counts so the failure
is diagnosable.
refs #1802
* fix: guard prefix IME restore and correct open-status naming
Address maintainer review on the Windows prefix ASCII switch:
- Restore only when safe: store the foreground window at switch time and,
before toggling back, require that the same window is still focused and
the IME is still in English. This stops restore from toggling another
application or overriding a manual return to Hangul during prefix mode.
- Report injection success from send_vk_tap and only arm restoration when
the initial toggle landed; on a partial injection retry the dropped
key-up so a key is not left logically held down. The injection policy is
split into send_vk_tap_with(inject) so the success, partial, and failure
branches are unit-tested without the real SendInput.
- Correct the WM_IME_CONTROL sub-command naming: 0x0005 is IMC_GETOPENSTATUS
(IME open state), not IMC_GETCONVERSIONMODE. Behavior is unchanged; the
constant, comments, and tests now describe the open-status read.
refs #1802
* fix: bound IME open-status read with a timeout
The prefix IME switch reads IMC_GETOPENSTATUS via WM_IME_CONTROL, which
crosses into the terminal-emulator process. A plain SendMessageW would block
herdr's client thread until that process responds, indefinitely if it hangs.
Read through SendMessageTimeoutW with SMTO_ABORTIFHUNG and a short timeout
instead; on timeout the switch is skipped and restore does nothing, so a hung
host process can no longer freeze prefix-mode entry or exit.
refs #1802
* fix: preserve windows ime restoration after partial injection
refs #1802
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Co-authored-by: Ogulcan Celik <ogulcancelik@gmail.com>
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