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Every message typed on an Android phone lost its last character. An Android soft keyboard commits the last typed character and sends the Enter key in ONE InputConnection transaction, so the committed-text `input` event and the Enter keydown are both processed before any zero-delay timer runs. The orphaned-input recovery from #388 resolved its candidate only on such a timer, and that lost the character twice over: * ORDER — xterm emits `\r` synchronously from the Enter keydown, and the local-echo composer submits `pendingText` right there. The recovered character arrived one macrotask too late to be part of the prompt. * LOSS — that same `\r` bumps the canonical counter, so by the time the candidate resolved, `canonicalCount > snapshot` read as "xterm spoke for this keystroke" and stood the recovery down. The character was not merely late, it was dropped. Drain pending candidates synchronously at the next keydown instead, from xterm's custom key handler, which runs before xterm processes that key. The counter then still holds the value it had while the candidate's own keystroke was current, so the stand-down decision is made against the right keystroke, and the recovered byte reaches the composer ahead of whatever the new key emits. The timer stays as the fallback for a keystroke with no key after it. Physical keyboards are unaffected: there the timer has already resolved the candidate long before the next key arrives. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>