Daneel cd288e8c76 Fix three VoiceOver bugs: crash, cursor sync, word announcement ...

Bug 1 (crash): postEchoAreaAnnouncementIfNeeded called Fbuffer_string()
without block_input, allowing timer events to interleave with Lisp
calls and corrupt buffer state.  Added block_input/unblock_input via
record_unwind_protect_void.  Also removed unpaired unblock_input()
in postCompletionAnnouncementForBuffer (patch 0003) that became a
double-unblock after patch 0008 added block_input + unwind protect.

Bug 2 (cursor sync): VoiceOver browse cursor did not follow Emacs
keyboard cursor because SelectedTextChanged with discontiguous
direction alone is not sufficient for VoiceOver to re-anchor.  Added
NSAccessibilityFocusedUIElementChangedNotification post when Emacs
moves the cursor across a line boundary, forcing VoiceOver to re-query
accessibilitySelectedTextRange.

Bug 3 (word off-by-one): Evil w (next-word) read the previous word
instead of the destination word.  VO auto-speech from
SelectedTextChanged with direction=next+granularity=word reads the
traversed word, not the arrived-at word.  Added explicit word
announcement (like char moves) that reads the word AT the new cursor
position using whitespace-delimited word boundary scan.

2026-03-02 10:42:54 +01:00

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