patches: 0008 restored to confirmed working version (3e5fe81)

Pure version: direct UAZoomChangeFocus, specpdl_ref, re-entrance
guard, buffer switch + unbind_to. No window announcement suppression
(all attempts broke VoiceOver focus tracking or Zoom).

patches/0008-ns-announce-child-frame-completion-candidates-for-Vo.patch

@@ -1,4 +1,4 @@
-From 80da4658204a10b8df5305743806aa26eef10478 Mon Sep 17 00:00:00 2001
+From e11d0688f119046827cd1895008d3a93e22f6d0d Mon Sep 17 00:00:00 2001
 From: Martin Sukany <martin@sukany.cz>
 Date: Sat, 28 Feb 2026 16:01:29 +0100
 Subject: [PATCH 2/2] ns: announce child frame completion candidates for
@@ -16,20 +16,25 @@ find the selected candidate.  Reuse ns_ax_face_is_selected from
 the overlay patch to identify "current", "selected", and
 "selection" faces.
 
-Safety:
-- record_unwind_current_buffer / set_buffer_internal_1 to switch to
-  the child frame buffer for Fbuffer_substring_no_properties.
-- Re-entrance guard (accessibilityUpdating) before child frame dispatch.
-- BUF_MODIFF gating prevents redundant scans.
-- WINDOWP, BUFFERP validation for partially initialized frames.
-- Buffer size limit (10000 chars) skips non-completion child frames.
-
-Clear the child frame window title to minimize VoiceOver's automatic
-window-appeared announcement.
+Safety measures:
+- Use record_unwind_current_buffer / set_buffer_internal_1 to
+  temporarily switch to the child frame buffer before calling
+  Fbuffer_substring_no_properties (which operates on current_buffer).
+  All return paths call unbind_to to restore the original buffer.
+- The re-entrance guard (accessibilityUpdating) MUST come before the
+  child frame dispatch, because Lisp calls in the scan function can
+  trigger redisplay.
+- BUF_MODIFF gating prevents redundant scans on every redisplay tick
+  and provides a secondary re-entrance guard.
+- Frame state validation (WINDOWP, BUFFERP) handles partially
+  initialized child frames during creation.
+- Buffer size limit (10000 chars) skips non-completion child frames
+  such as eldoc documentation or which-key popups.
 
 Announce via AnnouncementRequested to NSApp with High priority.
-Use direct UAZoomChangeFocus because the child frame renders
-independently --- its ns_update_end runs after the parent's
+Use direct UAZoomChangeFocus (not the overlayZoomRect flag used
+for minibuffer overlay completion) because the child frame renders
+independently --- its ns_update_end runs after the parent frame's
 draw_window_cursor, so the last Zoom call wins.
 
 * src/nsterm.h (EmacsView): Add announceChildFrameCompletion.
@@ -39,8 +44,8 @@ draw_window_cursor, so the last Zoom call wins.
 handler for FRAME_PARENT_FRAME frames, under re-entrance guard.
 ---
  src/nsterm.h |   1 +
- src/nsterm.m | 211 ++++++++++++++++++++++++++++++++++++++++++++++++++-
- 2 files changed, 211 insertions(+), 1 deletion(-)
+ src/nsterm.m | 205 ++++++++++++++++++++++++++++++++++++++++++++++++++-
+ 2 files changed, 205 insertions(+), 1 deletion(-)
 
 diff --git a/src/nsterm.h b/src/nsterm.h
 index 5c15639..21b2823 100644
@@ -55,7 +60,7 @@ index 5c15639..21b2823 100644
  @end
  
 diff --git a/src/nsterm.m b/src/nsterm.m
-index d13c5c7..1c94c20 100644
+index d13c5c7..092bc11 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
 @@ -7066,6 +7066,110 @@ ns_ax_selected_overlay_text (struct buffer *b,
@@ -263,7 +268,7 @@ index d13c5c7..1c94c20 100644
  - (void)postAccessibilityUpdates
  {
    NSTRACE ("[EmacsView postAccessibilityUpdates]");
-@@ -12309,11 +12500,29 @@ ns_ax_collect_windows (Lisp_Object window, EmacsView *view,
+@@ -12309,11 +12500,23 @@ ns_ax_collect_windows (Lisp_Object window, EmacsView *view,
  
    /* Re-entrance guard: VoiceOver callbacks during notification posting
       can trigger redisplay, which calls ns_update_end, which calls us
@@ -277,15 +282,9 @@ index d13c5c7..1c94c20 100644
  
 +  /* Child frame completion popup (Corfu, Company-box, etc.).
 +     Child frames don't participate in the accessibility tree;
-+     announce the selected candidate directly.
-+
-+     Clear the window title to minimize VoiceOver's automatic
-+     window-appeared announcement (says "window" instead of the
-+     full frame name).  The element stays in the accessibility
-+     tree so focus tracking and Zoom continue to work.  */
++     announce the selected candidate directly.  */
 +  if (FRAME_PARENT_FRAME (emacsframe))
 +    {
-+      [[self window] setTitle:@""];
 +      [self announceChildFrameCompletion];
 +      accessibilityUpdating = NO;
 +      return;