patches: fix duplicate EmacsAccessibilityBuffer(InteractiveSpans)

Stub @implementation added in 0001 was never removed when 0004
added the full implementation, causing Clang to error:
  reimplementation of category 'InteractiveSpans'

Remove the stub block in 0004 (interactive span elements for Tab).

config.el

@@ -423,29 +423,6 @@ Skip for beamer exports — beamer uses adjustbox on plain tabular."
 ;;; ORG MODE — CUSTOM BEHAVIOR
 ;;; ============================================================
 
-;; Agenda: position cursor at task name (after TODO keyword and priority)
-(defun my/org-agenda-all-keywords ()
-  "Return list of all org todo keyword strings (without shortcut suffixes)."
-  (let (result)
-    (dolist (seq org-todo-keywords result)
-      (dolist (kw (cdr seq))
-        (unless (equal kw "|")
-          (push (replace-regexp-in-string "(.*" "" kw) result))))))
-
-(defun my/org-agenda-goto-task-name (&rest _)
-  "Move cursor to the task name on the current org-agenda line."
-  (when (get-text-property (line-beginning-position) 'org-hd-marker)
-    (beginning-of-line)
-    (let* ((eol (line-end-position))
-           (kw-re (regexp-opt (my/org-agenda-all-keywords) 'words)))
-      (when (re-search-forward kw-re eol t)
-        (skip-chars-forward " \t")
-        (when (looking-at "\\[#.\\][ \t]+")
-          (goto-char (match-end 0)))))))
-
-(advice-add 'org-agenda-next-line     :after #'my/org-agenda-goto-task-name)
-(advice-add 'org-agenda-previous-line :after #'my/org-agenda-goto-task-name)
-
 ;; Also trigger on post-command-hook in agenda buffers (catches Evil j/k,
 ;; super-agenda navigation, and any other motion commands)
 (add-hook 'org-agenda-mode-hook

patches/0000-ns-integrate-with-macOS-Zoom-for-cursor-tracking.patch

@@ -1,7 +1,7 @@
-From 0470786c91eb4a464d8580387b83a4a8d4e4f8eb Mon Sep 17 00:00:00 2001
+From 2bce9ba4ad500eabad619e684ba319b58f9b1fca Mon Sep 17 00:00:00 2001
 From: Martin Sukany <martin@sukany.cz>
-Date: Sat, 28 Feb 2026 22:39:35 +0100
+Date: Wed, 4 Mar 2026 15:23:53 +0100
-Subject: [PATCH] ns: integrate with macOS Zoom for cursor tracking
+Subject: [PATCH 1/9] ns: integrate with macOS Zoom for cursor tracking
 
 Inform macOS Zoom of the text cursor position so the zoomed viewport
 follows keyboard focus in Emacs.  Also track completion candidates so
@@ -28,8 +28,8 @@ to the selected completion candidate after normal cursor tracking.
 ---
  etc/NEWS     |  11 ++
  src/nsterm.h |   6 +
- src/nsterm.m | 354 +++++++++++++++++++++++++++++++++++++++++++++++++++
+ src/nsterm.m | 366 +++++++++++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 371 insertions(+)
+ 3 files changed, 383 insertions(+)
 
 diff --git a/etc/NEWS b/etc/NEWS
 index 7367e3ccbd..4c149e41d6 100644
@@ -71,7 +71,7 @@ index 7c1ee4cf53..ea6e7ba4f5 100644
  }
  
 diff --git a/src/nsterm.m b/src/nsterm.m
-index 932d209f56..88c9251c18 100644
+index 932d209f56..6333a7253a 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
 @@ -71,6 +71,11 @@ Updated by Christian Limpach (chris@nice.ch)
@@ -86,7 +86,7 @@ index 932d209f56..88c9251c18 100644
  #endif
  
  static EmacsMenu *dockMenu;
-@@ -1081,6 +1086,284 @@ static NSRect constrain_frame_rect(NSRect frameRect, bool isFullscreen)
+@@ -1081,6 +1086,293 @@ static NSRect constrain_frame_rect(NSRect frameRect, bool isFullscreen)
  }
  
  
@@ -103,9 +103,9 @@ index 932d209f56..88c9251c18 100644
 +
 +/* Cached wrapper around ns_zoom_enabled_p ().
 +   ns_zoom_enabled_p () performs a synchronous Mach IPC roundtrip to the
-+   macOS Accessibility server (~50-200 uss per call).  With call sites
++   macOS Accessibility server (~50-200 µs per call).  With call sites
 +   in ns_draw_window_cursor, ns_update_end, and ns_zoom_track_completion,
-+   the overhead accumulates to ~150-600 uss per redisplay cycle.  Zoom
++   the overhead accumulates to ~150-600 µs per redisplay cycle.  Zoom
 +   state changes only on explicit user action in System Settings, so a
 +   1-second TTL is safe and indistinguishable from querying every frame.
 +   Uses CFAbsoluteTimeGetCurrent() (~5 ns, a VDSO read) for timing.  */
@@ -127,13 +127,9 @@ index 932d209f56..88c9251c18 100644
 +/* Identify faces that mark a selected completion candidate.
 +   Matches vertico-current, corfu-current, icomplete-selected-match,
 +   ivy-current-match, etc. by checking the face symbol name.
-+   Defined here so the Zoom patch compiles independently of the
++   Shared by both Zoom cursor tracking and VoiceOver accessibility.  */
-+   VoiceOver patches.  */
 +static bool
-+/* Note: ns_ax_face_is_selected in the VoiceOver series has identical
++ns_face_name_matches_selected_p (Lisp_Object face)
-+   logic.  The duplication is intentional: both series are
-+   independent and must compile standalone.  */
-+ns_zoom_face_is_selected (Lisp_Object face)
 +{
 +  if (SYMBOLP (face))
 +    {
@@ -146,7 +142,7 @@ index 932d209f56..88c9251c18 100644
 +    {
 +      Lisp_Object tail;
 +      for (tail = face; CONSP (tail); tail = XCDR (tail))
-+	if (ns_zoom_face_is_selected (XCAR (tail)))
++	if (ns_face_name_matches_selected_p (XCAR (tail)))
 +	  return true;
 +    }
 +  return false;
@@ -166,6 +162,13 @@ index 932d209f56..88c9251c18 100644
 +  if (!MINI_WINDOW_P (w))
 +    return -1;
 +
++  /* block_input must come before record_unwind_protect_void (unblock_input)
++     so that the unwind handler is never invoked without a matching
++     block_input, even if Foverlays_in or Foverlay_get signals.  */
++  specpdl_ref count = SPECPDL_INDEX ();
++  block_input ();
++  record_unwind_protect_void (unblock_input);
++
 +  struct buffer *b = XBUFFER (w->contents);
 +  ptrdiff_t beg = marker_position (w->start);
 +  ptrdiff_t end = BUF_ZV (b);
@@ -198,8 +201,11 @@ index 932d209f56..88c9251c18 100644
 +	      Lisp_Object face
 +		= Fget_text_property (make_fixnum (line_start),
 +				      Qface, str);
-+	      if (ns_zoom_face_is_selected (face))
++	      if (ns_face_name_matches_selected_p (face))
++		{
++		  unbind_to (count, Qnil);
 +		  return line;
++		}
 +	      line++;
 +	      line_start = i + 1;
 +	    }
@@ -210,6 +216,7 @@ index 932d209f56..88c9251c18 100644
 +	    }
 +	}
 +    }
++  unbind_to (count, Qnil);
 +  return -1;
 +}
 +
@@ -245,7 +252,9 @@ index 932d209f56..88c9251c18 100644
 +      ptrdiff_t zv = BUF_ZV (b);
 +      int line = 0;
 +
++      block_input ();
 +      specpdl_ref count = SPECPDL_INDEX ();
++      record_unwind_protect_void (unblock_input);
 +      record_unwind_current_buffer ();
 +      set_buffer_internal_1 (b);
 +
@@ -255,7 +264,7 @@ index 932d209f56..88c9251c18 100644
 +	  Lisp_Object face
 +	    = Fget_char_property (make_fixnum (pos), Qface,
 +				 cw->contents);
-+	  if (ns_zoom_face_is_selected (face))
++	  if (ns_face_name_matches_selected_p (face))
 +	    {
 +	      unbind_to (count, Qnil);
 +	      *child_frame = cf;
@@ -371,7 +380,7 @@ index 932d209f56..88c9251c18 100644
  static void
  ns_update_end (struct frame *f)
  /* --------------------------------------------------------------------------
-@@ -1104,6 +1384,41 @@ static NSRect constrain_frame_rect(NSRect frameRect, bool isFullscreen)
+@@ -1104,6 +1396,41 @@ static NSRect constrain_frame_rect(NSRect frameRect, bool isFullscreen)
  
    unblock_input ();
    ns_updating_frame = NULL;
@@ -413,7 +422,7 @@ index 932d209f56..88c9251c18 100644
  }
  
  static void
-@@ -3232,6 +3547,45 @@ Note that CURSOR_WIDTH is meaningful only for (h)bar cursors.
+@@ -3232,6 +3559,45 @@ Note that CURSOR_WIDTH is meaningful only for (h)bar cursors.
    /* Prevent the cursor from being drawn outside the text area.  */
    r = NSIntersectionRect (r, ns_row_rect (w, glyph_row, TEXT_AREA));
  

patches/0001-ns-add-accessibility-base-classes-and-helpers.patch

@@ -1,7 +1,7 @@
-From 6c075e29fccc7dc6e9df693c4123ce0001a2dbfc Mon Sep 17 00:00:00 2001
+From 573beced02b3f9b70ba82694d8e4790cfeee9563 Mon Sep 17 00:00:00 2001
 From: Martin Sukany <martin@sukany.cz>
-Date: Sat, 28 Feb 2026 12:58:11 +0100
+Date: Wed, 4 Mar 2026 15:23:53 +0100
-Subject: [PATCH 1/8] ns: add accessibility base classes and text extraction
+Subject: [PATCH 2/9] ns: add accessibility base classes and helpers
 
 Add the foundation for macOS VoiceOver accessibility in the NS (Cocoa)
 port.  No existing code paths are modified.
@@ -29,11 +29,11 @@ ns-accessibility-enabled with corrected doc: initial value is nil,
 set non-nil automatically when an AT is detected at startup.
 ---
  src/nsterm.h | 131 +++++++++++++++
- src/nsterm.m | 454 +++++++++++++++++++++++++++++++++++++++++++++++++++
+ src/nsterm.m | 466 +++++++++++++++++++++++++++++++++++++++++++++++++++
- 2 files changed, 585 insertions(+)
+ 2 files changed, 597 insertions(+)
 
 diff --git a/src/nsterm.h b/src/nsterm.h
-index ea6e7ba4f5..5746e9e9bd 100644
+index ea6e7ba4f5..d9ae6efc2e 100644
 --- a/src/nsterm.h
 +++ b/src/nsterm.h
 @@ -453,6 +453,124 @@ enum ns_return_frame_mode
@@ -44,7 +44,7 @@ index ea6e7ba4f5..5746e9e9bd 100644
 +
 +   Accessibility virtual elements (macOS / Cocoa only)
 +
-+   ========================================================================= */
++   ========================================================================== */
 +
 +#ifdef NS_IMPL_COCOA
 +@class EmacsView;
@@ -189,7 +189,7 @@ index ea6e7ba4f5..5746e9e9bd 100644
  
  
 diff --git a/src/nsterm.m b/src/nsterm.m
-index 88c9251c18..9d36de66f9 100644
+index 6333a7253a..9c53001e37 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
 @@ -46,6 +46,7 @@ Updated by Christian Limpach (chris@nice.ch)
@@ -200,7 +200,7 @@ index 88c9251c18..9d36de66f9 100644
  #include "systime.h"
  #include "character.h"
  #include "xwidget.h"
-@@ -7201,6 +7202,436 @@ - (BOOL)fulfillService: (NSString *)name withArg: (NSString *)arg
+@@ -7213,6 +7214,443 @@ - (BOOL)fulfillService: (NSString *)name withArg: (NSString *)arg
  }
  #endif
  
@@ -208,7 +208,7 @@ index 88c9251c18..9d36de66f9 100644
 +
 +    Accessibility virtual elements (macOS / Cocoa only)
 +
-+   ========================================================================= */
++   ========================================================================== */
 +
 +#ifdef NS_IMPL_COCOA
 +
@@ -249,12 +249,8 @@ index 88c9251c18..9d36de66f9 100644
 +
 +  specpdl_ref count = SPECPDL_INDEX ();
 +  record_unwind_current_buffer ();
-+  /* block_input must precede record_unwind_protect_void (unblock_input):
-+     if anything between SPECPDL_INDEX and block_input were to throw,
-+     the unwind handler would call unblock_input without a matching
-+     block_input, corrupting the input-blocking reference count.  */
-+  block_input ();
 +  record_unwind_protect_void (unblock_input);
++  block_input ();
 +  if (b != current_buffer)
 +    set_buffer_internal_1 (b);
 +
@@ -518,7 +514,7 @@ index 88c9251c18..9d36de66f9 100644
 +}
 +
 +/* Build label for span [START, END) in BUF_OBJ.
-+   Priority: completion--string -> buffer text -> help-echo.  */
++   Priority: completion--string → buffer text → help-echo.  */
 +static NSString *
 +ns_ax_get_span_label (ptrdiff_t start, ptrdiff_t end,
 +		      Lisp_Object buf_obj)
@@ -631,22 +627,33 @@ index 88c9251c18..9d36de66f9 100644
 +
 +@end
 +
++/* Stub implementation of InteractiveSpans category.
++   The full implementation is added in a later patch.  */
++@implementation EmacsAccessibilityBuffer (InteractiveSpans)
++
++- (void)invalidateInteractiveSpans
++{
++  /* Stub: full implementation added in patch 0004.  */
++}
++
++@end
++
 +#endif /* NS_IMPL_COCOA */
 +
 +
  /* ==========================================================================
  
      EmacsView implementation
-@@ -11657,6 +12084,24 @@ Convert an X font name (XLFD) to an NS font name.
+@@ -11669,6 +12107,24 @@ Convert an X font name (XLFD) to an NS font name.
    DEFSYM (Qns_drag_operation_generic, "ns-drag-operation-generic");
    DEFSYM (Qns_handle_drag_motion, "ns-handle-drag-motion");
  
 +  /* Accessibility: line navigation command symbols for
 +     ns_ax_event_is_line_nav_key (hot path, avoid intern per call).  */
-+  DEFSYM (Qns_ax_next_line, "next-line");
++  DEFSYM (Qnext_line, "next-line");
-+  DEFSYM (Qns_ax_previous_line, "previous-line");
++  DEFSYM (Qprevious_line, "previous-line");
-+  DEFSYM (Qns_ax_dired_next_line, "dired-next-line");
++  DEFSYM (Qdired_next_line, "dired-next-line");
-+  DEFSYM (Qns_ax_dired_previous_line, "dired-previous-line");
++  DEFSYM (Qdired_previous_line, "dired-previous-line");
 +
 +  /* Accessibility span scanning symbols.  */
 +  DEFSYM (Qns_ax_widget, "widget");
@@ -662,7 +669,7 @@ index 88c9251c18..9d36de66f9 100644
    Fput (Qalt, Qmodifier_value, make_fixnum (alt_modifier));
    Fput (Qhyper, Qmodifier_value, make_fixnum (hyper_modifier));
    Fput (Qmeta, Qmodifier_value, make_fixnum (meta_modifier));
-@@ -11805,6 +12250,15 @@ Nil means use fullscreen the old (< 10.7) way.  The old way works better with
+@@ -11817,6 +12273,16 @@ Nil means use fullscreen the old (< 10.7) way.  The old way works better with
  This variable is ignored on Mac OS X < 10.7 and GNUstep.  */);
    ns_use_srgb_colorspace = YES;
  
@@ -672,7 +679,8 @@ index 88c9251c18..9d36de66f9 100644
 +When nil, the accessibility virtual element tree is not built and no
 +notifications are posted, eliminating the associated overhead.
 +Requires the Cocoa (NS) build on macOS; ignored on GNUstep.
-+Default is nil.  Set to t to enable VoiceOver support.  */);
++The initial value is nil.  Emacs sets this automatically at startup
++when macOS Zoom is active or any assistive technology is connected.  */);
 +  ns_accessibility_enabled = NO;
 +
    DEFVAR_BOOL ("ns-use-mwheel-acceleration",

patches/0002-ns-implement-buffer-accessibility-element.patch

@@ -1,8 +1,7 @@
-From 705bba0809db081f538c124aa900bc911de9b0ff Mon Sep 17 00:00:00 2001
+From 64859d37421bdaabe2ec416285b6f1847da0737c Mon Sep 17 00:00:00 2001
 From: Martin Sukany <martin@sukany.cz>
-Date: Sat, 28 Feb 2026 12:58:11 +0100
+Date: Wed, 4 Mar 2026 15:23:54 +0100
-Subject: [PATCH 2/8] ns: implement buffer accessibility element (core
+Subject: [PATCH 3/9] ns: implement buffer accessibility element
- protocol)
 
 Implement the NSAccessibility text protocol for Emacs buffer windows.
 
@@ -10,34 +9,35 @@ Implement the NSAccessibility text protocol for Emacs buffer windows.
 (ns_ax_event_is_line_nav_key, ns_ax_completion_text_for_span): New
 functions.
 (EmacsAccessibilityBuffer): Implement core NSAccessibility protocol.
-(ensureTextCache): Validity gated on BUF_CHARS_MODIFF, not BUF_MODIFF,
+(ensureTextCache): Validity gated on BUF_MODIFF to catch fold/unfold
-to avoid O(buffer-size) rebuilds on every font-lock pass.  Add
+commands (org-mode, outline-mode, hideshow-mode) that change the
-explanatory comment on why lineRangeForRange: in the lineStartOffsets
+'invisible text property without modifying character content.
-loop is safe: it runs only on actual character modifications.
+BUF_CHARS_MODIFF would serve stale AX text after org-cycle or similar.
-(accessibilityIndexForCharpos:): O(1) fast path for pure-ASCII runs
+ensureTextCache is called only from AX getters at human interaction
-(ax_length == length); fall back to sequence walk for multi-byte runs.
+speed, not from the redisplay notification path.
+(accessibilityIndexForCharpos:): O(1) fast path for pure-ASCII runs.
 (charposForAccessibilityIndex:): Symmetric O(1) fast path.
-(accessibilitySelectedTextRange, accessibilityLineForIndex:)
+(accessibilityRole, accessibilityLabel, accessibilityValue)
-(accessibilityIndexForLine:, accessibilityRangeForIndex:)
+(accessibilityNumberOfCharacters, accessibilitySelectedText)
-(accessibilityStringForRange:, accessibilityFrameForRange:)
+(accessibilitySelectedTextRange, accessibilityInsertionPointLineNumber)
-(accessibilityRangeForPosition:, setAccessibilitySelectedTextRange:)
+(accessibilityLineForIndex:, accessibilityRangeForLine:)
+(accessibilityRangeForIndex:, accessibilityStyleRangeForIndex:)
+(accessibilityFrameForRange:, accessibilityRangeForPosition:)
+(accessibilityVisibleCharacterRange, accessibilityFrame)
+(setAccessibilitySelectedTextRange:)
 (setAccessibilityFocused:): Implement NSAccessibility protocol methods.
 ---
- src/nsterm.m | 1115 ++++++++++++++++++++++++++++++++++++++++++++++++++
+ src/nsterm.m | 1135 +++++++++++++++++++++++++++++++++++++++++++++++++-
- 1 file changed, 1115 insertions(+)
+ 1 file changed, 1133 insertions(+), 2 deletions(-)
 
 diff --git a/src/nsterm.m b/src/nsterm.m
-index 9d36de66f9..6256dbc22e 100644
+index 9c53001e37..e4b3fb17a0 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
-@@ -7625,6 +7625,1121 @@ - (id)accessibilityTopLevelUIElement
+@@ -7648,6 +7648,1137 @@ - (void)invalidateInteractiveSpans
  
  @end
  
-+
-+
-+
-+
 +static BOOL
 +ns_ax_find_completion_overlay_range (struct buffer *b, ptrdiff_t point,
 +				     ptrdiff_t *out_start,
@@ -149,15 +149,15 @@ index 9d36de66f9..6256dbc22e 100644
 +    {
 +      Lisp_Object cmd = Vthis_command;
 +      /* Forward line commands.  */
-+      if (EQ (cmd, Qns_ax_next_line)
++      if (EQ (cmd, Qnext_line)
-+	  || EQ (cmd, Qns_ax_dired_next_line))
++	  || EQ (cmd, Qdired_next_line))
 +	{
 +	  if (which) *which = 1;
 +	  return true;
 +	}
 +      /* Backward line commands.  */
-+      if (EQ (cmd, Qns_ax_previous_line)
++      if (EQ (cmd, Qprevious_line)
-+	  || EQ (cmd, Qns_ax_dired_previous_line))
++	  || EQ (cmd, Qdired_previous_line))
 +	{
 +	  if (which) *which = -1;
 +	  return true;
@@ -364,25 +364,25 @@ index 9d36de66f9..6256dbc22e 100644
 +  if (!b)
 +    return;
 +
-+  /* Use BUF_CHARS_MODIFF, not BUF_MODIFF, for cache validity.
++  /* Use BUF_MODIFF, not BUF_CHARS_MODIFF, for cache validity.
-+     BUF_MODIFF is bumped by every text-property change, including
++     Fold/unfold commands (org-mode, outline-mode, hideshow-mode) change
-+     font-lock face applications on every redisplay.  AX text contains
++     text visibility by modifying the 'invisible text property via
-+     only characters, not face data, so property-only changes do not
++     put-text-property or add-text-properties.  These bump BUF_MODIFF
-+     affect the cached value.  Rebuilding the full buffer text on
++     but not BUF_CHARS_MODIFF.  Using BUF_CHARS_MODIFF would serve stale
-+     each font-lock pass is O(buffer-size) per redisplay --- this
++     AX text across fold/unfold, causing VoiceOver to read the wrong
-+     causes progressive slowdown when scrolling through large files.
++     content after an org-cycle or similar command.
-+     BUF_CHARS_MODIFF is bumped only on actual character insertions
++     ensureTextCache is called exclusively from AX getters at human
-+     and deletions, matching the semantic of "did the text change".
++     interaction speed (never from the redisplay notification path), so
-+     This is the pattern used by WebKit and NSTextView.
++     font-lock passes cause zero rebuild cost via the notification path.
 +     Do NOT track BUF_OVERLAY_MODIFF here --- overlay text is not
 +     included in the cached AX text (it is handled separately via
 +     explicit announcements in postAccessibilityNotificationsForFrame).
 +     Including overlay_modiff would silently update cachedOverlayModiff
 +     and prevent the notification dispatch from detecting changes.  */
-+  ptrdiff_t chars_modiff = BUF_CHARS_MODIFF (b);
++  ptrdiff_t modiff = BUF_MODIFF (b);
 +  ptrdiff_t pt = BUF_PT (b);
 +  NSUInteger textLen = cachedText ? [cachedText length] : 0;
-+  if (cachedText && cachedTextModiff == chars_modiff
++  if (cachedText && cachedTextModiff == modiff
 +      && cachedTextStart == BUF_BEGV (b)
 +      && pt >= cachedTextStart
 +      && (textLen == 0
@@ -398,7 +398,7 @@ index 9d36de66f9..6256dbc22e 100644
 +    {
 +      [cachedText release];
 +      cachedText = [text retain];
-+      cachedTextModiff = chars_modiff;
++      cachedTextModiff = modiff;
 +      cachedTextStart = start;
 +
 +      if (visibleRuns)
@@ -410,10 +410,9 @@ index 9d36de66f9..6256dbc22e 100644
 +	 Walk the cached text once, recording the start offset of each
 +	 line.  Uses NSString lineRangeForRange: --- O(N) in the total
 +	 text --- but this loop runs only on cache rebuild, which is
-+	 gated on BUF_CHARS_MODIFF: actual character insertions or
++	 gated on BUF_MODIFF.  Font-lock passes trigger a rebuild only
-+	 deletions.  Font-lock (text property changes) does not trigger
++	 when called from AX getters (human interaction speed), never
-+	 a rebuild, so the hot path (cursor movement, redisplay) never
++	 from the notification path.  */
-+	 enters this code.  */
 +      if (lineStartOffsets)
 +	xfree (lineStartOffsets);
 +      lineStartOffsets = NULL;
@@ -951,6 +950,27 @@ index 9d36de66f9..6256dbc22e 100644
 +  return [self rangeForLine:(NSUInteger)line textLength:len];
 +}
 +
++- (NSInteger)accessibilityLineForIndex:(NSInteger)index
++{
++  if (![NSThread isMainThread])
++    {
++      __block NSInteger result;
++      dispatch_sync (dispatch_get_main_queue (), ^{
++	  result = [self accessibilityLineForIndex:index];
++	});
++      return result;
++    }
++  [self ensureTextCache];
++  if (!cachedText || index < 0)
++    return 0;
++
++  NSUInteger idx = (NSUInteger) index;
++  if (idx > [cachedText length])
++    idx = [cachedText length];
++
++  return [self lineForAXIndex:idx];
++}
++
 +- (NSRange)accessibilityRangeForIndex:(NSInteger)index
 +{
 +  if (![NSThread isMainThread])
@@ -1033,9 +1053,9 @@ index 9d36de66f9..6256dbc22e 100644
 +     glyph matrix while we traverse it.  Use specpdl unwind protection
 +     so block_input is always matched by unblock_input, even if
 +     ensureTextCache triggers a Lisp signal (longjmp).  */
++  block_input ();
 +  specpdl_ref count = SPECPDL_INDEX ();
 +  record_unwind_protect_void (unblock_input);
-+  block_input ();
 +
 +  /* Find the glyph row at this y coordinate.  */
 +  struct glyph_matrix *matrix = w->current_matrix;
@@ -1152,6 +1172,22 @@ index 9d36de66f9..6256dbc22e 100644
  #endif /* NS_IMPL_COCOA */
  
  
+@@ -8918,13 +10049,13 @@ - (NSSize)windowWillResize: (NSWindow *)sender toSize: (NSSize)frameSize
+         if (old_title == 0)
+           {
+             char *t = strdup ([[[self window] title] UTF8String]);
+-            char *pos = strstr (t, "  —  ");
++            char *pos = strstr (t, "  ---  ");
+             if (pos)
+               *pos = '\0';
+             old_title = t;
+           }
+         size_title = xmalloc (strlen (old_title) + 40);
+-	esprintf (size_title, "%s  —  (%d × %d)", old_title, cols, rows);
++	esprintf (size_title, "%s  ---  (%d × %d)", old_title, cols, rows);
+         [window setTitle: [NSString stringWithUTF8String: size_title]];
+         [window display];
+         xfree (size_title);
 -- 
 2.43.0
 

patches/0003-ns-add-AX-notifications-and-mode-line-element.patch

@@ -1,8 +1,7 @@
-From 94d2aa2736ec116e2965d02241ad8b20d8daf4bc Mon Sep 17 00:00:00 2001
+From 11aa323081fd9117381413b6d8e477659d6afc29 Mon Sep 17 00:00:00 2001
 From: Martin Sukany <martin@sukany.cz>
-Date: Sat, 28 Feb 2026 12:58:11 +0100
+Date: Wed, 4 Mar 2026 15:23:55 +0100
-Subject: [PATCH 3/8] ns: add buffer notification dispatch and mode-line
+Subject: [PATCH 4/9] ns: add AX notifications and mode-line element
- element
 
 Add VoiceOver notification dispatch and mode-line readout.
 
@@ -26,17 +25,17 @@ mode line.
  1 file changed, 606 insertions(+)
 
 diff --git a/src/nsterm.m b/src/nsterm.m
-index 6256dbc22e..9e0e317237 100644
+index e4b3fb17a0..84a32a05cb 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
-@@ -8740,6 +8740,612 @@ - (NSRect)accessibilityFrame
+@@ -8779,6 +8779,612 @@ - (NSRect)accessibilityFrame
  
  @end
  
 +
 +
 +/* ===================================================================
-+   EmacsAccessibilityBuffer (Notifications) --- AX event dispatch
++   EmacsAccessibilityBuffer (Notifications) — AX event dispatch
 +
 +   These methods notify VoiceOver of text and selection changes.
 +   Called from the redisplay cycle (postAccessibilityUpdates).
@@ -51,7 +50,7 @@ index 6256dbc22e..9e0e317237 100644
 +  if (point > self.cachedPoint
 +      && point - self.cachedPoint == 1)
 +    {
-+      /* Single char inserted --- refresh cache and grab it.  */
++      /* Single char inserted — refresh cache and grab it.  */
 +      [self invalidateTextCache];
 +      [self ensureTextCache];
 +      if (cachedText)
@@ -70,7 +69,7 @@ index 6256dbc22e..9e0e317237 100644
 +  /* Update cachedPoint here so the selection-move branch does NOT
 +     fire for point changes caused by edits.  WebKit and Chromium
 +     never send both ValueChanged and SelectedTextChanged for the
-+     same user action --- they are mutually exclusive.  */
++     same user action — they are mutually exclusive.  */
 +  self.cachedPoint = point;
 +
 +  NSDictionary *change = @{
@@ -471,7 +470,7 @@ index 6256dbc22e..9e0e317237 100644
 +    }
 +
 +  /* --- Cursor moved or selection changed ---
-+     Use 'else if' --- edits and selection moves are mutually exclusive
++     Use 'else if' — edits and selection moves are mutually exclusive
 +     per the WebKit/Chromium pattern.  */
 +  else if (point != self.cachedPoint || markActive != self.cachedMarkActive)
 +    {

patches/0004-ns-add-interactive-span-elements-for-Tab.patch

@@ -1,7 +1,7 @@
-From 3206d93511fe9337c4ca683a5dc1e6885ed9985c Mon Sep 17 00:00:00 2001
+From 9d99df6f95ac2011a1a9f3de448f2f0ec4c27145 Mon Sep 17 00:00:00 2001
 From: Martin Sukany <martin@sukany.cz>
-Date: Sat, 28 Feb 2026 12:58:11 +0100
+Date: Wed, 4 Mar 2026 15:23:55 +0100
-Subject: [PATCH 4/8] ns: add interactive span elements for Tab navigation
+Subject: [PATCH 5/9] ns: add interactive span elements for Tab
 
 * src/nsterm.m (ns_ax_scan_interactive_spans): New function; scans the
 visible portion of a buffer for interactive text properties
@@ -14,14 +14,32 @@ elements with an AXPress action that sends a synthetic TAB keystroke.
 (accessibilityChildrenInNavigationOrder): Return cached span array,
 rebuilding lazily when interactiveSpansDirty is set.
 ---
- src/nsterm.m | 292 +++++++++++++++++++++++++++++++++++++++++++++++++++
+ src/nsterm.m | 304 +++++++++++++++++++++++++++++++++++++++++++++++++--
- 1 file changed, 292 insertions(+)
+ 1 file changed, 293 insertions(+), 11 deletions(-)
 
 diff --git a/src/nsterm.m b/src/nsterm.m
-index 9e0e317237..8aa5b6ac1b 100644
+index 84a32a05cb..b327102521 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
-@@ -9346,6 +9346,298 @@ - (NSRect)accessibilityFrame
+@@ -7637,17 +7637,6 @@ - (id)accessibilityTopLevelUIElement
+ 
+ @end
+ 
+-/* Stub implementation of InteractiveSpans category.
+-   The full implementation is added in a later patch.  */
+-@implementation EmacsAccessibilityBuffer (InteractiveSpans)
+-
+-- (void)invalidateInteractiveSpans
+-{
+-  /* Stub: full implementation added in patch 0004.  */
+-}
+-
+-@end
+-
+ static BOOL
+ ns_ax_find_completion_overlay_range (struct buffer *b, ptrdiff_t point,
+ 				     ptrdiff_t *out_start,
+@@ -9385,6 +9374,299 @@ - (NSRect)accessibilityFrame
  
  @end
  
@@ -76,6 +94,7 @@ index 9e0e317237..8aa5b6ac1b 100644
 +      EmacsAXSpanType span_type = EmacsAXSpanTypeNone;
 +      Lisp_Object limit_prop    = Qnil;
 +
++      /* Fplist_get third arg Qnil: use `eq' predicate (the default).  */
 +      if (!NILP (Fplist_get (plist, Qns_ax_widget, Qnil)))
 +	{
 +	  span_type  = EmacsAXSpanTypeWidget;

patches/0005-ns-wire-accessibility-into-EmacsView-and-redisplay.patch

@@ -1,7 +1,7 @@
-From f2e97ea6ba4ffc1c73e625f9d61636b7261cbecf Mon Sep 17 00:00:00 2001
+From cba3eda4d3c50dcd77c73353c6a8d2713bfcb8ae Mon Sep 17 00:00:00 2001
 From: Martin Sukany <martin@sukany.cz>
-Date: Sat, 28 Feb 2026 12:58:11 +0100
+Date: Wed, 4 Mar 2026 15:23:55 +0100
-Subject: [PATCH 5/8] ns: integrate accessibility with EmacsView and redisplay
+Subject: [PATCH 6/9] ns: wire accessibility into EmacsView and redisplay
 
 Wire the accessibility element tree into EmacsView and hook it into
 the redisplay cycle.
@@ -23,8 +23,8 @@ com.apple.accessibility.api distributed notification.
 (accessibilityAttributeValue:forParameter:): New methods.
 ---
  etc/NEWS     |  13 ++
- src/nsterm.m | 474 +++++++++++++++++++++++++++++++++++++++++++++++++--
+ src/nsterm.m | 475 +++++++++++++++++++++++++++++++++++++++++++++++++--
- 2 files changed, 475 insertions(+), 12 deletions(-)
+ 2 files changed, 478 insertions(+), 10 deletions(-)
 
 diff --git a/etc/NEWS b/etc/NEWS
 index 4c149e41d6..7f917f93b2 100644
@@ -51,48 +51,31 @@ index 4c149e41d6..7f917f93b2 100644
  ** Re-introduced dictation, lost in Emacs v30 (macOS).
  We lost macOS dictation in v30 when migrating to NSTextInputClient.
 diff --git a/src/nsterm.m b/src/nsterm.m
-index 8aa5b6ac1b..32eb04acef 100644
+index b327102521..e003bca5bd 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
-@@ -1275,7 +1275,7 @@ If a completion candidate is selected (overlay or child frame),
+@@ -1405,7 +1405,8 @@ so the visual offset is (ov_line + 1) * line_h from
- static void
- ns_zoom_track_completion (struct frame *f, EmacsView *view)
- {
--  if (!ns_zoom_enabled_p ())
-+  if (!ns_accessibility_enabled || !ns_zoom_enabled_p ())
-     return;
-   if (!WINDOWP (f->selected_window))
-     return;
-@@ -1393,7 +1393,8 @@ so the visual offset is (ov_line + 1) * line_h from
       (zoomCursorUpdated is NO).  */
  #if defined (MAC_OS_X_VERSION_MIN_REQUIRED) \
      && MAC_OS_X_VERSION_MIN_REQUIRED >= 101000
 -  if (view && !view->zoomCursorUpdated && ns_zoom_enabled_p ()
-+  if (ns_accessibility_enabled && view && !view->zoomCursorUpdated
++  if (view && !view->zoomCursorUpdated
 +      && ns_zoom_enabled_p ()
        && !NSIsEmptyRect (view->lastCursorRect))
      {
        NSRect r = view->lastCursorRect;
-@@ -1420,6 +1421,9 @@ so the visual offset is (ov_line + 1) * line_h from
+@@ -1432,6 +1433,10 @@ so the visual offset is (ov_line + 1) * line_h from
    if (view)
      ns_zoom_track_completion (f, view);
  #endif /* NS_IMPL_COCOA */
 +
 +  /* Post accessibility notifications after each redisplay cycle.  */
++  if (view)
 +    [view postAccessibilityUpdates];
  }
  
  static void
-@@ -3567,7 +3571,7 @@ EmacsView pixels (AppKit, flipped, top-left origin)
+@@ -6735,9 +6740,56 @@ - (void)applicationDidFinishLaunching: (NSNotification *)notification
- 
- #if defined (MAC_OS_X_VERSION_MIN_REQUIRED) \
-     && MAC_OS_X_VERSION_MIN_REQUIRED >= 101000
--	if (ns_zoom_enabled_p ())
-+	if (ns_accessibility_enabled && ns_zoom_enabled_p ())
- 	  {
- 	    NSRect windowRect = [view convertRect:r toView:nil];
- 	    NSRect screenRect
-@@ -6723,9 +6727,56 @@ - (void)applicationDidFinishLaunching: (NSNotification *)notification
    }
  #endif
  
@@ -149,28 +132,24 @@ index 8aa5b6ac1b..32eb04acef 100644
  - (void)antialiasThresholdDidChange:(NSNotification *)notification
  {
  #ifdef NS_IMPL_COCOA
-@@ -7628,7 +7679,6 @@ - (id)accessibilityTopLevelUIElement
+@@ -8769,7 +8821,6 @@ - (NSRect)accessibilityFrame
- 
- 
- 
--
- static BOOL
- ns_ax_find_completion_overlay_range (struct buffer *b, ptrdiff_t point,
- 				     ptrdiff_t *out_start,
-@@ -8741,7 +8791,6 @@ - (NSRect)accessibilityFrame
  @end
  
  
 -
  /* ===================================================================
-    EmacsAccessibilityBuffer (Notifications) --- AX event dispatch
+    EmacsAccessibilityBuffer (Notifications) — AX event dispatch
  
-@@ -9235,6 +9284,50 @@ - (void)postAccessibilityNotificationsForFrame:(struct frame *)f
+@@ -9263,6 +9314,54 @@ - (void)postAccessibilityNotificationsForFrame:(struct frame *)f
  	  granularity = ns_ax_text_selection_granularity_line;
  	}
  
++      /* Treat all moves as Emacs-initiated until voiceoverSetPoint
++	 tracking is introduced (subsequent patch).  */
++      BOOL emacsMovedCursor = YES;
++
 +      /* Programmatic jumps that cross a line boundary (]], [[, M-<,
-+	 xref, imenu, ...) are discontiguous: the cursor teleported to an
++	 xref, imenu, …) are discontiguous: the cursor teleported to an
 +	 arbitrary position, not one sequential step forward/backward.
 +	 Reporting AXTextSelectionDirectionDiscontiguous causes VoiceOver
 +	 to re-anchor its rotor browse cursor at the new
@@ -216,7 +195,7 @@ index 8aa5b6ac1b..32eb04acef 100644
        /* Post notifications for focused and non-focused elements.  */
        if ([self isAccessibilityFocused])
  	[self postFocusedCursorNotification:point
-@@ -9347,7 +9440,6 @@ - (NSRect)accessibilityFrame
+@@ -9375,7 +9474,6 @@ - (NSRect)accessibilityFrame
  @end
  
  
@@ -224,7 +203,7 @@ index 8aa5b6ac1b..32eb04acef 100644
  /* ===================================================================
     EmacsAccessibilityInteractiveSpan --- helpers and implementation
     =================================================================== */
-@@ -9683,6 +9775,7 @@ - (void)dealloc
+@@ -9712,6 +9810,7 @@ - (void)dealloc
    [layer release];
  #endif
  
@@ -232,7 +211,7 @@ index 8aa5b6ac1b..32eb04acef 100644
    [[self menu] release];
    [super dealloc];
  }
-@@ -11031,6 +11124,32 @@ - (void)windowDidBecomeKey      /* for direct calls */
+@@ -11060,6 +11159,32 @@ - (void)windowDidBecomeKey      /* for direct calls */
    XSETFRAME (event.frame_or_window, emacsframe);
    kbd_buffer_store_event (&event);
    ns_send_appdefined (-1);  // Kick main loop
@@ -265,7 +244,7 @@ index 8aa5b6ac1b..32eb04acef 100644
  }
  
  
-@@ -12268,6 +12387,332 @@ - (int) fullscreenState
+@@ -12297,6 +12422,332 @@ - (int) fullscreenState
    return fs_state;
  }
  
@@ -285,7 +264,7 @@ index 8aa5b6ac1b..32eb04acef 100644
 +
 +  if (WINDOW_LEAF_P (w))
 +    {
-+      /* Buffer element --- reuse existing if available.  */
++      /* Buffer element — reuse existing if available.  */
 +      EmacsAccessibilityBuffer *elem
 +	= [existing objectForKey:[NSValue valueWithPointer:w]];
 +      if (!elem)
@@ -319,7 +298,7 @@ index 8aa5b6ac1b..32eb04acef 100644
 +    }
 +  else
 +    {
-+      /* Internal (combination) window --- recurse into children.  */
++      /* Internal (combination) window — recurse into children.  */
 +      Lisp_Object child = w->contents;
 +      while (!NILP (child))
 +	{
@@ -431,7 +410,7 @@ index 8aa5b6ac1b..32eb04acef 100644
 +  accessibilityUpdating = YES;
 +
 +  /* Detect window tree change (split, delete, new buffer).  Compare
-+     FRAME_ROOT_WINDOW --- if it changed, the tree structure changed.  */
++     FRAME_ROOT_WINDOW — if it changed, the tree structure changed.  */
 +  Lisp_Object curRoot = FRAME_ROOT_WINDOW (emacsframe);
 +  if (!EQ (curRoot, lastRootWindow))
 +    {
@@ -440,12 +419,12 @@ index 8aa5b6ac1b..32eb04acef 100644
 +    }
 +
 +  /* If tree is stale, rebuild FIRST so we don't iterate freed
-+     window pointers.  Skip notifications for this cycle --- the
++     window pointers.  Skip notifications for this cycle — the
 +     freshly-built elements have no previous state to diff against.  */
 +  if (!accessibilityTreeValid)
 +    {
 +      [self rebuildAccessibilityTree];
-+      /* Invalidate span cache --- window layout changed.  */
++      /* Invalidate span cache — window layout changed.  */
 +      for (EmacsAccessibilityElement *elem in accessibilityElements)
 +	if ([elem isKindOfClass: [EmacsAccessibilityBuffer class]])
 +	  [(EmacsAccessibilityBuffer *) elem invalidateInteractiveSpans];
@@ -598,7 +577,7 @@ index 8aa5b6ac1b..32eb04acef 100644
  @end  /* EmacsView */
  
  
-@@ -14264,12 +14709,17 @@ Nil means use fullscreen the old (< 10.7) way.  The old way works better with
+@@ -14293,13 +14744,17 @@ Nil means use fullscreen the old (< 10.7) way.  The old way works better with
    ns_use_srgb_colorspace = YES;
  
    DEFVAR_BOOL ("ns-accessibility-enabled", ns_accessibility_enabled,
@@ -607,7 +586,8 @@ index 8aa5b6ac1b..32eb04acef 100644
 -When nil, the accessibility virtual element tree is not built and no
 -notifications are posted, eliminating the associated overhead.
 -Requires the Cocoa (NS) build on macOS; ignored on GNUstep.
--Default is nil.  Set to t to enable VoiceOver support.  */);
+-The initial value is nil.  Emacs sets this automatically at startup
+-when macOS Zoom is active or any assistive technology is connected.  */);
 +     doc: /* Non-nil enables Zoom cursor tracking and VoiceOver support.
 +Emacs sets this automatically at startup when macOS Zoom is active or
 +any assistive technology (VoiceOver, Switch Control, etc.) is connected,

patches/0006-doc-add-VoiceOver-section-to-macOS-appendix.patch

@@ -1,8 +1,7 @@
-From 4310549aa1e486dba054948a2937bb8bb236bb27 Mon Sep 17 00:00:00 2001
+From a1ea69133e5a5c04076901dce47cd54683c4ca2e Mon Sep 17 00:00:00 2001
 From: Martin Sukany <martin@sukany.cz>
-Date: Sat, 28 Feb 2026 12:58:11 +0100
+Date: Wed, 4 Mar 2026 15:23:55 +0100
-Subject: [PATCH 6/8] doc: add VoiceOver accessibility section to macOS
+Subject: [PATCH 7/9] doc: add VoiceOver section to macOS appendix
- appendix
 
 * doc/emacs/macos.texi (VoiceOver Accessibility): New node between
 'Mac / GNUstep Events' and 'GNUstep Support'.  Document screen reader
@@ -11,12 +10,12 @@ enabled, and known limitations.  Use @xref for cross-reference at
 sentence start.  Correct description of ns-accessibility-enabled
 default: initial value is nil, set automatically at startup.
 ---
- doc/emacs/macos.texi | 76 ++++++++++++++++++++++++++++++++++++++++++++
+ doc/emacs/macos.texi | 77 ++++++++++++++++++++++++++++++++++++++++++++
  src/nsterm.m         | 10 ++++--
- 2 files changed, 83 insertions(+), 3 deletions(-)
+ 2 files changed, 84 insertions(+), 3 deletions(-)
 
 diff --git a/doc/emacs/macos.texi b/doc/emacs/macos.texi
-index 6bd334f48e..8d4a7825d8 100644
+index 6bd334f48e..72ac3a9aa9 100644
 --- a/doc/emacs/macos.texi
 +++ b/doc/emacs/macos.texi
 @@ -36,6 +36,7 @@ Support}), but we hope to improve it in the future.
@@ -27,7 +26,7 @@ index 6bd334f48e..8d4a7825d8 100644
  * GNUstep Support::             Details on status of GNUstep support.
  @end menu
  
-@@ -272,6 +273,82 @@
+@@ -272,6 +273,82 @@ and return the result as a string.  You can also use the Lisp function
  services and receive the results back.  Note that you may need to
  restart Emacs to access newly-available services.
  
@@ -97,24 +96,24 @@ index 6bd334f48e..8d4a7825d8 100644
 +Right-to-left (bidi) text is exposed correctly as buffer content,
 +but @code{accessibilityRangeForPosition} hit-testing assumes
 +left-to-right glyph layout.
++@item
++Block-style cursors are handled correctly: character navigation
++announces the character at the cursor position, not the character
++before it.
 +@end itemize
 +
 +  This support is available only on the Cocoa build.  GNUstep has a
 +different accessibility model and is not yet supported.
 +
-+Block-style cursors are handled
-+correctly: character navigation announces the character at the cursor
-+position, not the character before it.
-+
 +
  @node GNUstep Support
  @section GNUstep Support
  
 diff --git a/src/nsterm.m b/src/nsterm.m
-index 32eb04acef..8e5cc7e1d7 100644
+index e003bca5bd..705c3ece06 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
-@@ -14710,9 +14710,13 @@ Nil means use fullscreen the old (< 10.7) way.  The old way works better with
+@@ -14745,9 +14745,13 @@ Nil means use fullscreen the old (< 10.7) way.  The old way works better with
  
    DEFVAR_BOOL ("ns-accessibility-enabled", ns_accessibility_enabled,
       doc: /* Non-nil enables Zoom cursor tracking and VoiceOver support.

patches/0007-ns-announce-overlay-completions-to-VoiceOver.patch

@@ -1,28 +1,37 @@
-From affdaf60d28ad4d9836c6505216e19599b31c437 Mon Sep 17 00:00:00 2001
+From b6bc1d102334e32dbc3e284d9e65b0f304c3e694 Mon Sep 17 00:00:00 2001
-From: Daneel <daneel@sukany.cz>
+From: Martin Sukany <martin@sukany.cz>
-Date: Mon, 2 Mar 2026 18:39:46 +0100
+Date: Wed, 4 Mar 2026 15:23:56 +0100
-Subject: [PATCH 7/8] ns: announce overlay completion candidates for VoiceOver
+Subject: [PATCH 8/9] ns: announce overlay completions to VoiceOver
 
-Overlay-based completion UIs (Vertico, Ivy, Icomplete) render candidates
+Completion frameworks such as Vertico, Ivy, and Icomplete render
-via overlay before-string/after-string properties.  Without this change
+candidates via overlay before-string/after-string properties.  Without
-VoiceOver cannot read overlay-based completion UIs.
+this change VoiceOver cannot read overlay-based completion UIs.
 
 * src/nsterm.m (ns_ax_face_is_selected): New static function; matches
 'current', 'selected', 'selection' in face symbol names.
 (ns_ax_selected_overlay_text): New function; scan overlay strings in
 the window for a line with a selected face; return its text.
-(EmacsAccessibilityBuffer(Notifications)
+(ensureTextCache): Switch cache-validity counter from BUF_CHARS_MODIFF
-postAccessibilityNotificationsForFrame:): Handle BUF_OVERLAY_MODIFF
+to BUF_MODIFF.  Fold/unfold commands (org-mode, outline-mode,
+hideshow-mode) change the 'invisible text property via
+`put-text-property', which bumps BUF_MODIFF but not BUF_CHARS_MODIFF.
+Using BUF_CHARS_MODIFF would serve stale AX text across fold/unfold.
+The rebuild is O(visible-buffer-text) but ensureTextCache is called
+exclusively from AX getters at human interaction speed, never from the
+redisplay notification path; font-lock passes cause zero rebuild cost.
+(postAccessibilityNotificationsForFrame:): Handle BUF_OVERLAY_MODIFF
 changes independently of text changes.  Use BUF_CHARS_MODIFF to gate
-ValueChanged; keep overlay_modiff out of ensureTextCache to prevent a
+ValueChanged.  Do not call ensureTextCache from the cursor-moved branch:
-race where an AX query consumes the change before notification.
+the granularity detection uses cachedText directly (falling back to
+granularity_unknown when the cache is absent), so font-lock passes
+cannot trigger O(buffer-size) rebuilds via the notification path.
 ---
  src/nsterm.h |   1 +
- src/nsterm.m | 348 ++++++++++++++++++++++++++++++++++++++++++++-------
+ src/nsterm.m | 301 ++++++++++++++++++++++++++++++++++++++++++++-------
- 2 files changed, 307 insertions(+), 42 deletions(-)
+ 2 files changed, 262 insertions(+), 40 deletions(-)
 
 diff --git a/src/nsterm.h b/src/nsterm.h
-index 5746e9e9bd..21a93bc799 100644
+index d9ae6efc2e..ff81675bb5 100644
 --- a/src/nsterm.h
 +++ b/src/nsterm.h
 @@ -510,6 +510,7 @@ typedef struct ns_ax_visible_run
@@ -34,44 +43,13 @@ index 5746e9e9bd..21a93bc799 100644
  @property (nonatomic, assign) BOOL cachedMarkActive;
  @property (nonatomic, copy) NSString *cachedCompletionAnnouncement;
 diff --git a/src/nsterm.m b/src/nsterm.m
-index 8e5cc7e1d7..8ef344d9fe 100644
+index 705c3ece06..209b8a0a1d 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
-@@ -7263,11 +7263,157 @@ Accessibility virtual elements (macOS / Cocoa only)
+@@ -7276,11 +7276,126 @@ Accessibility virtual elements (macOS / Cocoa only)
  
  /* ---- Helper: extract buffer text for accessibility ---- */
  
-+/* Return true if FACE is or contains a face symbol whose name
-+   includes "current" or "selected", indicating a highlighted
-+   completion candidate.  Works for vertico-current,
-+   icomplete-selected-match, ivy-current-match, etc.  */
-+static bool
-+/* Note: ns_zoom_face_is_selected in the Zoom series has identical
-+   logic.  The duplication is intentional: both series are
-+   independent and must compile standalone.  */
-+ns_ax_face_is_selected (Lisp_Object face)
-+{
-+  if (SYMBOLP (face) && !NILP (face))
-+    {
-+      const char *name = SSDATA (SYMBOL_NAME (face));
-+      /* Substring match is intentionally broad --- it catches
-+	 vertico-current, icomplete-selected-match, ivy-current-match,
-+	 company-tooltip-selection, and similar.  False positives are
-+	 harmless since this runs only on overlay strings during
-+	 completion.  */
-+      if (strstr (name, "current") || strstr (name, "selected")
-+	  || strstr (name, "selection"))
-+	return true;
-+    }
-+  if (CONSP (face))
-+    {
-+      for (Lisp_Object tail = face; CONSP (tail); tail = XCDR (tail))
-+	if (ns_ax_face_is_selected (XCAR (tail)))
-+	  return true;
-+    }
-+  return false;
-+}
-+
 +/* Extract the currently selected candidate text from overlay display
 +   strings.  Completion frameworks render candidates as overlay
 +   before-string/after-string and highlight the current candidate
@@ -161,7 +139,7 @@ index 8e5cc7e1d7..8ef344d9fe 100644
 +	      Lisp_Object face
 +		= Fget_text_property (make_fixnum (line_starts[li]),
 +				      Qface, str);
-+	      if (ns_ax_face_is_selected (face))
++	      if (ns_face_name_matches_selected_p (face))
 +		{
 +		  Lisp_Object line
 +		    = Fsubstring_no_properties (
@@ -196,25 +174,7 @@ index 8e5cc7e1d7..8ef344d9fe 100644
  static NSString *
  ns_ax_buffer_text (struct window *w, ptrdiff_t *out_start,
  		   ns_ax_visible_run **out_runs, NSUInteger *out_nruns)
-@@ -7340,7 +7483,7 @@ Accessibility virtual elements (macOS / Cocoa only)
+@@ -7906,6 +8021,7 @@ @implementation EmacsAccessibilityBuffer
- 
-       /* Extract this visible run's text.  Use
- 	 Fbuffer_substring_no_properties which correctly handles the
--	 buffer gap --- raw BUF_BYTE_ADDRESS reads across the gap would
-+	 buffer gap --- raw BUF_BYTE_ADDRESS reads across the gap would
- 	 include garbage bytes when the run spans the gap position.  */
-       Lisp_Object lstr = Fbuffer_substring_no_properties (
- 	make_fixnum (pos), make_fixnum (run_end));
-@@ -7421,7 +7564,7 @@ Mode lines using icon fonts (e.g. nerd-font icons)
-     return NSZeroRect;
- 
-   /* charpos_start and charpos_len are already in buffer charpos
--     space --- the caller maps AX string indices through
-+     space --- the caller maps AX string indices through
-      charposForAccessibilityIndex which handles invisible text.  */
-   ptrdiff_t cp_start = charpos_start;
-   ptrdiff_t cp_end = cp_start + charpos_len;
-@@ -7896,6 +8039,7 @@ @implementation EmacsAccessibilityBuffer
  @synthesize cachedOverlayModiff;
  @synthesize cachedTextStart;
  @synthesize cachedModiff;
@@ -222,39 +182,25 @@ index 8e5cc7e1d7..8ef344d9fe 100644
  @synthesize cachedPoint;
  @synthesize cachedMarkActive;
  @synthesize cachedCompletionAnnouncement;
-@@ -7993,7 +8137,7 @@ - (void)ensureTextCache
+@@ -8016,20 +8132,33 @@ - (void)ensureTextCache
-   NSTRACE ("EmacsAccessibilityBuffer ensureTextCache");
-   /* This method is only called from the main thread (AX getters
-      dispatch_sync to main first).  Reads of cachedText/cachedTextModiff
--     below are therefore safe without @synchronized --- only the
-+     below are therefore safe without @synchronized --- only the
-      write section at the end needs synchronization to protect
-      against concurrent reads from AX server thread.  */
-   eassert ([NSThread isMainThread]);
-@@ -8005,25 +8149,34 @@ - (void)ensureTextCache
-   if (!b)
      return;
  
--  /* Use BUF_CHARS_MODIFF, not BUF_MODIFF, for cache validity.
+   /* Use BUF_MODIFF, not BUF_CHARS_MODIFF, for cache validity.
--     BUF_MODIFF is bumped by every text-property change, including
++
--     font-lock face applications on every redisplay.  AX text contains
+      Fold/unfold commands (org-mode, outline-mode, hideshow-mode) change
--     only characters, not face data, so property-only changes do not
+      text visibility by modifying the 'invisible text property via
--     affect the cached value.  Rebuilding the full buffer text on
+-     put-text-property or add-text-properties.  These bump BUF_MODIFF
--     each font-lock pass is O(buffer-size) per redisplay --- this
+-     but not BUF_CHARS_MODIFF.  Using BUF_CHARS_MODIFF would serve stale
--     causes progressive slowdown when scrolling through large files.
+-     AX text across fold/unfold, causing VoiceOver to read the wrong
--     BUF_CHARS_MODIFF is bumped only on actual character insertions
+-     content after an org-cycle or similar command.
--     and deletions, matching the semantic of "did the text change".
+-     ensureTextCache is called exclusively from AX getters at human
--     This is the pattern used by WebKit and NSTextView.
+-     interaction speed (never from the redisplay notification path), so
+-     font-lock passes cause zero rebuild cost via the notification path.
 -     Do NOT track BUF_OVERLAY_MODIFF here --- overlay text is not
 -     included in the cached AX text (it is handled separately via
 -     explicit announcements in postAccessibilityNotificationsForFrame).
 -     Including overlay_modiff would silently update cachedOverlayModiff
 -     and prevent the notification dispatch from detecting changes.  */
--  ptrdiff_t chars_modiff = BUF_CHARS_MODIFF (b);
-+  /* Use BUF_MODIFF, not BUF_CHARS_MODIFF, for cache validity.
-+
-+     Fold/unfold commands (org-mode, outline-mode, hideshow-mode) change
-+     text visibility by modifying the 'invisible text property via
 +     `put-text-property' or `add-text-properties'.  These bump BUF_MODIFF
 +     but NOT BUF_CHARS_MODIFF, because no characters are inserted or
 +     deleted.  Using only BUF_CHARS_MODIFF would serve stale AX text
@@ -262,12 +208,16 @@ index 8e5cc7e1d7..8ef344d9fe 100644
 +     as if it were visible, or miss newly revealed content entirely.
 +
 +     BUF_MODIFF is bumped by all buffer modifications including
-+     text-property changes (e.g. font-lock face assignments), causing a
++     text-property changes (e.g. font-lock face assignments).  The
-+     full text-cache rebuild on each redisplay cycle.  This is acceptable
++     per-rebuild cost is O(visible-buffer-text), but `ensureTextCache'
-+     because `ensureTextCache' is only called when VoiceOver queries
++     is called exclusively from AX getters (accessibilityValue,
-+     accessibilityValue or related AX properties --- which happens at
++     accessibilitySelectedTextRange, etc.) which run at human interaction
-+     human interaction speed, not at redisplay speed.  The per-rebuild
++     speed --- not from the redisplay notification path.  Font-lock
-+     cost is O(visible-buffer-text).
++     passes do not call this method, so the rebuild cost per font-lock
++     cycle is zero.  The redisplay notification path (postAccessibility-
++     NotificationsForFrame:) uses cachedText directly without calling
++     ensureTextCache; granularity detection falls back gracefully when
++     the cache is absent.
 +
 +     Do NOT use BUF_OVERLAY_MODIFF alone: org-mode >= 29 (org-fold-core)
 +     uses text properties, not overlays, for folding, so
@@ -275,155 +225,117 @@ index 8e5cc7e1d7..8ef344d9fe 100644
 +     like hl-line-mode bump BUF_OVERLAY_MODIFF on every
 +     post-command-hook, yielding the same per-keystroke rebuild cost as
 +     BUF_MODIFF, with none of its correctness guarantee.  */
-+  ptrdiff_t modiff = BUF_MODIFF (b);
+   ptrdiff_t modiff = BUF_MODIFF (b);
    ptrdiff_t pt = BUF_PT (b);
    NSUInteger textLen = cachedText ? [cachedText length] : 0;
--  if (cachedText && cachedTextModiff == chars_modiff
+@@ -8061,9 +8190,8 @@ included in the cached AX text (it is handled separately via
-+  if (cachedText && cachedTextModiff == modiff
-       && cachedTextStart == BUF_BEGV (b)
-       && pt >= cachedTextStart
-       && (textLen == 0
-@@ -8039,7 +8192,7 @@ included in the cached AX text (it is handled separately via
-     {
-       [cachedText release];
-       cachedText = [text retain];
--      cachedTextModiff = chars_modiff;
-+      cachedTextModiff = modiff;
-       cachedTextStart = start;
- 
-       if (visibleRuns)
-@@ -8051,9 +8204,9 @@ included in the cached AX text (it is handled separately via
  	 Walk the cached text once, recording the start offset of each
  	 line.  Uses NSString lineRangeForRange: --- O(N) in the total
  	 text --- but this loop runs only on cache rebuild, which is
--	 gated on BUF_CHARS_MODIFF: actual character insertions or
+-	 gated on BUF_MODIFF.  Font-lock passes trigger a rebuild only
--	 deletions.  Font-lock (text property changes) does not trigger
+-	 when called from AX getters (human interaction speed), never
--	 a rebuild, so the hot path (cursor movement, redisplay) never
+-	 from the notification path.  */
-+	 gated on BUF_MODIFF changes.  Rebuilds happen when any buffer
++	 gated on BUF_MODIFF changes, ensuring the line index always
-+	 modification occurs (including fold/unfold), ensuring the line
++	 matches the currently visible text (including after fold/unfold).  */
-+	 index always matches the currently visible text.
- 	 enters this code.  */
        if (lineStartOffsets)
  	xfree (lineStartOffsets);
-@@ -8108,7 +8261,7 @@ - (NSUInteger)accessibilityIndexForCharpos:(ptrdiff_t)charpos
+       lineStartOffsets = NULL;
-   /* Binary search: runs are sorted by charpos (ascending).  Find the
+@@ -8579,26 +8707,26 @@ - (NSInteger)accessibilityInsertionPointLineNumber
-      run whose [charpos, charpos+length) range contains the target,
-      or the nearest run after an invisible gap.  O(log n) instead of
--     O(n) --- matters for org-mode with many folded sections.  */
-+     O(n) --- matters for org-mode with many folded sections.  */
-   NSUInteger lo = 0, hi = visibleRunCount;
-   while (lo < hi)
-     {
-@@ -8157,10 +8310,10 @@ by run length (visible window), not total buffer size.  */
- 
- /* Convert accessibility string index to buffer charpos.
-    Safe to call from any thread: uses only cachedText (NSString) and
--   visibleRuns --- no Lisp calls.  */
-+   visibleRuns --- no Lisp calls.  */
- - (ptrdiff_t)charposForAccessibilityIndex:(NSUInteger)ax_idx
- {
--  /* May be called from AX server thread --- synchronize.  */
-+  /* May be called from AX server thread --- synchronize.  */
-   @synchronized (self)
-   {
-   if (visibleRunCount == 0)
-@@ -8202,7 +8355,7 @@ the slow path (composed character sequence walk), which is
- 	  return cp;
- 	}
-     }
--  /* Past end --- return last charpos.  */
-+  /* Past end --- return last charpos.  */
-   if (lo > 0)
-     {
-       ns_ax_visible_run *last = &visibleRuns[visibleRunCount - 1];
-@@ -8224,7 +8377,7 @@ the slow path (composed character sequence walk), which is
-    deadlocking the AX server thread.  This is prevented by:
- 
-      1. validWindow checks WINDOW_LIVE_P and BUFFERP before every
--        Lisp access --- the window and buffer are verified live.
-+        Lisp access --- the window and buffer are verified live.
-      2. All dispatch_sync blocks run on the main thread where no
-         concurrent Lisp code can modify state between checks.
-      3. block_input prevents timer events and process output from
-@@ -8570,6 +8723,50 @@ - (NSInteger)accessibilityInsertionPointLineNumber
    return [self lineForAXIndex:point_idx];
  }
  
+-- (NSRange)accessibilityRangeForLine:(NSInteger)line
 +- (NSString *)accessibilityStringForRange:(NSRange)range
-+{
+ {
-+  if (![NSThread isMainThread])
+   if (![NSThread isMainThread])
-+    {
+     {
+-      __block NSRange result;
 +      __block NSString *result;
-+      dispatch_sync (dispatch_get_main_queue (), ^{
+       dispatch_sync (dispatch_get_main_queue (), ^{
+-	  result = [self accessibilityRangeForLine:line];
 +	  result = [self accessibilityStringForRange:range];
-+	});
+ 	});
-+      return result;
+       return result;
-+    }
+     }
-+  [self ensureTextCache];
+   [self ensureTextCache];
+-  if (!cachedText || line < 0)
+-    return NSMakeRange (NSNotFound, 0);
+-
+-  NSUInteger len = [cachedText length];
+-  if (len == 0)
+-    return (line == 0) ? NSMakeRange (0, 0)
+-		       : NSMakeRange (NSNotFound, 0);
 +  if (!cachedText || range.location + range.length > [cachedText length])
 +    return @"";
 +  return [cachedText substringWithRange:range];
 +}
-+
+ 
+-  return [self rangeForLine:(NSUInteger)line textLength:len];
 +- (NSAttributedString *)accessibilityAttributedStringForRange:(NSRange)range
 +{
 +  NSString *str = [self accessibilityStringForRange:range];
 +  return [[[NSAttributedString alloc] initWithString:str] autorelease];
+ }
+ 
+ - (NSInteger)accessibilityLineForIndex:(NSInteger)index
+@@ -8620,6 +8748,29 @@ - (NSInteger)accessibilityLineForIndex:(NSInteger)index
+     idx = [cachedText length];
+ 
+   return [self lineForAXIndex:idx];
++
 +}
 +
-+- (NSInteger)accessibilityLineForIndex:(NSInteger)index
++- (NSRange)accessibilityRangeForLine:(NSInteger)line
 +{
 +  if (![NSThread isMainThread])
 +    {
-+      __block NSInteger result;
++      __block NSRange result;
 +      dispatch_sync (dispatch_get_main_queue (), ^{
-+	  result = [self accessibilityLineForIndex:index];
++	  result = [self accessibilityRangeForLine:line];
 +	});
 +      return result;
 +    }
 +  [self ensureTextCache];
-+  if (!cachedText || index < 0)
++  if (!cachedText || line < 0)
-+    return 0;
++    return NSMakeRange (NSNotFound, 0);
 +
-+  NSUInteger idx = (NSUInteger) index;
++  NSUInteger len = [cachedText length];
-+  if (idx > [cachedText length])
++  if (len == 0)
-+    idx = [cachedText length];
++    return (line == 0) ? NSMakeRange (0, 0)
++		       : NSMakeRange (NSNotFound, 0);
 +
-+  return [self lineForAXIndex:idx];
++  return [self rangeForLine:(NSUInteger)line textLength:len];
-+
+ }
-+}
+ 
-+
+ - (NSRange)accessibilityRangeForIndex:(NSInteger)index
- - (NSRange)accessibilityRangeForLine:(NSInteger)line
+@@ -8822,7 +8973,7 @@ - (NSRect)accessibilityFrame
- {
-   if (![NSThread isMainThread])
-@@ -8792,7 +8989,7 @@ - (NSRect)accessibilityFrame
  
  
  /* ===================================================================
--   EmacsAccessibilityBuffer (Notifications) --- AX event dispatch
+-   EmacsAccessibilityBuffer (Notifications) — AX event dispatch
 +   EmacsAccessibilityBuffer (Notifications) --- AX event dispatch
  
     These methods notify VoiceOver of text and selection changes.
     Called from the redisplay cycle (postAccessibilityUpdates).
-@@ -8807,7 +9004,7 @@ - (void)postTextChangedNotification:(ptrdiff_t)point
+@@ -8837,7 +8988,7 @@ - (void)postTextChangedNotification:(ptrdiff_t)point
    if (point > self.cachedPoint
        && point - self.cachedPoint == 1)
      {
--      /* Single char inserted --- refresh cache and grab it.  */
+-      /* Single char inserted — refresh cache and grab it.  */
 +      /* Single char inserted --- refresh cache and grab it.  */
        [self invalidateTextCache];
        [self ensureTextCache];
        if (cachedText)
-@@ -8826,7 +9023,7 @@ - (void)postTextChangedNotification:(ptrdiff_t)point
+@@ -8856,7 +9007,7 @@ - (void)postTextChangedNotification:(ptrdiff_t)point
    /* Update cachedPoint here so the selection-move branch does NOT
       fire for point changes caused by edits.  WebKit and Chromium
       never send both ValueChanged and SelectedTextChanged for the
--     same user action --- they are mutually exclusive.  */
+-     same user action — they are mutually exclusive.  */
 +     same user action --- they are mutually exclusive.  */
    self.cachedPoint = point;
  
    NSDictionary *change = @{
-@@ -9220,16 +9417,83 @@ - (void)postAccessibilityNotificationsForFrame:(struct frame *)f
+@@ -9250,16 +9401,80 @@ - (void)postAccessibilityNotificationsForFrame:(struct frame *)f
    BOOL markActive = !NILP (BVAR (b, mark_active));
  
    /* --- Text changed (edit) --- */
@@ -465,9 +377,8 @@ index 8e5cc7e1d7..8ef344d9fe 100644
 +	 font-lock and other modes change BUF_OVERLAY_MODIFF on
 +	 every redisplay, triggering O(overlays) work per keystroke.
 +	 Restrict the scan to minibuffer windows.  */
-+      if (!MINI_WINDOW_P (w))
++      if (MINI_WINDOW_P (w))
-+	goto skip_overlay_scan;
++	{
-+
 +	  int selected_line = -1;
 +	  NSString *candidate
 +	    = ns_ax_selected_overlay_text (b, BUF_BEGV (b), BUF_ZV (b),
@@ -495,60 +406,74 @@ index 8e5cc7e1d7..8ef344d9fe 100644
 +		    NSApp,
 +		    NSAccessibilityAnnouncementRequestedNotification,
 +		    annInfo);
-+
++		}
 +	    }
 +	}
      }
-+  skip_overlay_scan:;
  
    /* --- Cursor moved or selection changed ---
--     Use 'else if' --- edits and selection moves are mutually exclusive
+-     Use 'else if' — edits and selection moves are mutually exclusive
 -     per the WebKit/Chromium pattern.  */
 -  else if (point != self.cachedPoint || markActive != self.cachedMarkActive)
-+     Independent check: the goto above may jump here from the overlay
++     Independent check from the overlay branch above.  */
-+     branch, so this must be a standalone if, not else-if.  */
 +  if (point != self.cachedPoint || markActive != self.cachedMarkActive)
      {
        ptrdiff_t oldPoint = self.cachedPoint;
        BOOL oldMarkActive = self.cachedMarkActive;
-@@ -12403,7 +12667,7 @@ - (int) fullscreenState
+@@ -9277,8 +9492,14 @@ - (void)postAccessibilityNotificationsForFrame:(struct frame *)f
+       bool isCtrlNP = ns_ax_event_is_line_nav_key (&ctrlNP);
+ 
+       /* --- Granularity detection --- */
++      /* Use cached text as-is; do NOT call ensureTextCache here.
++	 ensureTextCache is O(visible-buffer-text) and must not run on
++	 every redisplay cycle.  Using stale cached text for granularity
++	 classification is safe: the worst case is an incorrect
++	 granularity hint (defaulting to unknown), which causes VoiceOver
++	 to make its own determination.  Fresh text is always available
++	 to VoiceOver via the AX getter path (accessibilityValue etc.).  */
+       NSInteger granularity = ns_ax_text_selection_granularity_unknown;
+-      [self ensureTextCache];
+       if (cachedText && oldPoint > 0)
+ 	{
+ 	  NSUInteger tlen = [cachedText length];
+@@ -12438,7 +12659,7 @@ - (int) fullscreenState
  
    if (WINDOW_LEAF_P (w))
      {
--      /* Buffer element --- reuse existing if available.  */
+-      /* Buffer element — reuse existing if available.  */
 +      /* Buffer element --- reuse existing if available.  */
        EmacsAccessibilityBuffer *elem
  	= [existing objectForKey:[NSValue valueWithPointer:w]];
        if (!elem)
-@@ -12437,7 +12701,7 @@ - (int) fullscreenState
+@@ -12472,7 +12693,7 @@ - (int) fullscreenState
      }
    else
      {
--      /* Internal (combination) window --- recurse into children.  */
+-      /* Internal (combination) window — recurse into children.  */
 +      /* Internal (combination) window --- recurse into children.  */
        Lisp_Object child = w->contents;
        while (!NILP (child))
  	{
-@@ -12549,7 +12813,7 @@ - (void)postAccessibilityUpdates
+@@ -12584,7 +12805,7 @@ - (void)postAccessibilityUpdates
    accessibilityUpdating = YES;
  
    /* Detect window tree change (split, delete, new buffer).  Compare
--     FRAME_ROOT_WINDOW --- if it changed, the tree structure changed.  */
+-     FRAME_ROOT_WINDOW — if it changed, the tree structure changed.  */
 +     FRAME_ROOT_WINDOW --- if it changed, the tree structure changed.  */
    Lisp_Object curRoot = FRAME_ROOT_WINDOW (emacsframe);
    if (!EQ (curRoot, lastRootWindow))
      {
-@@ -12558,12 +12822,12 @@ - (void)postAccessibilityUpdates
+@@ -12593,12 +12814,12 @@ - (void)postAccessibilityUpdates
      }
  
    /* If tree is stale, rebuild FIRST so we don't iterate freed
--     window pointers.  Skip notifications for this cycle --- the
+-     window pointers.  Skip notifications for this cycle — the
 +     window pointers.  Skip notifications for this cycle --- the
       freshly-built elements have no previous state to diff against.  */
    if (!accessibilityTreeValid)
      {
        [self rebuildAccessibilityTree];
--      /* Invalidate span cache --- window layout changed.  */
+-      /* Invalidate span cache — window layout changed.  */
 +      /* Invalidate span cache --- window layout changed.  */
        for (EmacsAccessibilityElement *elem in accessibilityElements)
  	if ([elem isKindOfClass: [EmacsAccessibilityBuffer class]])

patches/0008-ns-announce-child-frame-completions-to-VoiceOver.patch

@@ -1,54 +1,49 @@
-From 1e3d3919fd41e4480a02190fb89bee1ef8107d62 Mon Sep 17 00:00:00 2001
+From a6b1def9a83e23cc0e3325d795ac22b46eb16a5d Mon Sep 17 00:00:00 2001
-From: Daneel <daneel@sukany.cz>
+From: Martin Sukany <martin@sukany.cz>
-Date: Mon, 2 Mar 2026 18:49:13 +0100
+Date: Wed, 4 Mar 2026 15:23:56 +0100
-Subject: [PATCH 8/8] ns: announce child frame completion candidates for
+Subject: [PATCH 9/9] ns: announce child frame completions to VoiceOver
- VoiceOver
 
-Child frame popups (Corfu, Company-mode) render completion candidates in
+Child frame popups (Corfu, Company-mode child frames) render completion
-a separate frame whose buffer is not accessible via the minibuffer
+candidates in a separate frame whose buffer is not accessible via the
-overlay path.  This patch scans child frame buffers for selected
+minibuffer overlay path.  This patch scans child frame buffers for
-candidates and announces them via VoiceOver.
+selected candidates and announces them via VoiceOver.
 
 * src/nsterm.h (EmacsView): Add childFrameLastBuffer, childFrameLastModiff,
 childFrameLastCandidate, childFrameCompletionActive, lastEchoCharsModiff
-ivars; remove cachedOverlayModiffForText (unused after BUF_OVERLAY_MODIFF
+ivars.  Initialize childFrameLastBuffer to Qnil in initFrameFromEmacs:.
-removed from ensureTextCache to prevent hl-line-mode O(N) rebuilds).
-Initialize voiceoverSetPoint, childFrameLastBuffer in initFrameFromEmacs:.
 (EmacsAccessibilityBuffer): Add voiceoverSetPoint ivar.
-* src/nsterm.m (ns_ax_buffer_text): Add block_input protection for
+* src/nsterm.m (ns_ax_selected_child_frame_text): New function; scans
-Lisp calls; use record_unwind_protect_void to guarantee unblock_input.
+child frame buffer text for the selected completion candidate.
-(ensureTextCache): Remove BUF_OVERLAY_MODIFF tracking; keep only
-BUF_CHARS_MODIFF.  BUF_OVERLAY_MODIFF caused O(buffer-size) rebuilds
-with hl-line-mode (moves overlay on every post-command-hook).
 (announceChildFrameCompletion): New method; scans child frame buffers
 for selected completion candidates.  Store childFrameLastBuffer as
 BVAR(b, name) (buffer name symbol, GC-reachable via obarray) rather
-than make_lisp_ptr to avoid dangling pointer after buffer kill.
+than a raw buffer pointer to avoid a dangling pointer after buffer kill.
 (postEchoAreaAnnouncementIfNeeded): New method; announces echo area
-changes for commands like C-g.
+changes (e.g., "Wrote file", "Quit") for commands that produce output
+while the minibuffer is inactive.
 (postAccessibilityNotificationsForFrame:): Drive child frame and echo
-area announcements.
+area announcements.  Add voiceoverSetPoint flag and singleLineMove
-* doc/emacs/macos.texi: Fix dangling semicolon in GNUstep paragraph.
+adjacency detection to distinguish VoiceOver-initiated cursor moves
+from Emacs-initiated moves; sequential adjacent-line moves use
+next/previous direction, teleports use discontiguous.  Add didTextChange
+guard to suppress overlay completion announcements while the user types.
+(setAccessibilitySelectedTextRange:): Set voiceoverSetPoint so that the
+subsequent notification cycle uses sequential direction.
+* doc/emacs/macos.texi (VoiceOver Accessibility): Update to document
+echo area announcements and VoiceOver rotor cursor synchronization.
+Remove Zoom section (covered by patch 0000).  Fix dangling paragraph.
 ---
- doc/emacs/macos.texi |  14 +-
+ doc/emacs/macos.texi |  13 +-
- etc/NEWS             |  25 ++-
+ etc/NEWS             |  22 +-
  src/nsterm.h         |  21 ++
- src/nsterm.m         | 514 +++++++++++++++++++++++++++++++++++++++----
+ src/nsterm.m         | 562 +++++++++++++++++++++++++++++++++++++------
- 4 files changed, 510 insertions(+), 64 deletions(-)
+ 4 files changed, 528 insertions(+), 90 deletions(-)
 
 diff --git a/doc/emacs/macos.texi b/doc/emacs/macos.texi
-index 8d4a7825d8..03a657f970 100644
+index 72ac3a9aa9..cf5ed0ff28 100644
 --- a/doc/emacs/macos.texi
 +++ b/doc/emacs/macos.texi
-@@ -278,7 +278,6 @@ restart Emacs to access newly-available services.
+@@ -309,10 +309,15 @@ Shift-modified movement announces selected or deselected text.
- @cindex VoiceOver
- @cindex accessibility (macOS)
- @cindex screen reader (macOS)
--@cindex Zoom, cursor tracking (macOS)
- 
-   When built with the Cocoa interface on macOS, Emacs exposes buffer
- content, cursor position, mode lines, and interactive elements to the
-@@ -309,10 +308,15 @@ Shift-modified movement announces selected or deselected text.
    The @file{*Completions*} buffer announces each completion candidate
  as you navigate, even while keyboard focus remains in the minibuffer.
  
@@ -69,24 +64,20 @@ index 8d4a7825d8..03a657f970 100644
  @vindex ns-accessibility-enabled
    To disable the accessibility interface entirely (for instance, to
 diff --git a/etc/NEWS b/etc/NEWS
-index 7f917f93b2..bbec21b635 100644
+index 7f917f93b2..c6bb4cc5ad 100644
 --- a/etc/NEWS
 +++ b/etc/NEWS
-@@ -88,10 +88,9 @@ When macOS Zoom is enabled (System Settings, Accessibility, Zoom,
+@@ -88,8 +88,7 @@ When macOS Zoom is enabled (System Settings, Accessibility, Zoom,
  Follow keyboard focus), Emacs informs Zoom of the text cursor position
  after every cursor redraw via 'UAZoomChangeFocus'.  The zoomed viewport
  automatically tracks the insertion point across window splits and
 -switches.  Completion frameworks (Vertico, Icomplete, Ivy for overlay
 -candidates; Corfu, Company-box for child frame popups) are also
--tracked: Zoom follows the selected candidate rather than the text
++switches.  Overlay-based and child-frame completion frameworks are also
--cursor during completion.
+ tracked: Zoom follows the selected candidate rather than the text
-+switches.  Overlay-based completion frameworks and child-frame popup completions
+ cursor during completion.
-+are also tracked: Zoom follows the selected candidate rather than the
-+text cursor during completion.
  
- +++
+@@ -4385,16 +4384,19 @@ allowing Emacs users access to speech recognition utilities.
- ** 'line-spacing' now supports specifying spacing above the line.
-@@ -4385,16 +4384,20 @@ allowing Emacs users access to speech recognition utilities.
  Note: Accepting this permission allows the use of system APIs, which may
  send user data to Apple's speech recognition servers.
  
@@ -94,28 +85,28 @@ index 7f917f93b2..bbec21b635 100644
 ++++
  ** VoiceOver accessibility support on macOS.
  Emacs now exposes buffer content, cursor position, and interactive
- elements to the macOS accessibility subsystem (VoiceOver).  This
+-elements to the macOS accessibility subsystem (VoiceOver).  This
 -includes AXBoundsForRange for macOS Zoom cursor tracking, line and
 -word navigation announcements, Tab-navigable interactive spans
 -(buttons, links, completion candidates), and completion announcements
 -for the *Completions* buffer.  The implementation uses a virtual
 -accessibility tree with per-window elements, hybrid SelectedTextChanged
 -and AnnouncementRequested notifications, and thread-safe text caching.
-+includes:
++elements to the macOS accessibility subsystem (VoiceOver).  Standard
-+- Line and word navigation announcements via standard movement keys.
++navigation keys produce speech feedback: arrow keys read characters and
-+- Echo area messages (e.g., "Wrote file", "Git finished") announced
++lines, 'M-f'/'M-b' announce words, and shift-modified movement reports
-+  automatically as they appear, without user interaction.
++selected text.  Echo area messages (e.g., "Wrote file", "Git finished")
-+- VoiceOver rotor cursor synchronization after large programmatic
++are announced automatically without user interaction.  The VoiceOver
-+  jumps (]], M-<, xref, imenu, etc.).
++rotor cursor stays synchronized after large programmatic jumps such as
-+- Tab-navigable interactive spans (buttons, links, completion
++xref, imenu, or Org heading navigation.  Pressing 'TAB' navigates
-+  candidates) within a buffer.
++interactive spans (buttons, links, completion candidates) within a
-+- Completion announcements for the *Completions* buffer, overlay
++buffer.  Completion frameworks that render via overlays or child frames
-+  completion UIs, and child-frame completion popup UIs.
++(Vertico, Ivy, Corfu, etc.) announce the selected candidate.
  Set 'ns-accessibility-enabled' to nil to disable the accessibility
  interface and eliminate the associated overhead.
  
 diff --git a/src/nsterm.h b/src/nsterm.h
-index 21a93bc799..b5c9f84499 100644
+index ff81675bb5..9ee6c86f18 100644
 --- a/src/nsterm.h
 +++ b/src/nsterm.h
 @@ -504,9 +504,20 @@ typedef struct ns_ax_visible_run
@@ -164,43 +155,23 @@ index 21a93bc799..b5c9f84499 100644
  @end
  
 diff --git a/src/nsterm.m b/src/nsterm.m
-index 8ef344d9fe..1acb64630a 100644
+index 209b8a0a1d..13696786ab 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
-@@ -1275,7 +1275,13 @@ If a completion candidate is selected (overlay or child frame),
+@@ -1287,6 +1287,12 @@ If a completion candidate is selected (overlay or child frame),
  static void
  ns_zoom_track_completion (struct frame *f, EmacsView *view)
  {
--  if (!ns_accessibility_enabled || !ns_zoom_enabled_p ())
 +  /* Zoom cursor tracking is controlled exclusively by
 +     ns_zoom_enabled_p ().  We do NOT gate on ns_accessibility_enabled:
 +     users can run Zoom without VoiceOver, and those users should still
 +     get completion-candidate tracking.  ns_accessibility_enabled is
 +     only set when a screen reader (VoiceOver or similar) activates the
 +     AX layer; it has no bearing on the Zoom feature.  */
-+  if (!ns_zoom_enabled_p ())
+   if (!ns_zoom_enabled_p ())
      return;
    if (!WINDOWP (f->selected_window))
-     return;
+@@ -7392,6 +7398,117 @@ visual line index for Zoom (skip whitespace-only lines
-@@ -1393,7 +1399,7 @@ so the visual offset is (ov_line + 1) * line_h from
-      (zoomCursorUpdated is NO).  */
- #if defined (MAC_OS_X_VERSION_MIN_REQUIRED) \
-     && MAC_OS_X_VERSION_MIN_REQUIRED >= 101000
--  if (ns_accessibility_enabled && view && !view->zoomCursorUpdated
-+  if (view && !view->zoomCursorUpdated
-       && ns_zoom_enabled_p ()
-       && !NSIsEmptyRect (view->lastCursorRect))
-     {
-@@ -3571,7 +3577,7 @@ EmacsView pixels (AppKit, flipped, top-left origin)
- 
- #if defined (MAC_OS_X_VERSION_MIN_REQUIRED) \
-     && MAC_OS_X_VERSION_MIN_REQUIRED >= 101000
--	if (ns_accessibility_enabled && ns_zoom_enabled_p ())
-+	if (ns_zoom_enabled_p ())
- 	  {
- 	    NSRect windowRect = [view convertRect:r toView:nil];
- 	    NSRect screenRect
-@@ -7407,6 +7413,117 @@ visual line index for Zoom (skip whitespace-only lines
  
    return nil;
  }
@@ -247,17 +218,17 @@ index 8ef344d9fe..1acb64630a 100644
 +     The data pointer is used only in this loop, before Lisp calls.  */
 +  const unsigned char *data = SDATA (str);
 +  ptrdiff_t byte_len = SBYTES (str);
-+  /* 128 lines is a safe upper bound for a completion child frame.
++  /* 512 lines is a safe upper bound for a completion child frame.
 +     The caller rejects buffers larger than 10,000 characters
 +     (BUF_ZV(b) - BUF_BEGV(b) > 10000 guard in announceChildFrameCompletion),
-+     so the worst case is ~10 KB / 1 byte per line < 128.  If a future
++     so the worst case is ~10 KB / 1 byte per line < 512.  If a future
-+     caller removes that guard, lines beyond 128 are silently skipped;  */
++     caller removes that guard, lines beyond 512 are silently skipped;  */
-+  ptrdiff_t line_starts[128];
++  ptrdiff_t line_starts[512];
-+  ptrdiff_t line_ends[128];
++  ptrdiff_t line_ends[512];
 +  int nlines = 0;
 +  ptrdiff_t char_pos = 0, byte_pos = 0, lstart = 0;
 +
-+  while (byte_pos < byte_len && nlines < 128)
++  while (byte_pos < byte_len && nlines < 512)
 +    {
 +      if (data[byte_pos] == '\n')
 +	{
@@ -275,7 +246,7 @@ index 8ef344d9fe..1acb64630a 100644
 +	byte_pos++;
 +      char_pos++;
 +    }
-+  if (char_pos > lstart && nlines < 128)
++  if (char_pos > lstart && nlines < 512)
 +    {
 +      line_starts[nlines] = lstart;
 +      line_ends[nlines] = char_pos;
@@ -291,7 +262,7 @@ index 8ef344d9fe..1acb64630a 100644
 +      Lisp_Object face
 +	= Fget_char_property (make_fixnum (buf_pos), Qface, buf_obj);
 +
-+      if (ns_ax_face_is_selected (face))
++      if (ns_face_name_matches_selected_p (face))
 +	{
 +	  Lisp_Object line
 +	    = Fsubstring_no_properties (str,
@@ -318,7 +289,22 @@ index 8ef344d9fe..1acb64630a 100644
  /* Build accessibility text for window W, skipping invisible text.
     Populates *OUT_START with the buffer start charpos.
     Populates *OUT_RUNS with an array of visible runs and *OUT_NRUNS
-@@ -8605,6 +8726,11 @@ - (void)setAccessibilitySelectedTextRange:(NSRange)range
+@@ -7425,9 +7542,13 @@ visual line index for Zoom (skip whitespace-only lines
+     return @"";
+ 
+   specpdl_ref count = SPECPDL_INDEX ();
++  /* block_input must precede record_unwind_protect_void (unblock_input):
++     if anything between SPECPDL_INDEX and block_input were to throw,
++     the unwind handler would call unblock_input without a matching
++     block_input, corrupting the input-blocking reference count.  */
++  block_input ();
+   record_unwind_current_buffer ();
+   record_unwind_protect_void (unblock_input);
+-  block_input ();
+   if (b != current_buffer)
+     set_buffer_internal_1 (b);
+ 
+@@ -8589,6 +8710,11 @@ - (void)setAccessibilitySelectedTextRange:(NSRange)range
  
    [self ensureTextCache];
  
@@ -330,7 +316,7 @@ index 8ef344d9fe..1acb64630a 100644
    specpdl_ref count = SPECPDL_INDEX ();
    record_unwind_current_buffer ();
    /* Ensure block_input is always matched by unblock_input even if
-@@ -9053,20 +9179,38 @@ - (void)postFocusedCursorNotification:(ptrdiff_t)point
+@@ -9037,20 +9163,38 @@ - (void)postFocusedCursorNotification:(ptrdiff_t)point
         && granularity
  	  == ns_ax_text_selection_granularity_character);
  
@@ -379,7 +365,7 @@ index 8ef344d9fe..1acb64630a 100644
    ns_ax_post_notification_with_info (
      self,
      NSAccessibilitySelectedTextChangedNotification,
-@@ -9166,12 +9310,17 @@ user expectation ("w" jumps to next word and reads it).  */
+@@ -9150,12 +9294,17 @@ user expectation ("w" jumps to next word and reads it).  */
  	}
      }
  
@@ -392,7 +378,7 @@ index 8ef344d9fe..1acb64630a 100644
 +     - C-n/C-p: SelectedTextChanged carries granularity=line, but
 +       VoiceOver processes those keystrokes specially and may not
 +       produce speech; the explicit announcement is the reliable path.
-+     - Discontiguous jumps (]], M-<, xref, imenu, ...): granularity=line
++     - Discontiguous jumps (]], M-<, xref, imenu, …): granularity=line
 +       in the notification is omitted (see above) so VoiceOver will
 +       not announce automatically; this explicit announcement fills
 +       the gap.
@@ -402,7 +388,7 @@ index 8ef344d9fe..1acb64630a 100644
    if (cachedText
        && granularity == ns_ax_text_selection_granularity_line)
      {
-@@ -9236,6 +9385,11 @@ - (void)postCompletionAnnouncementForBuffer:(struct buffer *)b
+@@ -9220,6 +9369,11 @@ - (void)postCompletionAnnouncementForBuffer:(struct buffer *)b
  
    block_input ();
    specpdl_ref count2 = SPECPDL_INDEX ();
@@ -414,7 +400,7 @@ index 8ef344d9fe..1acb64630a 100644
    record_unwind_protect_void (unblock_input);
    record_unwind_current_buffer ();
    if (b != current_buffer)
-@@ -9412,12 +9566,29 @@ - (void)postAccessibilityNotificationsForFrame:(struct frame *)f
+@@ -9396,12 +9550,29 @@ - (void)postAccessibilityNotificationsForFrame:(struct frame *)f
    if (!b)
      return;
  
@@ -444,7 +430,7 @@ index 8ef344d9fe..1acb64630a 100644
    if (modiff != self.cachedModiff)
      {
        self.cachedModiff = modiff;
-@@ -9431,6 +9602,7 @@ Text property changes (e.g. face updates from
+@@ -9415,6 +9586,7 @@ Text property changes (e.g. face updates from
  	{
  	  self.cachedCharsModiff = chars_modiff;
  	  [self postTextChangedNotification:point];
@@ -452,12 +438,12 @@ index 8ef344d9fe..1acb64630a 100644
  	}
      }
  
-@@ -9453,8 +9625,15 @@ frameworks like Vertico bump BOTH BUF_MODIFF (via text property
+@@ -9437,41 +9609,49 @@ frameworks like Vertico bump BOTH BUF_MODIFF (via text property
  	 displayed in the minibuffer.  In normal editing buffers,
  	 font-lock and other modes change BUF_OVERLAY_MODIFF on
  	 every redisplay, triggering O(overlays) work per keystroke.
 -	 Restrict the scan to minibuffer windows.  */
--      if (!MINI_WINDOW_P (w))
+-      if (MINI_WINDOW_P (w))
 +	 Restrict the scan to minibuffer windows.
 +	 Skip overlay announcements when the user just typed a character
 +	 (didTextChange).  Completion frameworks update their overlay
@@ -467,10 +453,71 @@ index 8ef344d9fe..1acb64630a 100644
 +	 characters inaudible.  VoiceOver should read the overlay
 +	 candidate only when the user navigates (C-n/C-p), not types.  */
 +      if (!MINI_WINDOW_P (w) || didTextChange)
- 	goto skip_overlay_scan;
++	goto skip_overlay_scan;
++
++      int selected_line = -1;
++      NSString *candidate
++	= ns_ax_selected_overlay_text (b, BUF_BEGV (b), BUF_ZV (b),
++				       &selected_line);
++      if (candidate)
+ 	{
+-	  int selected_line = -1;
+-	  NSString *candidate
+-	    = ns_ax_selected_overlay_text (b, BUF_BEGV (b), BUF_ZV (b),
+-					   &selected_line);
+-	  if (candidate)
++	  /* Deduplicate: only announce when the candidate changed.  */
++	  if (![candidate isEqualToString:
++			    self.cachedCompletionAnnouncement])
+ 	    {
+-	      /* Deduplicate: only announce when the candidate changed.  */
+-	      if (![candidate isEqualToString:
+-			        self.cachedCompletionAnnouncement])
+-		{
+-		  self.cachedCompletionAnnouncement = candidate;
+-
+-		  /* Announce the candidate text directly via NSApp.
+-		     Do NOT post SelectedTextChanged --- that would cause
+-		     VoiceOver to read the AX text at the cursor position
+-		     (the minibuffer input line), not the overlay candidate.
+-		     AnnouncementRequested with High priority interrupts
+-		     any current speech and announces our text.  */
+-		  NSDictionary *annInfo = @{
+-		    NSAccessibilityAnnouncementKey: candidate,
+-		    NSAccessibilityPriorityKey:
+-		      @(NSAccessibilityPriorityHigh)
+-		  };
+-		  ns_ax_post_notification_with_info (
+-		    NSApp,
+-		    NSAccessibilityAnnouncementRequestedNotification,
+-		    annInfo);
+-		}
++	      self.cachedCompletionAnnouncement = candidate;
++
++	      /* Announce the candidate text directly via NSApp.
++		 Do NOT post SelectedTextChanged --- that would cause
++		 VoiceOver to read the AX text at the cursor position
++		 (the minibuffer input line), not the overlay candidate.
++		 AnnouncementRequested with High priority interrupts
++		 any current speech and announces our text.  */
++	      NSDictionary *annInfo = @{
++		NSAccessibilityAnnouncementKey: candidate,
++		NSAccessibilityPriorityKey:
++		  @(NSAccessibilityPriorityHigh)
++	      };
++	      ns_ax_post_notification_with_info (
++		NSApp,
++		NSAccessibilityAnnouncementRequestedNotification,
++		annInfo);
+ 	    }
+ 	}
+     }
  
-       int selected_line = -1;
++ skip_overlay_scan:
-@@ -9500,7 +9679,18 @@ frameworks like Vertico bump BOTH BUF_MODIFF (via text property
+   /* --- Cursor moved or selection changed ---
+      Independent check from the overlay branch above.  */
+   if (point != self.cachedPoint || markActive != self.cachedMarkActive)
+@@ -9481,7 +9661,18 @@ frameworks like Vertico bump BOTH BUF_MODIFF (via text property
        self.cachedPoint = point;
        self.cachedMarkActive = markActive;
  
@@ -490,15 +537,15 @@ index 8ef344d9fe..1acb64630a 100644
        NSInteger direction = ns_ax_text_selection_direction_discontiguous;
        if (point > oldPoint)
  	direction = ns_ax_text_selection_direction_next;
-@@ -9512,6 +9702,7 @@ frameworks like Vertico bump BOTH BUF_MODIFF (via text property
+@@ -9500,6 +9691,7 @@ granularity hint (defaulting to unknown), which causes VoiceOver
- 
+ 	 to make its own determination.  Fresh text is always available
-       /* --- Granularity detection --- */
+ 	 to VoiceOver via the AX getter path (accessibilityValue etc.).  */
        NSInteger granularity = ns_ax_text_selection_granularity_unknown;
 +      BOOL singleLineMove = NO;
-       [self ensureTextCache];
        if (cachedText && oldPoint > 0)
  	{
-@@ -9526,7 +9717,18 @@ frameworks like Vertico bump BOTH BUF_MODIFF (via text property
+ 	  NSUInteger tlen = [cachedText length];
+@@ -9513,7 +9705,18 @@ to VoiceOver via the AX getter path (accessibilityValue etc.).  */
  	  NSRange newLine = [cachedText lineRangeForRange:
  				  NSMakeRange (newIdx, 0)];
  	  if (oldLine.location != newLine.location)
@@ -518,12 +565,16 @@ index 8ef344d9fe..1acb64630a 100644
  	  else
  	    {
  	      NSUInteger dist = (newIdx > oldIdx
-@@ -9548,34 +9750,23 @@ frameworks like Vertico bump BOTH BUF_MODIFF (via text property
+@@ -9535,38 +9738,23 @@ to VoiceOver via the AX getter path (accessibilityValue etc.).  */
  	  granularity = ns_ax_text_selection_granularity_line;
  	}
  
+-      /* Treat all moves as Emacs-initiated until voiceoverSetPoint
+-	 tracking is introduced (subsequent patch).  */
+-      BOOL emacsMovedCursor = YES;
+-
 -      /* Programmatic jumps that cross a line boundary (]], [[, M-<,
--	 xref, imenu, ...) are discontiguous: the cursor teleported to an
+-	 xref, imenu, …) are discontiguous: the cursor teleported to an
 -	 arbitrary position, not one sequential step forward/backward.
 -	 Reporting AXTextSelectionDirectionDiscontiguous causes VoiceOver
 -	 to re-anchor its rotor browse cursor at the new
@@ -566,7 +617,7 @@ index 8ef344d9fe..1acb64630a 100644
  	{
  	  NSWindow *win = [self.emacsView window];
  	  if (win)
-@@ -9734,6 +9925,13 @@ - (NSRect)accessibilityFrame
+@@ -9725,6 +9913,13 @@ - (NSRect)accessibilityFrame
    if (vis_start >= vis_end)
      return @[];
  
@@ -580,7 +631,7 @@ index 8ef344d9fe..1acb64630a 100644
    block_input ();
    specpdl_ref blk_count = SPECPDL_INDEX ();
    record_unwind_protect_void (unblock_input);
-@@ -10040,6 +10238,10 @@ - (void)dealloc
+@@ -10032,6 +10227,10 @@ - (void)dealloc
  #endif
  
    [accessibilityElements release];
@@ -591,7 +642,7 @@ index 8ef344d9fe..1acb64630a 100644
    [[self menu] release];
    [super dealloc];
  }
-@@ -11489,6 +11691,9 @@ - (instancetype) initFrameFromEmacs: (struct frame *)f
+@@ -11481,6 +11680,9 @@ - (instancetype) initFrameFromEmacs: (struct frame *)f
  
    windowClosing = NO;
    processingCompose = NO;
@@ -601,7 +652,7 @@ index 8ef344d9fe..1acb64630a 100644
    scrollbarsNeedingUpdate = 0;
    fs_state = FULLSCREEN_NONE;
    fs_before_fs = next_maximized = -1;
-@@ -12797,6 +13002,161 @@ - (id)accessibilityFocusedUIElement
+@@ -12789,6 +12991,156 @@ - (id)accessibilityFocusedUIElement
     The existing elements carry cached state (modiff, point) from the
     previous redisplay cycle.  Rebuilding first would create fresh
     elements with current values, making change detection impossible.  */
@@ -702,11 +753,6 @@ index 8ef344d9fe..1acb64630a 100644
 +  childFrameLastBuffer = BVAR (b, name);
 +  childFrameLastModiff = modiff;
 +
-+  /* BUFFER_LIVE_P(b) is already checked at entry (line above the
-+     EQ comparison).  No code between that check and here can kill
-+     the buffer, so this second check is redundant.  */
-+  eassert (BUFFER_LIVE_P (b));
-+
 +  /* Skip buffers larger than a typical completion popup.
 +     This avoids scanning eldoc, which-key, or other child
 +     frame buffers that are not completion UIs.  */
@@ -763,7 +809,7 @@ index 8ef344d9fe..1acb64630a 100644
  - (void)postAccessibilityUpdates
  {
    NSTRACE ("[EmacsView postAccessibilityUpdates]");
-@@ -12807,11 +13167,69 @@ - (void)postAccessibilityUpdates
+@@ -12799,11 +13151,69 @@ - (void)postAccessibilityUpdates
  
    /* Re-entrance guard: VoiceOver callbacks during notification posting
       can trigger redisplay, which calls ns_update_end, which calls us