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Subject: bug#79787: 31.0.50; Unexpected point adjustment when passing over text that has 'invisible property and an overlay with 'display on top
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Hello,

Consider the following reproducer

 (let (ovs)
   (with-current-buffer (generate-new-buffer "*temp*")
     (display-buffer-below-selected (current-buffer) nil)
     (insert "\n\n12345789")
     (goto-char (point-min))
     (with-silent-modifications
       (search-forward "1")
       (backward-char)
       (put-text-property (+ (point) 2) (+ (point) 4) 'invisible t)
       (read-char "Press any key (part of 123456789 hidden)")
       (dolist (offset '(0 1 2 3 4 5 6 7 8))
	 (push (make-overlay (+ offset (point)) (+ offset (point) 1)) ovs)
	 (overlay-put (car ovs) 'display (copy-sequence "!")))
       (message "NOW, move cursor across 123456789 string, observe point jumping across some !"))))

When we put an overlay with 'display property on top of 'invisible text,
the overlay takes precedence and the text from 'display is visible on
place of the underlying text.

However, point adjustment does not seem to account for this scenario -
the point gets adjusted to bypass 'invisible text anyway, which is
unexpected as the point jumps over the visible overlay.

This issue has been originally reported in https://orgmode.org/list/87ms50z1bp.fsf@localhost


In GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, cairo version
 1.18.4) of 2025-04-28 built on localhost
Repository revision: 509cbe1c35b3dd005a53ac041f9c87ee53b8e115
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101018
System Description: Gentoo Linux

-- 
Ihor Radchenko // yantar92,
Org mode maintainer,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Ihor Radchenko <yantar92@HIDDEN>
Subject: bug#79787: Acknowledgement (31.0.50; Unexpected point adjustment
 when passing over text that has 'invisible property and an overlay with
 'display on top)
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Date: Sat, 08 Nov 2025 10:44:02 +0000

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Subject: bug#79787: 31.0.50; Unexpected point adjustment when passing over text that has 'invisible property and an overlay with 'display on top
Resent-From: Eli Zaretskii <eliz@HIDDEN>
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To: Ihor Radchenko <yantar92@HIDDEN>, Stefan Monnier <monnier@HIDDEN>
Cc: 79787 <at> debbugs.gnu.org
Date: Sun, 09 Nov 2025 12:18:02 +0200
Message-Id: <86zf8v4ihx.fsf@HIDDEN>
From: Eli Zaretskii <eliz@HIDDEN>
In-Reply-To: <87wm40954s.fsf@localhost> (message from Ihor Radchenko on Sat,
 08 Nov 2025 10:43:37 +0000)
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> From: Ihor Radchenko <yantar92@HIDDEN>
> Date: Sat, 08 Nov 2025 10:43:37 +0000
> 
>  (let (ovs)
>    (with-current-buffer (generate-new-buffer "*temp*")
>      (display-buffer-below-selected (current-buffer) nil)
>      (insert "\n\n12345789")
>      (goto-char (point-min))
>      (with-silent-modifications
>        (search-forward "1")
>        (backward-char)
>        (put-text-property (+ (point) 2) (+ (point) 4) 'invisible t)
>        (read-char "Press any key (part of 123456789 hidden)")
>        (dolist (offset '(0 1 2 3 4 5 6 7 8))
> 	 (push (make-overlay (+ offset (point)) (+ offset (point) 1)) ovs)
> 	 (overlay-put (car ovs) 'display (copy-sequence "!")))
>        (message "NOW, move cursor across 123456789 string, observe point jumping across some !"))))
> 
> When we put an overlay with 'display property on top of 'invisible text,
> the overlay takes precedence and the text from 'display is visible on
> place of the underlying text.
> 
> However, point adjustment does not seem to account for this scenario -
> the point gets adjusted to bypass 'invisible text anyway, which is
> unexpected as the point jumps over the visible overlay.
> 
> This issue has been originally reported in https://orgmode.org/list/87ms50z1bp.fsf@localhost

Point adjustment is not the only (nor the main) player here.  The
other, more important player is the display-engine code which decides
where to show the cursor when the text at point is not on display.

The patch at the end of this message improves the situation, I hope
enough to close this issue.  It fixes the following simpler test case:

  ;; -*- lexical-binding: t -*-
  (switch-to-buffer (get-buffer-create "foo"))
  (erase-buffer)
  (insert "\n\n1234567890")
  (goto-char (point-min))
  (search-forward "1")
  (backward-char)
  (put-text-property (+ (point) 2) (+ (point) 4) 'invisible t)
  (overlay-put (make-overlay (+ (point) 2) (+ (point) 3)) 'display (copy-sequence "!!!"))

in that we now correctly jump the cursor when point moves across the
display string "!!!".  The patch also (AFAIU) solves the original
recipe from the bug reported to the Org list.  The test case that
started the bug report, which sets 9 different adjacent
display-property overlays, is improved, in that we only skip 1 "!",
not more, but doesn't solve it completely.  However, given that these
are display strings that we normally jump over anyway, I don't see the
result as a problem, unless a real-life case exists where it does
cause problems.

Please try the patch and tell if it causes any left-overs.

Stefan, any comments or better ideas?

diff --git a/src/keyboard.c b/src/keyboard.c
index a9cbd10..fe2484b 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -1841,10 +1841,22 @@ adjust_point_for_property (ptrdiff_t last_pt, bool modified)
 	 point-motion hooks, intangibility, etc.  */
 	  eassert (PT == beg || PT == end);
 #endif
-
 	  /* Pretend the area doesn't exist if the buffer is not
-	     modified.  */
-	  if (!modified && !ellipsis && beg < end)
+	     modified, but only if the invisible text is not shown on
+	     display.  If it _is_ shown, we don't need to move point,
+	     since the normal display of the cursor will DTRT.
+	     Invisible text might be "shown on display" if there's an
+	     overlay with a replacing display property on the same text:
+	     then whatever is specified by the display property will be
+	     shown instead of the invisible text.  */
+	  bool shown =
+	    !NILP (val = get_char_property_and_overlay
+			   (make_fixnum (beg), Qdisplay, selected_window,
+			    &overlay))
+	    && display_prop_intangible_p (val, overlay, beg, CHAR_TO_BYTE (beg))
+	    && OVERLAYP (overlay);
+
+	  if (!modified && !shown && !ellipsis && beg < end)
 	    {
 	      if (last_pt == beg && PT == end && end < ZV)
 		(check_composition = check_display = true, SET_PT (end + 1));

Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#79787: 31.0.50; Unexpected point adjustment when passing over text that has 'invisible property and an overlay with 'display on top
Resent-From: Eli Zaretskii <eliz@HIDDEN>
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Cc: 79787 <at> debbugs.gnu.org
Date: Sun, 09 Nov 2025 15:32:07 +0200
Message-Id: <86wm3z49ig.fsf@HIDDEN>
From: Eli Zaretskii <eliz@HIDDEN>
In-Reply-To: <86zf8v4ihx.fsf@HIDDEN> (message from Eli Zaretskii on Sun, 09
 Nov 2025 12:18:02 +0200)
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> Cc: 79787 <at> debbugs.gnu.org
> Date: Sun, 09 Nov 2025 12:18:02 +0200
> From: Eli Zaretskii <eliz@HIDDEN>
> 
> > From: Ihor Radchenko <yantar92@HIDDEN>
> > Date: Sat, 08 Nov 2025 10:43:37 +0000
> > 
> >  (let (ovs)
> >    (with-current-buffer (generate-new-buffer "*temp*")
> >      (display-buffer-below-selected (current-buffer) nil)
> >      (insert "\n\n12345789")
> >      (goto-char (point-min))
> >      (with-silent-modifications
> >        (search-forward "1")
> >        (backward-char)
> >        (put-text-property (+ (point) 2) (+ (point) 4) 'invisible t)
> >        (read-char "Press any key (part of 123456789 hidden)")
> >        (dolist (offset '(0 1 2 3 4 5 6 7 8))
> > 	 (push (make-overlay (+ offset (point)) (+ offset (point) 1)) ovs)
> > 	 (overlay-put (car ovs) 'display (copy-sequence "!")))
> >        (message "NOW, move cursor across 123456789 string, observe point jumping across some !"))))
> > 
> > When we put an overlay with 'display property on top of 'invisible text,
> > the overlay takes precedence and the text from 'display is visible on
> > place of the underlying text.
> > 
> > However, point adjustment does not seem to account for this scenario -
> > the point gets adjusted to bypass 'invisible text anyway, which is
> > unexpected as the point jumps over the visible overlay.
> > 
> > This issue has been originally reported in https://orgmode.org/list/87ms50z1bp.fsf@localhost
> 
> Point adjustment is not the only (nor the main) player here.  The
> other, more important player is the display-engine code which decides
> where to show the cursor when the text at point is not on display.
> 
> The patch at the end of this message improves the situation, I hope
> enough to close this issue.  It fixes the following simpler test case:
> 
>   ;; -*- lexical-binding: t -*-
>   (switch-to-buffer (get-buffer-create "foo"))
>   (erase-buffer)
>   (insert "\n\n1234567890")
>   (goto-char (point-min))
>   (search-forward "1")
>   (backward-char)
>   (put-text-property (+ (point) 2) (+ (point) 4) 'invisible t)
>   (overlay-put (make-overlay (+ (point) 2) (+ (point) 3)) 'display (copy-sequence "!!!"))
> 
> in that we now correctly jump the cursor when point moves across the
> display string "!!!".  The patch also (AFAIU) solves the original
> recipe from the bug reported to the Org list.  The test case that
> started the bug report, which sets 9 different adjacent
> display-property overlays, is improved, in that we only skip 1 "!",
> not more, but doesn't solve it completely.  However, given that these
> are display strings that we normally jump over anyway, I don't see the
> result as a problem, unless a real-life case exists where it does
> cause problems.

Scratch that and use the improved patch below, which also fix3es the
original recipe.

diff --git a/src/keyboard.c b/src/keyboard.c
index a9cbd10..ac69d8f 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -1726,7 +1726,7 @@ adjust_point_for_property (ptrdiff_t last_pt, bool modified)
      deleting characters around point.  */
   bool check_composition = ! modified;
   bool check_display = true, check_invisible = true;
-  ptrdiff_t orig_pt = PT;
+  ptrdiff_t orig_pt = PT, pt_before_invis = PT;
 
   eassert (XBUFFER (XWINDOW (selected_window)->contents) == current_buffer);
 
@@ -1765,6 +1765,7 @@ adjust_point_for_property (ptrdiff_t last_pt, bool modified)
 	  check_composition = check_invisible = true;
 	}
       check_display = false;
+      pt_before_invis = PT;
       if (check_invisible && PT > BEGV && PT < ZV)
 	{
 	  int inv;
@@ -1841,10 +1842,28 @@ adjust_point_for_property (ptrdiff_t last_pt, bool modified)
 	 point-motion hooks, intangibility, etc.  */
 	  eassert (PT == beg || PT == end);
 #endif
-
 	  /* Pretend the area doesn't exist if the buffer is not
-	     modified.  */
-	  if (!modified && !ellipsis && beg < end)
+	     modified, but only if the invisible text is not shown on
+	     display.  If it _is_ shown, we don't need to move point,
+	     since the normal display of the cursor will DTRT.
+	     Invisible text might be "shown on display" if there's an
+	     overlay with a replacing display property on the same text:
+	     then whatever is specified by the display property will be
+	     shown instead of the invisible text.  */
+	  bool shown =
+	    !NILP (val = get_char_property_and_overlay
+			   (make_fixnum (beg), Qdisplay, selected_window,
+			    &overlay))
+	    && display_prop_intangible_p (val, overlay, beg, CHAR_TO_BYTE (beg))
+	    && OVERLAYP (overlay);
+
+	  /* If the "invisible" text is shown, undo any point
+             adjustments due to invisible property, as cursor
+             positioning will do the job better.  */
+	  if (shown)
+	    SET_PT (pt_before_invis);
+
+	  if (!modified && !shown && !ellipsis && beg < end)
 	    {
 	      if (last_pt == beg && PT == end && end < ZV)
 		(check_composition = check_display = true, SET_PT (end + 1));

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Subject: bug#79787: 31.0.50; Unexpected point adjustment when passing over text that has 'invisible property and an overlay with 'display on top
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Eli Zaretskii <eliz@HIDDEN> writes:

> Scratch that and use the improved patch below, which also fix3es the
> original recipe.
>
> diff --git a/src/keyboard.c b/src/keyboard.c

Works for me. Both with my recipe and with the original bug report for
Org mode.

>  +	    !NILP (val = get_char_property_and_overlay
>  +			   (make_fixnum (beg), Qdisplay, selected_window,
>  +			    &overlay))
>  +	    && display_prop_intangible_p (val, overlay, beg, CHAR_TO_BYTE (beg))
>  +	    && OVERLAYP (overlay); # <<<<<<<<<<-------------

What if there is a display *text* property?

(let (ovs)
   (with-current-buffer (generate-new-buffer "*temp*")
     (display-buffer-below-selected (current-buffer) nil)
     (insert "\n\n12345789")
     (goto-char (point-min))
     (with-silent-modifications
       (search-forward "1")
       (backward-char)
       (put-text-property (+ (point) 2) (+ (point) 4) 'invisible t)
       (read-char "Press any key (part of 123456789 hidden)")
       (dolist (offset '(0 1 2 3 4 5 6 7))
	 (put-text-property (+ offset (point)) (+ offset (point) 1) 'display (copy-sequence "!")))
       (message "NOW, move cursor across 123456789 string, observe point jumping across some !"))))

-- 
Ihor Radchenko // yantar92,
Org mode maintainer,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>

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Subject: bug#79787: 31.0.50; Unexpected point adjustment when passing over text that has 'invisible property and an overlay with 'display on top
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> From: Ihor Radchenko <yantar92@HIDDEN>
> Cc: monnier@HIDDEN, 79787 <at> debbugs.gnu.org
> Date: Sun, 16 Nov 2025 11:26:56 +0000
> 
> Eli Zaretskii <eliz@HIDDEN> writes:
> 
> > Scratch that and use the improved patch below, which also fix3es the
> > original recipe.
> >
> > diff --git a/src/keyboard.c b/src/keyboard.c
> 
> Works for me. Both with my recipe and with the original bug report for
> Org mode.

Thanks, will install shortly.

> >  +	    !NILP (val = get_char_property_and_overlay
> >  +			   (make_fixnum (beg), Qdisplay, selected_window,
> >  +			    &overlay))
> >  +	    && display_prop_intangible_p (val, overlay, beg, CHAR_TO_BYTE (beg))
> >  +	    && OVERLAYP (overlay); # <<<<<<<<<<-------------
> 
> What if there is a display *text* property?

A display text property cannot "reveal" the invisible text as overlays
do.  The display engine examines the 'display' properties before
'invisible', and if it sees a 'display' property, 'invisible' on the
same or "enclosed" text is effectively ignored (not examined at all).
And if the invisible text encloses the one with 'display' property,
then the 'display' property is ignored.  So in this case, we will show
either the value of the 'display' property, and nothing for the
invisible text, or nothing at all.  This is unlike what happens with
overlays.

So I don't think that case is relevant, but if you can come up with an
example of any problems in the case of text properties, please show
it.

Message sent to bug-gnu-emacs@HIDDEN:

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Eli Zaretskii <eliz@HIDDEN> writes:

> So I don't think that case is relevant, but if you can come up with an
> example of any problems in the case of text properties, please show
> it.

What about the modified reproducer I provided?
You will still get the "jumpy" cursor behavior over the visible "!".

-- 
Ihor Radchenko // yantar92,
Org mode maintainer,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>

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Subject: bug#79787: closed (31.0.50; Unexpected point adjustment when
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 'display on top)
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Your message dated Sun, 16 Nov 2025 16:40:18 +0200
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and subject line Re: bug#79787: 31.0.50; Unexpected point adjustment when p=
assing over text that has 'invisible property and an overlay with 'display =
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has caused the debbugs.gnu.org bug report #79787,
regarding 31.0.50; Unexpected point adjustment when passing over text that =
has 'invisible property and an overlay with 'display on top
to be marked as done.

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Subject: 31.0.50; Unexpected point adjustment when passing over text that
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Hello,

Consider the following reproducer

 (let (ovs)
   (with-current-buffer (generate-new-buffer "*temp*")
     (display-buffer-below-selected (current-buffer) nil)
     (insert "\n\n12345789")
     (goto-char (point-min))
     (with-silent-modifications
       (search-forward "1")
       (backward-char)
       (put-text-property (+ (point) 2) (+ (point) 4) 'invisible t)
       (read-char "Press any key (part of 123456789 hidden)")
       (dolist (offset '(0 1 2 3 4 5 6 7 8))
	 (push (make-overlay (+ offset (point)) (+ offset (point) 1)) ovs)
	 (overlay-put (car ovs) 'display (copy-sequence "!")))
       (message "NOW, move cursor across 123456789 string, observe point jumping across some !"))))

When we put an overlay with 'display property on top of 'invisible text,
the overlay takes precedence and the text from 'display is visible on
place of the underlying text.

However, point adjustment does not seem to account for this scenario -
the point gets adjusted to bypass 'invisible text anyway, which is
unexpected as the point jumps over the visible overlay.

This issue has been originally reported in https://orgmode.org/list/87ms50z1bp.fsf@localhost


In GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, cairo version
 1.18.4) of 2025-04-28 built on localhost
Repository revision: 509cbe1c35b3dd005a53ac041f9c87ee53b8e115
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101018
System Description: Gentoo Linux

-- 
Ihor Radchenko // yantar92,
Org mode maintainer,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>



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Subject: Re: bug#79787: 31.0.50;
 Unexpected point adjustment when passing over text that has
 'invisible property and an overlay with 'display on top
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> Cc: 79787 <at> debbugs.gnu.org, monnier@HIDDEN
> Date: Sun, 16 Nov 2025 16:23:50 +0200
> From: Eli Zaretskii <eliz@HIDDEN>
> 
> > From: Ihor Radchenko <yantar92@HIDDEN>
> > Cc: monnier@HIDDEN, 79787 <at> debbugs.gnu.org
> > Date: Sun, 16 Nov 2025 11:26:56 +0000
> > 
> > Eli Zaretskii <eliz@HIDDEN> writes:
> > 
> > > Scratch that and use the improved patch below, which also fix3es the
> > > original recipe.
> > >
> > > diff --git a/src/keyboard.c b/src/keyboard.c
> > 
> > Works for me. Both with my recipe and with the original bug report for
> > Org mode.
> 
> Thanks, will install shortly.

Now installed on the master branch, and closing the bug.


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To: Ihor Radchenko <yantar92@HIDDEN>
Subject: bug#79787: closed (Re: bug#79787: 31.0.50; Unexpected point
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Your bug report

#79787: 31.0.50; Unexpected point adjustment when passing over text that ha=
s 'invisible property and an overlay with 'display on top

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 79787 <at> debbugs.gnu.org.

--=20
79787: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D79787
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 Nov 2025 16:23:50 +0200)
Subject: Re: bug#79787: 31.0.50;
 Unexpected point adjustment when passing over text that has
 'invisible property and an overlay with 'display on top
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> Cc: 79787 <at> debbugs.gnu.org, monnier@HIDDEN
> Date: Sun, 16 Nov 2025 16:23:50 +0200
> From: Eli Zaretskii <eliz@HIDDEN>
> 
> > From: Ihor Radchenko <yantar92@HIDDEN>
> > Cc: monnier@HIDDEN, 79787 <at> debbugs.gnu.org
> > Date: Sun, 16 Nov 2025 11:26:56 +0000
> > 
> > Eli Zaretskii <eliz@HIDDEN> writes:
> > 
> > > Scratch that and use the improved patch below, which also fix3es the
> > > original recipe.
> > >
> > > diff --git a/src/keyboard.c b/src/keyboard.c
> > 
> > Works for me. Both with my recipe and with the original bug report for
> > Org mode.
> 
> Thanks, will install shortly.

Now installed on the master branch, and closing the bug.


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Subject: 31.0.50; Unexpected point adjustment when passing over text that
 has 'invisible property and an overlay with 'display on top
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Hello,

Consider the following reproducer

 (let (ovs)
   (with-current-buffer (generate-new-buffer "*temp*")
     (display-buffer-below-selected (current-buffer) nil)
     (insert "\n\n12345789")
     (goto-char (point-min))
     (with-silent-modifications
       (search-forward "1")
       (backward-char)
       (put-text-property (+ (point) 2) (+ (point) 4) 'invisible t)
       (read-char "Press any key (part of 123456789 hidden)")
       (dolist (offset '(0 1 2 3 4 5 6 7 8))
	 (push (make-overlay (+ offset (point)) (+ offset (point) 1)) ovs)
	 (overlay-put (car ovs) 'display (copy-sequence "!")))
       (message "NOW, move cursor across 123456789 string, observe point jumping across some !"))))

When we put an overlay with 'display property on top of 'invisible text,
the overlay takes precedence and the text from 'display is visible on
place of the underlying text.

However, point adjustment does not seem to account for this scenario -
the point gets adjusted to bypass 'invisible text anyway, which is
unexpected as the point jumps over the visible overlay.

This issue has been originally reported in https://orgmode.org/list/87ms50z1bp.fsf@localhost


In GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, cairo version
 1.18.4) of 2025-04-28 built on localhost
Repository revision: 509cbe1c35b3dd005a53ac041f9c87ee53b8e115
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101018
System Description: Gentoo Linux

-- 
Ihor Radchenko // yantar92,
Org mode maintainer,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>



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> From: Ihor Radchenko <yantar92@HIDDEN>
> Cc: monnier@HIDDEN, 79787 <at> debbugs.gnu.org
> Date: Sun, 16 Nov 2025 14:32:13 +0000
> 
> Eli Zaretskii <eliz@HIDDEN> writes:
> 
> > So I don't think that case is relevant, but if you can come up with an
> > example of any problems in the case of text properties, please show
> > it.
> 
> What about the modified reproducer I provided?
> You will still get the "jumpy" cursor behavior over the visible "!".

Why do you think that's a problem?

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From: Ihor Radchenko <yantar92@HIDDEN>
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Eli Zaretskii <eliz@HIDDEN> writes:
>> What about the modified reproducer I provided?
>> You will still get the "jumpy" cursor behavior over the visible "!".
>
> Why do you think that's a problem?

Because the cursor behavior is unexpected. From the point of view of
users, it should not matter whether display/invisible combination is
caused by overlays or just by text properties.

-- 
Ihor Radchenko // yantar92,
Org mode maintainer,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>

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Subject: bug#79787: 31.0.50; Unexpected point adjustment when passing over text that has 'invisible property and an overlay with 'display on top
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> From: Ihor Radchenko <yantar92@HIDDEN>
> Cc: monnier@HIDDEN, 79787 <at> debbugs.gnu.org
> Date: Sun, 16 Nov 2025 15:05:29 +0000
> 
> Eli Zaretskii <eliz@HIDDEN> writes:
> >> What about the modified reproducer I provided?
> >> You will still get the "jumpy" cursor behavior over the visible "!".
> >
> > Why do you think that's a problem?
> 
> Because the cursor behavior is unexpected. From the point of view of
> users, it should not matter whether display/invisible combination is
> caused by overlays or just by text properties.

How it is more unexpected than the jump across invisible text, or
across a display string?

Last modified: Sun, 16 Nov 2025 15:15:02 UTC

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