GNU logs - #3347, boring messages


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Date: Fri, 22 May 2009 11:54:58 +0900
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From: YAMAMOTO Mitsuharu <mituharu@HIDDEN>
To: emacs-pretest-bug@HIDDEN
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Mouse dragging over a text in the default face causes unnecessary
updates in other windows displaying the same buffer.

Steps to reproduce:

  1. Invoke "Quartz Debug.app" on Mac OS X and check the "Flash screen
     updates" button.
  2. $ emacs -Q -D
  3. C-x 2
  4. Drag the mouse over the *scratch* buffer text in the first
     window.

Result:

  The text not only in the first window but also the other one is
  flashed whereas the latter doesn't need updates.  The flashed area
  corresponds to the extended/shrunken part of the region in the first
  window.

The updates in the second window do not happen if the text is in
non-default face (e.g., start with "emacs -Q" instead of "emacs -Q
-D").

I can't observe this phenomenon on Emacs 22.3.

				     YAMAMOTO Mitsuharu
				mituharu@HIDDEN

In GNU Emacs 23.0.93.1 (powerpc-apple-darwin9.6.0, X toolkit)
 of 2009-05-22 on yamamoto-mitsuharu-no-power-mac-g5.local
Windowing system distributor `The X.Org Foundation', version 11.0.10402000
configured using `configure  '--without-jpeg' '--without-gif' '--without-tiff''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: ja_JP.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
  tooltip-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t




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From: help-debbugs@HIDDEN (Emacs bug Tracking System)
To: YAMAMOTO Mitsuharu <mituharu@HIDDEN>
Subject: bug#3347: Acknowledgement (23.0.93; unnecessary display updates 
 with mouse-drag-region)
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Thank you for filing a new bug report with Emacs.

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3347: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D3347
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To: control <at> debbugs.gnu.org
Subject: Re: bug#3347: 23.0.93; unnecessary display updates with mouse-drag-region
Message-ID: <jwv8wkpahhw.fsf-monnier+emacsbugreports@HIDDEN>
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severity 3347 serious
thanks




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Subject: bug#3347: 23.0.93;	unnecessary display updates with mouse-drag-region
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Message-ID: <wlzld4efyq.wl%mituharu@HIDDEN>
From: YAMAMOTO Mitsuharu <mituharu@HIDDEN>
To: 3347 <at> debbugs.gnu.org
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>>>>> On Fri, 22 May 2009 11:54:58 +0900, YAMAMOTO Mitsuharu <mituharu@HIDDEN> said:

> Mouse dragging over a text in the default face causes unnecessary
> updates in other windows displaying the same buffer.

> Steps to reproduce:

>   1. Invoke "Quartz Debug.app" on Mac OS X and check the "Flash screen
>      updates" button.
>   2. $ emacs -Q -D
>   3. C-x 2
>   4. Drag the mouse over the *scratch* buffer text in the first
>      window.

> Result:

>   The text not only in the first window but also the other one is
>   flashed whereas the latter doesn't need updates.  The flashed area
>   corresponds to the extended/shrunken part of the region in the first
>   window.

> The updates in the second window do not happen if the text is in
> non-default face (e.g., start with "emacs -Q" instead of "emacs -Q
> -D").

> I can't observe this phenomenon on Emacs 22.3.

I tried some older versions and found that the change below made the
difference.

				     YAMAMOTO Mitsuharu
				mituharu@HIDDEN

2008-07-08  Chong Yidong  <cyd@HIDDEN>

	* xfaces.c (Finternal_merge_in_global_face): Save merged
	attributes for the default face back into the face vector.

--- xfaces.c	2008/07/06 03:51:06	1.404
+++ xfaces.c	2008/07/08 17:27:28	1.405
@@ -3966,7 +3966,7 @@
     else if (! UNSPECIFIEDP (gvec[i]))
       lvec[i] = gvec[i];
 
-  /* If the default face was changed, realize it again, and update the
+  /* If the default face was changed, update the face cache and the
      `font' frame parameter.  */
   if (EQ (face, Qdefault))
     {
@@ -3977,9 +3977,12 @@
       /* This can be NULL (e.g., in batch mode).  */
       if (oldface)
 	{
+	  /* Ensure that the face vector is fully specified by merging
+	     the previously-cached vector.  */
 	  bcopy (oldface->lface, attrs, sizeof attrs);
 	  merge_face_vectors (f, lvec, attrs, 0);
-	  newface = realize_face (c, attrs, DEFAULT_FACE_ID);
+	  bcopy (attrs, lvec, sizeof attrs);
+	  newface = realize_face (c, lvec, DEFAULT_FACE_ID);
 
 	  if ((! UNSPECIFIEDP (gvec[LFACE_FAMILY_INDEX])
 	       || ! UNSPECIFIEDP (gvec[LFACE_FOUNDRY_INDEX])



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From: help-debbugs@HIDDEN (Emacs bug Tracking System)
To: YAMAMOTO Mitsuharu <mituharu@HIDDEN>
Subject: bug#3347: Info received (bug#3347: 23.0.93;	unnecessary display
 updates with mouse-drag-region)
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Date: Sat, 23 May 2009 02:05:06 +0000


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3347: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D3347
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Subject: bug#3347: 23.0.93; unnecessary display updates with mouse-drag-region
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From: Chong Yidong <cyd@HIDDEN>
To: YAMAMOTO Mitsuharu <mituharu@HIDDEN>
Cc: 3347 <at> debbugs.gnu.org
Date: Wed, 10 Jun 2009 12:50:23 -0400
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> Mouse dragging over a text in the default face causes unnecessary
> updates in other windows displaying the same buffer.
>
> I tried some older versions and found that the change below made the
> difference.
>
> 2008-07-08  Chong Yidong  <cyd@HIDDEN>
>
>             * xfaces.c (Finternal_merge_in_global_face): Save merged
>             attributes for the default face back into the face vector.

I don't see why.  Is Finternal_merge_in_global_face called when you
perform mouse dragging?  It should not be (and on my current GNU/Linux
build it isn't).



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From: help-debbugs@HIDDEN (Emacs bug Tracking System)
To: Chong Yidong <cyd@HIDDEN>
Subject: bug#3347: Info received (23.0.93; unnecessary display updates
 with mouse-drag-region)
Message-ID: <handler.3347.B3347.124465262410379.ackinfo@HIDDEN>
References: <87d49c6njk.fsf@HIDDEN>
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Reply-To: 3347 <at> debbugs.gnu.org
Date: Wed, 10 Jun 2009 17:00:03 +0000


Thank you for the additional information you have supplied regarding
this bug report.

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3347: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D3347
Emacs Bug Tracking System
Contact help-debbugs@HIDDEN with problems


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From: YAMAMOTO Mitsuharu <mituharu@HIDDEN>
To: Chong Yidong <cyd@HIDDEN>
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>>>>> On Wed, 10 Jun 2009 12:50:23 -0400, Chong Yidong <cyd@HIDDEN> said:

>> Mouse dragging over a text in the default face causes unnecessary
>> updates in other windows displaying the same buffer.
>>
>> I tried some older versions and found that the change below made the
>> difference.
>>
>> 2008-07-08  Chong Yidong  <cyd@HIDDEN>
>>
>>             * xfaces.c (Finternal_merge_in_global_face): Save merged
>>             attributes for the default face back into the face vector.

> I don't see why.  Is Finternal_merge_in_global_face called when you
> perform mouse dragging?  It should not be (and on my current GNU/Linux
> build it isn't).

No.  The breakpoint didn't hit during mouse dragging.

				     YAMAMOTO Mitsuharu
				mituharu@HIDDEN



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severity 5754 serious
severity 2056 important
severity 2503 important
severity 3347 important
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severity 3347 normal
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YAMAMOTO Mitsuharu <mituharu@HIDDEN> writes:

> Mouse dragging over a text in the default face causes unnecessary
> updates in other windows displaying the same buffer.
>
> Steps to reproduce:
>
>   1. Invoke "Quartz Debug.app" on Mac OS X and check the "Flash screen
>      updates" button.
>   2. $ emacs -Q -D
>   3. C-x 2
>   4. Drag the mouse over the *scratch* buffer text in the first
>      window.

(This was 11 years ago.)

The Quartz Debug app doesn't seem to exist on Macos any more, so I'm
unable to try the recipe.

Do you still see this problem in more recent versions of Emacs?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no




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On Mon, 14 Sep 2020 23:44:39 +0900,
Lars Ingebrigtsen wrote:
> 
> YAMAMOTO Mitsuharu <mituharu@HIDDEN> writes:
> 
> > Mouse dragging over a text in the default face causes unnecessary
> > updates in other windows displaying the same buffer.
> >
> > Steps to reproduce:
> >
> >   1. Invoke "Quartz Debug.app" on Mac OS X and check the "Flash screen
> >      updates" button.
> >   2. $ emacs -Q -D
> >   3. C-x 2
> >   4. Drag the mouse over the *scratch* buffer text in the first
> >      window.
> 
> (This was 11 years ago.)
> 
> The Quartz Debug app doesn't seem to exist on Macos any more, so I'm
> unable to try the recipe.

It is now included in "Additional Tools for Xcode", which can be
downloaded from https://developer.apple.com/download/more/ (You might
need to sign in with your Apple ID.)


> Do you still see this problem in more recent versions of Emacs?

Yes, but you need to disable double-buffering with
(set-frame-paremter nil 'inhibit-double-buffering t) .
Otherwise, Quartz Debug thinks the whole frame is updated.

				     YAMAMOTO Mitsuharu
				mituharu@HIDDEN




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From: Lars Ingebrigtsen <larsi@HIDDEN>
References: <wl4ovd6e4d.wl%mituharu@HIDDEN>
 <87h7s08lk8.fsf@HIDDEN>
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 Content preview:  Lars Ingebrigtsen <larsi@HIDDEN> writes: > Do you still
 see this problem in more recent versions of Emacs? More information was
 requested, 
 but no response was given within a few months, so I'm closing this bug report.
 If the problem still exists, please respond to this email and we'll reopen
 the bug report [...] 
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Lars Ingebrigtsen <larsi@HIDDEN> writes:

> Do you still see this problem in more recent versions of Emacs?

More information was requested, but no response was given within a few
months, so I'm closing this bug report.  If the problem still exists,
please respond to this email and we'll reopen the bug report.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no




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Date: Wed, 09 Dec 2020 16:11:48 +0100
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To: control <at> debbugs.gnu.org
From: Lars Ingebrigtsen <larsi@HIDDEN>
Subject: control message for bug #3347
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close 3347 
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X-Loop: help-debbugs@HIDDEN
Subject: bug#3347: 23.0.93; unnecessary display updates with mouse-drag-region
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Cc: 3347 <at> debbugs.gnu.org
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From: Lars Ingebrigtsen <larsi@HIDDEN>
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 <87h7s08lk8.fsf@HIDDEN> <87pn3j10b7.fsf@HIDDEN>
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Date: Wed, 09 Dec 2020 17:39:08 +0100
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 Content preview: Lars Ingebrigtsen <larsi@HIDDEN> writes: > Lars
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 <larsi@HIDDEN> writes: > >> Do you still see this problem in more recent
 versions of Emacs? > > More information was requested, but no response was
 given within a few > months, s [...] 
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Lars Ingebrigtsen <larsi@HIDDEN> writes:

> Lars Ingebrigtsen <larsi@HIDDEN> writes:
>
>> Do you still see this problem in more recent versions of Emacs?
>
> More information was requested, but no response was given within a few
> months, so I'm closing this bug report.  If the problem still exists,
> please respond to this email and we'll reopen the bug report.

Sorry; this was closed by mistake; reopening.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no




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tags 3347 - moreinfo
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