GNU logs - #4023, boring messages

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Subject: bug#4023: mwheel.el uses (point) instead of point-before-scroll
Reply-To: balducci@HIDDEN, 4023 <at> debbugs.gnu.org
Resent-From: gabriele balducci <balducci@HIDDEN>
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Date: Mon, 03 Aug 2009 18:26:51 +0200
Message-ID: <22673.1249316835@HIDDEN>
From: gabriele balducci <balducci@HIDDEN>

Hello,

apologies if I am wrong.

Just upgraded emacs to 23.1 and noted the following issue, related
(apparently) to mwheel.el.

Here is how to (hopefully) reproduce the problem.

In an emacs window (under X):

=> set the point with mouse-1
=> select a region with mouse-3 some lines below
=> now scroll down with the mouse wheel so that the bottom of the
   selected region scrolls `out' of the upper edge of the emacs window
   (the highlighted region must disappear)
=> extend the region by mouse-3 again
=> paste the region with mouse-2 somewhere (e.g. in a clean buffer)

    Result:
    only the text between the *visible* top of the window and the end of
    the region has been pasted. I.e. all works as if the beginning of
    the selected region had moved the first line of the visible portion
    of the buffer.

This contrasts with the behavior in emacs-22.3, where extending the
region while scrolling down with the wheel used to work as expected
(by me): the contents of the region started from the point set with
mouse-1 at the beginning.

The (correct) behavior in 23.1 is obtained if scrolling is performed
with the side bar, instead of the wheel (and also if the scroll with
the wheel does not make the bottom of the region fly out of the upper
window edge)

Actually, the following new lines have appeared in mwheel.el from 22.3
to 23.1:

         (opoint (with-current-buffer buffer
                   (when (eq (car-safe transient-mark-mode) 'only)
                     (point))))


and I seem to understand that this is the origin of the problem.

In fact, the following change:

diff -c ./emacs-23.1/lisp/mwheel.el.ORIG ./emacs-23.1/lisp/mwheel.el
*** ./emacs-23.1/lisp/mwheel.el.ORIG    Mon Aug  3 17:05:23 2009
--- ./emacs-23.1/lisp/mwheel.el Mon Aug  3 17:05:23 2009
***************
*** 195,201 ****
         (buffer (window-buffer curwin))
         (opoint (with-current-buffer buffer
                   (when (eq (car-safe transient-mark-mode) 'only)
!                    (point))))
           (mods
          (delq 'click (delq 'double (delq 'triple (event-modifiers event)))))
           (amt (assoc mods mouse-wheel-scroll-amount)))
--- 195,201 ----
         (buffer (window-buffer curwin))
         (opoint (with-current-buffer buffer
                   (when (eq (car-safe transient-mark-mode) 'only)
!                    point-before-scroll)))
           (mods
          (delq 'click (delq 'double (delq 'triple (event-modifiers event)))))
           (amt (assoc mods mouse-wheel-scroll-amount)))


fixes everything for me.

Do not know if this is the best solution (I am only an occasional lisp
programmer); I do not even know if the object of my report is actually
a problem or instead is something wanted (if so, I would be surprised).

Apologies for the length of the message and a BIG THANKS for emacs, of
course!


ciao
gabriele

-----

In GNU Emacs 23.1.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.17.6)
 of 2009-08-03 on dschgrazlin1
Windowing system distributor `The XFree86 Project, Inc', version 11.0.40800000
configured using `configure  '--prefix=/usr''

Important settings:
  value of $LC_ALL: C
  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: C
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: t

Major mode: Text

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

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From: help-debbugs@HIDDEN (Emacs bug Tracking System)
To: balducci@HIDDEN
Subject: bug#4023: Acknowledgement (mwheel.el uses (point) instead of
 point-before-scroll)
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Reply-To: 4023 <at> debbugs.gnu.org
Date: Mon, 03 Aug 2009 16:10:09 +0000

Thank you for filing a new bug report with Emacs.

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4023: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D4023
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reassign 4326 emacs,ns
merge 4261 4434
merge 1589 3359 4207
merge 3829 4077
tags 4781 + patch
tags 4747 + patch
tags 4579 + patch
tags 4471 + patch
tags 4434 + patch
tags 4234 + patch
tags 4221 + patch
tags 4147 + patch
tags 4144 + patch
tags 4139 + patch
tags 4023 + patch
tags 4736 + moreinfo unreproducible
tags 4547 + notabug
tags 4451 + notabug
tags 4448 + moreinfo
tags 4427 + moreinfo
tags 4373 + notabug
tags 4360 + notabug
tags 4271 + moreinfo
tags 4236 + moreinfo
tags 4143 + moreinfo unreproducible
tags 4120 + moreinfo unreproducible
tags 4070 + moreinfo unreproducible
severity 4422 wishlist
severity 4396 minor
severity 4394 minor
severity 4341 wishlist
severity 4300 minor
severity 4263 minor
severity 4178 minor
severity 4172 wishlist
severity 4110 wishlist
severity 4056 wishlist
close 4772
close 4700
close 4599
close 4515
close 4463
close 4445
close 4395
close 4334
close 4289
close 4219
quit

Message sent to bug-submit-list@HIDDEN, Emacs Bugs <bug-gnu-emacs@HIDDEN>:

X-Loop: owner@HIDDEN
Subject: bug#4023: mwheel.el uses (point) instead of point-before-scroll
Reply-To: Chong Yidong <cyd@HIDDEN>, 4023 <at> debbugs.gnu.org
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From: Chong Yidong <cyd@HIDDEN>
To: Glenn Morris  <rgm@HIDDEN>,
        gabriele balducci <balducci@HIDDEN>
Cc: 4023 <at> debbugs.gnu.org
Date: Fri, 04 Dec 2009 21:46:36 -0500
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> Just upgraded emacs to 23.1 and noted the following issue, related
> (apparently) to mwheel.el.
>
> Here is how to (hopefully) reproduce the problem.
>
> In an emacs window (under X):
>
> => set the point with mouse-1
> => select a region with mouse-3 some lines below
> => now scroll down with the mouse wheel so that the bottom of the
>    selected region scrolls `out' of the upper edge of the emacs window
>    (the highlighted region must disappear)
> => extend the region by mouse-3 again
> => paste the region with mouse-2 somewhere (e.g. in a clean buffer)
>
>     Result:
>     only the text between the *visible* top of the window and the end of
>     the region has been pasted. I.e. all works as if the beginning of
>     the selected region had moved the first line of the visible portion
>     of the buffer.
>
> This contrasts with the behavior in emacs-22.3, where extending the
> region while scrolling down with the wheel used to work as expected
> (by me): the contents of the region started from the point set with
> mouse-1 at the beginning.
>
> The (correct) behavior in 23.1 is obtained if scrolling is performed
> with the side bar, instead of the wheel (and also if the scroll with
> the wheel does not make the bottom of the region fly out of the upper
> window edge)

This change was made in response to a complaint by Glenn Morris, about
the behavior you desire:

http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg00409.html

  Double-click with left mouse to select the word "tree" from "This
  directory tree...". The word "tree" is highlighted with region face.

  Scroll down with mouse-wheel so that "tree" goes off the top of the
  screen.

  Scroll back up with mouse-wheel.

  Now the region has been extended to cover a lot more text. The further
  I scroll down initially, the more is highlighted.

I have no preference for either behavior, because I don't use the mouse
wheel much.  Either way, we should probably make the scrollbar and mouse
wheel behavior consistent, though.

Glenn, what do you think?

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From: help-debbugs@HIDDEN (Emacs bug Tracking System)
To: Chong Yidong <cyd@HIDDEN>
Subject: bug#4023: Info received (mwheel.el uses (point) instead of
 point-before-scroll)
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Date: Sat, 05 Dec 2009 02:55:06 +0000

Thank you for the additional information you have supplied regarding
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4023: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D4023
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From: Glenn Morris <rgm@HIDDEN>
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In-Reply-To: <87iqcm5e9f.fsf@HIDDEN> (Chong Yidong's message of
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Chong Yidong wrote:

> I have no preference for either behavior, because I don't use the mouse
> wheel much.  Either way, we should probably make the scrollbar and mouse
> wheel behavior consistent, though.

Emacs 22.3 seems to make both me and the OP happy.

When transient-mark-mode is off, it does not have the issue I
complained about. When transient-mark-mode is on, it behaves the way
the OP wants. (So by default 22.3 does NOT behave the way the OP asks
for, AFAICS.)

I complained when the behaviour I disliked (and I do find it really
annoying) started happening even when t-m-m was off.

So is there a way to make us both happy, by getting the 22.3 behaviour
back? I don't care at all what the defaults are, so long as I can get
the behaviour I like somehow.

Message sent to bug-submit-list@HIDDEN, Emacs Bugs <bug-gnu-emacs@HIDDEN>:

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To: rgm@HIDDEN, cyd@HIDDEN, 4023 <at> debbugs.gnu.org
In-reply-to: Your message of "Sat, 05 Dec 2009 16:06:32 EST."
             <q9ocmdceqv.fsf@HIDDEN>
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Date: Wed, 09 Dec 2009 12:42:20 +0100
Message-ID: <26573.1260358964@HIDDEN>
From: gabriele balducci <balducci@HIDDEN>


Hi there

> > I have no preference for either behavior, because I don't use the mouse
> > wheel much.  Either way, we should probably make the scrollbar and mouse
> > wheel behavior consistent, though.

I do not use the wheel very much too, but the occasions on which I use
it are just when I want to mark a wide region  by scrolling!

Actually, I did not realize that someone might want to:

=> mark a (small) region
=> scroll down with the wheel
=> paste the region contents previously selected

and, of course, this is just the opposite of what I normally do!

> 
> Emacs 22.3 seems to make both me and the OP happy.
> 
> When transient-mark-mode is off, it does not have the issue I
> complained about. When transient-mark-mode is on, it behaves the way
> the OP wants. (So by default 22.3 does NOT behave the way the OP asks
> for, AFAICS.)

Actually, I used to raise transient-mark-mode on at emacs startup

> 
> I complained when the behaviour I disliked (and I do find it really
> annoying) started happening even when t-m-m was off.
> 
> So is there a way to make us both happy, by getting the 22.3 behaviour
> back? I don't care at all what the defaults are, so long as I can get
> the behaviour I like somehow.

Me too.

I am not a lisp/emacs developer, so do not know whether this might be a
good/feasible option: what about a t/nil configurable variable such as
wheel-scroll-extends-region?

thanks and ciao
gabriele

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To: gabriele balducci <balducci@HIDDEN>
Subject: bug#4023: Info received (mwheel.el uses (point) instead of
 point-before-scroll)
Message-ID: <handler.4023.B4023.126035730629281.ackinfo@HIDDEN>
References: <26573.1260358964@HIDDEN>
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Reply-To: 4023 <at> debbugs.gnu.org
Date: Wed, 09 Dec 2009 11:20:04 +0000

Thank you for the additional information you have supplied regarding
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4023: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D4023
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From: Stefan Kangas <stefan@HIDDEN>
Date: Wed, 9 Oct 2019 02:39:08 +0200
Message-ID: <CADwFkm=MvKOYSX3cs6BfvszS_eHPpPLi-E32SYh6UDrY+ycQqw@HIDDEN>
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 Content preview:  severity 4023 wishlist quit severity 4023 wishlist quit 
 Content analysis details:   (2.3 points, 10.0 required)
 pts rule name              description
 ---- ---------------------- --------------------------------------------------
 0.0 FREEMAIL_FROM          Sender email is commonly abused enduser mail
 provider (stefankangas[at]gmail.com)
 0.2 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level
 mail domains are different
 -0.0 SPF_PASS               SPF: sender matches SPF record
 0.0 SPF_HELO_NONE          SPF: HELO does not publish an SPF Record
 0.0 HTML_MESSAGE           BODY: HTML included in message
 -0.0 RCVD_IN_DNSWL_NONE     RBL: Sender listed at https://www.dnswl.org/,
 no trust [209.85.214.173 listed in list.dnswl.org]
 0.0 FREEMAIL_FORGED_FROMDOMAIN 2nd level domains in From and
 EnvelopeFrom freemail headers are different
 2.0 BLANK_SUBJECT          Subject is present but empty
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 Content preview:  severity 4023 wishlist quit severity 4023 wishlist quit 
 
 Content analysis details:   (1.3 points, 10.0 required)
 
  pts rule name              description
 ---- ---------------------- --------------------------------------------------
 -0.0 RCVD_IN_DNSWL_NONE     RBL: Sender listed at https://www.dnswl.org/,
                              no trust
                             [209.85.214.173 listed in list.dnswl.org]
  0.0 FREEMAIL_FROM          Sender email is commonly abused enduser mail
                             provider (stefankangas[at]gmail.com)
  0.2 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level
                             mail domains are different
 -0.0 SPF_PASS               SPF: sender matches SPF record
  0.0 SPF_HELO_NONE          SPF: HELO does not publish an SPF Record
  0.0 HTML_MESSAGE           BODY: HTML included in message
  0.0 FREEMAIL_FORGED_FROMDOMAIN 2nd level domains in From and
                             EnvelopeFrom freemail headers are
                             different
 -1.0 MAILING_LIST_MULTI     Multiple indicators imply a widely-seen list
                             manager
  2.0 BLANK_SUBJECT          Subject is present but empty

--000000000000f2772805946f8383
Content-Type: text/plain; charset="UTF-8"

severity 4023 wishlist
quit

--000000000000f2772805946f8383
Content-Type: text/html; charset="UTF-8"

<div dir="ltr"><div>severity 4023 wishlist</div><div>quit</div><div><br></div></div>

--000000000000f2772805946f8383--

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