GNU bug report logs - #65980
30.0.50; C-e behaves surprisingly in minibuffer

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Stephen Berman <stephen.berman <at> gmx.net>
Subject: bug#65980: closed (Re: bug#65980: 30.0.50; C-e behaves
 surprisingly in minibuffer)
Date: Sat, 16 Sep 2023 12:03:02 +0000

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Your bug report

#65980: 30.0.50; C-e behaves surprisingly in minibuffer

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 65980 <at> debbugs.gnu.org.

-- 
65980: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=65980
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Stephen Berman <stephen.berman <at> gmx.net>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 65980-done <at> debbugs.gnu.org
Subject: Re: bug#65980: 30.0.50; C-e behaves surprisingly in minibuffer
Date: Sat, 16 Sep 2023 14:02:35 +0200

On Sat, 16 Sep 2023 10:56:27 +0300 Eli Zaretskii <eliz <at> gnu.org> wrote:

>> From: Stephen Berman <stephen.berman <at> gmx.net>
>> Cc: 65980 <at> debbugs.gnu.org
>> Date: Fri, 15 Sep 2023 14:35:50 +0200
>>
>> > Your patch changes one of the subroutines of next-line and
>> > previous-line. Those by now became very complex creatures, and handle
>> > many different cases of vertical cursor motion (with and without
>> > visual-line-mode, with and without line truncation, with and without
>> > R2L text, etc.)  So I hesitate to even consider it for this obscure use
>> > case.  I'd be much happier if the change was in move-beginning-of-line
>> > and move-end-of-line instead, so that it wouldn't have any chance of
>> > affecting other commands.  Could you try to come up with such a change
>> > instead?
>>
>> Sure.  I think the easiest way is simply to take your observation about
>> inhibit-field-text-motion and confine it to the minibuffer:
>
> Thanks, please install your first patch on the emacs-29 branch.

Done in commit 33ff4fed03d and closing the bug.  Thanks.

Steve Berman

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From: Stephen Berman <stephen.berman <at> gmx.net>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.0.50; C-e behaves surprisingly in minibuffer
Date: Thu, 14 Sep 2023 18:51:36 +0200

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0. emacs -Q
Sanity checks:
1. Type a command that prompts in the minibuffer and includes text that
   ends before window-width, resulting e.g. in this in the minibuffer:
   Find file: ~/src/emacs/emacs-master/INSTALL
2. Typing C-a moves point to the beginning of the file name and then
   typing C-e moves point to the end of the file name.
3. Typing M-< moves point to the beginning of the prompt and then typing
   C-e moves point to the end of the file name.
Change the input:
4. Now type a command that includes text that extends beyond
   window-width, resulting e.g. in this in the minibuffer:
   Find file: ~/src/emacs/emacs-master/java/org/gnu/emacs/EmacsLauncherPreferencesActivity.java
5. Typing C-a moves point to the beginning of the file name and then
   typing C-e moves point to the end of the file name (same as step 2).
Here's the surprising behavior:
6. Typing M-< moves point to the beginning of the prompt but now typing
   C-e fails to move point.  And if you move point to any position
   within the prompt, e.g. M-f to put point after "Find", then typing
   C-e moves point to the beginning of the prompt.

It certainly seems like a bug that C-e, i.e. move-end-of-line, fails to
move to the end of the line in step 6, and the inconsistency between the
results in step 3 and step 6 also seems like a bug.  The attached patch
ensures that C-e in step 6 moves to the end of the file name, as in step
2, and should only affect the use of C-e in the minibuffer.


In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
 3.24.38, cairo version 1.17.6) of 2023-09-13 built on strobelfs2
Repository revision: 9838f786ded35fe49bbe84dd78af84df1337adbf
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101008
System Description: Linux From Scratch r12.0-19

Configured using:
 'configure -C 'CFLAGS=-Og -g3' PKG_CONFIG_PATH=/opt/qt5/lib/pkgconfig'

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