GNU bug report logs - #44581
28.0.50; undo comment-region error

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Mattias Engdegård <mattiase <at> acm.org>
Subject: bug#44581: closed (Re: bug#44581: 28.0.50; undo comment-region error)
Date: Sun, 15 Nov 2020 13:33:01 +0000

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Your bug report

#44581: 28.0.50; undo comment-region error

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 44581 <at> debbugs.gnu.org.

-- 
44581: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=44581
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Alan Mackenzie <acm <at> muc.de>
To: Mattias Engdegård <mattiase <at> acm.org>
Cc: 44581-done <at> debbugs.gnu.org
Subject: Re: bug#44581: 28.0.50; undo comment-region error
Date: Sun, 15 Nov 2020 13:31:59 +0000

Hello again, Mattias.

On Sun, Nov 15, 2020 at 13:30:28 +0100, Mattias Engdegård wrote:
> 15 nov. 2020 kl. 13.20 skrev Alan Mackenzie <acm <at> muc.de>:

> > Maybe I need the same change in uncomment-region-default too, but
> > I'm not sure.

> It seems more difficult to provoke uncomment-region to change text
> outside the region. Until we have a concrete example, better leave
> that code unchanged.

Yes, I agree.

> > Here is a provisional patch, based on the master branch (although the
> > fix should probably go into emacs-27).  Could you test it, please.

> Seems to work nicely. Thank you!

Thanks!  I've committed it to the emacs-27 branch, and I'm closing the
bug with this post.

-- 
Alan Mackenzie (Nuremberg, Germany).

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From: Mattias Engdegård <mattiase <at> acm.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 28.0.50; undo comment-region error
Date: Wed, 11 Nov 2020 17:19:21 +0100

In *scratch*, write

abc def

Mark 'abc', run 'comment-region', then 'undo'.
This results in the error 

primitive-undo: Changes to be undone by function different from announced

with a backtrace if debug-on-error is set.

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