GNU bug report logs - #75355
[PATCH 0/1] Improve comment cycling in log-edit

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From: Jonas Bernoulli <jonas <at> bernoul.li>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 75355 <at> debbugs.gnu.org
Subject: bug#75355: [PATCH 1/1] Improve comment cycling in log-edit
Date: Sun, 05 Jan 2025 12:37:38 +0100

Eli Zaretskii <eliz <at> gnu.org> writes:

>> From: Jonas Bernoulli <jonas <at> bernoul.li>
>> Cc: 75355 <at> debbugs.gnu.org
>> Date: Sat, 04 Jan 2025 23:29:34 +0100
>> 
>> Eli Zaretskii <eliz <at> gnu.org> writes:
>> 
>> >> Date: Sat,  4 Jan 2025 18:11:08 +0100
>> >> From:  Jonas Bernoulli via "Bug reports for GNU Emacs,
>> >>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
>> >> 
>> >> Save the current message before cycling to older messages, making it
>> >> possible to cycle back to that initial message.
>> >
>> > Thanks, but can you provide some rationale for this?  Is the
>> > assumption that users need to make several commits that all share the
>> > same comment or something?
>> 
>> That is one use-case for the feature as it exists now, yes.  Messages
>> are already automatically saved once the user either finished or aborts
>> the commit.
>> 
>> These changes don't really affect that.  I consider this additional
>> automatic saving a bugfix.  Without it, a user may start typing a new
>> message, decide to use a recent message instead, navigate to it but then
>> change their mind about that, and then they would not be able to go back
>> to the new message they had already started typing, because it was
>> discarded when they moved a way from it.  By saving the new message when
>> we move away from it, we make it possible to navigate back to it.
>
> What do you mean by "move away" and "navigate", in the context of
> log-edit?

The buffer contains a draft to be used as the message for the commit
you are about to create.  "Moving away" from the message means using
the commands log-edit-previous/next-comment to "navigate" to another
message.  Doing so erased the contents of the buffer, and another
recently used message is inserted in its place.

>> By additionally defining log-edit-save-comment as a command we gain the
>> ability to save the message at random point.  This could, for example,
>> be useful if we have to use very similar messages in different commits,
>> potentially across multiple repositories.
>
> Is this a frequent use case?  Why would the same log message be used
> for different commits?

Using the same or very similar commit messages across different
repositories is a very frequent occurrence for me.  The last such
message was "Bump copyright years", but through out the year I also use
messages such as "Fix spelling errors", after running a spell-checker on
all my packages.

Granted, those two examples didn't need a "template".  I also frequently
fix some class of error across many third-party packages, as part of my
work on Melpa and the Emacsmirror.  In such cases I often write a long,
message explaining why something should be done a certain way.  The
message is almost the same for every repository/package but I try to use
the names of the files in each particular repository, to make things more
engaging and actionable for each individual package maintainer.

Note that the command log-edit-save-comment is also used in code twice,
so the cost of making it a command is just the line " (interactive)".
If you feel this command is not useful enough to receive a default key
bindings, we can drop that, but the interactive form should remain.

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