bug#73284: [PATCH] Add option to push mark after delete-pair

[Eli Zaretskii <eliz@gnu.org>]

> From: Paul Nelson <ultrono@gmail.com>
> Date: Sun, 15 Sep 2024 22:58:09 +0200
> 
> The delete-pair command from lisp.el deletes a matched pair of
> delimiters.  After using this command, I often want to operate on the
> region enclosed by the deleted delimiters.  As far as I know, there's
> currently no quick way to access the end of that region.
> 
> This patch introduces a custom option, delete-pair-push-mark.  When
> enabled, it causes delete-pair to push a mark at the end of the
> enclosed region.
> 
> This opens up various workflows.  For instance, after deleting a pair,
> we can use C-x C-x to highlight the region and act on it further.

Shouldn't this activate the region, instead of forcing users to do
that manually?  Users that have transient-mark-mode enabled (which is
ON by default), will expect that, I think.

> To err on the side of caution, I hid the new behavior behind a user
> option, disabled by default.  I could just as well see it being turned
> on by default (or getting rid of the user option, making the new
> behavior "mandatory"), and am open to suggestions/feedback.

I don't think doing this by default is a good idea.  Such significant
changes in behavior are better off starting disabled.

Let's see what others think about such optional behavior.

Thanks.