bug#54551: show-paren-mode inconsistency

[goncholden via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

------- Original Message -------

On Friday, March 25th, 2022 at 12:12 PM, Phil Sainty <psainty@orcon.net.nz> wrote:

> On 2022-03-25 11:48, goncholden wrote:

> > Consider the following command
> >   (setq initial-frame-alist '((width . 72) (height . 26)) ).
> > Would be instructive that when one puts the cursor in the space
> > between (width . 72) and (height . 26), the entire (width . 72)
> > (height . 26) would be highlighted.

> That wouldn't make any sense for show-paren-mode.

> The cursor (point) is either between the ")" and " " characters, or
> else between the " " and "(" characters. Those are the only two
> possibilities, and in each case you would expect show-paren-mode to
> highlight the adjacent expression (to the left or to the right of the
> cursor, respectively).

I use the block colouring of the cursor, meaning that your valid description
in not so intuitive.  Would it be possible to include a different interpretation
depending on the type of cursor display one is using?

> > But (setq show-paren-when-point-inside-paren t) does not do that.

> It's not documented as doing that, so there's not reason to expect
> that it might.
>
> I think you're looking for this library:
>   https://www.emacswiki.org/emacs/HighlightSexp

Will try it out and report back about it.