bug#60423: 29.0.60; goto-address and shr/textsec don't play nicely together

[Eli Zaretskii <eliz@gnu.org>]

> From: Mike Kupfer <kupfer@rawbw.com>
> Date: Thu, 29 Dec 2022 19:59:05 -0800
> 
> In MH-E, if you mouse over the link or emoji, you get text in the echo
> area that tells you how to follow the link.  There's no explanation
> given for the red text or the caution emoji, which is a bug IMO.
> 
> I tracked this down to MH-E's use of goto-address when displaying a
> message (mh-display-msg > mh-show-addr > goto-address).
> 
> I can think of a couple ways to deal with this, but I'm not sure what
> the right way forward is.  The simplest approach would be for
> mh-display-msg to stop using goto-address.  I'm not happy with that
> approach because it removes functionality that MH-E has had for awhile.  
> 
> A slightly more sophisticated approach would be to not use goto-address
> when using shr to render the message.  That loses some functionality
> (like the auto-linkification of email addresses), and it seems kind of
> kludgey, but I suppose it's not too terrible.
> 
> Another possibility would be to make goto-address smarter, so that it
> doesn't stomp on whatever it was that shr did to get the mouse-over
> text.
> 
> I'm happy to take a stab at a fix, but I could use some guidance on the
> right direction to go in.

I guess the latter, but it will have to be on master, since I'm quite
sure the changes will not be safe enough for the release branch.

Thanks.