bug#72485: Support 'visual-wrap-prefix-mode' in SHR/EWW

[Eli Zaretskii <eliz@gnu.org>]

> Date: Sun, 18 Aug 2024 11:28:40 -0700
> Cc: 72485@debbugs.gnu.org
> From: Jim Porter <jporterbugs@gmail.com>
> 
> On 8/18/2024 11:12 AM, Eli Zaretskii wrote:
> >   *** EWW now enables 'visual-wrap-prefix-mode' when 'shr-fill-text' is nil.
> >   By default, 'shr-fill-text' is t, and EWW fills the text according to
> >   the width of the window.  If you customize 'shr-fill-text' to nil,
> >   EWW will now automatically turn on 'visual-wrap-prefix-mode' in
> >   addition to 'visual-line-mode', so that long lines are wrapped at
> >   word boundaries near window edge and the continuation lines are
> >   indented using prefixes computed from surrounding context.
> 
> That seems good to me, so I'll just use that as-is for Emacs 31. How 
> about this for the release branch?
> 
> 
> *** New option 'shr-fill-text'.
> When 'shr-fill-text' is non-nil (the default), SHR will fill the text
> according to the width of the window.  If you customize it to nil, SHR
> will leave the text as-is; in that case, EWW will automatically enable
> 'visual-line-mode' when displaying a page so that long lines are
> visually wrapped at word boundaries.

LGTM, thanks.

> (If you think this makes the Emacs 31 NEWS entry partially redundant, I 
> can try to trim that one down to only discuss the new additions, but I 
> don't mind either way.)

I see no reason to trim it.