Re: Faces for strong, emph and friends in Info?

[Robert Pluim <rpluim@gmail.com>]

>>>>> On Mon, 08 Apr 2024 21:27:43 +0300, Eli Zaretskii <eliz@gnu.org> said:

    >> From: Robert Pluim <rpluim@gmail.com>
    >> Cc: "T.V Raman" <raman@google.com>,  emacs-devel@gnu.org
    >> Date: Mon, 08 Apr 2024 18:57:10 +0200
    >> 
    Eli> I think it's just that no one has written the code to show *foo* and
    Eli> _foo_ as italics and bold (and hide the _ and * characters).  Of
    Eli> course, this will cause some lines be shorter or longer than they are
    Eli> supposed to be, but maybe this is a worthwhile price to pay.
    >> 
    Eli> Patches welcome.
    >> 
    >> How robust do you want this to be?

    Eli> As robust as possible, of course.

    >> +(defface Info-strong
    >> +  '((t :inherit bold))
    >> +  "Face used for *strong* elements."
    >> +  :version "30.1")

    Eli> We need fallback for terminals that don't support bold.  Some
    Eli> stand-out color, perhaps?

I guess. Let me see if I can plagiarize^W seek inspiration from eg
Gnus, that has all sorts of angry fruit salad stuff

    Eli> Also, the doc string should mention Info mode.

    >> +      (while (re-search-forward "\\([*_]\\)\\([^*_\n]+\\)\\([*_]\\)" nil t)

    Eli> This is too fragile, I think.  It matches stuff like "*Note foo_",
    Eli> which can happen in cross-references, for example.  Also, what if
    Eli> @emph or @strong spans a newline?

Yes, would need fixing. I donʼt think emacs regexp search supports
backreferences, so it will be less elegant.

Regarding newlines, do you have an example? It could be added, but Iʼm
not sure if we want to pay the price of excessive searching (although
this code is run only once per node).

Robert
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