bug#46507: 26.1; bold attribute copied into enriched-mode text is not saved

[Dan Hitt <dan.hitt@gmail.com>]

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On Sun, Mar 7, 2021 at 11:29 AM Eli Zaretskii <eliz@gnu.org> wrote:

> > From: Tomas Nordin <tomasn@posteo.net>
> > Date: Sun, 07 Mar 2021 20:23:05 +0100
> > Cc: 46507@debbugs.gnu.org
> >
> > --> '(font-lock-face eshell-ls-directory)'
> >
> > and what is defined by variable 'enriched-translations'.
> >
> > Try the same (your recipe) but using M-x shell, and see if it works as
> > expected. It did here, I mean the boldness and the color stuck with the
> > enriched file. So maybe it is not a bug but just a limitation of the
> > enriched-mode, not understanding all possible kinds of text-properties.
>
> We control which text properties enriched-mode knows about.  If
> there's some property it needs to support, but doesn't currently, we
> can teach it to support that property as well.
>

Thanks Eli and Thomas.

Thomas: when i repeat the exercise with the shell, everything is lost: both
bolding and color.

The variable enriched-translations is
((face (bold-italic "bold" "italic") (bold "bold") (italic "italic")
(underline "underline") (fixed "fixed") (excerpt "excerpt") (default) (nil
enriched-encode-other-face)) (left-margin (4 "indent")) (right-margin (4
"indentright")) (justification (none "nofill") (right "flushright") (left
"flushleft") (full "flushboth") (center "center")) (PARAMETER (t "param"))
(FUNCTION (enriched-decode-foreground "x-color")
(enriched-decode-background "x-bg-color") (enriched-decode-display-prop
"x-display")) (read-only (t "x-read-only")) (display (nil
enriched-handle-display-prop)) (unknown (nil format-annotate-value)))

This comes from starting emacs with -Q, and evaluating the variable
enriched-translations in the scratch buffer.

I went through the exercise with  eshell, to make sure that nothing
changed, and it doesn't seem to have: colors get saved, but not boldness.

Eli: Maybe it is wrong for me to say "needs" :) :).  It would be very
convenient though, and i could tweak some variables in my start up (for
testing with 'emacs -Q' though i would have to finagle it somehow i guess?).

dan

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