Re: Foreground color opacity

[Filippo Argiolas]

On Mon, Sep 11, 2023 at 6:57 PM Eli Zaretskii <eliz@gnu.org> wrote:
>
> > From: Filippo Argiolas <filippo.argiolas@gmail.com>
> > Date: Mon, 11 Sep 2023 18:25:50 +0200
> > Cc: emacs-devel@gnu.org
> >
> > Didn't encounter any issue so far with c and c-ts modes but something
> > like you described could definitely happen if someone relies on font
> > face to detect symbol type. I'd say that's kind of an unsafe aspect to
> > rely on. Do you have any example in mind of code doing that so I could
> > run some tests?
>
> One such example is flyspell.el's flyspell-prog-mode.  See
> flyspell-prog-text-faces there.

Thanks! That should be easily solvable by adding
`font-lock-string-face-clangd-inactive' and the other relevant
inactive face variants to `flyspell-prog-text-faces'.
FWIW with eglot+clangd (and I guess other servers too) inactive code
regions already behave differently because they are not compiled, so
you won't get e.g. any flymake diagnostics or inlay hints, so it could
be a little less of an issue if something else like flyspell in this
case breaks.

Filippo