Re: Question about customising faces

[Eli Zaretskii]

> Date: Tue, 30 Aug 2022 19:15:59 +0000
> From: Gregory Heytings <gregory@heytings.org>
> cc: help-gnu-emacs@gnu.org
> 
> > Actually, nil is not valid as a color, but people still use it.
> >
> > See the discussion of bug#54156.
> >
> 
> I remember that discussion indeed.  So according to what you said there 
> Joost should use
> 
> (set-face-attribute 'isearch nil :background 'unspecified :foreground 
> "#d33682")
> (set-face-attribute 'isearch t :background 'unspecified :foreground "#d33682")
> 
> What I don't understand is why the second call to set-face-attribute is 
> needed: here at least, the first call also affects future frames.

According to the discussion there, if all the calls use 'unspecified,
only the first one is needed.  But if nil is used, something that
people think they can do, both calls are needed.