GNU bug report logs - #45428
27.1; (quote (quote (quote ...))) unexpectedly works as anonymous face

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Message #62 received at 45428 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Markus Triska <triska <at> metalevel.at>
Cc: larsi <at> gnus.org, stefan <at> marxist.se, 45428 <at> debbugs.gnu.org,
 drew.adams <at> oracle.com
Subject: Re: bug#45428: 27.1;
 (quote (quote (quote ...))) unexpectedly works as anonymous face
Date: Tue, 29 Dec 2020 19:17:49 +0200

> From: Markus Triska <triska <at> metalevel.at>
> Cc: Drew Adams <drew.adams <at> oracle.com>,  larsi <at> gnus.org,  stefan <at> marxist.se,  45428 <at> debbugs.gnu.org
> Date: Tue, 29 Dec 2020 17:40:38 +0100
> 
> In the original bug report, the property value has the form:
> 
>     (quote (quote (quote ...)))
> 
> I recognize that it is a list. However, I do not recognize that each of
> its elements is given "by any of the above forms", i.e., by any of:
> 
> >   . a face symbol
> >   . a property list of attribute/value pairs
> >   . a cons cell of the form (foreground-color . COLOR)
> >   . a cons cell of the form (background-color . COLOR)
> 
> Could you please clarify which of these forms match (quote (quote ...)) ?

It's a list, obviously.  And the face specification as a list can be
recursive, because it can be a list of any mix of any of the allowed
forms, including a list.

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