GNU bug report logs - #13568
24.3.50; wishlist: add a `group-p' predicate

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Message #11 received at 13568 <at> debbugs.gnu.org (full text, mbox):

From: Drew Adams <drew.adams <at> oracle.com>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 13568 <at> debbugs.gnu.org
Subject: RE: bug#13568: 24.3.50; wishlist: add a `group-p' predicate
Date: Fri, 29 Apr 2016 08:44:22 -0700 (PDT)

> > Subject line says it all: Please add a predicate `group-p' that
> > returns non-nil if its symbol arg is a loaded customize group
> > (i.e. defined by a defgroup that has been evaluated).
> 
> What the use case for such a function?

Uh, to test whether a given symbol corresponds to "a loaded
customize group (i.e. defined by a defgroup that has been
evaluated)."

Clearly (see the rest of the bug report), it is not clear
how Lisp code can test for this.  Property `custom-group'
is not the answer.  Nor, apparently, is a combination of
properties `custom-group' and `custom-autoload'.  How to
test for this condition?

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