From: David Engster <deng@randomsample.de>
To: Tom Tromey <tom@tromey.com>
Cc: 18494@debbugs.gnu.org, Eric Ludlam <eric@siege-engine.com>
Subject: bug#18494: 24.4.50; defclass creates undocumented *-list-p function
Date: Sat, 20 Sep 2014 12:41:25 +0200 [thread overview]
Message-ID: <87bnqavaju.fsf@engster.org> (raw)
In-Reply-To: <87a95xvfuy.fsf@tromey.com> (Tom Tromey's message of "Wed, 17 Sep 2014 20:09:57 -0600")
[add CC Eric]
Tom Tromey writes:
> Try:
>
> (defclass zzz-whatever () ((hi)))
>
> Now notice there is a new function:
>
> (symbol-function 'zzz-whatever-list-p)
> (lambda (obj) "Test OBJ to see if it a list of objects which are a child of type zzz-whatever" (when (listp obj) (let ((ans t)) (while (and obj ans) (setq ans (and (eieio-object-p (car obj)) (object-of-class-p (car obj) zzz-whatever))) (setq obj (cdr obj))) ans)))
>
>
> This new -list-p function is not documented in the EIEIO manual.
>
> It seems to me that it would be a bit better not to define it.
> It doesn't seem generally useful enough, to me.
I agree it's not generally useful. It was added as a helper function to
validate a slot which should hold a list of objects (as part of the
EIEIO/EDE security fix for Emacs 23.4).
At least that's what I remember. I was under the impression that
eieio-persistent-validate/fix-slot-value would use this, but I cannot
see it; maybe it's just hidden very well. If it is not used, I'd agree
that it should better be removed or at least renamed to X--list-p.
Eric, WDYT?
-David
next prev parent reply other threads:[~2014-09-20 10:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-18 2:09 bug#18494: 24.4.50; defclass creates undocumented *-list-p function Tom Tromey
2014-09-20 10:41 ` David Engster [this message]
2014-09-20 19:53 ` Eric Ludlam
2014-09-20 23:08 ` Stefan Monnier
2014-09-20 23:34 ` Eric Ludlam
2014-09-21 16:20 ` Stefan Monnier
2014-09-21 16:37 ` Eric Ludlam
2014-10-17 5:11 ` Stefan Monnier
2022-01-30 21:21 ` Lars Ingebrigtsen
2022-01-31 2:34 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-01-31 15:33 ` Lars Ingebrigtsen
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