From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: Are two symbols `equal' iff they are `eq'?
Date: Sun, 09 Aug 2015 11:59:45 -0400 [thread overview]
Message-ID: <jwvsi7s1mqd.fsf-monnier+gnu.emacs.help@gnu.org> (raw)
In-Reply-To: mailman.8032.1439135226.904.help-gnu-emacs@gnu.org
> Do I get it right that for two symbols to be `eq' it is enough for them
> to have the same name and to be interned in the same obarray?
If they're interned, then that's pretty much true, but symbols aren't
all interned.
Stefan
PS: And then of course, there are major ugly hacks like:
(let* ((ob (make-vector 10 nil))
(s1 (intern "a" ob))
(s2 (intern "b" ob)))
(setf (aref (symbol-name s1) 0) ?b)
(and (equal (symbol-name s1) (symbol-name s2))
(not (equal s1 s2))))
next prev parent reply other threads:[~2015-08-09 15:59 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-09 0:20 Are two symbols `equal' iff they are `eq'? Marcin Borkowski
2015-08-09 1:52 ` Emanuel Berg
2015-08-09 7:44 ` Marcin Borkowski
2015-08-09 15:28 ` Drew Adams
2015-08-09 15:46 ` Marcin Borkowski
2015-08-09 16:38 ` Drew Adams
[not found] ` <mailman.8032.1439135226.904.help-gnu-emacs@gnu.org>
2015-08-09 15:59 ` Stefan Monnier [this message]
[not found] <mailman.7993.1439079676.904.help-gnu-emacs@gnu.org>
2015-08-09 0:31 ` Joost Kremers
2015-08-09 5:16 ` Ian Zimmerman
2015-08-09 7:30 ` Marcin Borkowski
2015-08-09 14:05 ` Michael Heerdegen
2015-08-09 15:10 ` Marcin Borkowski
2015-08-09 15:19 ` Eli Zaretskii
2015-08-09 15:45 ` Marcin Borkowski
2015-08-09 18:19 ` Eli Zaretskii
2015-08-09 19:41 ` Marcin Borkowski
2015-08-10 15:26 ` Nicolas Richard
[not found] ` <mailman.8007.1439097407.904.help-gnu-emacs@gnu.org>
2015-08-09 5:21 ` Rusi
2015-08-09 5:33 ` Ian Zimmerman
2015-08-09 7:42 ` Marcin Borkowski
2015-08-09 14:03 ` Michael Heerdegen
2015-08-09 14:42 ` Marcin Borkowski
2015-08-09 14:47 ` Michael Heerdegen
[not found] ` <mailman.8011.1439106166.904.help-gnu-emacs@gnu.org>
2015-08-09 15:38 ` Joost Kremers
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