From: Robert Thorpe <rt@robertthorpeconsulting.com>
To: Emanuel Berg <embe8573@student.uu.se>
Cc: help-gnu-emacs@gnu.org
Subject: Re: Whats wrong with this defcustom?
Date: Thu, 31 Jul 2014 22:56:56 +0100 [thread overview]
Message-ID: <87oaw5kx93.fsf@robertthorpeconsulting.com> (raw)
In-Reply-To: <87tx5yh35q.fsf@debian.uxu> (message from Emanuel Berg on Thu, 31 Jul 2014 00:50:41 +0200)
Emanuel Berg <embe8573@student.uu.se> writes:
> Robert Thorpe <rt@robertthorpeconsulting.com> writes:
...
> Yeah? Isn't it just plain evaluation inside-out?
>
> (equal '(something) (quote (something))) ; t
> '(equal '(something) (quote (somethingelse))) ; nil
My point is only that the '(something) is converted into (quote
(something)) by the lisp reader. Equality wasn't really the issue
because that conversion happens before the lisp interpreter proper gets
involved. It happens before the interpreters ideas about equality are involved.
What the interpreter or evaluator sees for the code above is:
(equal (quote (something)) (quote (something))) ; t
(equal (quote (something)) (quote (somethingelse))) ; nil
BR,
Robert Thorpe
next prev parent reply other threads:[~2014-07-31 21:56 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.6309.1406759543.1147.help-gnu-emacs@gnu.org>
2014-07-30 22:50 ` Whats wrong with this defcustom? Emanuel Berg
2014-07-31 21:56 ` Robert Thorpe [this message]
[not found] <mailman.6265.1406683969.1147.help-gnu-emacs@gnu.org>
2014-07-30 2:18 ` Emanuel Berg
2014-07-30 2:25 ` Emanuel Berg
2014-07-30 22:32 ` Robert Thorpe
[not found] <mailman.6258.1406678132.1147.help-gnu-emacs@gnu.org>
2014-07-30 0:34 ` Emanuel Berg
2014-07-30 1:32 ` Robert Thorpe
[not found] <mailman.6065.1406372149.1147.help-gnu-emacs@gnu.org>
2014-07-26 12:58 ` Olve
2014-07-26 13:32 ` Thorsten Jolitz
2014-07-26 10:55 Thorsten Jolitz
2014-07-28 8:58 ` Tassilo Horn
2014-07-28 10:06 ` Thorsten Jolitz
2014-07-28 22:33 ` Stefan Monnier
2014-07-28 23:09 ` Thorsten Jolitz
2014-07-29 0:46 ` Robert Thorpe
2014-07-29 2:06 ` Thien-Thi Nguyen
2014-07-29 23:55 ` Robert Thorpe
2014-07-29 8:19 ` Thorsten Jolitz
2014-07-28 13:17 ` Sebastian Wiesner
2014-07-28 13:54 ` Thorsten Jolitz
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