GNU bug report logs - #2951
Suggestion: self-evaluating-p function

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From: Ralph Schleicher <rs <at> ralph-schleicher.de>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 2951 <at> debbugs.gnu.org
Subject: bug#2951: Suggestion: self-evaluating-p function
Date: Tue, 14 Apr 2009 18:53:45 +0200

Stefan Monnier <monnier <at> iro.umontreal.ca> writes:

>>>> (list symbol (if (self-evaluating-p value)
>>>> value
>>>> (list 'quote value))))
>>> 
>>> Why not just          (list symbol (list 'quote value)))        ?
>
>> Yes, this was my first attempt, too.  But I got puzzled whether
>> or not the extra quote matters in any way, especiall with lambda
>> expressions.  Since I couldn't find a satisfactory answer in the
>> Elisp reference manual, I decided to get rid of it just to be save.
>
>> So, If you tell me that the quote does no harm no matter what Lisp
>> object is quoted, I can live without a self-evaluating-p function.
>
> By definition (self-evaluating-p VALUE) tests whether evaluating VALUE
> or evaluating (quote VALUE) will return the same thing.
> I.e. the quote does no harm.

Okay, thank you for your patience.

-- 
Ralph

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