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From: Jean Louis <bugs@gnu.support>
To: help-gnu-emacs@gnu.org
Subject: Re: Is there any difference between `equal' and `string=' for strings?
Date: Fri, 20 Aug 2021 08:25:16 +0300	[thread overview]
Message-ID: <YR88vCATcNjhEex4@protected.localdomain> (raw)
In-Reply-To: <87v941domi.fsf@zoho.eu>

* Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org> [2021-08-20 02:04]:
> Marcin Borkowski wrote:
> 
> > Well, of course a string and a symbol can never be `equal',
> > but they can be `string='. But what if both arguments
> > are strings?
> 
> ... and if both arguments are symbols?
> 
> (string= 'hi 'hi) ; t
> 
> (Why ever one would use `string=' for that.)
> 
> Yeah, it is a jungle all that ...

How I understand it, it is good also for comparison of symbols as
strings. 

(setq s1 "Jane") ⇒ "Jane"
(setq s2 "Jane") ⇒ "Jane"
(setq s3 "Doe") ⇒ "Doe"

Then this is how I understand the intended purpose:

(string= s1 s2) ⇒ t
(string= s1 s3) ⇒ nil

And of course you are free to compare empty symbols:

(string= 'hi 'hi) ⇒ t

However by looking at the purpose it becomes all logical to me.


-- 
Jean

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  reply	other threads:[~2021-08-20  5:25 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-19  4:56 Is there any difference between `equal' and `string=' for strings? Marcin Borkowski
2021-08-19  6:21 ` Jean Louis
2021-08-19 23:14   ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-20  5:35     ` Jean Louis
2021-08-20  6:32       ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21  9:05         ` Jean Louis
2021-08-21 19:14           ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-19 15:35 ` [External] : " Drew Adams
2021-08-21  3:43   ` this is United States calling (was: Re: [External] : Is there any difference between `equal' and `string=' for strings?) Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21  3:49     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21  4:20       ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21  5:39     ` FW: " Drew Adams
2021-08-21 19:41       ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21  6:50     ` tomas
2021-08-21 19:41       ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-19 23:02 ` Is there any difference between `equal' and `string=' for strings? Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-20  5:25   ` Jean Louis [this message]
2021-08-20  6:24     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-20  6:41       ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-20 23:12         ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-20 23:42           ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21  0:08             ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21  0:30               ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21  9:08         ` Jean Louis
2021-08-21 19:17           ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-21  9:04       ` Jean Louis
2021-08-21 19:09         ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-24 14:55     ` Marcin Borkowski

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