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Re: Are two symbols `equal' iff they are `eq'?

From: Marcin Borkowski
Subject: Re: Are two symbols `equal' iff they are `eq'?
Date: Sun, 09 Aug 2015 16:42:25 +0200

On 2015-08-09, at 16:03, Michael Heerdegen <address@hidden> wrote:

> Marcin Borkowski <address@hidden> writes:
>> I cannot make two symbols which would be `equal' but not `eq'.
> Unlike what your subject says, you seem to want to know
>   Are two symbols `eq' iff they are `equal'?
> Which is the more interesting question.

No, it's the same question.

>> (defun eq (a b) (message "Haha!))
>> (equal 'a 'a)
> This is not a good test when the call to `eq' is done from C.  So, a
> negative result doesn't mean anything.

That's what I suspected.

> Michael.


Marcin Borkowski
Faculty of Mathematics and Computer Science
Adam Mickiewicz University

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