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Re: 7 logical-xor implementations in source tree

From: Basil L. Contovounesios
Subject: Re: 7 logical-xor implementations in source tree
Date: Tue, 23 Jul 2019 10:08:22 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Andy Moreton <address@hidden> writes:

> On Mon 22 Jul 2019, Oleh Krehel wrote:
>> I found myself in need of a logical-xor function. There's `xor' defined in
>> array.el. But I don't want my package to depend on array.el. So I grepped the
>> git source of some other definition of `xor'. And I found 7 results: 7
>> functions
>> doing the same thing, none of them in a satisfactory place.
> Is `logxor' what you are looking for ?

No, logxor is a bitwise operation on integers, whereas the proposed xor
operates on booleans, returning non-nil only if one of its arguments is
nil and the other is non-nil.


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