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bug#34852: 26.1; seq-intersection ignores nil as element
From: |
Basil L. Contovounesios |
Subject: |
bug#34852: 26.1; seq-intersection ignores nil as element |
Date: |
Fri, 15 Mar 2019 15:56:19 +0000 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
Michael Heerdegen <michael_heerdegen@web.de> writes:
> "Miguel V. S. Frasson" <mvsfrasson@gmail.com> writes:
>
>> In any case, of another implementation for seq-intersection or not, I
>> think that the solution from Stefan should be implemented anyway
>> because
>>
>> * it makes seq-contains provide a useful return value when ELT=nil, so
>> it is a good exception; If ELT=nil, seq-contains currently returns nil
>> anyway;
>>
>> * it makes seq-contains become a real predicate function, making it
>> more useful;
>>
>> * since seq-contains has been used as predicate before, it is
>> unpredictable which code uses it out of official repositories, so this
>> fix potentially fixes other code.
>
> BTW, another (alternative) alternative would be to make it return
> (list ELT). That would be a bit less backward-compatible, but a
> bit more consistent.
+1, either this or returning a boolean is fine with me.
--
Basil
- bug#34852: 26.1; seq-intersection ignores nil as element, (continued)
- bug#34852: 26.1; seq-intersection ignores nil as element, Stefan Monnier, 2019/03/14
- bug#34852: 26.1; seq-intersection ignores nil as element, Miguel V. S. Frasson, 2019/03/14
- bug#34852: 26.1; seq-intersection ignores nil as element, Stefan Monnier, 2019/03/14
- bug#34852: 26.1; seq-intersection ignores nil as element, Miguel V. S. Frasson, 2019/03/14
- bug#34852: 26.1; seq-intersection ignores nil as element, Michael Heerdegen, 2019/03/14
- bug#34852: 26.1; seq-intersection ignores nil as element, Stefan Monnier, 2019/03/14
- bug#34852: 26.1; seq-intersection ignores nil as element, Michael Heerdegen, 2019/03/15
- bug#34852: 26.1; seq-intersection ignores nil as element, Stefan Monnier, 2019/03/15
- bug#34852: 26.1; seq-intersection ignores nil as element, Miguel V. S. Frasson, 2019/03/14
- bug#34852: 26.1; seq-intersection ignores nil as element, Michael Heerdegen, 2019/03/14
- bug#34852: 26.1; seq-intersection ignores nil as element,
Basil L. Contovounesios <=
- bug#34852: 26.1; seq-intersection ignores nil as element, Miguel V. S. Frasson, 2019/03/15
- bug#34852: 26.1; seq-intersection ignores nil as element, Miguel V. S. Frasson, 2019/03/16
- bug#34852: 26.1; seq-intersection ignores nil as element, Basil L. Contovounesios, 2019/03/16
- bug#34852: 26.1; seq-intersection ignores nil as element, Miguel V. S. Frasson, 2019/03/16
- bug#34852: 26.1; seq-intersection ignores nil as element, Basil L. Contovounesios, 2019/03/15
- bug#34852: 26.1; seq-intersection ignores nil as element, Basil L. Contovounesios, 2019/03/14
- bug#34852: 26.1; seq-intersection ignores nil as element, Michael Heerdegen, 2019/03/14
- bug#34852: 26.1; seq-intersection ignores nil as element, Basil L. Contovounesios, 2019/03/14
- bug#34852: 26.1; seq-intersection ignores nil as element, Basil L. Contovounesios, 2019/03/14
- bug#34852: 26.1; seq-intersection ignores nil as element, Nicolas Petton, 2019/03/14