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bug#34852: 26.1; seq-intersection ignores nil as element
From: |
Michael Heerdegen |
Subject: |
bug#34852: 26.1; seq-intersection ignores nil as element |
Date: |
Fri, 15 Mar 2019 00:15:20 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
"Miguel V. S. Frasson" <mvsfrasson@gmail.com> writes:
> Hi
>
> 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.
Michael.
- bug#34852: 26.1; seq-intersection ignores nil as element, (continued)
- 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, 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 <=
- 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, 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