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bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring
From: |
Michael Heerdegen |
Subject: |
bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring |
Date: |
Wed, 06 Jul 2016 17:08:25 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.95 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes:
> As with any such notes in doc strings, we warn about popular mistakes
> that people make frequently. Trying to compare file names using this
> function is such a mistake. Any string that is actually a kind of
> handle to a system object, for which the system itself uses binary
> comparison, will do as an example of such a mistake, but doing that
> with file names is a common enough example to warrant mentioning.
I also have trouble to understand. How can I compare file names modulo
collate-equality, if not with this function?
> > And then, how one is supposed to use an
> > equality predicate for sorting? (We have string-collate-lessp for that)
>
> A sorting algorithm can have its own ideas what to do when
> string-collate-lessp returns zero.
But we are speaking about the docstring of `string-collate-equal-p'. It
is not clear here how it (as an equivalence predicate) could be useful
for sorting at all.
Michael.
- bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring, Óscar Fuentes, 2016/07/05
- bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring, Eli Zaretskii, 2016/07/06
- bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring,
Michael Heerdegen <=
- bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring, Eli Zaretskii, 2016/07/06
- bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring, Óscar Fuentes, 2016/07/06
- bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring, Eli Zaretskii, 2016/07/06
- bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring, Óscar Fuentes, 2016/07/06
- bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring, Eli Zaretskii, 2016/07/06
- bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring, Glenn Morris, 2016/07/09
- bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring, Eli Zaretskii, 2016/07/09
- bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring, Óscar Fuentes, 2016/07/09
- bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring, Eli Zaretskii, 2016/07/09
- bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring, Michael Heerdegen, 2016/07/09