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Re: Human-readable file sorting
From: |
Lars Ingebrigtsen |
Subject: |
Re: Human-readable file sorting |
Date: |
Sat, 20 Feb 2016 22:45:31 +1100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) |
Eli Zaretskii <address@hidden> writes:
>> > Please don't call that function `file-string-lessp', or anything that
>> > has "file" in it. This sorting order has nothing to do with files.
>>
>> Well, this is the function that's supposed to sort file names in the
>> order requested by the user
>
> I think it's supposed to sort strings while treating numeric parts of
> them specially. Its usage domain is wider than just file names.
No no. This is the function that all Emacs things that want to sort
file names should use.
The definition of that function will be just
(if some-user-setting
(string-lessp ...)
(logical-string-lessp ...))
>> Hm, interesting...
>>
>> (sort '("11" "12" "1 1" "1 2" "1.1" "1.2") 'string-collate-lessp)
>> => ("11" "1 1" "1.1" "12" "1 2" "1.2")
>
> You will see that 'ls' in a UTF-8 locale does the same.
Huh, I never noticed:
address@hidden:/tmp/zot$ echo $LANG
en_US.UTF-8
address@hidden:/tmp/zot$ ls 1*
10 11 1.1 12
But:
address@hidden:/tmp/zot$ ls foo*
foo12.txt foo1.txt foo2.txt
Sorting is hard!
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
- Re: dired and ls, (continued)
- Re: dired and ls (was: Human-readable file sorting), Eli Zaretskii, 2016/02/20
- Re: dired and ls, John Wiegley, 2016/02/20
- Re: dired and ls, Eli Zaretskii, 2016/02/20
- Re: dired and ls, John Wiegley, 2016/02/20
- Re: dired and ls, Lars Ingebrigtsen, 2016/02/20
- Re: Human-readable file sorting, Eli Zaretskii, 2016/02/20
- Re: Human-readable file sorting, Lars Ingebrigtsen, 2016/02/20
- Re: Human-readable file sorting, Eli Zaretskii, 2016/02/20
- Re: Human-readable file sorting,
Lars Ingebrigtsen <=
- Re: Human-readable file sorting, Eli Zaretskii, 2016/02/20
- Re: Human-readable file sorting, Lars Ingebrigtsen, 2016/02/20
- Re: Human-readable file sorting, Richard Stallman, 2016/02/21
- Re: Human-readable file sorting, Lars Ingebrigtsen, 2016/02/21
- Re: Human-readable file sorting, Richard Stallman, 2016/02/22
- Re: Human-readable file sorting, Pierpaolo Bernardi, 2016/02/22
- Re: Human-readable file sorting, Eli Zaretskii, 2016/02/22
- Re: Human-readable file sorting, Richard Stallman, 2016/02/23
- Re: Human-readable file sorting, Eli Zaretskii, 2016/02/23
- Re: Human-readable file sorting, Lars Ingebrigtsen, 2016/02/23