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From: Jun T <takimoto-j@kba.biglobe.ne.jp>
To: zsh-workers@zsh.org
Subject: Re: Y01 Test Failure
Date: Fri, 19 Mar 2021 19:42:38 +0900	[thread overview]
Message-ID: <9F54A3AC-47E4-4238-8C5C-F97F3DD8D7B9@kba.biglobe.ne.jp> (raw)
In-Reply-To: <CAHYJk3SB+-hqexEfnTgvJKLU22n1gF_pEmrg=6X2zSDGswYzBQ@mail.gmail.com>


> 2021/03/19 17:27, Mikael Magnusson <mikachu@gmail.com> wrote:
> 
> Is this happening even with LC_COLLATE=C, or did we not bother setting
> that for this specific test?

LC_ALL is set to en_US.UTF-8 at the start of Y01completion.ztst.

I've been thinking that comparison of all-ASCII strings is the same
in C and UTF-8 locales. But it turned out that strcoll() behaves quite
*strangely* under en_US.UTf-8 on Linux.

If I run the following C-code:

#include <stdio.h>
#include <string.h>
#include <locale.h>

int main() {
    char* s[] = { "h", "i", "j" };
    setlocale(LC_COLLATE, "");
    for(int i=0; i<3; ++i) {
        printf("'%s'  - '<INSERT>' = %d\n", s[i], strcoll(s[i], "<INSERT>"));
    }
    return 0;
}

% export LC_COLLATE=C          
% ./a.out
'h'  - '<INSERT>' = 44
'i'  - '<INSERT>' = 45
'j'  - '<INSERT>' = 46
% export LC_COLLATE=en_US.UTF-8
% ./a.out
'h'  - '<INSERT>' = -11
'i'  - '<INSERT>' = -1
'j'  - '<INSERT>' = 1
% export LC_COLLATE=ja_JP.UTF-8
% ./a.out
'h'  - '<INSERT>' = 44
'i'  - '<INSERT>' = 45
'j'  - '<INSERT>' = 46

I can't understand the behavior under en_US.UTF-8 locale.


  reply	other threads:[~2021-03-19 10:43 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-18 15:20 Vin Shelton
2021-03-18 15:48 ` Bart Schaefer
2021-03-18 15:54 ` Bart Schaefer
2021-03-19  6:00   ` Jun T
2021-03-19  8:27     ` Mikael Magnusson
2021-03-19 10:42       ` Jun T [this message]
2021-03-22  2:09         ` dana
2021-03-22 11:06           ` Vin Shelton
2021-03-28  5:25             ` dana
2021-11-12 19:23 Y02 test failure Marlon Richert
2021-11-12 19:56 ` Bart Schaefer
2021-11-12 21:28   ` Marlon Richert
2021-11-12 21:49     ` Bart Schaefer
2021-11-12 22:00       ` Lawrence Velázquez
2021-11-13 17:15         ` Marlon Richert
2021-11-29 21:43           ` Y01 " Marlon Richert
2021-11-30 14:57             ` Jun. T
2021-12-01  3:39               ` Bart Schaefer

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