Bug#799856: libc6: strftime doesn't honor the charmap
On 2015-10-01 22:37:43 +0200, Vincent Danjean wrote:
> Le 23/09/2015 12:17, Vincent Lefevre a écrit :
> > Package: libc6
> > Version: 2.19-22
> > Severity: normal
> >
> > strftime doesn't honor the charmap. The following shows that strftime
> > yields ISO-8859-1 characters while the charmap is UTF-8.
> >
> > $ locale
> > LANG=POSIX
> > LANGUAGE=
> > LC_CTYPE=en_US.UTF-8
> > LC_NUMERIC="POSIX"
> > LC_TIME=fr_FR
>
> ^^^^^^^^^^^^^
> LC_TIME is set to fr_FR, that is latin1.
> If LC_TIME is set to fr_FR.utf8, I cannot observe the problem anymore.
>
> $ LC_TIME=fr_FR date -d 2015-02-07 +%b | hexdump -C
> 00000000 66 e9 76 72 2e 0a |f.vr..|
> 00000006
> $ LC_TIME=fr_FR.utf8 date -d 2015-02-07 +%b | hexdump -C
> 00000000 66 c3 a9 76 72 2e 0a |f..vr..|
> 00000007
>
> If you agree with me, I let you close the bug.
I disagree. The charmap is specified by LC_CTYPE, not by LC_TIME.
See the locale(7) man page:
LC_CTYPE
This category determines the interpretation of byte sequences
as characters (e.g., single versus multibyte characters), [...]
LC_TIME
This category governs the formatting used for date and time
values. For example, most of Europe uses a 24-hour clock
versus the 12-hour clock used in the United States. [...]
So, the charmap part of the locale value of LC_TIME should be ignored,
just like it is for LC_MESSAGES (with LC_MESSAGES=fr_FR in a UTF-8
environment, messages are output in UTF-8, even though fr_FR is
latin1).
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
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