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Re: [ping] [PATCH] Different outputs affected by locale
- From: Eli Zaretskii <eliz at gnu dot org>
- To: Yao Qi <yao at codesourcery dot com>
- Cc: palves at redhat dot com, tromey at redhat dot com, brobecker at adacore dot com, gdb-patches at sourceware dot org
- Date: Wed, 11 Jun 2014 19:22:58 +0300
- Subject: Re: [ping] [PATCH] Different outputs affected by locale
- Authentication-results: sourceware.org; auth=none
- References: <1401192650-29688-1-git-send-email-yao at codesourcery dot com> <538EAEE5 dot 2080708 at codesourcery dot com> <20140604124708 dot GR4289 at adacore dot com> <538F1CC3 dot 9090605 at codesourcery dot com> <87oay8a0t6 dot fsf at fleche dot redhat dot com> <538F803A dot 9020007 at redhat dot com> <538FE412 dot 1050806 at codesourcery dot com> <53903119 dot 6000204 at redhat dot com> <53903EE5 dot 8090107 at codesourcery dot com> <539042A2 dot 4050409 at redhat dot com> <539571C6 dot 40605 at codesourcery dot com> <53958862 dot 5020106 at redhat dot com> <5397BCEC dot 8080300 at codesourcery dot com>
- Reply-to: Eli Zaretskii <eliz at gnu dot org>
> Date: Wed, 11 Jun 2014 10:20:28 +0800
> From: Yao Qi <yao@codesourcery.com>
> CC: Tom Tromey <tromey@redhat.com>, Joel Brobecker <brobecker@adacore.com>, <gdb-patches@sourceware.org>
>
> We import setlocale so that we can set locale through env var, assuming
> that different locales affect the return value of iswprint (0xa2).
> However, this assumption isn't true on Windows :(
>
> I write the following program to check the return value of iswprint
> under different locales.
>
> On Linux, the output is reasonable
> $ ./iswprint
> 4
> C: 0
> en_US.UTF-8: 1
> C: 0
>
> On Windows, iswprint always return true!
> C:\>iswprint.win.exe
> 2
> C: 16
> English_United States.1252: 16
> C: 16
>
> iswprint return value depends on LC_CTYPE, but under LC_CTYPE=C,
> iswprint (0xa2) behaves differently on Windows and Linux.
Why do you need 0xa2 to be unprintable?