linux-kernel - Re: [PATCH] Makefile: do not override LC

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Message-ID: <4B4AF4F9.4050102@suse.cz>
Date:	Mon, 11 Jan 2010 10:52:57 +0100
From:	Michal Marek <mmarek@...e.cz>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Masami Hiramatsu <mhiramat@...hat.com>,
	Simon Horman <horms@...ge.net.au>,
	Roland Dreier <rdreier@...co.com>,
	Sam Ravnborg <sam@...nborg.org>,
	Sergei Trofimovich <slyfox@...ox.ru>,
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-sh@...r.kernel.org
Subject: Re: [PATCH] Makefile: do not override LC_CTYPE

On 9.1.2010 01:16, H. Peter Anvin wrote:
> On 01/08/2010 04:09 PM, Masami Hiramatsu wrote:
>> Hi Michal,
>>
>> Michal Marek wrote:
>>> Setting LC_CTYPE=C breaks localized messages in some setups. With only
>>> LC_COLLATE=C and LC_NUMERIC=C, we get almost all we need, except for not
>>> so defined character classes and tolower()/toupper(). The former is not
>>> a big issue, because we can assume that e.g. [:alpha:] will always
>>> include a-zA-Z and we only ever process ASCII input. The latter seems
>>> only affect arch/sh/tools/gen-mach-types, which we can handle separately.
>>
>> Hmm, this also affects arch/x/tools/gen-insn-attr-x86.awk.
>> Could you also wrap it?
>>
> 
> This is tolower/toupper()?  Do there exist locales where tolower/toupper
> on ASCII input do weird things, or are we merely hypothesizing?

In Turkish, uppercase i is İ (I with dot) and lowercase I is ı (i
without dot), see http://en.wikipedia.org/wiki/Dotted_and_dotless_I.

Michal
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