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Date:	Fri, 8 Jan 2010 16:43:51 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"Masami Hiramatsu" <mhiramat@...hat.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>, "Michal Marek" <mmarek@...e.cz>,
	"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

> 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?
>
> Isn't it affect [A-Z] or [a-z]? If not, the patch good to me too.
>

[A-Z][a-z] is what LC_COLLATE is about.

    -hpa

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