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To: egor duda <cygwin-developers AT cygwin DOT com>
Subject: Re: isspace() & i18n
References: <13254193676 DOT 20010530145756 AT logos-m DOT ru>
	<20010530095254 DOT B17603 AT redhat DOT com>
	<9265832872 DOT 20010530181156 AT logos-m DOT ru>
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From: Kazuhiro Fujieda <fujieda AT jaist DOT ac DOT jp>
Date: 31 May 2001 01:29:28 +0900
In-Reply-To: egor duda's message of Wed, 30 May 2001 18:11:56 +0400
Message-ID: <s1s4ru2ls0n.fsf@jaist.ac.jp>
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>>> On Wed, 30 May 2001 18:11:56 +0400
>>> egor duda <deo AT logos-m DOT ru> said:

> i think we should either conform to standard and explicitly convert
> types or define appropriate strings as unsigned char*, (typedef PATH_STR,
> perhaps), or define cygwin_is*() as macros that do the conversion, or,
> as glibc does, expand _ctype to allow indices in range [-128,256].

The last is preferable.

The ISO C standard specifies is* facilities operate properly on
all values representable as type `char' and type `unsigned char'.
It depends on implementation whether char is signed or unsigned. 
The is* facilities should operate on range [-128,256] on the
implementation where char is singied.
____
  | AIST      Kazuhiro Fujieda <fujieda AT jaist DOT ac DOT jp>
  | HOKURIKU  School of Information Science
o_/ 1990      Japan Advanced Institute of Science and Technology