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Date: Sat, 25 Dec 2004 06:57:44 -0500
From: Joe Wright <joewwright AT comcast DOT net>
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Subject: Re: CTYPE stuff for Eli or DJ
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Eli Zaretskii wrote:
>>Date: Fri, 24 Dec 2004 20:18:03 -0500
>>From: Joe Wright <joewwright AT comcast DOT net>
>>
>>No need for that, I think. Consider..
>>
>>__dj_ctype_flags[(unsigned)(c) > 255 ? 0 : ((c)+1)]
>>
>>..which will allow 'int is*(int c)' to take any int, including EOF 
>>and do the 'Wright' thing.
> 
> 
> How in the world returning 0 for out-of-range arguments is the Right
> Thing?

It's the right thing because the array itself has 257 elements of 
unsigned short, element 0 being 0. Elements 1..256 have bits set (or 
not) depending on the characteristics of characters 0..255, hence 
the +1 in the macro. Out-of-range should return 0. What you return?
-- 
Joe Wright                            mailto:joewwright AT comcast DOT net
"Everything should be made as simple as possible, but not simpler."
                     --- Albert Einstein ---