Patch to use more safe-ctype macros

[Zack Weinberg]

On Sun, Oct 21, 2001 at 07:35:55PM -0400, Kaveh R. Ghazi wrote:
> 
> Do you think it helps to have the decimal digits first?  I'm working
> under the theory that given an even distribution of parsed hex digits,
> since the [0-9] range is the largest they'll hit more often and exit
> the function more quickly.

I've never seen hex_digit_value be out of the noise on a profile run,
so I'm not particularly concerned about bumming cycles out of it.
There's plenty of performance work to be done with higher return on
effort.

(must finish fast comment skipper one of these days...)

zw