Path: utzoo!utgpu!watserv1!watmath!rbutterworth
From: rbutterworth@watmath.waterloo.edu (Ray Butterworth)
Newsgroups: comp.lang.c
Subject: Re: isascii (was: Another pitfall.  Signed chars and ctype.h)
Message-ID: <34540@watmath.waterloo.edu>
Date: 22 Feb 90 21:59:44 GMT
References: <Cuunry2@cs.psu.edu> <1990Feb12.043324.5259@sq.sq.com> <2448@ditsyda.oz>
Reply-To: rbutterworth@watmath.waterloo.edu (Ray Butterworth)
Organization: U. of Waterloo, Ontario
Lines: 7

In article <2448@ditsyda.oz> evans@ditsyda.oz (Bruce Evans) writes:
>Why doesn't ANSI C guarantee isdigit() (etc.) on *all* characters?

Then the missing isascii() wouldn't even be needed.
This was proposed to the Committee and rejected on the (incorrect)
grounds that it couldn't be implemented without the macro's having
to evaluate its arguments more than once.