Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!ncar!ico!ism780c!haddock!karl
From: karl@haddock.ima.isc.com (Karl Heuer)
Newsgroups: comp.lang.c
Subject: Re: CTRL(x) macro (was: Re: What is a constant expression)
Summary: assert(iscntrl(CTRL('?'))); /* DEL is a control character */
Message-ID: <14972@haddock.ima.isc.com>
Date: 25 Oct 89 00:59:59 GMT
References: <1219@crdos1.crd.ge.COM> <8891@goofy.megatest.UUCP> <3786@solo6.cs.vu.nl> <1422@crdos1.crd.ge.COM>
Reply-To: karl@haddock.ima.isc.com (Karl Heuer)
Organization: Interactive Systems, Cambridge, MA 02138-5302
Lines: 8

In article <1422@crdos1.crd.ge.COM> davidsen@crdos1.UUCP (bill davidsen) writes:
>control characters ... are defined as the values from 00-37 octal...

That definition may have been the original one, but as far as C is concerned
the only definition of `control character' is `what iscntrl() tests for' --
and this does include DEL on ASCII systems.

Karl W. Z. Heuer (ima!haddock!karl or karl@haddock.isc.com), The Walking Lint