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Path: utzoo!watmath!clyde!cbosgd!ihnp4!houxm!whuxl!mike
From: mike@whuxl.UUCP (BALDWIN)
Newsgroups: net.lang.c
Subject: Re: CTRL(X) in ANSI standard
Message-ID: <621@whuxl.UUCP>
Date: Sun, 5-May-85 13:15:36 EDT
Article-I.D.: whuxl.621
Posted: Sun May  5 13:15:36 1985
Date-Received: Mon, 6-May-85 02:05:45 EDT
References: <10425@brl-tgr.ARPA>
Organization: AT&T Bell Laboratories, Whippany
Lines: 17

> #define CTRL(XX) ( ($XX)[0] & '\037') 
>	replaces
> #define CTRL(XX) ('XX' & '\037')

A more reasonable definition without any weirdness would be

#define	CTRL(c)	((c) & '\037')

So you use CTRL('g') instead of CTRL(g).  This way it looks more like
a real function call (rather than passing some nonexistent variable g).

Here's a silly though:  since '\xFC' has been added to ANSI C for hex
characters, how about '\^G' for control characters, ala ICON?  I never
did like the CTRL macro.
						Michael Baldwin
						AT&T Bell Labs
						harpo!whuxl!mike