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From: jim@ism780.UUCP
Newsgroups: net.lang.c
Subject: Re: Re: Forming composite tokens using / - (nf)
Message-ID: <160@ism780.UUCP>
Date: Fri, 11-May-84 00:02:43 EDT
Article-I.D.: ism780.160
Posted: Fri May 11 00:02:43 1984
Date-Received: Sun, 13-May-84 07:08:49 EDT
Lines: 23

#R:randvax:-178200:ism780:12500005:000:597
ism780!jim    May 10 10:32:00 1984

> Another alternative (which is probably equally offensive):
>    |
>    |#define cat(a,b) a\
>    |b
>    |
> At least this doesn't rely on the preprocessor stripping comments.
> But it is still likely to be non-portable.

Due to typical AT&T brain damage, this does not work in System V, where
the backslash-newline is turned into a space (idiots!).

A method guaranteed to work anywhere is

#define IDENT(x)x
#define CAT(a,b)IDENT(a)b

Be sure that you use CAT(x,y) instead of, e.g., CAT(x, y), since the white
space is part of the macro argument.

-- Jim Balter, Interactive Systems (ima!jim)