Newsgroups: comp.lang.c
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: preprocessor fun
Message-ID: <1989Apr9.232542.24881@utzoo.uucp>
Organization: U of Toronto Zoology
References: <1989Apr7.192628.4547@utzoo.uucp>
Date: Sun, 9 Apr 89 23:25:42 GMT

In article <1989Apr7.192628.4547@utzoo.uucp> I wrote:
>	#ifdef notdef
>	#hahafooledyou
>	#endif
>
>... Show me where it says that the middle line is a directive at all.
>I claim that it is two preprocessing tokens which do not happen to be a
>directive...

To head off a swarm of wrong followups, there is indeed a rule which
says that the "#" punctuator cannot appear except in directives.  However,
the "#" in the middle line is not a punctuator -- it falls under the
"non-white-space character which cannot be any of the above" class of
preprocessor token.  Said rule is, of course, the reason why it cannot
be a punctuator.

Note that it is crucial that the funny non-directive be #ifdefed out,
because that preprocessing token can't be converted to a real token.
-- 
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