Newsgroups: comp.std.c
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: Macro names imbedded in pp-numbers [repost]
Message-ID: <1989Nov17.171025.18983@utzoo.uucp>
Organization: U of Toronto Zoology
References: <11134@riks.csl.sony.co.jp>
Date: Fri, 17 Nov 89 17:10:25 GMT

In article <11134@riks.csl.sony.co.jp> diamond@ws.sony.junet (Norman Diamond) writes:
>... Does anyone think we can appeal to reason in this case,
>so that implementations might be allowed to expand macros that are
>found as independent real-tokens even though they're not separate
>preprocessor-tokens?

I don't think the situation can arise, actually.  A careful reading of
2.1.1.2 item 7 yields:  "Each preprocessing token is converted into a
token."  Note the singular pronoun; it's in there because I pointed out
that there was no requirement elsewhere that the conversion be one-to-one.
A preprocessing token which cannot be converted into a single real token
is illegal.
-- 
A bit of tolerance is worth a  |     Henry Spencer at U of Toronto Zoology
megabyte of flaming.           | uunet!attcan!utzoo!henry henry@zoo.toronto.edu