Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!ginosko!aplcen!haven!adm!smoke!gwyn
From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.std.c
Subject: Re: Question about ANSI preprocessor
Message-ID: <11163@smoke.BRL.MIL>
Date: 28 Sep 89 02:26:20 GMT
References: <10879@riks.csl.sony.co.jp>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 7

In article <10879@riks.csl.sony.co.jp> diamond@ws.sony.junet (Norman Diamond) writes:
>According to the ANSI standard, does the following code cause
>expansion of the preprocessor macro "huh"?

No, as a general design principle the preprocessor is not required to
back up, apart from the quite limited case of rescanning the
replacement buffer.