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From: kuyper@wizard.net (James Kuyper)
Newsgroups: comp.std.c++
Subject: Re: Definition of /header/ and/or /source file/  - refer to POSIX commiteee?
Date: Mon, 19 Apr 2004 17:36:41 +0000 (UTC)
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nagle@animats.com (John Nagle) wrote in message news:<273gc.37698$tj4.2001@newssvr29.news.prodigy.com>...
> Matthew Collett wrote:
> 
> > In article <3cIfc.51826$75.2848@newssvr25.news.prodigy.com>,
> >  nagle@animats.com (John Nagle) wrote:
> > 
> > 
> >> Perl searches entire subtrees for
> >>included files; the C++ preprocessor does not.  
> > 
> > 
> > I hadve always understood the way the preprocessor searches for includes 
> > to be entirely implementation defined...
> 
>    Does that mean that this issue should be referred to the
> IEEE's Portable Application Standards Committee, for incorporation
> into the POSIX standard?  If the C++ committee explicitly takes the position
> that the syntax and semantics of what appears within the quote marks of "include"
> lies outside their scope, the issue properly belongs to PASC.

The standard specifies a large portion of implementation-defined
behavior for header names, without leaving it completely unspecified:

1. "How the places are specified or the header identified is
implementation-defined."
2. "the named source file is searched for in an implementation-define
manner."
3. "The method by which a sequence of preprocessing tokens between a <
and a > processing token pair o a pair of " characters is combined
into a single header name processin token is implementation-defined.
4. "The mapping between the delimited sequence and the external source
file name is implemenation-defined."
5. There is an "implementation-defined nesting limit" for #includes.

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