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Date:      Sun, 5 Oct 1997 23:41:52 +0000 (GMT)
From:      Terry Lambert <tlambert@primenet.com>
To:        brian@awfulhak.org (Brian Somers)
Cc:        Shimon@i-Connect.Net, freebsd-hackers@FreeBSD.ORG
Subject:   Re: Minor error (?) in regex.h
Message-ID:  <199710052341.QAA24216@usr05.primenet.com>
In-Reply-To: <199710050916.KAA11200@awfulhak.demon.co.uk> from "Brian Somers" at Oct 5, 97 10:16:34 am

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> The stuff in /usr/include isn't meant to be standalone - it's a 
> hysterically religious thing.

Having to do with relative compilation times based on how the C
preprocessor works.

The problem with making the cpp "know" the file to be included is
already in scope is truly religious history: you can't be sure
that some idiot trying to program C++ in C didn't define something,
#include a file which ##'ed the something as a prefix/suffix, then
redefined the thing, and included the same file again (think of
"template classes for C" and you will get the -- nauseating -- picture).

In addition, there are know dwiddley's (a dwiddley is someone who puts
code in an include file).


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.



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