From owner-cvs-all  Sat May  1 15:10:12 1999
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Date: Sun, 2 May 1999 08:09:56 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199905012209.IAA17220@godzilla.zeta.org.au>
To: dcs@newsguy.com, kris@FreeBSD.org
Subject: Re: cvs commit: ports/lang/nawk Makefile ports/lang/nawk/files md5ports/lang/nawk/patches patch-aa patch-ab patch-ac patch-adpatch-ae
Cc: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org
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>>   Mar 5, 1999:
>>           after hearing from yet another innocent victim, changed
>>           isnumber to is_number to avoid the problem caused by
>>           freeBSD gratuitously and incorrectly including the name
>>           isnumber in the standard header file ctype.h.

s/innocent/guilty/ ...

Declaring or defining isnumber() in ctype.h is perfectly ANSI C conformant.
ANSI C reserves all names beginning with is[a-z].

>Well, we have been doing it since 1994, at the very least. What did
>BSD do before that?
>
>Anyway, it's only defined if neither _ANSI_SOURCE nor _POSIX_SOURCE
>are defined. Under what conditions are these defined?

Whenever an application chooses to do so.  They are supposed to reduce
the namespace to only those symbols required by ANSI C and POSIX.1
respectively.  This is much stricter than reducing the namespace to
the symbols permitted by the standards.  E.g., isnumber() is permitted
but not required.

Bruce


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