Date: Fri, 11 Jan 2002 10:16:50 -0600 From: "Jacques A. Vidrine" <n@nectar.cc> To: Bruce Evans <bde@FreeBSD.org> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/lib/libc/locale isblank.3 Message-ID: <20020111161650.GA55753@madman.nectar.cc> In-Reply-To: <200201111521.g0BFL4i82482@freefall.freebsd.org> References: <200201111521.g0BFL4i82482@freefall.freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, Jan 11, 2002 at 07:21:04AM -0800, Bruce Evans wrote:
> bde 2002/01/11 07:21:04 PST
>
> Modified files:
> lib/libc/locale isblank.3
> Log:
> Removed assertion that isblank() conforms to C90 too. This assertion
> is correct but less than useful. There is some uncertainty about whether
> isblank() is in C99, but it is certainly not in C90. It just conforms
> to C89 because it is a conforming extension.
Why is there uncertainty? It is in my copy of ISO/IEC 9899:1999:
7.4.1.3 The isblank function
Synopsis
1 #include <ctype.h>
int isblank(int c);
Description
2 The isblank function tests for any character that is a standard blank
character or is one of a locale-specific set of characters for
which isspace is true and that is used to separate words within a
line of text. The standard blank characters are the following:
space (' '), and horizontal tab ('\t'). In the "C" locale, isblank
returns true only for the standard blank characters.
Also, Appendix J.4 `Locale-specific behavior' says: ``The following
characteristics of a hosted environment are locale-specific and are
required to be documented by the implementation: [...] The sets of
characters tested for by the [...] isblank [...] functions.''
Cheers,
--
Jacques A. Vidrine <n@nectar.cc> http://www.nectar.cc/
NTT/Verio SME . FreeBSD UNIX . Heimdal Kerberos
jvidrine@verio.net . nectar@FreeBSD.org . nectar@kth.se
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20020111161650.GA55753>