Date: Wed, 25 Jan 2006 20:15:47 +0100 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Julian Elischer <julian@elischer.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/include printf.h src/lib/libc/stdio Makefile.inc xprintf.c xprintf_errno.c xprintf_quote.c xprintf_vis.c Message-ID: <19618.1138216547@critter.freebsd.dk> In-Reply-To: Your message of "Wed, 25 Jan 2006 10:49:28 PST." <43D7C838.4000202@elischer.org>
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In message <43D7C838.4000202@elischer.org>, Julian Elischer writes:
>Poul-Henning Kamp wrote:
>> FreeBSD src repository
>>
>> Modified files:
>> include printf.h
>> lib/libc/stdio Makefile.inc xprintf.c xprintf_vis.c
>> Added files:
>> lib/libc/stdio xprintf_errno.c xprintf_quote.c
>> Log:
>> Make the %V{is} extension handle a NULL pointer like %s does: output "(null)"
>>
>> Add %M{essage} extension which prints an errno value as the
>> corresponding string if possible or numerically otherwise.
>
>Is this compatible with anyone else?
Not that I know off. It is an optional extension which you have to
ask for explicitly, so it is non-intrusive as far as stadnards go.
>basically, did this idea come from somewhere? or is it new?
Extending printf is as old as at least SYSIII.
The specific implementation was written to be compatible with GLIBC.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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