Date: 07 Jul 1999 21:42:31 +0200 From: Dag-Erling Smorgrav <des@flood.ping.uio.no> To: Jamie Howard <howardjp@wam.umd.edu> Cc: Dag-Erling Smorgrav <des@flood.ping.uio.no>, freebsd-hackers@FreeBSD.ORG, tech-userlevel@netbsd.org, tech@openbsd.org Subject: Re: Replacement for grep(1) (part 2) Message-ID: <xzpyagss0uw.fsf@flood.ping.uio.no> In-Reply-To: Jamie Howard's message of "Wed, 7 Jul 1999 15:35:19 -0400 (EDT)" References: <Pine.GSO.4.10.9907071528400.9934-100000@rac10.wam.umd.edu>
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Jamie Howard <howardjp@wam.umd.edu> writes:
> On 7 Jul 1999, Dag-Erling Smorgrav wrote:
> > I see you switched to using extended regexps by default, and made -E a
> > no-op; this breaks the ports collection, so I changed it back.
>
> The FreeBSD, NetBSD, and OpenBSD manpage for grep says this:
>
> Grep understands two different versions of regular expression
> syntax: ``basic'' and ``extended.'' In GNU grep, there is
> no difference in available functionality using either syntax.
>
> Is this inaccurate or am I reading it wrong?
One or the other. Try it out for yourself.
root@flood /tmp# cat > foo
abcd efgh ijkl
abcd (efgh) ijkl
root@flood /tmp# grep -V
GNU grep version 2.0
usage: grep [-[AB] <num>] [-CEFGLVXHPRSZabchilnqsvwxy]
[-e <expr>] [-f file] [files ...]
root@flood /tmp# grep '(efgh)' foo
abcd (efgh) ijkl
root@flood /tmp# grep -E '(efgh)' foo
abcd efgh ijkl
abcd (efgh) ijkl
> > Don't use err() indiscriminately after a malloc() failure; malloc()
> > doesn't set errno.
> Shouldn't malloc be fixed? :)
Should, but probably won't in the near future. Oh well. I guess you
can just remove 'errno = ENOMEM' from grep_malloc() and grep_realloc()
and blame phk if anyone complains :)
DES
--
Dag-Erling Smorgrav - des@flood.ping.uio.no
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