Date: Wed, 21 Feb 2001 14:50:56 +0900 From: "Akinori MUSHA" <knu@iDaemons.org> To: "Daniel C. Sobral" <dcs@newsguy.com> Cc: current@FreeBSD.ORG Subject: Re: find(1) -regex/-iregex Message-ID: <861yssr3cv.wl@archon.local.idaemons.org> In-Reply-To: <863dd8r54c.wl@archon.local.idaemons.org> References: <8666i588p4.wl@archon.local.idaemons.org> <3A93376D.B371FCD1@newsguy.com> <863dd8r54c.wl@archon.local.idaemons.org>
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At Wed, 21 Feb 2001 14:12:51 +0900, I wrote: > At Wed, 21 Feb 2001 12:35:09 +0900, > Daniel C. Sobral wrote: > > I'm not familiar with find sources, but it seems to me you execute > > regcomp() for each file name to be compared? If so... change that! :-) > > Regcomp() does expensive setup so that regexec() can be run > > inexpensively many times over. > > Indeed. I'll do it soon, thanks. Updated. http://people.FreeBSD.org/~knu/misc/find_regex.diff > > You forgot -E (use extended regexp syntax), and the example you show > > above is extended regexp syntax, not basic regexp syntax. Well, it was added after I had posted the original article. The latest one's find.1 mentions it. .It Fl E Interpret regular expressions followed by .Ic -regex and .Ic -iregex options as extended (modern) regular expressions rather than basic regular expressions (BRE's). The .Xr re_format 7 manual page fully describes both formats. As for the syntax my examples conform to, I think they are valid both for basic and extended. True if the whole path of the file matches .Ar pattern using regular expression. To match a file named ``./foo/xyzzy'', you can use the regular expression ``.*/[xyz]*'' or ``.*/foo/.*'', but not ``xyzzy'' or ``/foo/''. Thanks for your suggestions. -- / /__ __ Akinori.org / MUSHA.org / ) ) ) ) / FreeBSD.org / Ruby-lang.org Akinori MUSHA aka / (_ / ( (__( @ iDaemons.org / and.or.jp "We're only at home when we're on the run, on the wing, on the fly" To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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