Date: Sat, 4 Dec 2010 20:32:57 -0800 From: Gary Kline <kline@thought.org> To: xSAPPYx <xsappyx@gmail.com> Cc: perryh@pluto.rain.com, jgimer@gmail.com, freebsd-questions@freebsd.org Subject: Re: regex question.... Message-ID: <20101205043257.GA3854@thought.org> In-Reply-To: <AANLkTinLu9Uiu0WRfo_-5QDWDnuQG7sXfGqFaVgXAd5u@mail.gmail.com> References: <20101205002602.GA27499@thought.org> <AANLkTinXsSHj4kLha9SgR4T0Rn7TvH1cKmZ-pYe%2BgC-k@mail.gmail.com> <4cfaf16b./uHAeLS0wfpxq8FB%perryh@pluto.rain.com> <AANLkTinLu9Uiu0WRfo_-5QDWDnuQG7sXfGqFaVgXAd5u@mail.gmail.com>
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On Sat, Dec 04, 2010 at 06:49:45PM -0800, xSAPPYx wrote: > On Sat, Dec 4, 2010 at 17:56, <perryh@pluto.rain.com> wrote: > > Joshua Gimer <jgimer@gmail.com> wrote: > > > >> On Sat, Dec 4, 2010 at 5:26 PM, Gary Kline <kline@thought.org> wrote: > >> > I have tried :1,$/s/[0-9]][0-9][0-9]/foo/g > >> Why not just %s/[0-9]*/foo/g > > > > Too broad -- it will match the null string. (* means "zero or more > > instances of" whatever preceded it.) > > > > Best RE I know for integers is > > > > [1-9][0-9]* > > > > (or replace the 1 with a 0 if the strings in question might have > > leading zeros). > > _______________________________________________ > > freebsd-questions@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > > > Also, the + operator means '1 or more' but needs escaped: %s/[0-9]\+/foo/g Okay. I thought that the + must be perl-only regex... . Then, nutshell, the most simple expression [fewest keystrokes] would be: %s/[1-0][0-9]*/foo/g > -- Gary Kline kline@thought.org http://www.thought.org Public Service Unix Journey Toward the Dawn, E-Book: http://www.thought.org The 7.97a release of Jottings: http://jottings.thought.org
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