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Cc: kline@thought.org, freebsd-questions@freebsd.org
Subject: Re: regex question....
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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).