regex question....

[RW]

On Sat, 4 Dec 2010 20:32:57 -0800
Gary Kline <kline at thought.org> wrote:

> On Sat, Dec 04, 2010 at 06:49:45PM -0800, xSAPPYx wrote:

> > 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... .

It's from "Extended" REs  rather than perl specifically, it  works
with sed -E but not plain sed. Not sure about vi.