Sorry, I really don't do the concept justice - a more comprehensive answer
is to say - if you want help w/ REs, get "Mastering Regular Expressions"
by J. Friedl
http://oreilly.com/catalog/9780596528126/
It's it a great, great book, up there w/ the Camel and "Perl Best
Practices". It covers more
>> You're supposed to use the \1 format to match a current match,
>> like a duplicated word
>> $ echo "her here hear hear hop hip hip ho!" | perl \
-pe 's/(\w+)\s+\1\s+/double "${1}s" /g;'
Barry B wrote:
> I am confused about this. I thought that a back-reference looks like
"$1", not "\1".
$ cat test.txt |perl -pe 's/(\w+)([A-Z])/\1\. \2/g'
made. Style
facilitated. One
Anti-magnetic. Quality
RE pedanticism: \1 et alia are only supposed to be used on the LHS of the
subst cmd. You'd want:
cat test.txt |perl -pe 's/(\w+)([A-Z])/\1\. \2/g'
or no need for cat (ye olde pipeline debate
hi curtis --
In a message dated 5/16/2009 7:56:26 AM Eastern Standard Time,
cle...@harrahs.com writes:
> 123FOO BAR
> ...
> --
> ...
> 123. FOO BAR
but i was thinking that 123FOO was *not* something
that would need punctuation: it's probably not the end of
one sentence and the be
009 8:55 PM
To: ari.constan...@gmail.com
Cc: activeperl@listserv.activestate.com
Subject: Re: Help with Regular Expression
hi ari and barry --
In a message dated 5/15/2009 6:20:40 PM Eastern Standard Time,
ari.constan...@gmail.com writes:
> On Fri, May 15, 2009 at 11:18 PM, Barry Brevik
wrote:
>
>
hi guys --
In a message dated 5/15/2009 8:55:30 PM Eastern Standard Time,
williamawalt...@aol.com writes:
> In a message dated 5/15/2009 6:20:40 PM Eastern Standard Time,
ari.constan...@gmail.com writes:
>
> > On Fri, May 15, 2009 at 11:18 PM, Barry Brevik wrote:
> >
> > > I am running
hi ari and barry --
In a message dated 5/15/2009 6:20:40 PM Eastern Standard Time,
ari.constan...@gmail.com writes:
> On Fri, May 15, 2009 at 11:18 PM, Barry Brevik
wrote:
>
> > I am running Active Perl 5.8.8.
> > ...
> > Difficulty: the fields contain hundreds of words both preceding and
On Fri, May 15, 2009 at 11:18 PM, Barry Brevik wrote:
> I am running Active Perl 5.8.8.
>
> I am converting a large enterprise database into a new system and have
> run across a free-form text field in which users have entered all manner
> of garbage.
>
> One scenario is where two sentences have b
