Help for this page

Select Code to Download

Select or download this

#!/usr/local/bin/perl
#use strict;
use warnings;
...
TAG1 text three  TAG2
TAGS text four TAG2
TAG1 text five TAGT

Select or download this

Positive lookaround first:
 text one
         Negative lookaround:
...
         Negative lookaround:
TAGS text four
Positive lookaround first: