Anonymous Monk,
There are a plethora of modules on CPAN that could help you, I would suggest looking at the following search. Roll your own solutions with unknown data sources are likely to fail. With that said - let's assume your HTML is perfectly formatted and you want everything between the start and end HTML tags to include other HTML tags. 
#!/usr/bin/perl -w
use strict;
open (INPUT,"file") or die "Unable to open input : $!";
open (OUTPUT,">output") or die "Unable to open outpu : $!";
select OUTPUT;
$\ = "\n";

my $foundstart;
while (<INPUT>) {
    chomp;
    next unless ($foundstart || /<html *>/i);    
    if (/<html *>/i && ! $foundstart) {
        $_ =~ s/^.*?<html *>(.*)$/$1/i;
        $foundstart++;
        next unless($_);        
    }
    if ($_ =~ m|</html *>|i) {
        $_ =~ s|^(.*?)</html *>.*$|$1|i;
        print if($_);
        last;
    }
    print;    
}
close INPUT;
close OUTPUT;

[download]

Cheers - L~R

In reply to Re: Search and replace in html by Limbic~Region
in thread Search and replace in html by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
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