Thanks for your feedback, it's very interesting and appreciated.
The script will run as server and therefore I'd like it to tun in tainted mode, so I figured out another way to do things:
#!/usr/bin/perl -w -T

use strict;

# builtin triggers
my %triggers;

# add triggers from params
my $trigger_name = shift @ARGV;
my $trigger_action_str = shift @ARGV;

$triggers{$trigger_name} = $trigger_action_str;

my $buff = "You are fired!";

foreach my $trigger ( keys ( %triggers ) )
{
  if ( $buff =~ /$trigger/ )
  {
    my $c1 = $1;
    
    my $txt = $triggers{$trigger};
    $txt =~ s/\$1/$c1/g;

    print $txt;
  }
}

[download]
Yes, that's not elegant for I should save each memory container $1, $2, and so on to be general enough, but at least I can run it in tainted mode:
perl -T triggers4.pl "You are (\w+)." "Your status: $1"

So I get:
Your status: fired

Cheers,
tceng

In reply to Re^4: Using pattern match by tceng
in thread Using pattern match by tceng

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.