This is practically a copy/paste from the docs, so if the docs don't help you then this probably won't either, but here you go:
* In lib/MyApp/TT/Plugin/BBCodeFilter.pm: 
package MyApp::TT::Plugin::BBCodeFilter;

use base qw(Template::Plugin::Filter);

use Parse::BBCode;

my $bbc;
sub init {
  my $self = shift;

  my $name = $self->{_CONFIG}->{name} || 'bbcode';
  $self->install_filter($name);

  $bbc = Parse::BBCode->new;

  return $self;
}

sub filter {
  my ($self, $text) = @_;

  $text = $bbc->render($text);

  return $text;
}

1;

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* In the main application code: 
my %tpl_settings = (
                    ...
                    PLUGIN_BASE => 'MyApp::TT::Plugin',
                    ...
                   );
my $tt = Template->new(%tpl_settings);

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* In a random template file: 
[% USE BBCodeFilter -%]
<p>[% (comments || '(No Comments)') | bbcode %]</p>

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Simple as that. So what's actually causing you problems?

In reply to Re: Template Toolkit custom plugins? by dsheroh
in thread Template Toolkit custom plugins? by lindex

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


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