Is there already a simple way to cloak emails in comments?

Otherwise I am worried whether the emails that my guests share in forums will be picked up by spambots and other nasty stuff.

The code for finding emails is

function cloak_emails ($comment)
{
preg_match_all("/\b\w+\@\w+[\.\w+]+\b/", $comment, $email);

and the code for cloaking them in Joomla is

$emcloaked = JHTML::_('Email.cloak',$email);
echo $emcloaked;

I just don't know where and how I should insert them in compojoom
It would be reasonable to cloak them already while saving, so it would not run all the time when the comments are viewed.