Double quotes are incorrectly parsed in <!-- DEFINE -->. For example,

<!-- DEFINE $BLAH = '<a href="blah">blah</a>' -->

is compiled into this:

$this->_tpldata['DEFINE']['.']['BLAH'] = '<a href=\"blah\">blah</a>';

with double quotes escaped, so when I use {$BLAH} in template html output is this:

<a href=\"blah\">blah</a>