[rt-users] mail body: HTML with embedded CSS

[Jesse Vincent]

Text::Template is the perl module RT uses for templates.

It uses { and } for template delimiters. 

http://search.cpan.org/~mjd/Text-Template-1.45/lib/Text/Template.pm

should show you how to escape your templates - specifically:

http://search.cpan.org/~mjd/Text-Template-1.45/lib/Text/Template.pm#JavaScript