I inadvertently removed my `app/resources/tmp/cache/templates` folder
and PHP was unable to write the compiled templates in it.
Instead of throwing an exception/error, the Compiler returned the
unparsed file without telling anyone what was happening (no error, no
With `$foo; ?>` appearing on the page I quickly saw that there was a
problem but if I had `short_tags` turned on, the unescaped variable
would have been printed (hello XSS!) and I would never have noticed it.
This behavior is dangerous but needed for the diagnostic page to show
properly on a default misconfigured installation of lithium. Short tags
are purposedly avoided on its template so allowing it to use the
compiler fallback is not a security/usability threat.