rtomayko/tilt — pull request #183 by mattwildig (2013-03-21 22:15:13+00:00)
Title: Check for ::Erubis::Eruby in Erubis template

If the Erubis module had been defined but not the Eruby class (which
can happen if you require erubis/tiny) the Erubis template fails with an
"uninitialized constant" error.

Check for the specific Eruby class rather than just the containing
module in `engine_initialised?`