I'm calling compass from scripting container.
When trying to use 'compass watch' command.

The following error occurs:

NoMethodError on line ["87"] of path/to/gems/fssm-0.2.10/lib/fssm/path.rb: undefined method `is_virtual?' for <Pathname:/tmp/1384933325506-0>:Pathname

I checked the code of fssm. And found that Pathname is a class extending ruby's default Pathname class. And it has a method `is_virtual?'

https://github.com/ttilley/fssm/blob/master/lib/fssm/pathname.rb
https://github.com/ttilley/fssm/blob/master/lib/fssm/path.rb

However, this method is_virtual? is not recognized by jruby.

I also tried to call 'compass watch' from command line using jruby. The error is the same.

Since it runs successfully in MRI. I suppose this is a bug of jruby.

Please check it.