groupdock/grunt-handlebars — pull request #6 by timoxley (2012-07-05 18:30:04+00:00)
Title: task now fails if there's an error running the handlebars command

if handlebars doesn't compile, grunt doesn't tell you about it. This is bad since it also doesn't wipe out the file it's writing to, so you can end up not noticing your template hasn't compiled.