One our frustrations using jade and icanhaz (a javascript front end mustache implementation) was that when we were trying things that were obvious to us, jade would simply fail to template and we weren’t sure what was causing it.
Fortunately small TDD cycles and experimentation made us realise that it was the combination of new line characters and mustache code made jade work/break.
We would try something like this:
script(type="text/html", id="my_checkbox", class="partial") li label(for="{{code}}") {{name}} input(id="{{code}}", checked="checked", name="{{code}}", type="checkbox")
The set of statements above would be valid mustache (once converted to HTML) but jade complains because the {{name}} is on its own line. The fix was to use the pipe (|) character to force jade to recognise a line break. It looks like this now
script(type="text/html", id="my_checkbox", class="partial") li label(for="{{code}}") | {{name}} input(id="{{code}}", checked="checked", name="{{code}}", type="checkbox")
Simple, but not particularly obvious from the examples in their documentation.