In Jinja 1.0 this is possible using {# foo #}.
Regards,
Armin
It occurs to me that {% raw %}{% endraw %} is actually even more
useful than {# #} for commenting out blocks of code - it will still
show up in html, but when developing/testing, you can ignore that. The
important thing is that the execution of the commented out code was
prevented.
Can't wait to start using 1.0...