Improved assignment_tag

[Choongmin Lee]

Is it only me who needs a simple tag with optional assignment, e.g. that both {% mytag %} and {% mytag as varname %} are possible?

Attached is a patch that make the assignment optional for assignment_tag.

If this change of behavior of assignment_tag is not acceptable, then how about adding a new decorator like 'optional_assignment_tag', or adding a new parameter to assignment_tag?

[Anssi Kääriäinen]

Please clarify more why and how this should be used, as I don't get
the use-case.

BTW patches aren't usually attached to django-developers posts, we use
Trac for that (https://code.djangoproject.com/).

- Anssi