id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
20434	Have a template tag grammar instead of handling token/parser for every tag, and make it possible to introspect the grammar.	jonathanslenders	jonathanslenders	"Right now, if people use @register.simpletag (or assignment_tag/inclusion_tag), a compiled parser function will be registered in the library.tags mapping.

This however, is insufficient, if you need to do some introspection on the available template tags. I'd like to know for instance which template tags in module X are an instance of simpletag and would thus create a SimpleNode.

Right now, we are unable to accurately build a real AST from the template without manually defining which templatetags behave in which way. This is also required for AST transformations, like template compression and such.

I guess, it would be great to encourage people to always use @register.simpletag or anything that uses the built-in Node classes of Django. We can't force that, but it has a lot of advantages.

"	New feature	assigned	Template system		Normal			berker.peksag@…	Accepted	0	0	0	0	0	0