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
3090	[Patch]Extend enclose tag process	limodou@…	nobody	"I want to extend `if` to `pyif` tag. And I also want to implement `elif` tag support, just like:

{{{
    {% pyif i == 1 %}
        <p>i=1</p>
    {% elif i == 3 %}
        <p>i=3</p>
    {% else %}
        <p>other</p>
    {% endif %}
}}}

So you can see `elif` has en expression. But I found current django `template/__init__.py` can not support enclose tag process just like `elif`, because it has extra info. And the code in `template/__init__.py` is:

{{{
elif token.token_type == TOKEN_BLOCK:
    if token.contents in parse_until:
        # put token back on token list so calling code knows why it terminated
        self.prepend_token(token)
        return nodelist
    try:
        command = token.contents.split()[0]
    except IndexError:
        self.empty_block_tag(token)
}}}

So you can see django use `token.contents in parse_until` to determin if it encounter an enclose tag, and doesn't support extra info after the enclose tag. So if I extend `elif` and add extra expression, it'll failed and raise:

{{{
Invalid block tag: 'elif'
}}}

So I made this patch so that django can just judge the tagname but not the whole token.contents."	enhancement	new	Core framework		normal				Unreviewed	1	0	0	0	0	0