when using function on a template that is references a global, the
reference is traded as an undeclared param.
i.e.
>>> tpl = "{{a}}"
>>> from jinja2 import meta, Environment
>>> env = Environment()
>>> env.globals['a'] = 'b'
>>> print env.from_string(tpl).render()
b
>>> print meta.find_undeclared_variables(env.parse(tpl))
set(['a'])
is this deliberate or a bug? i think the desired behavior is that the
global is recognized.
what do you think?
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