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
19882	Forloop with a filter that has an argument containing whitespace raises a TemplateSyntaxError	Baptiste Mispelon	Baptiste Mispelon	"In a template, when looping over a variable that has a filter with an argument containing whitespace, a `TemplateSyntaxError` will be thrown.

Here's a small test case to reproduce the issue (the first template fails while the other two work as expected):
{{{#!python
from django.template import Template, Context

for tpl in [
        '{% for x in """"|add:""a b c"" %}{{ x }}{% endfor %}', # Doesn't work
        '{% with v=""""|add:""a b c"" %}{% for x in v %}{{ x }}{% endfor %}{% endwith %}',
        '{% with v=""a b c"" %}{% for x in """"|add:v %}{{ x }}{% endfor %}{% endwith %}'
    ]:
    s = Template(tpl).render(Context())
    assert s == u'a b c'
}}}

Here's the traceback that this produces:
{{{
Traceback (most recent call last):
  File ""my_script.py"", line 8, in <module>
    s = Template(tpl).render(Context())
  File ""/path/to/venv/local/lib/python2.7/site-packages/django/template/base.py"", line 125, in __init__
    self.nodelist = compile_string(template_string, origin)
  File ""/path/to/venv/local/lib/python2.7/site-packages/django/template/base.py"", line 153, in compile_string
    return parser.parse()
  File ""/path/to/venv/local/lib/python2.7/site-packages/django/template/base.py"", line 278, in parse
    compiled_result = compile_func(self, token)
  File ""/path/to/venv/local/lib/python2.7/site-packages/django/template/defaulttags.py"", line 758, in do_for
    "" 'for x in y': %s"" % token.contents)
django.template.base.TemplateSyntaxError: 'for' statements should use the format 'for x in y': for x in """"|add:""a b c""
}}}

It looks like `token.contents.split()` in the code of the tag gets confused by the whitespace and splits the string into too many parts.

Since the code searches for the ""in"" keyword from the end (position -2 since we are not reversed), then it fails."	Bug	closed	Template system	dev	Normal	fixed	forloop filter TemplateSyntaxError		Accepted	0	0	0	0	0	0