five.pt: combination of tal:condition and tal:attribute causes 'UnboundLocalError: local variable '__default_XXXXXXX' referenced before assignment

[LeoRochael]

The following source:

<tal:block>
  <tag tal:condition="False"
       tal:attributes="attrib string:false" />
  <tag tal:condition="True"
       tal:attributes="attrib string:true" />
</tal:block>

Causes this error:

Traceback (most recent call last):
  [...]
  File "src/five.pt/src/five/pt/patches.py", line 128, in __call__
    result = self.template.render(**context)
  File "src/five.pt/eggs/z3c.pt-2.1.3-py2.6.egg/z3c/pt/pagetemplate.py", line 147, in render
    return base_renderer(**context)
  File "src/five.pt/develop/Chameleon/src/chameleon/zpt/template.py", line 211, in render
    return super(PageTemplate, self).render(**vars)
  File "src/five.pt/develop/Chameleon/src/chameleon/template.py", line 188, in render
    self._render(stream, econtext, rcontext)
  File "91b40fe496271d2b65e1ff5835bdf07ac8f59b53.py", line 113, in render
UnboundLocalError: local variable '__default_53515600' referenced before assignment

I could reproduce it with a TTW ZPT, but not with pure Chameleon (i.e. adding the above source to src/chameleon/tests/inputs and the the correct output to src/chameleon/tests/outputs worked).

[LeoRochael (leorochael)]

This bug is fixed by pinning:

sourcecodegen = 0.6.14

This minimum dep has been committed to five.pt in setup.py, but meanwhile users of five.pt can install it (or pin it in buildout) by themselves.