Parser Fragility

Hi Will,

I was just testing the latest pyblosxom git on my existing blog entries
and they die:

File "/home/spaetz/sspaeth.de/pyblosxom/Pyblosxom/pyblosxom.py", line 439, in run_pyblosxom
     p.run()
File "/home/spaetz/sspaeth.de/pyblosxom/Pyblosxom/pyblosxom.py", line 165, in run
     blosxom_handler(self._request)
File "/home/spaetz/sspaeth.de/pyblosxom/Pyblosxom/pyblosxom.py", line 925, in blosxom_handler
     renderer.render()
File "/home/spaetz/sspaeth.de/pyblosxom/Pyblosxom/renderers/debug.py", line 115, in render
  escv(content.get('filename', 'No such file\\n')))
File "/home/spaetz/sspaeth.de/pyblosxom/Pyblosxom/entries/base.py", line 279, in get
  return self.__getitem__(key, default)
File "/home/spaetz/sspaeth.de/pyblosxom/Pyblosxom/entries/base.py", line 257, in __getitem__
  return self.get_metadata(key, default)
File "/home/spaetz/sspaeth.de/pyblosxom/Pyblosxom/entries/fileentry.py", line 96, in get_metadata
  self._populatedata()
File "/home/spaetz/sspaeth.de/pyblosxom/Pyblosxom/entries/fileentry.py", line 151, in _populatedata
  entrydict = eparser(self._filename, self._request)
File "/home/spaetz/sspaeth.de/pyblosxom/Pyblosxom/pyblosxom.py", line 970, in blosxom_entry_parser
     entry_data[meta[0].strip()] = meta[1].strip()
IndexError: list index out of range

This happens when parsing the #meta data in blog posts, I think. It
absolutely expects to find something after a "#foo " or it will break. I
think we should make pyblosxom a bit more robust, an empty #tags set for
example might be uncommon but no reason to make pyblosxom crash.

Also, I happened to run the tags plugin with the command categoriestotags
previously which inserted loads of "#tags \r" lines, which caused above
crash to occur. Should the category plugin try to insert empty #tags
lines?

Sebastian

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