Genshi confused by position() in xpath

[mats_a@…]

Hello,

I noticed that the position() function in the xpath specification isn't supported by Genshi. Genshi returns the error:

INPUT: <py:match path="*[@delimiter]/*[position()!=last()]">[apparend delimiter]</py:match>

(given an element with the delimit=", " attribute, find all of its non-last children and append ", " to them)

ERROR:
  File "build/bdist.linux-i686/egg/genshi/path.py", line 558, in _function_call
    self.filename, self.lineno)
PathSyntaxError: Unsupported function "position" (/home/mats/documents/.../myfile.html, line 53)

Specification?: ​http://www.w3.org/TR/xpath

Best wishes, Mats

[cmlenz]

Genshi does not provide full XPath support, mostly due to its streaming nature. The limitations of the XPath implementation are documented:

Using XPath: Limitations

In this case, neither position() nor last() are supported.