[lxml-dev] special string subclasses for XPath string results

[Stefan Behnel]

Hi,

one more note on this.

Stefan Behnel wrote:
> Attributes and text nodes are now handled. String results (such as returned by
> the string() function) will remain plain strings - no way to recover here.

I generalised this to make all XPath string results 'smart' subclasses of
either str or unicode. For the cases where we return strings that do not have
a clear origin (e.g. assembled by the XPath string() or concat() functions),
the getparent() method will just return None, as for the root Element of a
tree. That way, you can avoid doing any hasattr() stuff and just call
getparent() directly.

Stefan