[XML-SIG] gray areas in Python SAX API

[Lars Marius Garshol]

* Lars Marius Garshol
| 
| Hmmmm. I have no strong opinion on this, but unless I am mistaken it
| is impossible to implement this in PyExpat, and that suggests to me
| that we should leave it optional. Does anyone have good reasons why
| it should be mandatory?

* Alexandre Fayolle
| 
| "All XMLReaders are required to support setting
| http://xml.org/sax/features/namespaces to true and
| http://xml.org/sax/features/namespace-prefixes to false."
| 
| My opinion is that it is a reasonable requirement. 

I think so too, and the fact that it's impossible for us to make our
main parser support this just confirms that. 

| Please note that this does not require any change in Expat. Just the
| wrapper should not raise an exception when setting
| namespace-prefixes to false.

All we need to do is to make expatreader recognize the feature and
keep it fixed to false. I can do that this evening.
 
| If we choose to do things differently, I'd say we should document this. 

We should document it anyway, I think.

--Lars M.