Suppose I do not subclass XML::Parser. But then, how do I pass parameters to XML::Parser handler methods and collect results of their run without using global variables of XML::Parser package? Only class that I get to handler methods is expat itself and there is no place for any aditional parameters/results of handler methods.

And if I subclass XML::Parser, only advantage that I gain is using my own package namespace for global variables instead of XML::Parser's namespace. This do not looks to me like a good example of object oriented programming style.

Possible silution is the one mirod suggested using Non-Expat-Options but it is just a little bit less ugly than these two.

There best solution will be forcing XML::Parser to use my custom subclass of XML::Parser::Expat instead of XML::Parser::Expat itself. Is there some way how to do that?