[Metafacture] Character classes in data source

[Christoph, Pascal]

Hello *,

in metamorph, is there a possibility to use more then wildcards ('*','?')
defining the data source? I would like to use simple character classes. For
instance, something like this:

<rules>
	<data source="902-1.9|907-1.9|.../>
</rules>

should be expressable by this:

<rules>
	<data source="9[0123445678][27]-[-1].9/>
</rules>

-o