Hey,
What is wrong with making extensions work right now both with and without
it?
+1. I don't see any harm done in adding such conditional checks, and they solve the problem at hand. We probably want to add them in any case, unless breaking compatibility with MediaWiki older then 1.21 is acceptable.
Cheers
-- Jeroen De Dauw http://www.bn2vs.com Don't panic. Don't be evil. --