Reduce redundancy in handling interpolation codes
http://bugs.activestate.com/show_bug.cgi?id=101746
r=marky

(integrated from komodo (trunk) change 83330 by ericp)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@14075 b87d16e7-d29f-4ee1-b5ec-817d645d335f