Made some quick changes, now you can use ctags with emacs, and SciTE 
will parse ruby properly. (I can't get SciTE to use the ctags yet.)
http://sahuagin.ne.mediaone.net/~tcovert

the page provides ctags.patch  a unified patch applied against ctags-4.0.3
and
python.properties
which should replace the same file in your SciTE dir.