Getting etags to Index Clojure Files
etags is a great way to move around in a project, it's fast and doesn't get in your way, but out of the box etags does not recognize clojure files even with the
option, it won't index correctly. Fortunately etags does support an option to take in a file containing regular expressions to recognize unknown languages, save the following regular expressions in a file,
/[ \t\(]*def[a-z]* \([a-z-!]+\)/\1/ /[ \t\(]*ns \([a-z.]+\)/\1/
Then running the following command will get etags to recognize and index clojure files.
find . -name '*.clj' | xargs etags --regex=@/path/to/tags.file