http://ctags.sourceforge.net/languages.html
Languages Supported by Exuberant Ctags:
Ant
Assembler
ASP
Awk
BASIC
BETA
C
C++
C#
COBOL
DOS Batch
Eiffel
Erlang
Flex
Fortran
HTML
Java
JavaScript
Lisp
Lua
Make
MATLAB
Objective Caml
Pascal
Perl
PHP
PL/SQL
Python (Pyrex/Cython)
REXX
Ruby
Scheme
Shell scripts (Bourne/Korn/Z)
S-Lang
SML (Standard ML)
Tcl
TeX
Vera
Verilog
VHDL
Vim
YACC