Here's a full list of supported languages:

• Cucumber ('*.feature’)

• abap ('*.abap’)

• ada ('.adb’, ‘.ads’, ‘*.ada’)

• ahk ('.ahk’, ‘.ahkl’)

• apacheconf ('.htaccess’, ‘apache.conf’, ‘apache2.conf’)

• applescript ('*.applescript’)

• as ('*.as’)

• as3 ('*.as’)

• asy ('*.asy’)

• bash ('.sh’, ‘.ksh’, ‘.bash’, ‘.ebuild’, ‘*.eclass’)

• bat ('.bat’, ‘.cmd’)

• befunge ('*.befunge’)

• blitzmax ('*.bmx’)

• boo ('*.boo’)

• brainfuck ('.bf’, ‘.b’)

• c ('.c’, ‘.h’)

• cfm ('.cfm’, ‘.cfml’, ‘*.cfc’)

• cheetah ('.tmpl’, ‘.spt’)

• cl ('.cl’, ‘.lisp’, ‘*.el’)

• clojure ('.clj’, ‘.cljs’)

• cmake ('*.cmake’, ‘CMakeLists.txt’)

• coffeescript ('*.coffee’)

• console ('*.sh-session’)

• control (‘control’)

• cpp ('.cpp’, ‘.hpp’, ‘.c++’, ‘.h++’, ‘.cc’, ‘.hh’, ‘.cxx’, ‘.hxx’, ‘*.pde’)

• csharp ('*.cs’)

• css ('*.css’)

• cython ('.pyx’, ‘.pxd’, ‘*.pxi’)

• d ('.d’, ‘.di’)

• delphi ('*.pas’)

• diff ('.diff’, ‘.patch’)

• dpatch ('.dpatch’, ‘.darcspatch’)

• duel ('.duel’, ‘.jbst’)

• dylan ('.dylan’, ‘.dyl’)

• erb ('*.erb’)

• erl ('*.erl-sh’)

• erlang ('.erl’, ‘.hrl’)

• evoque ('*.evoque’)

• factor ('*.factor’)

• felix ('.flx’, ‘.flxh’)

• fortran ('.f’, ‘.f90’)

• gas ('.s’, ‘.S’)

• genshi ('*.kid’)

• glsl ('.vert’, ‘.frag’, ‘*.geo’)

• gnuplot ('.plot’, ‘.plt’)

• go ('*.go’)

• groff ('.(1234567)', ‘.man’)

• haml ('*.haml’)

• haskell ('*.hs’)

• html ('.html’, ‘.htm’, ‘.xhtml’, ‘.xslt’)

• hx ('*.hx’)

• hybris ('.hy’, ‘.hyb’)

• ini ('.ini’, ‘.cfg’)

• io ('*.io’)

• ioke ('*.ik’)

• irc ('*.weechatlog’)

• jade ('*.jade’)

• java ('*.java’)

• js ('*.js’)

• jsp ('*.jsp’)

• lhs ('*.lhs’)

• llvm ('*.ll’)

• logtalk ('*.lgt’)

• lua ('.lua’, ‘.wlua’)

• make ('.mak’, ‘Makefile’, ‘makefile’, ‘Makefile.', ‘GNUmakefile’)

• mako ('*.mao’)

• maql ('*.maql’)

• mason ('.mhtml’, ‘.mc’, ‘*.mi’, ‘autohandler’, ‘dhandler’)

• markdown ('*.md’)

• modelica ('*.mo’)

• modula2 ('.def’, ‘.mod’)

• moocode ('*.moo’)

• mupad ('*.mu’)

• mxml ('*.mxml’)

• myghty ('*.myt’, ‘autodelegate’)

• nasm ('.asm’, ‘.ASM’)

• newspeak ('*.ns2’)

• objdump ('*.objdump’)

• objectivec ('*.m’)

• objectivej ('*.j’)

• ocaml ('.ml’, ‘.mli’, ‘.mll’, ‘.mly’)

• ooc ('*.ooc’)

• perl ('.pl’, ‘.pm’)

• php ('.php’, ‘.php(345)')

• postscript ('.ps’, ‘.eps’)

• pot ('.pot’, ‘.po’)

• pov ('.pov’, ‘.inc’)

• prolog ('.prolog’, ‘.pro’, ‘*.pl’)

• properties ('*.properties’)

• protobuf ('*.proto’)

• py3tb ('*.py3tb’)

• pytb ('*.pytb’)

• python ('.py’, ‘.pyw’, ‘.sc’, ‘SConstruct’, ‘SConscript’, ‘.tac’)

• rb ('.rb’, ‘.rbw’, ‘Rakefile’, ‘.rake’, ‘.gemspec’, ‘.rbx’, ‘.duby’)

• rconsole ('*.Rout’)

• rebol ('.r’, ‘.r3’)

• redcode ('*.cw’)

• rhtml ('*.rhtml’)

• rst ('.rst’, ‘.rest’)

• sass ('*.sass’)

• scala ('*.scala’)

• scaml ('*.scaml’)

• scheme ('*.scm’)

• scss ('*.scss’)

• smalltalk ('*.st’)

• smarty ('*.tpl’)

• sourceslist (‘sources.list’)

• splus ('.S’, ‘.R’)

• sql ('*.sql’)

• sqlite3 ('*.sqlite3-console’)

• squidconf (‘squid.conf’)

• ssp ('*.ssp’)

• tcl ('*.tcl’)

• tcsh ('.tcsh’, ‘.csh’)

• tex ('.tex’, ‘.aux’, ‘*.toc’)

• text ('*.txt’)

• v ('.v’, ‘.sv’)

• vala ('.vala’, ‘.vapi’)

• vbnet ('.vb’, ‘.bas’)

• velocity ('.vm’, ‘.fhtml’)

• vim ('*.vim’, ‘.vimrc’)

• xml ('.xml’, ‘.xsl’, ‘.rss’, ‘.xslt’, ‘.xsd’, ‘.wsdl’)

• xquery ('.xqy’, ‘.xquery’)

• xslt ('.xsl’, ‘.xslt’)

• yaml ('.yaml’, ‘.yml’)