Arduino syntax highlighting

I am trying to make highlight & ranger work with arduino sketches. I have tried to copy c.lang in /usr/share/highlight/langdefs/ to ino.lang. Also tried to add on "ino" to { Lang="c", Extensions={"c++", "cpp", "cxx", "cc", "h", "hh", "hxx", "hpp", "cu", "inl", "ipp", "ino"} }, in /usr/share/highlight/filetypes.conf. But neither worked.