au BufNewFile,BufRead *.scheme set filetype=scheme
au BufNewFile,BufRead *.sig set filetype=sml
au BufNewFile,BufRead *.cabal set filetype=cabal
au BufNewFile,BufRead *.scheme set filetype=scheme
au BufNewFile,BufRead *.sig set filetype=sml
au BufNewFile,BufRead *.cabal set filetype=cabal