ref: da67a46215a8c4f16e958e86354c7514132abc92
dir: /support/vim/ftdetect/mbld.vim/
au BufRead,BufNewFile bld.proj
            \ setlocal ft=mbld |
            \ setlocal noet |
            \ setlocal sw=8
au BufRead,BufNewFile bld.sub
            \ setlocal ft=mbld |
            \ setlocal noet |
            \ setlocal sw=8