ref: 64462bb36f34be7ab4aa1fcf7195739eb617a044
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