After literally days of tweaking, I think I got vim's autocomplete (omnicomplete + Acp plugin) to work acceptably. But the annoying thing is that it is still enabled for plain text files so I would have to type :DisableAcp for README or plain text files. How do I add logic to my vimrc so that if it detects an empty filetype it disables the Acp on startup? here is what I wrote: if &filetype == "" let g:acp_enableStartup = 0 endif but this disables Acp on start up for all files.