In moving much of my development over to OS X, I started receiving errors when trying to use vim’s omnicompletion in Rails projects. An excerpt from my vim config to enable that functionality looks like this:
" Turn on language specific omnifuncs autocmd FileType ruby,eruby set omnifunc=rubycomplete#Complete autocmd FileType ruby,eruby let g:rubycomplete_buffer_loading = 1 autocmd FileType ruby,eruby let g:rubycomplete_rails = 1 autocmd FileType ruby,eruby let g:rubycomplete_classes_in_global = 1 autocmd FileType ruby,eruby let g:rubycomplete_include_object = 1 autocmd FileType ruby,eruby let g:rubycomplete_include_objectspace = 1
When I tried to auto-complete something(Ctrl^X^O), I would receive the following error:
"-- Omni completion (^O^N^P) -- Searching...Rails requires RubyGems >= 1.3.5 (you have 1.0.1). Please `gem update --system` and try again. Error loading rails environment"Long story short, I was using MacPort’s ruby/gem packages, but a binary snapshot of MacVim that I downloaded off their website was using the libraries that come with OSX. There is not really a clean workaround for that, but luckily it turns out macport’s macvim builds the latest snapshot. So all you need to is to install macvim with ruby support:
sudo port install macvim +ruby
And you will get nice auto-completion:
