vim omnicomplete with ruby only partially works

Question

I have a +ruby version of vim 7.2 (also tried with 7.3 and custom compiled version) but I am only getting the omnicomplete (ctrl-x ctrl-o) to work in certain instances.

For example, if I have

class MegaGreeter
    attr_accessor :names

    def initialize(names = "world")
        @names = names
        if @names.nil?
            puts "hello #{@names}.each"
        end
    end
end

omnicomplete works for .each, but not for .nil. Also, it won't auto complete any attr_ keywords.

I have tried it with all my plugins disabled, again with all of them enabled. I have tried it also with the vim-ruby plugin. The plugins I have installed are AfterColors, CSApprox, surround, color_sample_pack, mimicpak, taglist.

I have the following section in my .vimrc (I can post entire .vimrc if needed). I also use VIM for C++, JavaScript, and about a 1/2 dozen other languages, so there is omnicomplete stuff in there for some of them too:

" ============================ "
"   CTAGS / OMNICOMPLETE
" ============================ "

" map <ctrl>+F12 to generate ctags for current folder:
map <C-F12> :!ctags -R --c++-kinds=+p --fields=+iaS --extra=+q .<CR><CR>
" add current directory's generated tags file to available tags
set tags+=./projects/.tags
" toggle list view
map <F4> :TlistToggle<cr> 
" auto close omnicomplete options when exiting insert mode
autocmd InsertLeave * if pumvisible() == 0|pclose|endif
" configs for cpp
let OmniCpp_MayCompleteDot = 1 " autocomplete with .
let OmniCpp_MayCompleteArrow = 1 " autocomplete with ->
let OmniCpp_MayCompleteScope = 1 " autocomplete with ::
let OmniCpp_SelectFirstItem = 2 " select first item (but don't insert)
let OmniCpp_NamespaceSearch = 2 " search namespaces in this and included files
let OmniCpp_ShowPrototypeInAbbr = 1 " show function prototype (i.e. parameters) in popup window

if has("win32")
    let Tlist_Ctags_Cmd='c:\programs\ctags\ctags58\ctags.exe'
else
    if has("win32unix")
    let Tlist_Ctags_Cmd='/usr/bin/ctags.exe'
    else
    if has("unix")
        let Tlist_Ctags_Cmd='/usr/bin/ctags'
    endif
    endif
endif

" omnicomplete settings for the popout menu
setlocal omnifunc=syntaxcomplete#Complete
" makes list show longest matching item at top of list
set completeopt=menuone,longest
" makes enter select item
inoremap <expr> <CR>    pumvisible() ? "\<C-y>" : "\<CR>"
inoremap <expr> <Space> pumvisible() ? "\<C-y>" : "\<Space>"
inoremap <expr> <.> pumvisible() ? "\<C-y>" : "\<.>"
inoremap <expr> <S-CR>  pumvisible() ? "\<C-n>\<C-y>" : ""
"manual up/down with tab & shift+tab
inoremap <expr> <Tab>   pumvisible() ? "\<C-n>" : "\<Tab>"
inoremap <expr> <S-Tab> pumvisible() ? "\<C-p>" : ""
"allows for autoselect of first item in user complete list
inoremap <expr> <C-n> pumvisible() ? '<C-n>' : '<C-n><C-r>=pumvisible() ? "\<lt>Down>" : ""<CR>'
"allows autoselect of first item for omni complete
inoremap <expr> <leader>' pumvisible() ? '<C-n>' : '<C-x><C-o><C-n><C-p><C-r>=pumvisible() ? "\<lt>Down>" : ""<CR>'
" open omni completion menu closing previous if open and opening new menu without changing the text
inoremap <expr> <C-Space> (pumvisible() ? (col('.') > 1 ? '<Esc>i<Right>' : '<Esc>i') : '') .
            \ '<C-x><C-o><C-r>=pumvisible() ? "\<lt>C-n>\<lt>C-p>\<lt>Down>" : ""<CR>'
" open user completion menu closing previous if open and opening new menu without changing the text
inoremap <expr> <S-Space> (pumvisible() ? (col('.') > 1 ? '<Esc>i<Right>' : '<Esc>i') : '') .
            \ '<C-x><C-n><C-r>=pumvisible() ? "\<lt>C-n>\<lt>C-p>\<lt>Down>" : ""<CR>'

" autocomplete for commands; and put most likely at top using tab complete
" (like windows cmd)
set wildmenu
set wildmode=list:longest

" for ruby 
if has("autocmd")
    filetype indent on
    autocmd FileType cucumber,rspec,ruby set number
    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_include_object = 1
    autocmd FileType ruby,eruby let g:rubycomplete_include_objectspace = 1
    autocmd FileType ruby,eruby let g:rubycomplete_classes_in_global = 1
else
    set autoindent
endif

" ruby requires bash --login; 
" This is to correct running cmd from vim via :!
if has("unix")
    set shell=/bin/bash\ -il
endif

"ruby end

So, is there a way I can get full support for Ruby in omnicomplete, if so how? Or, is this the most that omnicomplete has to offer for Ruby?

Answer 1

Vim auto-completion should work out of the box, I am not aware of any method .nil so I wouldn't be sure if that's a real issue.

However with regards to the omnicompletion not completing attr_reader and the likes, the setlocal omnifunc=syntaxcomplete#Complete fixes it, however it should go in a ftplugin/ruby/my_custom_ruby_ftplugin.vim instead of just in your vimrc, or alternatively if you like you could put that setl command within a autocmd FileType ruby setl omnifunc=syntaxcompelete#Complete in your vimrc and it should then work like you expect.