dotar/vim/settings/neocomplete.vim

let g:acp_enableAtStartup = 0                             " Disable AutoComplPop.
let g:neocomplete#enable_at_startup = 1                   " Use neocomplete.
let g:neocomplete#enable_camel_case = 1
let g:neocomplete#enable_smart_case = 1

" Default # of completions is 100, that's crazy.
let g:neocomplete#max_list = 5

let g:neocomplete#auto_completion_start_length = 3        " Set minimum syntax keyword length.
let g:neocomplete#lock_buffer_name_pattern = '\*ku\*'

let g:neocomplete#enable_auto_select = 1                  " AutoComplPop like behavior.

" Map standard Ctrl-N completion to Ctrl-Space
inoremap <C-Space> <C-n>
" Plugin key-mappings.
inoremap <expr><C-g>     neocomplete#undo_completion()

" This makes sure we use neocomplete completefunc instead of
" the one in rails.vim, otherwise this plugin will crap out.
let g:neocomplete#force_overwrite_completefunc = 1

" Define keyword.
if !exists('g:neocomplete#keyword_patterns')
  let g:neocomplete#keyword_patterns = {}
endif
let g:neocomplete#keyword_patterns['default'] = '\h\w*'

" Enable heavy omni completion.
"if !exists('g:neocomplete#sources#omni#input_patterns')
"  let g:neocomplete#sources#omni#input_patterns = {}
"endif
"let g:neocomplete#force_omni_input_patterns.go = '[^.[:digit:] *\t]\.'
if !exists('g:neocomplete#force_omni_input_patterns')
  let g:neocomplete#force_omni_input_patterns = {}
endif
let g:neocomplete#force_omni_input_patterns.go = '[^.[:digit:] *\t]\.'

"let g:neocomplete#sources#omni#input_patterns.php = '[^. \t]->\h\w*\|\h\w*::'
"let g:neocomplete#sources#omni#input_patterns.c = '[^.[:digit:] *\t]\%(\.\|->\)'
"let g:neocomplete#sources#omni#input_patterns.cpp = '[^.[:digit:] *\t]\%(\.\|->\)\|\h\w*::'

" Enable omni completion.
autocmd FileType css setlocal omnifunc=csscomplete#CompleteCSS
autocmd FileType html,markdown setlocal omnifunc=htmlcomplete#CompleteTags
autocmd FileType javascript setlocal omnifunc=javascriptcomplete#CompleteJS
autocmd FileType python setlocal omnifunc=pythoncomplete#Complete
autocmd FileType xml setlocal omnifunc=xmlcomplete#CompleteTags
autocmd FileType ruby setlocal omnifunc=rubycomplete#Complete

" Recommended key-mappings.
" <CR>: close popup and save indent.
imap <expr><silent> <CR> <SID>my_cr_function()
function! s:my_cr_function()
  return pumvisible() ? neocomplcache#close_popup() . "\<CR>" : "\<CR>"
endfunction

" <TAB>: completion.
inoremap <expr><TAB>  pumvisible() ? "\<C-n>" : "\<TAB>"
inoremap <expr><C-y>  neocomplete#close_popup()
inoremap <expr><C-e>  neocomplete#cancel_popup()
" Close popup by <Space>.
"inoremap <expr><Space> pumvisible() ? neocomplete#close_popup() : "\<Space>"