neocomplete

neocomplete is the abbreviation of "neo-completion with cache". It provides keyword completion system by maintaining a cache of keywords in the current buffer. neocomplete can be customized easily and has many more features than Vim's built-in completion.

Note: If you use neovim, you should use deoplete instead. https://github.com/Shougo/deoplete.nvim

Installation

Note: neocomplete requires Vim 7.3.885+ with Lua enabled. See requirements if you aren't sure whether you have this.

Extract the files and put them in your Vim directory (usually ~/.vim/ or Program Files/Vim/vimfiles on Windows).
Execute the :NeoCompleteEnable command or set let g:neocomplete#enable_at_startup = 1 in your .vimrc (not in .gvimrc or _gvimrc!)

Requirements

neocomplete requires Vim 7.3.885+ compiled with if_lua. If :echo has("lua") returns 1, then you're done; otherwise, see below.

Vim builds for Windows

Note: the Vim build may not include the Lua DLL. In that case, download Lua and put the lua52.dll file in the same directory as gvim.exe.

Vim for Mac OS X:

MacVim with if\_lua

Or, you can install MacVim with homebrew:

brew install macvim --with-cscope --with-lua
brew linkapps macvim

To install Vim (as opposed to MacVim) with homebrew:

brew install vim --with-lua

Vim for Linux:

Debian (or Ubuntu)

Make sure you have any of these packages:

vim-nox
vim-gtk
vim-gnome
vim-athena

Which package depends on your graphical environment (except vim-nox which is for vim with no GUI).

Fedora

The latest version of vim includes lua. As of 2014-04-16 you need to download the rpm.

Misc

Be aware, your distribution's package manager may have a fairly outdated Vim build (for example, Ubuntu 12.04 ships Vim 7.3.429). However, building Vim on Linux is not difficult. Remember to specify --with-lua (or --with-features=huge).

Vim for Cygwin:

In a cygwin environment, the Lua interface is supported by default.

If you want to make manually, you also need gcc and make.

When everything is prepared, execute these commands.

cd /usr/src
tar jxf vim-7.4.tar.bz2
tar xvfz lua-5.1.5.tar.gz
cd vim74/
./configure --enable-luainterp --enable-gui=no \
--without-x --enable-multibyte --prefix=/usr
make && make install

To check if everything was successfull enter the following vim --version. You should see +lua in the list of features.

Snippets

The Snippets feature of neocomplete was split into a separate plugin.

A migration guide for existing users of neocomplcache is available: Migration guide

Screenshots

Original filename completion

Omni completion

Completion with vimshell

Vim completion

Configuration Examples

"Note: This option must be set in .vimrc(_vimrc).  NOT IN .gvimrc(_gvimrc)!
" Disable AutoComplPop.
let g:acp_enableAtStartup = 0
" Use neocomplete.
let g:neocomplete#enable_at_startup = 1
" Use smartcase.
let g:neocomplete#enable_smart_case = 1
" Set minimum syntax keyword length.
let g:neocomplete#sources#syntax#min_keyword_length = 3
let g:neocomplete#lock_buffer_name_pattern = '\*ku\*'

" Define dictionary.
let g:neocomplete#sources#dictionary#dictionaries = {
    \ 'default' : '',
    \ 'vimshell' : $HOME.'/.vimshell_hist',
    \ 'scheme' : $HOME.'/.gosh_completions'
        \ }

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

" Plugin key-mappings.
inoremap <expr><C-g>     neocomplete#undo_completion()
inoremap <expr><C-l>     neocomplete#complete_common_string()

" Recommended key-mappings.
" <CR>: close popup and save indent.
inoremap <silent> <CR> <C-r>=<SID>my_cr_function()<CR>
function! s:my_cr_function()
  return (pumvisible() ? "\<C-y>" : "" ) . "\<CR>"
  " For no inserting <CR> key.
  "return pumvisible() ? "\<C-y>" : "\<CR>"
endfunction
" <TAB>: completion.
inoremap <expr><TAB>  pumvisible() ? "\<C-n>" : "\<TAB>"
" <C-h>, <BS>: close popup and delete backword char.
inoremap <expr><C-h> neocomplete#smart_close_popup()."\<C-h>"
inoremap <expr><BS> neocomplete#smart_close_popup()."\<C-h>"
" Close popup by <Space>.
"inoremap <expr><Space> pumvisible() ? "\<C-y>" : "\<Space>"

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

" Shell like behavior(not recommended).
"set completeopt+=longest
"let g:neocomplete#enable_auto_select = 1
"let g:neocomplete#disable_auto_complete = 1
"inoremap <expr><TAB>  pumvisible() ? "\<Down>" : "\<C-x>\<C-u>"

" 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

" Enable heavy omni completion.
if !exists('g:neocomplete#sources#omni#input_patterns')
  let g:neocomplete#sources#omni#input_patterns = {}
endif
"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*::'

" For perlomni.vim setting.
" https://github.com/c9s/perlomni.vim
let g:neocomplete#sources#omni#input_patterns.perl = '\h\w*->\h\w*\|\h\w*::'

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