gistfile1.txt

let b:inited=0
autocmd InsertEnter * call s:init_clang_complete()
function! s:init_clang_complete()
	if( &filetype == 'c'    || &filetype == 'cpp'
	\|| &filetype == 'objc' || &filetype == 'objcpp' )
		if &cp || (exists('g:inited') && g:inited)
			return
		endif
		let b:inited=1
		if( &completefunc=='ClangComplete' )
			setlocal completefunc=
		endif
		call <SID>ClangCompleteInit()
	endif
endfunction

" clang_complete 側からコピペ
function! s:ClangCompleteInit()
  inoremap <expr> <buffer> <C-X><C-O> <SID>LaunchCompletion()
  inoremap <expr> <buffer> . <SID>CompleteDot()
  inoremap <expr> <buffer> > <SID>CompleteArrow()
  inoremap <expr> <buffer> : <SID>CompleteColon()
endfunction

function! s:ShouldComplete()
  if (getline('.') =~ '#\s*\(include\|import\)')
    return 0
  else
    if col('.') == 1
      return 1
    endif
    for l:id in synstack(line('.'), col('.') - 1)
      if match(synIDattr(l:id, 'name'), '\CComment\|String\|Number')
            \ != -1
        return 0
      endif
    endfor
    return 1
  endif
endfunction

function! s:LaunchCompletion()
  let l:result = ""
  if s:ShouldComplete()
    if match(&completeopt, 'longest') != -1
      " 呼び出しを <C-x><C-u> → <C-x><C-o> に変更
      let l:result = "\<C-X>\<C-O>"
    else
      let l:result = "\<C-X>\<C-O>\<C-P>"
    endif
    if g:clang_auto_select == 1
      let l:result .= "\<C-R>=(pumvisible() ? \"\\<Down>\" : '')\<CR>"
    endif
  endif
  return l:result
endfunction

function! s:CompleteDot()
  if g:clang_complete_auto == 1
    return '.' . s:LaunchCompletion()
  endif
  return '.'
endfunction

function! s:CompleteArrow()
  if g:clang_complete_auto != 1 || getline('.')[col('.') - 2] != '-'
    return '>'
  endif
  return '>' . s:LaunchCompletion()
endfunction

function! s:CompleteColon()
  if g:clang_complete_auto != 1 || getline('.')[col('.') - 2] != ':'
    return ':'
  endif
  return ':' . s:LaunchCompletion()
endfunction