ultimate-vim/sources_non_forked/vim-fugitive/autoload/fugitive.vim

" Location:     autoload/fugitive.vim
" Maintainer:   Tim Pope <http://tpo.pe/>

if exists('g:autoloaded_fugitive')
  finish
endif
let g:autoloaded_fugitive = 1

if !exists('g:fugitive_git_executable')
  let g:fugitive_git_executable = 'git'
elseif g:fugitive_git_executable =~# '^\w\+='
  let g:fugitive_git_executable = 'env ' . g:fugitive_git_executable
endif

" Section: Utility

function! s:function(name) abort
  return function(substitute(a:name,'^s:',matchstr(expand('<sfile>'), '.*\zs<SNR>\d\+_'),''))
endfunction

function! s:sub(str,pat,rep) abort
  return substitute(a:str,'\v\C'.a:pat,a:rep,'')
endfunction

function! s:gsub(str,pat,rep) abort
  return substitute(a:str,'\v\C'.a:pat,a:rep,'g')
endfunction

function! s:Uniq(list) abort
  let i = 0
  let seen = {}
  while i < len(a:list)
    let str = string(a:list[i])
    if has_key(seen, str)
      call remove(a:list, i)
    else
      let seen[str] = 1
      let i += 1
    endif
  endwhile
  return a:list
endfunction

function! s:winshell() abort
  return has('win32') && &shellcmdflag =~# '^/\|^-Command$'
endfunction

function! s:shellesc(arg) abort
  if type(a:arg) == type([])
    return join(map(copy(a:arg), 's:shellesc(v:val)'))
  elseif a:arg =~ '^[A-Za-z0-9_/:.-]\+$'
    return a:arg
  elseif s:winshell()
    return '"'.s:gsub(s:gsub(a:arg, '"', '""'), '\%', '"%"').'"'
  else
    return shellescape(a:arg)
  endif
endfunction

let s:fnameescape = " \t\n*?[{`$\\%#'\"|!<"
function! s:fnameescape(file) abort
  if type(a:file) == type([])
    return join(map(copy(a:file), 's:fnameescape(v:val)'))
  elseif exists('*fnameescape')
    return fnameescape(a:file)
  else
    return escape(a:file, s:fnameescape)
  endif
endfunction

function! s:throw(string) abort
  throw 'fugitive: '.a:string
endfunction

function! s:DirCheck(...) abort
  if !empty(a:0 ? s:Dir(a:1) : s:Dir())
    return ''
  elseif empty(bufname(''))
    return 'return ' . string('echoerr "fugitive: working directory does not belong to a Git repository"')
  else
    return 'return ' . string('echoerr "fugitive: file does not belong to a Git repository"')
  endif
endfunction

function! s:Mods(mods, ...) abort
  let mods = substitute(a:mods, '\C<mods>', '', '')
  let mods = mods =~# '\S$' ? mods . ' ' : mods
  if a:0 && mods !~# '\<\%(aboveleft\|belowright\|leftabove\|rightbelow\|topleft\|botright\|tab\)\>'
    let mods = a:1 . ' ' . mods
  endif
  return substitute(mods, '\s\+', ' ', 'g')
endfunction

function! s:Slash(path) abort
  if exists('+shellslash')
    return tr(a:path, '\', '/')
  else
    return a:path
  endif
endfunction

function! s:Resolve(path) abort
  let path = resolve(a:path)
  if has('win32')
    let path = FugitiveVimPath(fnamemodify(fnamemodify(path, ':h'), ':p') . fnamemodify(path, ':t'))
  endif
  return path
endfunction

function! s:cpath(path, ...) abort
  if exists('+fileignorecase') && &fileignorecase
    let path = FugitiveVimPath(tolower(a:path))
  else
    let path = FugitiveVimPath(a:path)
  endif
  return a:0 ? path ==# s:cpath(a:1) : path
endfunction

function! s:Cd(...) abort
  let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd' : exists(':tcd') && haslocaldir(-1) ? 'tcd' : 'cd'
  if !a:0
    return cd
  endif
  let cwd = getcwd()
  if s:cpath(cwd, a:1)
    return ''
  endif
  exe cd s:fnameescape(a:1)
  return cd . ' ' . s:fnameescape(cwd)
endfunction

let s:executables = {}

function! s:executable(binary) abort
  if !has_key(s:executables, a:binary)
    let s:executables[a:binary] = executable(a:binary)
  endif
  return s:executables[a:binary]
endfunction

function! s:DoAutocmd(cmd) abort
  if v:version >= 704 || (v:version == 703 && has('patch442'))
    return 'doautocmd <nomodeline>' . a:cmd
  elseif &modelines > 0
    return 'try|set modelines=0|doautocmd ' . a:cmd . '|finally|set modelines=' . &modelines . '|endtry'
  else
    return 'doautocmd ' . a:cmd
  endif
endfunction

let s:nowait = v:version >= 704 ? '<nowait>' : ''

function! s:Map(mode, lhs, rhs, ...) abort
  for mode in split(a:mode, '\zs')
    let flags = (a:0 ? a:1 : '') . (a:rhs =~# '<Plug>' ? '' : '<script>')
    let head = a:lhs
    let tail = ''
    let keys = get(g:, mode.'remap', {})
    if type(keys) == type([])
      return
    endif
    while !empty(head)
      if has_key(keys, head)
        let head = keys[head]
        if empty(head)
          return
        endif
        break
      endif
      let tail = matchstr(head, '<[^<>]*>$\|.$') . tail
      let head = substitute(head, '<[^<>]*>$\|.$', '', '')
    endwhile
    if flags !~# '<unique>' || empty(mapcheck(head.tail, mode))
      exe mode.'map <buffer>' s:nowait flags head.tail a:rhs
      if a:0 > 1
        let b:undo_ftplugin = get(b:, 'undo_ftplugin', 'exe') .
              \ '|sil! exe "' . mode . 'unmap <buffer> ' . head.tail . '"'
      endif
    endif
  endfor
endfunction

" Section: Quickfix

function! s:QuickfixGet(nr, ...) abort
  if a:nr < 0
    return call('getqflist', a:000)
  else
    return call('getloclist', [a:nr] + a:000)
  endif
endfunction

function! s:QuickfixSet(nr, ...) abort
  if a:nr < 0
    return call('setqflist', a:000)
  else
    return call('setloclist', [a:nr] + a:000)
  endif
endfunction

function! s:QuickfixCreate(nr, opts) abort
  if has('patch-7.4.2200')
    call s:QuickfixSet(a:nr, [], ' ', a:opts)
  else
    call s:QuickfixSet(a:nr, [], ' ')
  endif
endfunction

function! s:QuickfixStream(nr, title, cmd, first, callback, ...) abort
  call s:QuickfixCreate(a:nr, {'title': a:title})
  let winnr = winnr()
  exe a:nr < 0 ? 'copen' : 'lopen'
  if winnr != winnr()
    wincmd p
  endif

  let buffer = []
  let lines = split(s:SystemError(s:shellesc(a:cmd))[0], "\n")
  for line in lines
    call extend(buffer, call(a:callback, a:000 + [line]))
    if len(buffer) >= 20
      call s:QuickfixSet(a:nr, remove(buffer, 0, -1), 'a')
      redraw
    endif
  endfor
  call s:QuickfixSet(a:nr, extend(buffer, call(a:callback, a:000 + [0])), 'a')

  if a:first && len(s:QuickfixGet(a:nr))
    call s:BlurStatus()
    return a:nr < 0 ? 'cfirst' : 'lfirst'
  else
    return 'exe'
  endif
endfunction

" Section: Git

function! s:UserCommandList(...) abort
  let git = split(get(g:, 'fugitive_git_command', g:fugitive_git_executable), '\s\+')
  let dir = a:0 ? s:Dir(a:1) : ''
  if len(dir)
    let tree = s:Tree(dir)
    if empty(tree)
      call add(git, '--git-dir=' . FugitiveGitPath(dir))
    elseif len(tree) && s:cpath(tree) !=# s:cpath(getcwd())
      if fugitive#GitVersion(1, 8, 5)
        call extend(git, ['-C', FugitiveGitPath(tree)])
      else
        throw 'fugitive: Git 1.8.5 or higher required to change directory'
      endif
    endif
  endif
  return git
endfunction

function! s:UserCommand(...) abort
  return s:shellesc(call('s:UserCommandList', a:0 ? [a:1] : []) + (a:0 ? a:2 : []))
endfunction

let s:git_versions = {}
function! fugitive#GitVersion(...) abort
  if !has_key(s:git_versions, g:fugitive_git_executable)
    let s:git_versions[g:fugitive_git_executable] = matchstr(system(g:fugitive_git_executable.' --version'), '\d[^[:space:]]\+')
  endif
  if !a:0
    return s:git_versions[g:fugitive_git_executable]
  endif
  let components = split(s:git_versions[g:fugitive_git_executable], '\D\+')
  if empty(components)
    return -1
  endif
  for i in range(len(a:000))
    if a:000[i] > +get(components, i)
      return 0
    elseif a:000[i] < +get(components, i)
      return 1
    endif
  endfor
  return a:000[i] ==# get(components, i)
endfunction

let s:commondirs = {}
function! fugitive#CommonDir(dir) abort
  if empty(a:dir)
    return ''
  endif
  if !has_key(s:commondirs, a:dir)
    if getfsize(a:dir . '/HEAD') < 10
      let s:commondirs[a:dir] = ''
    elseif filereadable(a:dir . '/commondir')
      let cdir = get(readfile(a:dir . '/commondir', 1), 0, '')
      if cdir =~# '^/\|^\a:/'
        let s:commondirs[a:dir] = s:Slash(FugitiveVimPath(cdir))
      else
        let s:commondirs[a:dir] = simplify(a:dir . '/' . cdir)
      endif
    else
      let s:commondirs[a:dir] = a:dir
    endif
  endif
  return s:commondirs[a:dir]
endfunction

function! s:Dir(...) abort
  return a:0 ? FugitiveGitDir(a:1) : FugitiveGitDir()
endfunction

function! s:Tree(...) abort
  return a:0 ? FugitiveWorkTree(a:1) : FugitiveWorkTree()
endfunction

function! s:HasOpt(args, ...) abort
  let args = a:args[0 : index(a:args, '--')]
  let opts = copy(a:000)
  if type(opts[0]) == type([])
    if empty(args) || index(opts[0], args[0]) == -1
      return 0
    endif
    call remove(opts, 0)
  endif
  for opt in opts
    if index(args, opt) != -1
      return 1
    endif
  endfor
endfunction

function! s:PreparePathArgs(cmd, dir, literal) abort
  let literal_supported = fugitive#GitVersion(1, 9)
  if a:literal && literal_supported
    call insert(a:cmd, '--literal-pathspecs')
  endif
  let split = index(a:cmd, '--')
  for i in range(split < 0 ? len(a:cmd) : split)
    if type(a:cmd[i]) == type(0)
      let a:cmd[i] = fugitive#Path(bufname(a:cmd[i]), './', a:dir)
    endif
  endfor
  if split < 0
    return a:cmd
  endif
  for i in range(split + 1, len(a:cmd) - 1)
    if type(a:cmd[i]) == type(0)
      let a:cmd[i] = fugitive#Path(bufname(a:cmd[i]), './', a:dir)
    elseif a:literal
      let a:cmd[i] = fugitive#Path(a:cmd[i], './', a:dir)
    elseif !literal_supported
      let a:cmd[i] = substitute(a:cmd[i], '^:\%(/\|([^)]*)\)\=:\=', './', '')
    endif
  endfor
  return a:cmd
endfunction

let s:prepare_env = {
      \ 'sequence.editor': 'GIT_SEQUENCE_EDITOR',
      \ 'core.editor': 'GIT_EDITOR',
      \ 'core.askpass': 'GIT_ASKPASS',
      \ }
function! fugitive#PrepareDirEnvArgv(...) abort
  if a:0 && type(a:1) ==# type([])
    let cmd = a:000[1:-1] + a:1
  else
    let cmd = copy(a:000)
  endif
  let env = {}
  let i = 0
  while i < len(cmd)
    if cmd[i] =~# '^$\|[\/.]' && cmd[i] !~# '^-'
      let dir = remove(cmd, 0)
    elseif cmd[i] =~# '^--git-dir='
      let dir = remove(cmd, 0)[10:-1]
    elseif type(cmd[i]) ==# type(0)
      let dir = s:Dir(remove(cmd, i))
    elseif cmd[i] ==# '-c' && len(cmd) > i + 1
      let key = matchstr(cmd[i+1], '^[^=]*')
      if has_key(s:prepare_env, tolower(key)) || key !~# '\.'
        let var = get(s:prepare_env, tolower(key), key)
        let val = matchstr(cmd[i+1], '=\zs.*')
        let env[var] = val
      endif
      if fugitive#GitVersion(1, 8) && cmd[i+1] =~# '\.'
        let i += 2
      else
        call remove(cmd, i, i + 1)
      endif
    elseif cmd[i] =~# '^--.*pathspecs$'
      let explicit_pathspec_option = 1
      if fugitive#GitVersion(1, 9)
        let i += 1
      else
        call remove(cmd, i)
      endif
    elseif cmd[i] !~# '^-'
      break
    else
      let i += 1
    endif
  endwhile
  if !exists('dir')
    let dir = s:Dir()
  endif
  call s:PreparePathArgs(cmd, dir, !exists('explicit_pathspec_option'))
  return [dir, env, cmd]
endfunction

function! s:BuildShell(dir, env, args) abort
  let cmd = copy(a:args)
  let tree = s:Tree(a:dir)
  let pre = ''
  for [var, val] in items(a:env)
    if s:winshell()
      let pre .= 'set ' . var . '=' . s:shellesc(val) . '& '
    else
      let pre = (len(pre) ? pre : 'env ') . var . '=' . s:shellesc(val) . ' '
    endif
  endfor
  if empty(tree) || index(cmd, '--') == len(cmd) - 1
    call insert(cmd, '--git-dir=' . FugitiveGitPath(a:dir))
  elseif fugitive#GitVersion(1, 8, 5)
    call extend(cmd, ['-C', FugitiveGitPath(tree)], 'keep')
  else
    let pre = 'cd ' . s:shellesc(tree) . (s:winshell() ? '& ' : '; ') . pre
  endif
  return pre . g:fugitive_git_executable . ' ' . join(map(cmd, 's:shellesc(v:val)'))
endfunction

function! fugitive#Prepare(...) abort
  let [dir, env, argv] = call('fugitive#PrepareDirEnvArgv', a:000)
  return s:BuildShell(dir, env, argv)
endfunction

function! s:SystemError(cmd, ...) abort
  try
    if &shellredir ==# '>' && &shell =~# 'sh\|cmd'
      let shellredir = &shellredir
      if &shell =~# 'csh'
        set shellredir=>&
      else
        set shellredir=>%s\ 2>&1
      endif
    endif
    let out = call('system', [type(a:cmd) ==# type([]) ? fugitive#Prepare(a:cmd) : a:cmd] + a:000)
    return [out, v:shell_error]
  catch /^Vim\%((\a\+)\)\=:E484:/
    let opts = ['shell', 'shellcmdflag', 'shellredir', 'shellquote', 'shellxquote', 'shellxescape', 'shellslash']
    call filter(opts, 'exists("+".v:val) && !empty(eval("&".v:val))')
    call map(opts, 'v:val."=".eval("&".v:val)')
    call s:throw('failed to run `' . a:cmd . '` with ' . join(opts, ' '))
  finally
    if exists('shellredir')
      let &shellredir = shellredir
    endif
  endtry
endfunction

function! s:ChompError(...) abort
  let [out, exec_error] = s:SystemError(call('fugitive#Prepare', a:000))
  return [s:sub(out, '\n$', ''), exec_error]
endfunction

function! s:ChompDefault(default, ...) abort
  let [out, exec_error] = call('s:ChompError', a:000)
  return exec_error ? a:default : out
endfunction

function! s:LinesError(...) abort
  let [out, exec_error] = call('s:ChompError', a:000)
  return [len(out) && !exec_error ? split(out, "\n", 1) : [], exec_error]
endfunction

function! s:NullError(...) abort
  let [out, exec_error] = s:SystemError(call('fugitive#Prepare', a:000))
  return [exec_error ? [] : split(out, "\1"), exec_error ? substitute(out, "\n$", "", "") : '', exec_error]
endfunction

function! s:TreeChomp(...) abort
  let cmd = call('fugitive#Prepare', a:000)
  let [out, exec_error] = s:SystemError(cmd)
  let out = s:sub(out, '\n$', '')
  if !exec_error
    return out
  endif
  throw 'fugitive: error running `' . cmd . '`: ' . out
endfunction

function! s:EchoExec(...) abort
  echo call('s:ChompError', a:000)[0]
  call fugitive#ReloadStatus(-1, 1)
  return 'checktime'
endfunction

let s:head_cache = {}

function! fugitive#Head(...) abort
  let dir = a:0 > 1 ? a:2 : s:Dir()
  if empty(dir)
    return ''
  endif
  let file = fugitive#Find('.git/HEAD', dir)
  let ftime = getftime(file)
  if ftime == -1
    return ''
  elseif ftime != get(s:head_cache, dir, [-1])[0]
    let s:head_cache[dir] = [ftime, readfile(file)[0]]
  endif
  let head = s:head_cache[dir][1]
  if head =~# '^ref: '
    return substitute(head, '\C^ref: \%(refs/\%(heads/\|remotes/\|tags/\)\=\)\=', '', '')
  elseif head =~# '^\x\{40,\}$'
    let len = a:0 ? a:1 : 0
    return len < 0 ? head : len ? head[0:len-1] : ''
  else
    return ''
  endif
endfunction

function! fugitive#RevParse(rev, ...) abort
  let [hash, exec_error] = s:ChompError([a:0 ? a:1 : s:Dir(), 'rev-parse', '--verify', a:rev, '--'])
  if !exec_error && hash =~# '^\x\{40,\}$'
    return hash
  endif
  throw 'fugitive: rev-parse '.a:rev.': '.hash
endfunction

function! s:ConfigTimestamps(dir, dict) abort
  let files = ['/etc/gitconfig', '~/.gitconfig',
        \ len($XDG_CONFIG_HOME) ? $XDG_CONFIG_HOME . '/git/config' : '~/.config/git/config']
  if len(a:dir)
    call add(files, fugitive#Find('.git/config', a:dir))
  endif
  call extend(files, get(a:dict, 'include.path', []))
  return join(map(files, 'getftime(expand(v:val))'), ',')
endfunction

let s:config = {}
function! fugitive#Config(...) abort
  let dir = s:Dir()
  let name = ''
  if a:0 >= 2 && type(a:2) == type({})
    let name = substitute(a:1, '^[^.]\+\|[^.]\+$', '\L&', 'g')
    return len(a:1) ? get(get(a:2, name, []), 0, '') : a:2
  elseif a:0 >= 2
    let dir = a:2
    let name = a:1
  elseif a:0 == 1 && type(a:1) == type({})
    return a:1
  elseif a:0 == 1 && a:1 =~# '^[[:alnum:]-]\+\.'
    let name = a:1
  elseif a:0 == 1
    let dir = a:1
  endif
  let name = substitute(name, '^[^.]\+\|[^.]\+$', '\L&', 'g')
  let key = len(dir) ? dir : '_'
  if has_key(s:config, key) && s:config[key][0] ==# s:ConfigTimestamps(dir, s:config[key][1])
    let dict = s:config[key][1]
  else
    let dict = {}
    let [lines, message, exec_error] = s:NullError([dir, 'config', '--list', '-z'])
    if exec_error
      return {}
    endif
    for line in lines
      let key = matchstr(line, "^[^\n]*")
      if !has_key(dict, key)
        let dict[key] = []
      endif
      call add(dict[key], strpart(line, len(key) + 1))
    endfor
    let s:config[dir] = [s:ConfigTimestamps(dir, dict), dict]
    lockvar! dict
  endif
  return len(name) ? get(get(dict, name, []), 0, '') : dict
endfunction

function! s:Remote(dir) abort
  let head = FugitiveHead(0, a:dir)
  let remote = len(head) ? fugitive#Config('branch.' . head . '.remote') : ''
  let i = 10
  while remote ==# '.' && i > 0
    let head = matchstr(fugitive#Config('branch.' . head . '.merge'), 'refs/heads/\zs.*')
    let remote = len(head) ? fugitive#Config('branch.' . head . '.remote') : ''
    let i -= 1
  endwhile
  return remote =~# '^\.\=$' ? 'origin' : remote
endfunction

function! fugitive#RemoteUrl(...) abort
  let dir = a:0 > 1 ? a:2 : s:Dir()
  let remote = !a:0 || a:1 =~# '^\.\=$' ? s:Remote(dir) : a:1
  if !fugitive#GitVersion(2, 7)
    return fugitive#Config('remote.' . remote . '.url')
  endif
  return s:ChompDefault('', [dir, 'remote', 'get-url', remote, '--'])
endfunction

" Section: Repository Object

function! s:add_methods(namespace, method_names) abort
  for name in a:method_names
    let s:{a:namespace}_prototype[name] = s:function('s:'.a:namespace.'_'.name)
  endfor
endfunction

let s:repo_prototype = {}
let s:repos = {}

function! fugitive#repo(...) abort
  let dir = a:0 ? s:Dir(a:1) : (len(s:Dir()) ? s:Dir() : FugitiveExtractGitDir(expand('%:p')))
  if dir !=# ''
    if has_key(s:repos, dir)
      let repo = get(s:repos, dir)
    else
      let repo = {'git_dir': dir}
      let s:repos[dir] = repo
    endif
    return extend(repo, s:repo_prototype, 'keep')
  endif
  call s:throw('not a Git repository')
endfunction

function! s:repo_dir(...) dict abort
  return join([self.git_dir]+a:000,'/')
endfunction

function! s:repo_tree(...) dict abort
  let dir = s:Tree(self.git_dir)
  if dir ==# ''
    call s:throw('no work tree')
  else
    return join([dir]+a:000,'/')
  endif
endfunction

function! s:repo_bare() dict abort
  if self.dir() =~# '/\.git$'
    return 0
  else
    return s:Tree(self.git_dir) ==# ''
  endif
endfunction

function! s:repo_find(object) dict abort
  return fugitive#Find(a:object, self.git_dir)
endfunction

function! s:repo_translate(rev) dict abort
  return s:Slash(fugitive#Find(substitute(a:rev, '^/', ':(top)', ''), self.git_dir))
endfunction

function! s:repo_head(...) dict abort
  return fugitive#Head(a:0 ? a:1 : 0, self.git_dir)
endfunction

call s:add_methods('repo',['dir','tree','bare','find','translate','head'])

function! s:repo_prepare(...) dict abort
  return call('fugitive#Prepare', [self.git_dir] + a:000)
endfunction

function! s:repo_git_command(...) dict abort
  let git = s:UserCommand() . ' --git-dir='.s:shellesc(self.git_dir)
  return git.join(map(copy(a:000),'" ".s:shellesc(v:val)'),'')
endfunction

function! s:repo_git_chomp(...) dict abort
  let git = g:fugitive_git_executable . ' --git-dir='.s:shellesc(self.git_dir)
  let output = git . join(map(copy(a:000),'" ".s:shellesc(v:val)'),'')
  return s:sub(system(output), '\n$', '')
endfunction

function! s:repo_git_chomp_in_tree(...) dict abort
  let cdback = s:Cd(self.tree())
  try
    return call(self.git_chomp, a:000, self)
  finally
    execute cdback
  endtry
endfunction

function! s:repo_rev_parse(rev) dict abort
  return fugitive#RevParse(a:rev, self.git_dir)
endfunction

call s:add_methods('repo',['prepare','git_command','git_chomp','git_chomp_in_tree','rev_parse'])

function! s:repo_superglob(base) dict abort
  return map(fugitive#CompleteObject(a:base, self.git_dir), 'substitute(v:val, ''\\\(.\)'', ''\1'', "g")')
endfunction

call s:add_methods('repo',['superglob'])

function! s:repo_config(name) dict abort
  return fugitive#Config(a:name, self.git_dir)
endfunction

function! s:repo_user() dict abort
  let username = self.config('user.name')
  let useremail = self.config('user.email')
  return username.' <'.useremail.'>'
endfunction

call s:add_methods('repo',['config', 'user'])

" Section: File API

function! s:DirCommitFile(path) abort
  let vals = matchlist(s:Slash(a:path), '\c^fugitive:\%(//\)\=\(.\{-\}\)\%(//\|::\)\(\x\{40,\}\|[0-3]\)\(/.*\)\=$')
  if empty(vals)
    return ['', '', '']
  endif
  return vals[1:3]
endfunction

function! s:DirRev(url) abort
  let [dir, commit, file] = s:DirCommitFile(a:url)
  return [dir, (commit =~# '^.$' ? ':' : '') . commit . substitute(file, '^/', ':', '')]
endfunction

let s:merge_heads = ['MERGE_HEAD', 'REBASE_HEAD', 'CHERRY_PICK_HEAD', 'REVERT_HEAD']
function! s:MergeHead(...) abort
  let dir = fugitive#Find('.git/', a:0 ? a:1 : s:Dir())
  for head in s:merge_heads
    if filereadable(dir . head)
      return head
    endif
  endfor
  return ''
endfunction

function! s:Owner(path, ...) abort
  let dir = a:0 ? a:1 : s:Dir()
  if empty(dir)
    return ''
  endif
  let actualdir = fugitive#Find('.git/', dir)
  let [pdir, commit, file] = s:DirCommitFile(a:path)
  if s:cpath(dir, pdir)
    if commit =~# '^\x\{40,\}$'
      return commit
    elseif commit ==# '2'
      return 'HEAD^{}'
    elseif commit ==# '0'
      return ''
    endif
    let merge_head = s:MergeHead()
    if empty(merge_head)
      return ''
    endif
    if commit ==# '3'
      return merge_head . '^{}'
    elseif commit ==# '1'
      return s:TreeChomp('merge-base', 'HEAD', merge_head, '--')
    endif
  endif
  let path = fnamemodify(a:path, ':p')
  if s:cpath(actualdir, strpart(path, 0, len(actualdir))) && a:path =~# 'HEAD$'
    return strpart(path, len(actualdir))
  endif
  let refs = fugitive#Find('.git/refs', dir)
  if s:cpath(refs . '/', path[0 : len(refs)]) && path !~# '[\/]$'
    return strpart(path, len(refs) - 4)
  endif
  return ''
endfunction

function! fugitive#Real(url) abort
  if empty(a:url)
    return ''
  endif
  let [dir, commit, file] = s:DirCommitFile(a:url)
  if len(dir)
    let tree = s:Tree(dir)
    return FugitiveVimPath((len(tree) ? tree : dir) . file)
  endif
  let pre = substitute(matchstr(a:url, '^\a\a\+\ze:'), '^.', '\u&', '')
  if len(pre) && pre !=? 'fugitive' && exists('*' . pre . 'Real')
    let url = {pre}Real(a:url)
  else
    let url = fnamemodify(a:url, ':p' . (a:url =~# '[\/]$' ? '' : ':s?[\/]$??'))
  endif
  return FugitiveVimPath(empty(url) ? a:url : url)
endfunction

function! fugitive#Path(url, ...) abort
  if empty(a:url)
    return ''
  endif
  let dir = a:0 > 1 ? a:2 : s:Dir()
  let tree = s:Tree(dir)
  if !a:0
    return fugitive#Real(a:url)
  elseif a:1 =~# '\.$'
    let path = s:Slash(fugitive#Real(a:url))
    let cwd = getcwd()
    let lead = ''
    while s:cpath(tree . '/', (cwd . '/')[0 : len(tree)])
      if s:cpath(cwd . '/', path[0 : len(cwd)])
        if strpart(path, len(cwd) + 1) =~# '^\.git\%(/\|$\)'
          break
        endif
        return a:1[0:-2] . (empty(lead) ? './' : lead) . strpart(path, len(cwd) + 1)
      endif
      let cwd = fnamemodify(cwd, ':h')
      let lead .= '../'
    endwhile
    return a:1[0:-2] . path
  endif
  let url = a:url
  let temp_state = s:TempState(url)
  if has_key(temp_state, 'bufnr')
    let url = bufname(temp_state.bufnr)
  endif
  let url = s:Slash(fnamemodify(url, ':p'))
  if url =~# '/$' && s:Slash(a:url) !~# '/$'
    let url = url[0:-2]
  endif
  let [argdir, commit, file] = s:DirCommitFile(a:url)
  if len(argdir) && s:cpath(argdir) !=# s:cpath(dir)
    let file = ''
  elseif len(dir) && s:cpath(url[0 : len(dir)]) ==# s:cpath(dir . '/')
    let file = '/.git'.url[strlen(dir) : -1]
  elseif len(tree) && s:cpath(url[0 : len(tree)]) ==# s:cpath(tree . '/')
    let file = url[len(tree) : -1]
  elseif s:cpath(url) ==# s:cpath(tree)
    let file = '/'
  endif
  if empty(file) && a:1 =~# '^$\|^[.:]/$'
    return FugitiveGitPath(fugitive#Real(a:url))
  endif
  return substitute(file, '^/', a:1, '')
endfunction

function! s:Relative(...) abort
  return fugitive#Path(@%, a:0 ? a:1 : ':(top)', a:0 > 1 ? a:2 : s:Dir())
endfunction

function! fugitive#Find(object, ...) abort
  if type(a:object) == type(0)
    let name = bufname(a:object)
    return FugitiveVimPath(name =~# '^$\|^/\|^\a\+:' ? name : getcwd() . '/' . name)
  elseif a:object =~# '^[~$]'
    let prefix = matchstr(a:object, '^[~$]\i*')
    let owner = expand(prefix)
    return FugitiveVimPath((len(owner) ? owner : prefix) . strpart(a:object, len(prefix)))
  elseif s:Slash(a:object) =~# '^$\|^/\|^\%(\a\a\+:\).*\%(//\|::\)' . (has('win32') ? '\|^\a:/' : '')
    return FugitiveVimPath(a:object)
  elseif s:Slash(a:object) =~# '^\.\.\=\%(/\|$\)'
    return FugitiveVimPath(simplify(getcwd() . '/' . a:object))
  endif
  let dir = a:0 ? a:1 : s:Dir()
  if empty(dir)
    let file = matchstr(a:object, '^\%(:\d:\|[^:]*:\)\zs.*', '', '')
    let dir = FugitiveExtractGitDir(file)
    if empty(dir)
      return fnamemodify(FugitiveVimPath(len(file) ? file : a:object), ':p')
    endif
  endif
  let rev = s:Slash(a:object)
  let tree = s:Tree(dir)
  let base = len(tree) ? tree : 'fugitive://' . dir . '//0'
  if rev ==# '.git'
    let f = len(tree) ? tree . '/.git' : dir
  elseif rev =~# '^\.git/'
    let f = substitute(rev, '^\.git', '', '')
    let cdir = fugitive#CommonDir(dir)
    if f =~# '^/\.\./\.\.\%(/\|$\)'
      let f = simplify(len(tree) ? tree . f[3:-1] : dir . f)
    elseif f =~# '^/\.\.\%(/\|$\)'
      let f = base . f[3:-1]
    elseif cdir !=# dir && (
          \ f =~# '^/\%(config\|hooks\|info\|logs/refs\|objects\|refs\|worktrees\)\%(/\|$\)' ||
          \ f !~# '^/\%(index$\|index\.lock$\|\w*MSG$\|\w*HEAD$\|logs/\w*HEAD$\|logs$\|rebase-\w\+\)\%(/\|$\)' &&
          \ getftime(FugitiveVimPath(dir . f)) < 0 && getftime(FugitiveVimPath(cdir . f)) >= 0)
      let f = simplify(cdir . f)
    else
      let f = simplify(dir . f)
    endif
  elseif rev ==# ':/'
    let f = base
  elseif rev =~# '^\.\%(/\|$\)'
    let f = base . rev[1:-1]
  elseif rev =~# '^::\%(/\|\a\+\:\)'
    let f = rev[2:-1]
  elseif rev =~# '^::\.\.\=\%(/\|$\)'
    let f = simplify(getcwd() . '/' . rev[2:-1])
  elseif rev =~# '^::'
    let f = base . '/' . rev[2:-1]
  elseif rev =~# '^:\%([0-3]:\)\=\.\.\=\%(/\|$\)\|^:[0-3]:\%(/\|\a\+:\)'
    let f = rev =~# '^:\%([0-3]:\)\=\.' ? simplify(getcwd() . '/' . matchstr(rev, '\..*')) : rev[3:-1]
    if s:cpath(base . '/', (f . '/')[0 : len(base)])
      let f = 'fugitive://' . dir . '//' . +matchstr(rev, '^:\zs\d\ze:') . '/' . strpart(f, len(base) + 1)
    else
      let altdir = FugitiveExtractGitDir(f)
      if len(altdir) && !s:cpath(dir, altdir)
        return fugitive#Find(a:object, altdir)
      endif
    endif
  elseif rev =~# '^:[0-3]:'
    let f = 'fugitive://' . dir . '//' . rev[1] . '/' . rev[3:-1]
  elseif rev ==# ':'
    if $GIT_INDEX_FILE =~# '/[^/]*index[^/]*\.lock$' && s:cpath(fnamemodify($GIT_INDEX_FILE,':p')[0:strlen(dir)]) ==# s:cpath(dir . '/') && filereadable($GIT_INDEX_FILE)
      let f = fnamemodify($GIT_INDEX_FILE, ':p')
    else
      let f = fugitive#Find('.git/index', dir)
    endif
  elseif rev =~# '^:(\%(top\|top,literal\|literal,top\|literal\))'
    let f = matchstr(rev, ')\zs.*')
    if f=~# '^\.\.\=\%(/\|$\)'
      let f = simplify(getcwd() . '/' . f)
    elseif f !~# '^/\|^\%(\a\a\+:\).*\%(//\|::\)' . (has('win32') ? '\|^\a:/' : '')
      let f = base . '/' . f
    endif
  elseif rev =~# '^:/\@!'
    let f = 'fugitive://' . dir . '//0/' . rev[1:-1]
  else
    if !exists('f')
      let commit = substitute(matchstr(rev, '^[^:.-][^:]*\|^:.*'), '^@\%($\|[~^]\|@{\)\@=', 'HEAD', '')
      let file = substitute(matchstr(rev, '^[^:.-][^:]*\zs:.*'), '^:', '/', '')
      if file =~# '^/\.\.\=\%(/\|$\)\|^//\|^/\a\+:'
        let file = file =~# '^/\.' ? simplify(getcwd() . file) : file[1:-1]
        if s:cpath(base . '/', (file . '/')[0 : len(base)])
          let file = '/' . strpart(file, len(base) + 1)
        else
          let altdir = FugitiveExtractGitDir(file)
          if len(altdir) && !s:cpath(dir, altdir)
            return fugitive#Find(a:object, altdir)
          endif
          return file
        endif
      endif
      let commits = split(commit, '\.\.\.-\@!', 1)
      if len(commits) == 2
        call map(commits, 'empty(v:val) || v:val ==# "@" ? "HEAD" : v:val')
        let commit = matchstr(s:ChompDefault('', [dir, 'merge-base'] + commits + ['--']), '\<[0-9a-f]\{40,\}\>')
      endif
      if commit !~# '^[0-9a-f]\{40,\}$'
        let commit = matchstr(s:ChompDefault('', [dir, 'rev-parse', '--verify', commit, '--']), '\<[0-9a-f]\{40,\}\>')
      endif
      if len(commit)
        let f = 'fugitive://' . dir . '//' . commit . file
      else
        let f = base . '/' . substitute(rev, '^:/:\=\|^[^:]\+:', '', '')
      endif
    endif
  endif
  return FugitiveVimPath(f)
endfunction

function! s:Generate(rev, ...) abort
  return fugitive#Find(a:rev, a:0 ? a:1 : s:Dir())
endfunction

function! s:DotRelative(path, ...) abort
  let cwd = a:0 ? a:1 : getcwd()
  let path = substitute(a:path, '^[~$]\i*', '\=expand(submatch(0))', '')
  if len(cwd) && s:cpath(cwd . '/', (path . '/')[0 : len(cwd)])
    return '.' . strpart(path, len(cwd))
  endif
  return a:path
endfunction

function! fugitive#Object(...) abort
  let dir = a:0 > 1 ? a:2 : s:Dir()
  let [fdir, rev] = s:DirRev(a:0 ? a:1 : @%)
  if s:cpath(dir) !=# s:cpath(fdir)
    let rev = ''
  endif
  let tree = s:Tree(dir)
  let full = a:0 ? a:1 : @%
  let full = fnamemodify(full, ':p' . (s:Slash(full) =~# '/$' ? '' : ':s?/$??'))
  if empty(rev) && empty(tree)
    return FugitiveGitPath(full)
  elseif empty(rev)
    let rev = fugitive#Path(full, './', dir)
    if rev =~# '^\./.git\%(/\|$\)'
      return FugitiveGitPath(full)
    endif
  endif
  if rev !~# '^\.\%(/\|$\)' || s:cpath(getcwd(), tree)
    return rev
  else
    return FugitiveGitPath(tree . rev[1:-1])
  endif
endfunction

let s:var = '\%(%\|#<\=\d\+\|##\=\)'
let s:flag = '\%(:[p8~.htre]\|:g\=s\(.\).\{-\}\1.\{-\}\1\)'
let s:expand = '\%(\(' . s:var . '\)\(' . s:flag . '*\)\(:S\)\=\)'

function! s:BufName(var) abort
  if a:var ==# '%'
    return bufname(get(s:TempState(), 'bufnr', ''))
  elseif a:var =~# '^#\d*$'
    let nr = get(s:TempState(bufname(+a:var[1:-1])), 'bufnr', '')
    return bufname(nr ? nr : +a:var[1:-1])
  else
    return expand(a:var)
  endif
endfunction

function! s:ExpandVarLegacy(str) abort
  if get(g:, 'fugitive_legacy_quoting', 1)
    return substitute(a:str, '\\\ze[%#!]', '', 'g')
  else
    return a:str
  endif
endfunction

function! s:ExpandVar(other, var, flags, esc, ...) abort
  let cwd = a:0 ? a:1 : getcwd()
  if a:other =~# '^\'
    return a:other[1:-1]
  elseif a:other =~# '^'''
    return s:ExpandVarLegacy(substitute(a:other[1:-2], "''", "'", "g"))
  elseif a:other =~# '^"'
    return s:ExpandVarLegacy(substitute(a:other[1:-2], '""', '"', "g"))
  elseif a:other =~# '^!'
    let buffer = s:BufName(len(a:other) > 1 ? '#'. a:other[1:-1] : '%')
    let owner = s:Owner(buffer)
    return len(owner) ? owner : '@'
  endif
  let flags = a:flags
  let file = s:DotRelative(fugitive#Real(s:BufName(a:var)), cwd)
  while len(flags)
    let flag = matchstr(flags, s:flag)
    let flags = strpart(flags, len(flag))
    if flag ==# ':.'
      let file = s:DotRelative(file, cwd)
    else
      let file = fnamemodify(file, flag)
    endif
  endwhile
  let file = s:Slash(file)
  return (len(a:esc) ? shellescape(file) : file)
endfunction

function! s:Expand(rev, ...) abort
  if a:rev =~# '^:[0-3]$'
    let file = len(expand('%')) ? a:rev . ':%' : '%'
  elseif a:rev ==# '>'
    let file = '%'
  elseif a:rev =~# '^>[~^]'
    let file = len(expand('%')) ? '!' . a:rev[1:-1] . ':%' : '%'
  elseif a:rev =~# '^>[> ]\@!'
    let file = len(expand('%')) ? a:rev[1:-1] . ':%' : '%'
  else
    let file = a:rev
  endif
  return substitute(file,
        \ '\(\\[' . s:fnameescape . ']\|^\\[>+-]\|!\d*\)\|' . s:expand,
        \ '\=s:ExpandVar(submatch(1),submatch(2),submatch(3),"", a:0 ? a:1 : getcwd())', 'g')
endfunction

function! fugitive#Expand(object) abort
  return substitute(a:object,
        \ '\(\\[' . s:fnameescape . ']\|^\\[>+-]\|!\d*\)\|' . s:expand,
        \ '\=s:ExpandVar(submatch(1),submatch(2),submatch(3),submatch(5))', 'g')
endfunction

function! s:ExpandSplit(string, ...) abort
  let list = []
  let string = a:string
  let handle_bar = a:0 && a:1
  let dquote = handle_bar ? '"\%([^"]\|""\|\\"\)*"\|' : ''
  let cwd = a:0 > 1 ? a:2 : getcwd()
  while string =~# '\S'
    if handle_bar && string =~# '^\s*|'
      return [list, substitute(string, '^\s*', '', '')]
    endif
    let arg = matchstr(string, '^\s*\%(' . dquote . '''[^'']*''\|\\.\|[^[:space:] ' . (handle_bar ? '|' : '') . ']\)\+')
    let string = strpart(string, len(arg))
    let arg = substitute(arg, '^\s\+', '', '')
    if !exists('seen_separator')
      let arg = substitute(arg, '^\%([^:.][^:]*:\|^:\|^:[0-3]:\)\=\zs\.\.\=\%(/.*\)\=$',
            \ '\=s:DotRelative(s:Slash(simplify(getcwd() . "/" . submatch(0))), cwd)', '')
    endif
    let arg = substitute(arg,
          \ '\(' . dquote . '''\%(''''\|[^'']\)*''\|\\[' . s:fnameescape . ']\|^\\[>+-]\|!\d*\)\|' . s:expand,
          \ '\=s:ExpandVar(submatch(1),submatch(2),submatch(3),submatch(5), cwd)', 'g')
    call add(list, arg)
    if arg ==# '--'
      let seen_separator = 1
    endif
  endwhile
  return handle_bar ? [list, ''] : list
endfunction

function! s:SplitExpand(string, ...) abort
  return s:ExpandSplit(a:string, 0, a:0 ? a:1 : getcwd())
endfunction

function! s:SplitExpandChain(string, ...) abort
  return s:ExpandSplit(a:string, 1, a:0 ? a:1 : getcwd())
endfunction

let s:trees = {}
let s:indexes = {}
function! s:TreeInfo(dir, commit) abort
  if a:commit =~# '^:\=[0-3]$'
    let index = get(s:indexes, a:dir, [])
    let newftime = getftime(fugitive#Find('.git/index', a:dir))
    if get(index, 0, -1) < newftime
      let [lines, exec_error] = s:LinesError([a:dir, 'ls-files', '--stage', '--'])
      let s:indexes[a:dir] = [newftime, {'0': {}, '1': {}, '2': {}, '3': {}}]
      if exec_error
        return [{}, -1]
      endif
      for line in lines
        let [info, filename] = split(line, "\t")
        let [mode, sha, stage] = split(info, '\s\+')
        let s:indexes[a:dir][1][stage][filename] = [newftime, mode, 'blob', sha, -2]
        while filename =~# '/'
          let filename = substitute(filename, '/[^/]*$', '', '')
          let s:indexes[a:dir][1][stage][filename] = [newftime, '040000', 'tree', '', 0]
        endwhile
      endfor
    endif
    return [get(s:indexes[a:dir][1], a:commit[-1:-1], {}), newftime]
  elseif a:commit =~# '^\x\{40,\}$'
    if !has_key(s:trees, a:dir)
      let s:trees[a:dir] = {}
    endif
    if !has_key(s:trees[a:dir], a:commit)
      let [ftime, exec_error] = s:ChompError([a:dir, 'log', '-1', '--pretty=format:%ct', a:commit, '--'])
      if exec_error
        let s:trees[a:dir][a:commit] = [{}, -1]
        return s:trees[a:dir][a:commit]
      endif
      let s:trees[a:dir][a:commit] = [{}, +ftime]
      let [lines, exec_error] = s:LinesError([a:dir, 'ls-tree', '-rtl', '--full-name', a:commit, '--'])
      if exec_error
        return s:trees[a:dir][a:commit]
      endif
      for line in lines
        let [info, filename] = split(line, "\t")
        let [mode, type, sha, size] = split(info, '\s\+')
        let s:trees[a:dir][a:commit][0][filename] = [+ftime, mode, type, sha, +size, filename]
      endfor
    endif
    return s:trees[a:dir][a:commit]
  endif
  return [{}, -1]
endfunction

function! s:PathInfo(url) abort
  let [dir, commit, file] = s:DirCommitFile(a:url)
  if empty(dir) || !get(g:, 'fugitive_file_api', 1)
    return [-1, '000000', '', '', -1]
  endif
  let path = substitute(file[1:-1], '/*$', '', '')
  let [tree, ftime] = s:TreeInfo(dir, commit)
  let entry = empty(path) ? [ftime, '040000', 'tree', '', -1] : get(tree, path, [])
  if empty(entry) || file =~# '/$' && entry[2] !=# 'tree'
    return [-1, '000000', '', '', -1]
  else
    return entry
  endif
endfunction

function! fugitive#simplify(url) abort
  let [dir, commit, file] = s:DirCommitFile(a:url)
  if empty(dir)
    return ''
  endif
  if file =~# '/\.\.\%(/\|$\)'
    let tree = s:Tree(dir)
    if len(tree)
      let path = simplify(tree . file)
      if strpart(path . '/', 0, len(tree) + 1) !=# tree . '/'
        return FugitiveVimPath(path)
      endif
    endif
  endif
  return FugitiveVimPath('fugitive://' . simplify(dir) . '//' . commit . simplify(file))
endfunction

function! fugitive#resolve(url) abort
  let url = fugitive#simplify(a:url)
  if url =~? '^fugitive:'
    return url
  else
    return resolve(url)
  endif
endfunction

function! fugitive#getftime(url) abort
  return s:PathInfo(a:url)[0]
endfunction

function! fugitive#getfsize(url) abort
  let entry = s:PathInfo(a:url)
  if entry[4] == -2 && entry[2] ==# 'blob' && len(entry[3])
    let dir = s:DirCommitFile(a:url)[0]
    let entry[4] = +s:ChompDefault(-1, [dir, 'cat-file', '-s', entry[3]])
  endif
  return entry[4]
endfunction

function! fugitive#getftype(url) abort
  return get({'tree': 'dir', 'blob': 'file'}, s:PathInfo(a:url)[2], '')
endfunction

function! fugitive#filereadable(url) abort
  return s:PathInfo(a:url)[2] ==# 'blob'
endfunction

function! fugitive#filewritable(url) abort
  let [dir, commit, file] = s:DirCommitFile(a:url)
  if commit !~# '^\d$' || !filewritable(fugitive#Find('.git/index', dir))
    return 0
  endif
  return s:PathInfo(a:url)[2] ==# 'blob' ? 1 : 2
endfunction

function! fugitive#isdirectory(url) abort
  return s:PathInfo(a:url)[2] ==# 'tree'
endfunction

function! fugitive#getfperm(url) abort
  let [dir, commit, file] = s:DirCommitFile(a:url)
  let perm = getfperm(dir)
  let fperm = s:PathInfo(a:url)[1]
  if fperm ==# '040000'
    let fperm = '000755'
  endif
  if fperm !~# '[15]'
    let perm = tr(perm, 'x', '-')
  endif
  if fperm !~# '[45]$'
    let perm = tr(perm, 'rw', '--')
  endif
  if commit !~# '^\d$'
    let perm = tr(perm, 'w', '-')
  endif
  return perm ==# '---------' ? '' : perm
endfunction

function! fugitive#setfperm(url, perm) abort
  let [dir, commit, file] = s:DirCommitFile(a:url)
  let entry = s:PathInfo(a:url)
  let perm = fugitive#getfperm(a:url)
  if commit !~# '^\d$' || entry[2] !=# 'blob' ||
      \ substitute(perm, 'x', '-', 'g') !=# substitute(a:perm, 'x', '-', 'g')
    return -2
  endif
  let exec_error = s:SystemError([dir, 'update-index', '--index-info'],
        \ (a:perm =~# 'x' ? '000755 ' : '000644 ') . entry[3] . ' ' . commit . "\t" . file[1:-1])[1]
  return exec_error ? -1 : 0
endfunction

function! s:TempCmd(out, cmd) abort
  let prefix = ''
  try
    let cmd = (type(a:cmd) == type([]) ? fugitive#Prepare(a:cmd) : a:cmd)
    let redir = ' > ' . a:out
    if s:winshell()
      let cmd_escape_char = &shellxquote == '(' ?  '^' : '^^^'
      return s:SystemError('cmd /c "' . prefix . s:gsub(cmd, '[<>]', cmd_escape_char . '&') . redir . '"')
    elseif &shell =~# 'fish'
      return s:SystemError(' begin;' . prefix . cmd . redir . ';end ')
    else
      return s:SystemError(' (' . prefix . cmd . redir . ') ')
    endif
  endtry
endfunction

if !exists('s:blobdirs')
  let s:blobdirs = {}
endif
function! s:BlobTemp(url) abort
  let [dir, commit, file] = s:DirCommitFile(a:url)
  if empty(file)
    return ''
  endif
  if !has_key(s:blobdirs, dir)
    let s:blobdirs[dir] = tempname()
  endif
  let tempfile = s:blobdirs[dir] . '/' . commit . file
  let tempparent = fnamemodify(tempfile, ':h')
  if !isdirectory(tempparent)
    call mkdir(tempparent, 'p')
  endif
  if commit =~# '^\d$' || !filereadable(tempfile)
    let rev = s:DirRev(a:url)[1]
    let exec_error = s:TempCmd(tempfile, [dir, 'cat-file', 'blob', rev])[1]
    if exec_error
      call delete(tempfile)
      return ''
    endif
  endif
  return s:Resolve(tempfile)
endfunction

function! fugitive#readfile(url, ...) abort
  let entry = s:PathInfo(a:url)
  if entry[2] !=# 'blob'
    return []
  endif
  let temp = s:BlobTemp(a:url)
  if empty(temp)
    return []
  endif
  return call('readfile', [temp] + a:000)
endfunction

function! fugitive#writefile(lines, url, ...) abort
  let url = type(a:url) ==# type('') ? a:url : ''
  let [dir, commit, file] = s:DirCommitFile(url)
  let entry = s:PathInfo(url)
  if commit =~# '^\d$' && entry[2] !=# 'tree'
    let temp = tempname()
    if a:0 && a:1 =~# 'a' && entry[2] ==# 'blob'
      call writefile(fugitive#readfile(url, 'b'), temp, 'b')
    endif
    call call('writefile', [a:lines, temp] + a:000)
    let [hash, exec_error] = s:ChompError([dir, 'hash-object', '-w', temp])
    let mode = len(entry[1]) ? entry[1] : '100644'
    if !exec_error && hash =~# '^\x\{40,\}$'
      let exec_error = s:SystemError([dir, 'update-index', '--index-info'],
            \ mode . ' ' . hash . ' ' . commit . "\t" . file[1:-1])[1]
      if !exec_error
        return 0
      endif
    endif
  endif
  return call('writefile', [a:lines, a:url] + a:000)
endfunction

let s:globsubs = {
      \ '/**/': '/\%([^./][^/]*/\)*',
      \ '/**': '/\%([^./][^/]\+/\)*[^./][^/]*',
      \ '**/': '[^/]*\%(/[^./][^/]*\)*',
      \ '**': '.*',
      \ '/*': '/[^/.][^/]*',
      \ '*': '[^/]*',
      \ '?': '[^/]'}
function! fugitive#glob(url, ...) abort
  let [dirglob, commit, glob] = s:DirCommitFile(a:url)
  let append = matchstr(glob, '/*$')
  let glob = substitute(glob, '/*$', '', '')
  let pattern = '^' . substitute(glob, '/\=\*\*/\=\|/\=\*\|[.?\$]\|^^', '\=get(s:globsubs, submatch(0), "\\" . submatch(0))', 'g')[1:-1] . '$'
  let results = []
  for dir in dirglob =~# '[*?]' ? split(glob(dirglob), "\n") : [dirglob]
    if empty(dir) || !get(g:, 'fugitive_file_api', 1) || !filereadable(fugitive#Find('.git/HEAD', dir))
      continue
    endif
    let files = items(s:TreeInfo(dir, commit)[0])
    if len(append)
      call filter(files, 'v:val[1][2] ==# "tree"')
    endif
    call map(files, 'v:val[0]')
    call filter(files, 'v:val =~# pattern')
    let prepend = 'fugitive://' . dir . '//' . substitute(commit, '^:', '', '') . '/'
    call sort(files)
    call map(files, 'FugitiveVimPath(prepend . v:val . append)')
    call extend(results, files)
  endfor
  if a:0 > 1 && a:2
    return results
  else
    return join(results, "\n")
  endif
endfunction

function! fugitive#delete(url, ...) abort
  let [dir, commit, file] = s:DirCommitFile(a:url)
  if a:0 && len(a:1) || commit !~# '^\d$'
    return -1
  endif
  let entry = s:PathInfo(a:url)
  if entry[2] !=# 'blob'
    return -1
  endif
  let exec_error = s:SystemError([dir, 'update-index', '--index-info'],
        \ '000000 0000000000000000000000000000000000000000 ' . commit . "\t" . file[1:-1])[1]
  return exec_error ? -1 : 0
endfunction

" Section: Buffer Object

let s:buffer_prototype = {}

function! fugitive#buffer(...) abort
  let buffer = {'#': bufnr(a:0 ? a:1 : '%')}
  call extend(buffer, s:buffer_prototype, 'keep')
  return buffer
endfunction

function! s:buffer_repo() dict abort
  return fugitive#repo(self['#'])
endfunction

function! s:buffer_type(...) dict abort
  return 'see b:fugitive_type'
endfunction

call s:add_methods('buffer', ['repo', 'type'])

" Section: Completion

function! s:FilterEscape(items, ...) abort
  let items = copy(a:items)
  call map(items, 's:fnameescape(v:val)')
  if a:0 && type(a:1) == type('')
    call filter(items, 'strpart(v:val, 0, strlen(a:1)) ==# a:1')
  endif
  return items
endfunction

function! s:GlobComplete(lead, pattern) abort
  if a:lead ==# '/'
    return []
  elseif v:version >= 704
    let results = glob(a:lead . a:pattern, 0, 1)
  else
    let results = split(glob(a:lead . a:pattern), "\n")
  endif
  call map(results, 'v:val !~# "/$" && isdirectory(v:val) ? v:val."/" : v:val')
  call map(results, 'v:val[ strlen(a:lead) : -1 ]')
  return results
endfunction

function! fugitive#CompletePath(base, ...) abort
  let dir = a:0 == 1 ? a:1 : a:0 == 3 ? a:3 : s:Dir()
  let tree = s:Tree(dir) . '/'
  let strip = '^\%(:/:\=\|:(top)\|:(top,literal)\|:(literal,top)\|:(literal)\)'
  let base = substitute(a:base, strip, '', '')
  if base =~# '^\.git/'
    let pattern = s:gsub(base[5:-1], '/', '*&').'*'
    let matches = s:GlobComplete(dir . '/', pattern)
    let cdir = fugitive#CommonDir(dir)
    if len(cdir) && s:cpath(dir) !=# s:cpath(cdir)
      call extend(matches, s:GlobComplete(cdir . '/', pattern))
    endif
    call s:Uniq(matches)
    call map(matches, "'.git/' . v:val")
  elseif base =~# '^\~/'
    let matches = map(s:GlobComplete(expand('~/'), base[2:-1] . '*'), '"~/" . v:val')
  elseif a:base =~# '^/\|^\a\+:\|^\.\.\=/\|^:(literal)'
    let matches = s:GlobComplete('', base . '*')
  elseif len(tree) > 1
    let matches = s:GlobComplete(tree, s:gsub(base, '/', '*&').'*')
  else
    let matches = []
  endif
  call map(matches, 's:fnameescape(s:Slash(matchstr(a:base, strip) . v:val))')
  return matches
endfunction

function! fugitive#PathComplete(...) abort
  return call('fugitive#CompletePath', a:000)
endfunction

function! s:CompleteHeads(dir) abort
  let dir = fugitive#Find('.git/', a:dir)
  return sort(filter(['HEAD', 'FETCH_HEAD', 'ORIG_HEAD'] + s:merge_heads, 'filereadable(dir . v:val)')) +
        \ sort(s:LinesError('rev-parse', '--symbolic', '--branches', '--tags', '--remotes')[0])
endfunction

function! fugitive#CompleteObject(base, ...) abort
  let dir = a:0 == 1 ? a:1 : a:0 == 3 ? a:3 : s:Dir()
  let cwd = getcwd()
  let tree = s:Tree(dir) . '/'
  let subdir = ''
  if len(tree) > 1 && s:cpath(tree, cwd[0 : len(tree) - 1])
    let subdir = strpart(cwd, len(tree)) . '/'
  endif

  if a:base =~# '^\.\=/\|^:(' || a:base !~# ':'
    let results = []
    if a:base =~# '^refs/'
      let results += map(s:GlobComplete(fugitive#CommonDir(dir) . '/', a:base . '*'), 's:Slash(v:val)')
      call map(results, 's:fnameescape(v:val)')
    elseif a:base !~# '^\.\=/\|^:('
      let heads = s:CompleteHeads(dir)
      if filereadable(fugitive#Find('.git/refs/stash', dir))
        let heads += ["stash"]
        let heads += sort(s:LinesError(["stash","list","--pretty=format:%gd"], dir)[0])
      endif
      let results += s:FilterEscape(heads, a:base)
    endif
    if !empty(tree)
      let results += a:0 == 1 ? fugitive#CompletePath(a:base, dir) : fugitive#CompletePath(a:base)
    endif
    return results

  elseif a:base =~# '^:'
    let entries = s:LinesError(['ls-files','--stage'], dir)[0]
    if a:base =~# ':\./'
      call map(entries, 'substitute(v:val, "\\M\t\\zs" . subdir, "./", "")')
    endif
    call map(entries,'s:sub(v:val,".*(\\d)\\t(.*)",":\\1:\\2")')
    if a:base !~# '^:[0-3]\%(:\|$\)'
      call filter(entries,'v:val[1] == "0"')
      call map(entries,'v:val[2:-1]')
    endif

  else
    let tree = matchstr(a:base, '.*[:/]')
    let entries = s:LinesError(['ls-tree', substitute(tree,  ':\zs\./', '\=subdir', '')], dir)[0]
    call map(entries,'s:sub(v:val,"^04.*\\zs$","/")')
    call map(entries,'tree.s:sub(v:val,".*\t","")')

  endif
  return s:FilterEscape(entries, a:base)
endfunction

function! s:CompleteSub(subcommand, A, L, P, ...) abort
  let pre = strpart(a:L, 0, a:P)
  if pre =~# ' -- '
    return fugitive#CompletePath(a:A)
  elseif a:A =~# '^-' || a:A is# 0
    return s:FilterEscape(split(s:ChompDefault('', a:subcommand, '--git-completion-helper'), ' '), a:A)
  elseif !a:0
    return fugitive#CompleteObject(a:A, s:Dir())
  elseif type(a:1) == type(function('tr'))
    return call(a:1, [a:A, a:L, a:P])
  else
    return s:FilterEscape(a:1, a:A)
  endif
endfunction

function! s:CompleteRevision(A, L, P, ...) abort
  return s:FilterEscape(s:CompleteHeads(s:Dir()), a:A)
endfunction

function! s:CompleteRemote(A, L, P) abort
  let remote = matchstr(a:L, '\u\w*[! ] *\zs\S\+\ze ')
  if !empty(remote)
    let matches = s:LinesError('ls-remote', remote)[0]
    call filter(matches, 'v:val =~# "\t" && v:val !~# "{"')
    call map(matches, 's:sub(v:val, "^.*\t%(refs/%(heads/|tags/)=)=", "")')
  else
    let matches = s:LinesError('remote')[0]
  endif
  return s:FilterEscape(matches, a:A)
endfunction

" Section: Buffer auto-commands

function! s:ReplaceCmd(cmd) abort
  let temp = tempname()
  let [err, exec_error] = s:TempCmd(temp, a:cmd)
  if exec_error
    call s:throw((len(err) ? err : filereadable(temp) ? join(readfile(temp), ' ') : 'unknown error running ' . a:cmd))
  endif
  let temp = s:Resolve(temp)
  let fn = expand('%:p')
  silent exe 'keepalt file '.temp
  let modelines = &modelines
  try
    set modelines=0
    silent keepjumps noautocmd edit!
  finally
    let &modelines = modelines
    try
      silent exe 'keepalt file '.s:fnameescape(fn)
    catch /^Vim\%((\a\+)\)\=:E302:/
    endtry
    call delete(temp)
    if s:cpath(fnamemodify(bufname('$'), ':p'), temp)
      silent execute 'bwipeout '.bufnr('$')
    endif
  endtry
endfunction

function! s:QueryLog(refspec) abort
  let lines = s:LinesError(['log', '-n', '256', '--format=%h%x09%s', a:refspec, '--'])[0]
  call map(lines, 'split(v:val, "\t")')
  call map(lines, '{"type": "Log", "commit": v:val[0], "subject": v:val[-1]}')
  return lines
endfunction

function! s:FormatLog(dict) abort
  return a:dict.commit . ' ' . a:dict.subject
endfunction

function! s:FormatRebase(dict) abort
  return a:dict.status . ' ' . a:dict.commit . ' ' . a:dict.subject
endfunction

function! s:FormatFile(dict) abort
  return a:dict.status . ' ' . a:dict.filename
endfunction

function! s:Format(val) abort
  if type(a:val) == type({})
    return s:Format{a:val.type}(a:val)
  elseif type(a:val) == type([])
    return map(copy(a:val), 's:Format(v:val)')
  else
    return '' . a:val
  endif
endfunction

function! s:AddHeader(key, value) abort
  if empty(a:value)
    return
  endif
  let before = 1
  while !empty(getline(before))
    let before += 1
  endwhile
  call append(before - 1, [a:key . ':' . (len(a:value) ? ' ' . a:value : '')])
  if before == 1 && line('$') == 2
    silent keepjumps 2delete _
  endif
endfunction

function! s:AddSection(label, lines, ...) abort
  let note = a:0 ? a:1 : ''
  if empty(a:lines) && empty(note)
    return
  endif
  call append(line('$'), ['', a:label . (len(note) ? ': ' . note : ' (' . len(a:lines) . ')')] + s:Format(a:lines))
endfunction

function! fugitive#BufReadStatus() abort
  let amatch = s:Slash(expand('%:p'))
  let b:fugitive_type = 'index'
  unlet! b:fugitive_reltime
  try
    silent doautocmd BufReadPre
    let cmd = [fnamemodify(amatch, ':h')]
    setlocal noro ma nomodeline buftype=nowrite
    if s:cpath(fnamemodify($GIT_INDEX_FILE !=# '' ? $GIT_INDEX_FILE : fugitive#Find('.git/index'), ':p')) !=# s:cpath(amatch)
      let cmd += ['-c', 'GIT_INDEX_FILE=' . amatch]
    endif

    let b:fugitive_files = {'Staged': {}, 'Unstaged': {}}
    let [staged, unstaged, untracked] = [[], [], []]
    let props = {}

    if fugitive#GitVersion(2, 11)
      let cmd += ['status', '--porcelain=v2', '-bz']
      let [output, message, exec_error] = s:NullError(cmd)
      if exec_error
        throw 'fugitive: ' . message
      endif

      let i = 0
      while i < len(output)
        let line = output[i]
        let prop = matchlist(line, '# \(\S\+\) \(.*\)')
        if len(prop)
          let props[prop[1]] = prop[2]
        elseif line[0] ==# '?'
          call add(untracked, {'type': 'File', 'status': line[0], 'filename': line[2:-1]})
        elseif line[0] !=# '#'
          if line[0] ==# 'u'
            let file = matchstr(line, '^.\{37\} \x\{40,\} \x\{40,\} \x\{40,\} \zs.*$')
          else
            let file = matchstr(line, '^.\{30\} \x\{40,\} \x\{40,\} \zs.*$')
          endif
          if line[0] ==# '2'
            let i += 1
            let file = matchstr(file, ' \zs.*')
            let files = output[i] . ' -> ' . file
          else
            let files = file
          endif
          let sub = matchstr(line, '^[12u] .. \zs....')
          if line[2] !=# '.'
            call add(staged, {'type': 'File', 'status': line[2], 'filename': files, 'sub': sub})
          endif
          if line[3] !=# '.'
            call add(unstaged, {'type': 'File', 'status': get({'C':'M','M':'?','U':'?'}, matchstr(sub, 'S\.*\zs[CMU]'), line[3]), 'filename': file, 'sub': sub})
          endif
        endif
        let i += 1
      endwhile
      let branch = substitute(get(props, 'branch.head', '(unknown)'), '\C^(\%(detached\|unknown\))$', '', '')
      if len(branch)
        let head = branch
      elseif has_key(props, 'branch.oid')
        let head = props['branch.oid'][0:10]
      else
        let head = FugitiveHead(11)
      endif
      let pull = get(props, 'branch.upstream', '')
    else " git < 2.11
      let cmd += ['status', '--porcelain', '-bz']
      let [output, message, exec_error] = s:NullError(cmd)
      if exec_error
        throw 'fugitive: ' . message
      endif

      while get(output, 0, '') =~# '^\l\+:'
        call remove(output, 0)
      endwhile
      let head = matchstr(output[0], '^## \zs\S\+\ze\%($\| \[\)')
      let pull = ''
      if head =~# '\.\.\.'
        let [head, pull] = split(head, '\.\.\.')
        let branch = head
      elseif head ==# 'HEAD' || empty(head)
        let head = FugitiveHead(11)
        let branch = ''
      else
        let branch = head
      endif

      let i = 0
      while i < len(output)
        let line = output[i]
        let file = line[3:-1]
        let files = file
        let i += 1
        if line[2] !=# ' '
          continue
        endif
        if line[0:1] =~# '[RC]'
          let files = output[i] . ' -> ' . file
          let i += 1
        endif
        if line[0] !~# '[ ?!#]'
          call add(staged, {'type': 'File', 'status': line[0], 'filename': files, 'sub': ''})
        endif
        if line[0:1] ==# '??'
          call add(untracked, {'type': 'File', 'status': line[1], 'filename': files})
        elseif line[1] !~# '[ !#]'
          call add(unstaged, {'type': 'File', 'status': line[1], 'filename': file, 'sub': ''})
        endif
      endwhile
    endif

    if empty(s:Tree())
      let [unstaged, untracked] = [[], []]
    endif

    for dict in staged
      let b:fugitive_files['Staged'][dict.filename] = dict
    endfor
    for dict in unstaged
      let b:fugitive_files['Unstaged'][dict.filename] = dict
    endfor

    let config = fugitive#Config()

    let pull_type = 'Pull'
    if len(pull)
      let rebase = fugitive#Config('branch.' . branch . '.rebase', config)
      if empty(rebase)
        let rebase = fugitive#Config('pull.rebase', config)
      endif
      if rebase =~# '^\%(true\|yes\|on\|1\|interactive\)$'
        let pull_type = 'Rebase'
      elseif rebase =~# '^\%(false\|no|off\|0\|\)$'
        let pull_type = 'Merge'
      endif
    endif

    let push_remote = fugitive#Config('branch.' . branch . '.pushRemote', config)
    if empty(push_remote)
      let push_remote = fugitive#Config('remote.pushDefault', config)
    endif
    let push = len(push_remote) && len(branch) ? push_remote . '/' . branch : ''
    if empty(push)
      let push = pull
    endif

    if len(pull) && get(props, 'branch.ab') !~# ' -0$'
      let unpulled = s:QueryLog(head . '..' . pull)
    else
      let unpulled = []
    endif
    if len(push) && !(push ==# pull && get(props, 'branch.ab') =~# '^+0 ')
      let unpushed = s:QueryLog(push . '..' . head)
    else
      let unpushed = []
    endif

    if isdirectory(fugitive#Find('.git/rebase-merge/'))
      let rebasing_dir = fugitive#Find('.git/rebase-merge/')
    elseif isdirectory(fugitive#Find('.git/rebase-apply/'))
      let rebasing_dir = fugitive#Find('.git/rebase-apply/')
    endif

    let rebasing = []
    let rebasing_head = 'detached HEAD'
    if exists('rebasing_dir') && filereadable(rebasing_dir . 'git-rebase-todo')
      let rebasing_head = substitute(readfile(rebasing_dir . 'head-name')[0], '\C^refs/heads/', '', '')
      let len = 11
      let lines = readfile(rebasing_dir . 'git-rebase-todo')
      for line in lines
        let hash = matchstr(line, '^[^a-z].*\s\zs[0-9a-f]\{4,\}\ze\.\.')
        if len(hash)
          let len = len(hash)
          break
        endif
      endfor
      if getfsize(rebasing_dir . 'done') > 0
        let done = readfile(rebasing_dir . 'done')
        call map(done, 'substitute(v:val, ''^\l\+\>'', "done", "")')
        let done[-1] = substitute(done[-1], '^\l\+\>', 'stop', '')
        let lines = done + lines
      endif
      call reverse(lines)
      for line in lines
        let match = matchlist(line, '^\(\l\+\)\s\+\(\x\{4,\}\)\s\+\(.*\)')
        if len(match) && match[1] !~# 'exec\|merge\|label'
          call add(rebasing, {'type': 'Rebase', 'status': get(s:rebase_abbrevs, match[1], match[1]), 'commit': strpart(match[2], 0, len), 'subject': match[3]})
        endif
      endfor
    endif

    let diff = {'Staged': [], 'Unstaged': []}
    if len(staged)
      let diff['Staged'] =
          \ s:LinesError(['diff', '--color=never', '--no-ext-diff', '--no-prefix', '--cached'])[0]
    endif
    if len(unstaged)
      let diff['Unstaged'] =
          \ s:LinesError(['diff', '--color=never', '--no-ext-diff', '--no-prefix'])[0]
    endif
    let b:fugitive_diff = diff
    let expanded = get(b:, 'fugitive_expanded', {'Staged': {}, 'Unstaged': {}})
    let b:fugitive_expanded = {'Staged': {}, 'Unstaged': {}}

    silent keepjumps %delete_

    call s:AddHeader('Head', head)
    call s:AddHeader(pull_type, pull)
    if push !=# pull
      call s:AddHeader('Push', push)
    endif
    if empty(s:Tree())
      call s:AddHeader('Bare', 'yes')
    endif
    call s:AddSection('Rebasing ' . rebasing_head, rebasing)
    call s:AddSection('Untracked', untracked)
    call s:AddSection('Unstaged', unstaged)
    let unstaged_end = len(unstaged) ? line('$') : 0
    call s:AddSection('Staged', staged)
    let staged_end = len(staged) ? line('$') : 0
    call s:AddSection('Unpushed to ' . push, unpushed)
    call s:AddSection('Unpulled from ' . pull, unpulled)

    setlocal nomodified readonly noswapfile
    silent doautocmd BufReadPost
    setlocal nomodifiable
    if &bufhidden ==# ''
      setlocal bufhidden=delete
    endif
    let b:dispatch = ':Gfetch --all'
    call fugitive#MapJumps()
    call s:Map('n', '-', ":<C-U>execute <SID>Do('Toggle',0)<CR>", '<silent>')
    call s:Map('x', '-', ":<C-U>execute <SID>Do('Toggle',1)<CR>", '<silent>')
    call s:Map('n', 's', ":<C-U>execute <SID>Do('Stage',0)<CR>", '<silent>')
    call s:Map('x', 's', ":<C-U>execute <SID>Do('Stage',1)<CR>", '<silent>')
    call s:Map('n', 'u', ":<C-U>execute <SID>Do('Unstage',0)<CR>", '<silent>')
    call s:Map('x', 'u', ":<C-U>execute <SID>Do('Unstage',1)<CR>", '<silent>')
    call s:Map('n', 'U', ":exe <SID>EchoExec('reset', '-q')<CR>", '<silent>')
    call s:MapMotion('gu', "exe <SID>StageJump(v:count, 'Untracked', 'Unstaged')")
    call s:MapMotion('gU', "exe <SID>StageJump(v:count, 'Unstaged', 'Untracked')")
    call s:MapMotion('gs', "exe <SID>StageJump(v:count, 'Staged')")
    call s:MapMotion('gp', "exe <SID>StageJump(v:count, 'Unpushed')")
    call s:MapMotion('gP', "exe <SID>StageJump(v:count, 'Unpulled')")
    call s:MapMotion('gr', "exe <SID>StageJump(v:count, 'Rebasing')")
    call s:Map('n', 'C', ":<C-U>Gcommit<CR>:echohl WarningMsg<Bar>echo ':Gstatus C is deprecated in favor of cc'<Bar>echohl NONE<CR>", '<silent>')
    call s:Map('n', 'a', ":<C-U>execute <SID>Do('Toggle',0)<CR>", '<silent>')
    call s:Map('n', 'i', ":<C-U>execute <SID>NextExpandedHunk(v:count1)<CR>", '<silent>')
    call s:Map('n', "=", ":<C-U>execute <SID>StageInline('toggle',line('.'),v:count)<CR>", '<silent>')
    call s:Map('n', "<", ":<C-U>execute <SID>StageInline('hide',  line('.'),v:count)<CR>", '<silent>')
    call s:Map('n', ">", ":<C-U>execute <SID>StageInline('show',  line('.'),v:count)<CR>", '<silent>')
    call s:Map('x', "=", ":<C-U>execute <SID>StageInline('toggle',line(\"'<\"),line(\"'>\")-line(\"'<\")+1)<CR>", '<silent>')
    call s:Map('x', "<", ":<C-U>execute <SID>StageInline('hide',  line(\"'<\"),line(\"'>\")-line(\"'<\")+1)<CR>", '<silent>')
    call s:Map('x', ">", ":<C-U>execute <SID>StageInline('show',  line(\"'<\"),line(\"'>\")-line(\"'<\")+1)<CR>", '<silent>')
    call s:Map('n', 'D', ":<C-U>execute <SID>StageDiff('Gdiffsplit')<Bar>redraw<Bar>echohl WarningMsg<Bar> echo ':Gstatus D is deprecated in favor of dd'<Bar>echohl NONE<CR>", '<silent>')
    call s:Map('n', 'dd', ":<C-U>execute <SID>StageDiff('Gdiffsplit')<CR>", '<silent>')
    call s:Map('n', 'dh', ":<C-U>execute <SID>StageDiff('Ghdiffsplit')<CR>", '<silent>')
    call s:Map('n', 'ds', ":<C-U>execute <SID>StageDiff('Ghdiffsplit')<CR>", '<silent>')
    call s:Map('n', 'dp', ":<C-U>execute <SID>StageDiffEdit()<CR>", '<silent>')
    call s:Map('n', 'dv', ":<C-U>execute <SID>StageDiff('Gvdiffsplit')<CR>", '<silent>')
    call s:Map('n', 'd?', ":<C-U>help fugitive_d<CR>", '<silent>')
    call s:Map('n', 'P', ":<C-U>execute <SID>StagePatch(line('.'),line('.')+v:count1-1)<CR>", '<silent>')
    call s:Map('x', 'P', ":<C-U>execute <SID>StagePatch(line(\"'<\"),line(\"'>\"))<CR>", '<silent>')
    call s:Map('n', 'p', ":<C-U>if v:count<Bar>silent exe <SID>GF('pedit')<Bar>else<Bar>echoerr 'Use = for inline diff, P for :Git add/reset --patch, 1p for :pedit'<Bar>endif<CR>", '<silent>')
    call s:Map('x', 'p', ":<C-U>execute <SID>StagePatch(line(\"'<\"),line(\"'>\"))<CR>", '<silent>')
    call s:Map('n', 'I', ":<C-U>execute <SID>StagePatch(line('.'),line('.'))<CR>", '<silent>')
    call s:Map('x', 'I', ":<C-U>execute <SID>StagePatch(line(\"'<\"),line(\"'>\"))<CR>", '<silent>')
    if empty(mapcheck('q', 'n'))
      nnoremap <buffer> <silent> q :<C-U>if bufnr('$') == 1<Bar>quit<Bar>else<Bar>bdelete<Bar>endif<Bar>echohl WarningMsg<Bar>echo ':Gstatus q is deprecated in favor of gq or the built-in <Lt>C-W>q'<Bar>echohl NONE<CR>
    endif
    call s:Map('n', 'gq', ":<C-U>if bufnr('$') == 1<Bar>quit<Bar>else<Bar>bdelete<Bar>endif<CR>", '<silent>')
    call s:Map('n', 'R', ":echohl WarningMsg<Bar>echo 'Reloading is automatic.  Use :e to force'<Bar>echohl NONE<CR>", '<silent>')
    call s:Map('n', 'g<Bar>', ":<C-U>echoerr 'Changed to X'<CR>", '<silent>')
    call s:Map('x', 'g<Bar>', ":<C-U>echoerr 'Changed to X'<CR>", '<silent>')
    call s:Map('n', 'X', ":<C-U>execute <SID>StageDelete(line('.'), 0, v:count)<CR>", '<silent>')
    call s:Map('x', 'X', ":<C-U>execute <SID>StageDelete(line(\"'<\"), line(\"'>\"), v:count)<CR>", '<silent>')
    call s:Map('n', 'gI', ":<C-U>execute <SID>StageIgnore(line('.'), line('.'), v:count)<CR>", '<silent>')
    call s:Map('x', 'gI', ":<C-U>execute <SID>StageIgnore(line(\"'<\"), line(\"'>\"), v:count)<CR>", '<silent>')
    call s:Map('n', '.', ':<C-U> <C-R>=<SID>StageArgs(0)<CR><Home>')
    call s:Map('x', '.', ':<C-U> <C-R>=<SID>StageArgs(1)<CR><Home>')
    setlocal filetype=fugitive

    for [lnum, section] in [[staged_end, 'Staged'], [unstaged_end, 'Unstaged']]
      while len(getline(lnum))
        let filename = matchstr(getline(lnum), '^[A-Z?] \zs.*')
        if has_key(expanded[section], filename)
          call s:StageInline('show', lnum)
        endif
        let lnum -= 1
      endwhile
    endfor

    let b:fugitive_reltime = reltime()
    return ''
  catch /^fugitive:/
    return 'echoerr ' . string(v:exception)
  endtry
endfunction

function! fugitive#FileReadCmd(...) abort
  let amatch = a:0 ? a:1 : expand('<amatch>')
  let [dir, rev] = s:DirRev(amatch)
  let line = a:0 > 1 ? a:2 : line("'[")
  if empty(dir)
    return 'noautocmd ' . line . 'read ' . s:fnameescape(amatch)
  endif
  if rev !~# ':' && s:ChompDefault('', [dir, 'cat-file', '-t', rev]) =~# '^\%(commit\|tag\)$'
    let cmd = fugitive#Prepare(dir, 'log', '--pretty=format:%B', '-1', rev, '--')
  else
    let cmd = fugitive#Prepare(dir, 'cat-file', '-p', rev)
  endif
  return line . 'read !' . escape(cmd, '!#%')
endfunction

function! fugitive#FileWriteCmd(...) abort
  let tmp = tempname()
  let amatch = a:0 ? a:1 : expand('<amatch>')
  let autype = a:0 > 1 ? 'Buf' : 'File'
  if exists('#' . autype . 'WritePre')
    execute s:DoAutocmd(autype . 'WritePre ' . s:fnameescape(amatch))
  endif
  try
    let [dir, commit, file] = s:DirCommitFile(amatch)
    if commit !~# '^[0-3]$' || !v:cmdbang && (line("'[") != 1 || line("']") != line('$'))
      return "noautocmd '[,']write" . (v:cmdbang ? '!' : '') . ' ' . s:fnameescape(amatch)
    endif
    silent execute "'[,']write !".fugitive#Prepare(dir, 'hash-object', '-w', '--stdin', '--').' > '.tmp
    let sha1 = readfile(tmp)[0]
    let old_mode = matchstr(s:SystemError([dir, 'ls-files', '--stage', '.' . file])[0], '^\d\+')
    if empty(old_mode)
      let old_mode = executable(s:Tree(dir) . file) ? '100755' : '100644'
    endif
    let info = old_mode.' '.sha1.' '.commit."\t".file[1:-1]
    let [error, exec_error] = s:SystemError([dir, 'update-index', '--index-info'], info . "\n")
    if !exec_error
      setlocal nomodified
      if exists('#' . autype . 'WritePost')
        execute s:DoAutocmd(autype . 'WritePost ' . s:fnameescape(amatch))
      endif
      return ''
    else
      return 'echoerr '.string('fugitive: '.error)
    endif
  finally
    call delete(tmp)
  endtry
endfunction

function! fugitive#BufReadCmd(...) abort
  let amatch = a:0 ? a:1 : expand('<amatch>')
  try
    let [dir, rev] = s:DirRev(amatch)
    if empty(dir)
      return 'echo "Invalid Fugitive URL"'
    endif
    if rev =~# '^:\d$'
      let b:fugitive_type = 'stage'
    else
      let [b:fugitive_type, exec_error] = s:ChompError([dir, 'cat-file', '-t', rev])
      if exec_error && rev =~# '^:0'
        let sha = s:ChompDefault('', dir, 'write-tree', '--prefix=' . rev[3:-1])
        let exec_error = empty(sha)
        let b:fugitive_type = exec_error ? '' : 'tree'
      endif
      if exec_error
        let error = b:fugitive_type
        unlet b:fugitive_type
        setlocal noswapfile
        if empty(&bufhidden)
          setlocal bufhidden=delete
        endif
        if rev =~# '^:\d:'
          let &l:readonly = !filewritable(fugitive#Find('.git/index', dir))
          return 'silent doautocmd BufNewFile'
        else
          setlocal readonly nomodifiable
          return 'silent doautocmd BufNewFile|echo ' . string(error)
        endif
      elseif b:fugitive_type !~# '^\%(tag\|commit\|tree\|blob\)$'
        return "echoerr ".string("fugitive: unrecognized git type '".b:fugitive_type."'")
      endif
      if !exists('b:fugitive_display_format') && b:fugitive_type != 'blob'
        let b:fugitive_display_format = +getbufvar('#','fugitive_display_format')
      endif
    endif

    if b:fugitive_type !=# 'blob'
      setlocal nomodeline
    endif

    setlocal noreadonly modifiable
    let pos = getpos('.')
    silent keepjumps %delete_
    setlocal endofline

    try
      silent doautocmd BufReadPre
      if b:fugitive_type ==# 'tree'
        let b:fugitive_display_format = b:fugitive_display_format % 2
        if b:fugitive_display_format
          call s:ReplaceCmd([dir, 'ls-tree', exists('sha') ? sha : rev])
        else
          if !exists('sha')
            let sha = s:TreeChomp(dir, 'rev-parse', '--verify', rev, '--')
          endif
          call s:ReplaceCmd([dir, 'show', '--no-color', sha])
        endif
      elseif b:fugitive_type ==# 'tag'
        let b:fugitive_display_format = b:fugitive_display_format % 2
        if b:fugitive_display_format
          call s:ReplaceCmd([dir, 'cat-file', b:fugitive_type, rev])
        else
          call s:ReplaceCmd([dir, 'cat-file', '-p', rev])
        endif
      elseif b:fugitive_type ==# 'commit'
        let b:fugitive_display_format = b:fugitive_display_format % 2
        if b:fugitive_display_format
          call s:ReplaceCmd([dir, 'cat-file', b:fugitive_type, rev])
        else
          call s:ReplaceCmd([dir, 'show', '--no-color', '-m', '--first-parent', '--pretty=format:tree%x20%T%nparent%x20%P%nauthor%x20%an%x20<%ae>%x20%ad%ncommitter%x20%cn%x20<%ce>%x20%cd%nencoding%x20%e%n%n%s%n%n%b', rev])
          keepjumps call search('^parent ')
          if getline('.') ==# 'parent '
            silent keepjumps delete_
          else
            silent exe (exists(':keeppatterns') ? 'keeppatterns' : '') 'keepjumps s/\m\C\%(^parent\)\@<! /\rparent /e' . (&gdefault ? '' : 'g')
          endif
          keepjumps let lnum = search('^encoding \%(<unknown>\)\=$','W',line('.')+3)
          if lnum
            silent keepjumps delete_
          end
          silent exe (exists(':keeppatterns') ? 'keeppatterns' : '') 'keepjumps 1,/^diff --git\|\%$/s/\r$//e'
          keepjumps 1
        endif
      elseif b:fugitive_type ==# 'stage'
        call s:ReplaceCmd([dir, 'ls-files', '--stage'])
      elseif b:fugitive_type ==# 'blob'
        call s:ReplaceCmd([dir, 'cat-file', b:fugitive_type, rev])
      endif
    finally
      keepjumps call setpos('.',pos)
      setlocal nomodified noswapfile
      let modifiable = rev =~# '^:.:' && b:fugitive_type !=# 'tree'
      let &l:readonly = !modifiable || !filewritable(fugitive#Find('.git/index', dir))
      if empty(&bufhidden)
        setlocal bufhidden=delete
      endif
      let &l:modifiable = modifiable
      if b:fugitive_type !=# 'blob'
        setlocal filetype=git foldmethod=syntax
        call s:Map('n', 'a', ":<C-U>let b:fugitive_display_format += v:count1<Bar>exe fugitive#BufReadCmd(@%)<CR>", '<silent>')
        call s:Map('n', 'i', ":<C-U>let b:fugitive_display_format -= v:count1<Bar>exe fugitive#BufReadCmd(@%)<CR>", '<silent>')
      endif
      call fugitive#MapJumps()
    endtry

    setlocal modifiable
    return 'silent ' . s:DoAutocmd('BufReadPost') .
          \ (modifiable ? '' : '|setl nomodifiable')
  catch /^fugitive:/
    return 'echoerr ' . string(v:exception)
  endtry
endfunction

function! fugitive#BufWriteCmd(...) abort
  return fugitive#FileWriteCmd(a:0 ? a:1 : expand('<amatch>'), 1)
endfunction

function! fugitive#SourceCmd(...) abort
  let amatch = a:0 ? a:1 : expand('<amatch>')
  let temp = s:BlobTemp(amatch)
  if empty(temp)
    return 'noautocmd source ' . s:fnameescape(amatch)
  endif
  if !exists('g:virtual_scriptnames')
    let g:virtual_scriptnames = {}
  endif
  let g:virtual_scriptnames[temp] = amatch
  return 'source ' . s:fnameescape(temp)
endfunction

" Section: Temp files

if !exists('s:temp_files')
  let s:temp_files = {}
endif

function! s:TempState(...) abort
  return get(s:temp_files, s:cpath(fnamemodify(a:0 ? a:1 : @%, ':p')), {})
endfunction

function! s:TempReadPre(file) abort
  if has_key(s:temp_files, s:cpath(a:file))
    let dict = s:temp_files[s:cpath(a:file)]
    setlocal nomodeline
    setlocal bufhidden=delete nobuflisted
    setlocal buftype=nowrite
    if has_key(dict, 'modifiable')
      let &l:modifiable = dict.modifiable
    endif
    if len(dict.dir)
      let b:git_dir = dict.dir
      call extend(b:, {'fugitive_type': 'temp'}, 'keep')
    endif
  endif
endfunction

function! s:TempReadPost(file) abort
  if has_key(s:temp_files, s:cpath(a:file))
    let dict = s:temp_files[s:cpath(a:file)]
    if has_key(dict, 'filetype') && dict.filetype !=# &l:filetype
      let &l:filetype = dict.filetype
    endif
    setlocal foldmarker=<<<<<<<,>>>>>>>
    if empty(mapcheck('q', 'n'))
      nnoremap <buffer> <silent> q    :<C-U>bdelete<Bar>echohl WarningMsg<Bar>echo "Temp file q is deprecated in favor of the built-in <Lt>C-W>q"<Bar>echohl NONE<CR>
    endif
    if !&modifiable
      call s:Map('n', 'gq', ":<C-U>bdelete<CR>", '<silent> <unique>')
    endif
  endif
  return ''
endfunction

augroup fugitive_temp
  autocmd!
  autocmd BufReadPre  * exe s:TempReadPre( expand('<amatch>:p'))
  autocmd BufReadPost * exe s:TempReadPost(expand('<amatch>:p'))
augroup END

" Section: :Git

function! fugitive#Command(line1, line2, range, bang, mods, arg) abort
  let dir = s:Dir()
  let [args, after] = s:SplitExpandChain(a:arg, s:Tree(dir))
  if empty(args)
    let cmd = s:StatusCommand(a:line1, a:line2, a:range, a:line2, a:bang, a:mods, '', '', [])
    return (empty(cmd) ? 'exe' : cmd) . after
  endif
  let alias = get(s:Aliases(dir), args[0], '!')
  if get(args, 1, '') !=# '--help' && alias !~# '^!\|[\"'']' && !filereadable(s:ExecPath() . '/git-' . args[0])
        \ && !(has('win32') && filereadable(s:ExecPath() . '/git-' . args[0] . '.exe'))
    call remove(args, 0)
    call extend(args, split(alias, '\s\+'), 'keep')
  endif
  let name = substitute(args[0], '\%(^\|-\)\(\l\)', '\u\1', 'g')
  if exists('*s:' . name . 'Subcommand') && get(args, 1, '') !=# '--help'
    try
      exe s:DirCheck(dir)
      return 'exe ' . string(s:{name}Subcommand(a:line1, a:line2, a:range, a:bang, a:mods, args[1:-1])) . after
    catch /^fugitive:/
      return 'echoerr ' . string(v:exception)
    endtry
  endif
  if a:bang || args[0] =~# '^-P$\|^--no-pager$\|diff\%(tool\)\@!\|log\|^show$' ||
        \ (args[0] ==# 'stash' && get(args, 1, '') ==# 'show') ||
        \ (args[0] ==# 'help' || get(args, 1, '') ==# '--help') && !s:HasOpt(args, '--web')
    return s:OpenExec((a:line2 > 0 ? a:line2 : '') . (a:line2 ? 'split' : 'edit'), a:mods, args, dir) . after
  endif
  if s:HasOpt(args, ['add', 'checkout', 'commit', 'stage', 'stash', 'reset'], '-p', '--patch') ||
        \ s:HasOpt(args, ['add', 'clean', 'stage'], '-i', '--interactive') ||
        \ index(['--paginate', '-p'], args[0]) >= 0
    let mods = substitute(s:Mods(a:mods), '\<tab\>', '-tab', 'g')
    let assign = len(dir) ? '|let b:git_dir = ' . string(dir) : ''
    if has('nvim')
      if &autowrite || &autowriteall | silent! wall | endif
      return mods . (a:line2 ? 'split' : 'edit') . ' term://' . s:fnameescape(s:UserCommand(dir, args)) . assign . '|startinsert' . after
    elseif has('terminal')
      if &autowrite || &autowriteall | silent! wall | endif
      return 'exe ' . string(mods . 'terminal ' . (a:line2 ? '' : '++curwin ') . join(map(s:UserCommandList(dir) + args, 's:fnameescape(v:val)'))) . assign . after
    endif
  endif
  if has('gui_running') && !has('win32')
    call insert(args, '--no-pager')
  endif
  let pre = ''
  if has('nvim') && executable('env')
    let pre .= 'env GIT_TERMINAL_PROMPT=0 '
  endif
  return 'exe ' . string('noautocmd !' . escape(pre . s:UserCommand(dir, args), '!#%')) .
        \ '|call fugitive#ReloadStatus(' . string(dir) . ', 1)' .
        \ after
endfunction

let s:exec_paths = {}
function! s:ExecPath() abort
  if !has_key(s:exec_paths, g:fugitive_git_executable)
    let s:exec_paths[g:fugitive_git_executable] = s:sub(system(g:fugitive_git_executable.' --exec-path'),'\n$','')
  endif
  return s:exec_paths[g:fugitive_git_executable]
endfunction

function! s:Subcommands() abort
  let exec_path = s:ExecPath()
  return map(split(glob(exec_path.'/git-*'),"\n"),'s:sub(v:val[strlen(exec_path)+5 : -1],"\\.exe$","")')
endfunction

let s:aliases = {}
function! s:Aliases(dir) abort
  if !has_key(s:aliases, a:dir)
    let s:aliases[a:dir] = {}
    let lines = s:NullError([a:dir, 'config', '-z', '--get-regexp', '^alias[.]'])[0]
    for line in lines
      let s:aliases[a:dir][matchstr(line, '\.\zs.\{-}\ze\n')] = matchstr(line, '\n\zs.*')
    endfor
  endif
  return s:aliases[a:dir]
endfunction

function! fugitive#Complete(lead, ...) abort
  let dir = a:0 == 1 ? a:1 : a:0 == 3 ? a:3 : s:Dir()
  let pre = a:0 > 1 ? strpart(a:1, 0, a:2) : ''
  let subcmd = matchstr(pre, '\u\w*[! ] *\zs[[:alnum:]-]\+\ze ')
  if empty(subcmd)
    let results = sort(s:Subcommands() + keys(s:Aliases(dir)))
  elseif pre =~# ' -- '
    return fugitive#CompletePath(a:lead, dir)
  elseif a:lead =~# '^-'
    let results = split(s:ChompDefault('', dir, subcmd, '--git-completion-helper'), ' ')
  else
    return fugitive#CompleteObject(a:lead, dir)
  endif
  return filter(results, 'strpart(v:val, 0, strlen(a:lead)) ==# a:lead')
endfunction

" Section: :Gcd, :Glcd

function! fugitive#CdComplete(A, L, P) abort
  return filter(fugitive#CompletePath(a:A), 'v:val =~# "/$"')
endfunction

function! fugitive#Cd(path, ...) abort
  let path = substitute(a:path, '^:/:\=\|^:(\%(top\|top,literal\|literal,top\|literal\))', '', '')
  if path !~# '^/\|^\a\+:\|^\.\.\=\%(/\|$\)'
    let dir = s:Dir()
    exe s:DirCheck(dir)
    let path = (empty(s:Tree(dir)) ? dir : s:Tree(dir)) . '/' . path
  endif
  return (a:0 && a:1 ? 'lcd ' : 'cd ') . s:fnameescape(FugitiveVimPath(path))
endfunction

" Section: :Gstatus

function! s:StatusCommand(line1, line2, range, count, bang, mods, reg, arg, args, ...) abort
  let dir = a:0 ? a:1 : s:Dir()
  exe s:DirCheck(dir)
  try
    let mods = s:Mods(a:mods, &splitbelow ? 'botright' : 'topleft')
    let file = fugitive#Find(':', dir)
    let arg = ' +setl\ foldmethod=syntax\ foldlevel=1\|let\ w:fugitive_status=FugitiveGitDir() ' .
          \ s:fnameescape(file)
    for winnr in range(1, winnr('$'))
      if s:cpath(file, fnamemodify(bufname(winbufnr(winnr)), ':p'))
        if winnr == winnr()
          call s:ReloadStatus()
        else
          call s:ExpireStatus(dir)
          exe winnr . 'wincmd w'
        endif
        let w:fugitive_status = dir
        1
        return ''
      endif
    endfor
    if a:count ==# 0
      return mods . 'edit' . (a:bang ? '!' : '') . arg
    elseif a:bang
      return mods . 'pedit' . arg . '|wincmd P'
    else
      return mods . (a:count > 0 ? a:count : '') . 'split' . arg
    endif
  catch /^fugitive:/
    return 'echoerr ' . string(v:exception)
  endtry
  return ''
endfunction

function! s:StageJump(offset, section, ...) abort
  let line = search('^\%(' . a:section . '\)', 'nw')
  if !line && a:0
    let line = search('^\%(' . a:1 . '\)', 'nw')
  endif
  if line
    exe line
    if a:offset
      for i in range(a:offset)
        call search(s:file_commit_pattern . '\|^$', 'W')
        if empty(getline('.')) && a:0 && getline(line('.') + 1) =~# '^\%(' . a:1 . '\)'
          call search(s:file_commit_pattern . '\|^$', 'W')
        endif
        if empty(getline('.'))
          return ''
        endif
      endfor
      call s:StageReveal()
    else
      call s:StageReveal()
      +
    endif
  endif
  return ''
endfunction

function! s:StageSeek(info, fallback) abort
  let info = a:info
  if empty(info.section)
    return a:fallback
  endif
  let line = search('^' . info.section, 'wn')
  if !line
    for section in get({'Staged': ['Unstaged', 'Untracked'], 'Unstaged': ['Untracked', 'Staged'], 'Untracked': ['Unstaged', 'Staged']}, info.section, [])
      let line = search('^' . section, 'wn')
      if line
        return line + (info.index > 0 ? 1 : 0)
      endif
    endfor
    return 1
  endif
  let i = 0
  while len(getline(line))
    let filename = matchstr(getline(line), '^[A-Z?] \zs.*')
    if len(filename) &&
          \ ((info.filename[-1:-1] ==# '/' && filename[0 : len(info.filename) - 1] ==# info.filename) ||
          \ (filename[-1:-1] ==# '/' && filename ==# info.filename[0 : len(filename) - 1]) ||
          \ filename ==# info.filename)
      if info.offset < 0
        return line
      else
        if getline(line+1) !~# '^@'
          exe s:StageInline('show', line)
        endif
        if getline(line+1) !~# '^@'
          return line
        endif
        let type = info.sigil ==# '-' ? '-' : '+'
        let offset = -1
        while offset < info.offset
          let line += 1
          if getline(line) =~# '^@'
            let offset = +matchstr(getline(line), type . '\zs\d\+') - 1
          elseif getline(line) =~# '^[ ' . type . ']'
            let offset += 1
          elseif getline(line) !~# '^[ @\+-]'
            return line - 1
          endif
        endwhile
        return line
      endif
    endif
    let commit = matchstr(getline(line), '^\%(\%(\x\x\x\)\@!\l\+\s\+\)\=\zs[0-9a-f]\+')
    if len(commit) && commit ==# info.commit
      return line
    endif
    if i ==# info.index
      let backup = line
    endif
    let i += getline(line) !~# '^[ @\+-]'
    let line += 1
  endwhile
  return exists('backup') ? backup : line - 1
endfunction

function! s:DoAutocmdChanged(dir) abort
  let dir = a:dir is# -2 ? '' : FugitiveGitDir(a:dir)
  if empty(dir) || !exists('#User#FugitiveChanged') || exists('g:fugitive_event')
    return ''
  endif
  try
    let g:fugitive_event = dir
    exe s:DoAutocmd('User FugitiveChanged')
  finally
    unlet! g:fugitive_event
    " Force statusline reload with the buffer's Git dir
    let &ro = &ro
  endtry
  return ''
endfunction

function! s:ReloadStatusBuffer(...) abort
  if get(b:, 'fugitive_type', '') !=# 'index'
    return ''
  endif
  let original_lnum = a:0 ? a:1 : line('.')
  let info = s:StageInfo(original_lnum)
  call fugitive#BufReadStatus()
  exe s:StageSeek(info, original_lnum)
  normal! 0
  return ''
endfunction

function! s:ReloadStatus(...) abort
  call s:ExpireStatus(-1)
  call s:ReloadStatusBuffer(a:0 ? a:1 : line('.'))
  exe s:DoAutocmdChanged(-1)
  return ''
endfunction

let s:last_time = reltime()
if !exists('s:last_times')
  let s:last_times = {}
endif

function! s:ExpireStatus(bufnr) abort
  if a:bufnr == -2
    let s:head_cache = {}
    let s:last_time = reltime()
    return ''
  endif
  let dir = s:Dir(a:bufnr)
  if len(dir)
    let s:last_times[s:cpath(dir)] = reltime()
    if has_key(s:head_cache, dir)
      call remove(s:head_cache, dir)
    endif
  endif
  return ''
endfunction

function! FugitiveReloadCheck() abort
  let t = b:fugitive_reltime
  return [t, reltimestr(reltime(s:last_time, t)),
        \ reltimestr(reltime(get(s:last_times, s:cpath(s:Dir()), t), t))]
endfunction

function! s:ReloadWinStatus(...) abort
  if get(b:, 'fugitive_type', '') !=# 'index' || &modified
    return
  endif
  if !exists('b:fugitive_reltime')
    exe s:ReloadStatusBuffer()
    return
  endif
  let t = b:fugitive_reltime
  if reltimestr(reltime(s:last_time, t)) =~# '-\|\d\{10\}\.' ||
        \ reltimestr(reltime(get(s:last_times, s:cpath(s:Dir()), t), t)) =~# '-\|\d\{10\}\.'
    exe s:ReloadStatusBuffer()
  endif
endfunction

function! s:ReloadTabStatus(...) abort
  let mytab = tabpagenr()
  let tab = a:0 ? a:1 : mytab
  for winnr in range(1, tabpagewinnr(tab, '$'))
    if getbufvar(tabpagebuflist(tab)[winnr-1], 'fugitive_type') ==# 'index'
      execute 'tabnext '.tab
      if winnr != winnr()
        execute winnr.'wincmd w'
        let restorewinnr = 1
      endif
      try
        call s:ReloadWinStatus()
      finally
        if exists('restorewinnr')
          unlet restorewinnr
          wincmd p
        endif
        execute 'tabnext '.mytab
      endtry
    endif
  endfor
  unlet! t:fugitive_reload_status
endfunction

function! fugitive#ReloadStatus(...) abort
  call s:ExpireStatus(a:0 ? a:1 : -1)
  if a:0 > 1 ? a:2 : 1
    let t = reltime()
    let t:fugitive_reload_status = t
    for tabnr in exists('*settabvar') ? range(1, tabpagenr('$')) : []
      call settabvar(tabnr, 'fugitive_reload_status', t)
    endfor
    call s:ReloadTabStatus()
    exe s:DoAutocmdChanged(a:0 ? a:1 : -1)
  else
    call s:ReloadWinStatus()
  endif
  return ''
endfunction

function! fugitive#EfmDir(...) abort
  let dir = matchstr(a:0 ? a:1 : &errorformat, '\c,%\\&\%(git\|fugitive\)_\=dir=\zs\%(\\.\|[^,]\)*')
  let dir = substitute(dir, '%%', '%', 'g')
  let dir = substitute(dir, '\\\ze[\,]', '', 'g')
  return dir
endfunction

augroup fugitive_status
  autocmd!
  autocmd BufWritePost         * call fugitive#ReloadStatus(-1, 0)
  autocmd ShellCmdPost,ShellFilterPost * nested call fugitive#ReloadStatus(-2, 0)
  autocmd BufDelete * nested
        \ if getbufvar(+expand('<abuf>'), 'buftype') ==# 'terminal' |
        \   if !empty(FugitiveGitDir(+expand('<abuf>'))) |
        \     call fugitive#ReloadStatus(+expand('<abuf>'), 1) |
        \   else |
        \     call fugitive#ReloadStatus(-2, 0) |
        \  endif |
        \ endif
  autocmd QuickFixCmdPost make,lmake,[cl]file,[cl]getfile nested
        \ call fugitive#ReloadStatus(fugitive#EfmDir(), 1)
  if !has('win32')
    autocmd FocusGained        * call fugitive#ReloadStatus(-2, 0)
  endif
  autocmd BufEnter index,index.lock
        \ call s:ReloadWinStatus()
  autocmd TabEnter *
        \ if exists('t:fugitive_reload_status') |
        \    call s:ReloadTabStatus() |
        \ endif
augroup END

function! s:StageInfo(...) abort
  let lnum = a:0 ? a:1 : line('.')
  let sigil = matchstr(getline(lnum), '^[ @\+-]')
  let offset = -1
  if len(sigil)
    let type = sigil ==# '-' ? '-' : '+'
    while lnum > 0 && getline(lnum) !~# '^@'
      if getline(lnum) =~# '^[ '.type.']'
        let offset += 1
      endif
      let lnum -= 1
    endwhile
    let offset += matchstr(getline(lnum), type.'\zs\d\+')
    while getline(lnum) =~# '^[ @\+-]'
      let lnum -= 1
    endwhile
  endif
  let slnum = lnum + 1
  let section = ''
  let index = 0
  while len(getline(slnum - 1)) && empty(section)
    let slnum -= 1
    let section = matchstr(getline(slnum), '^\u\l\+\ze.* (\d\+)$')
    if empty(section) && getline(slnum) !~# '^[ @\+-]'
      let index += 1
    endif
  endwhile
  let text = matchstr(getline(lnum), '^[A-Z?] \zs.*')
  return {'section': section,
        \ 'heading': getline(slnum),
        \ 'sigil': sigil,
        \ 'offset': offset,
        \ 'filename': text,
        \ 'relative': reverse(split(text, ' -> ')),
        \ 'paths': map(reverse(split(text, ' -> ')), 's:Tree() . "/" . v:val'),
        \ 'commit': matchstr(getline(lnum), '^\%(\%(\x\x\x\)\@!\l\+\s\+\)\=\zs[0-9a-f]\{4,\}\ze '),
        \ 'status': matchstr(getline(lnum), '^[A-Z?]\ze \|^\%(\x\x\x\)\@!\l\+\ze [0-9a-f]'),
        \ 'sub': get(get(get(b:fugitive_files, section, {}), text, {}), 'sub', ''),
        \ 'index': index}
endfunction

function! s:Selection(arg1, ...) abort
  if a:arg1 ==# 'n'
    let arg1 = line('.')
    let arg2 = -v:count
  elseif a:arg1 ==# 'v'
    let arg1 = line("'<")
    let arg2 = line("'>")
  else
    let arg1 = a:arg1
    let arg2 = a:0 ? a:1 : 0
  endif
  let first = arg1
  if arg2 < 0
    let last = first - arg2 - 1
  elseif arg2 > 0
    let last = arg2
  else
    let last = first
  endif
  while getline(first) =~# '^$\|^[A-Z][a-z]'
    let first += 1
  endwhile
  if first > last || &filetype !=# 'fugitive'
    return []
  endif
  let flnum = first
  while getline(flnum) =~# '^[ @\+-]'
    let flnum -= 1
  endwhile
  let slnum = flnum + 1
  let section = ''
  let index = 0
  while len(getline(slnum - 1)) && empty(section)
    let slnum -= 1
    let heading = matchstr(getline(slnum), '^\u\l\+.* (\d\+)$')
    if empty(heading) && getline(slnum) !~# '^[ @\+-]'
      let index += 1
    endif
  endwhile
  let results = []
  let template = {
        \ 'heading': heading,
        \ 'section': matchstr(heading, '^\u\l\+\ze.* (\d\+)$'),
        \ 'filename': '',
        \ 'relative': [],
        \ 'paths': [],
        \ 'commit': '',
        \ 'status': '',
        \ 'patch': 0,
        \ 'index': index}
  let line = getline(flnum)
  let lnum = first - (arg1 == flnum ? 0 : 1)
  let root = s:Tree() . '/'
  while lnum <= last
    if line =~# '^\u\l\+\ze.* (\d\+)$'
      let template.heading = getline(lnum)
      let template.section = matchstr(template.heading, '^\u\l\+\ze.* (\d\+)$')
      let template.index = 0
    elseif line =~# '^[ @\+-]'
      let template.index -= 1
      if !results[-1].patch
        let results[-1].patch = lnum
      endif
      let results[-1].lnum = lnum
    elseif line =~# '^[A-Z?] '
      let filename = matchstr(line, '^[A-Z?] \zs.*')
      call add(results, extend(deepcopy(template), {
            \ 'lnum': lnum,
            \ 'filename': filename,
            \ 'relative': reverse(split(filename, ' -> ')),
            \ 'paths': map(reverse(split(filename, ' -> ')), 'root . v:val'),
            \ 'status': matchstr(line, '^[A-Z?]'),
            \ }))
    elseif line =~# '^\x\x\x\+ '
      call add(results, extend({
            \ 'lnum': lnum,
            \ 'commit': matchstr(line, '^\x\x\x\+'),
            \ }, template, 'keep'))
    elseif line =~# '^\l\+ \x\x\x\+ '
      call add(results, extend({
            \ 'lnum': lnum,
            \ 'commit': matchstr(line, '^\l\+ \zs\x\x\x\+'),
            \ 'status': matchstr(line, '^\l\+'),
            \ }, template, 'keep'))
    endif
    let lnum += 1
    let template.index += 1
    let line = getline(lnum)
  endwhile
  if len(results) && results[0].patch && arg2 == 0
    while getline(results[0].patch) =~# '^[ \+-]'
      let results[0].patch -= 1
    endwhile
    while getline(results[0].lnum + 1) =~# '^[ \+-]'
      let results[0].lnum += 1
    endwhile
  endif
  return results
endfunction

function! s:StageArgs(visual) abort
  let commits = []
  let paths = []
  for record in s:Selection(a:visual ? 'v' : 'n')
    if len(record.commit)
      call add(commits, record.commit)
    endif
    call extend(paths, record.paths)
  endfor
  if s:cpath(s:Tree(), getcwd())
    call map(paths, 'fugitive#Path(v:val, "./")')
  endif
  return join(map(commits + paths, 's:fnameescape(v:val)'), ' ')
endfunction

function! s:Do(action, visual) abort
  let line = getline('.')
  let reload = 0
  if !a:visual && !v:count && line =~# '^[A-Z][a-z]'
    let header = matchstr(line, '^\S\+\ze:')
    if len(header) && exists('*s:Do' . a:action . header . 'Header')
      let reload = s:Do{a:action}{header}Header(matchstr(line, ': \zs.*')) > 0
    else
      let section = matchstr(line, '^\S\+')
      if exists('*s:Do' . a:action . section . 'Heading')
        let reload = s:Do{a:action}{section}Heading(line) > 0
      endif
    endif
    return reload ? s:ReloadStatus() : ''
  endif
  let selection = s:Selection(a:visual ? 'v' : 'n')
  if empty(selection)
    return ''
  endif
  call filter(selection, 'v:val.section ==# selection[0].section')
  let status = 0
  let err = ''
  try
    for record in selection
      if exists('*s:Do' . a:action . record.section)
        let status = s:Do{a:action}{record.section}(record)
      else
        continue
      endif
      if !status
        return ''
      endif
      let reload = reload || (status > 0)
    endfor
    if status < 0
      execute record.lnum + 1
    endif
    let success = 1
  catch /^fugitive:/
    return 'echoerr ' . string(v:exception)
  finally
    if reload
      execute s:ReloadStatus()
    endif
    if exists('success')
      call s:StageReveal()
    endif
  endtry
  return ''
endfunction

function! s:StageReveal() abort
  exe 'normal! zv'
  let begin = line('.')
  if getline(begin) =~# '^@'
    let end = begin + 1
    while getline(end) =~# '^[ \+-]'
      let end += 1
    endwhile
  elseif getline(begin) =~# '^commit '
    let end = begin
    while end < line('$') && getline(end + 1) !~# '^commit '
      let end += 1
    endwhile
  elseif getline(begin) =~# s:section_pattern
    let end = begin
    while len(getline(end + 1))
      let end += 1
    endwhile
  endif
  if exists('end')
    while line('.') > line('w0') + &scrolloff && end > line('w$')
      execute "normal! \<C-E>"
    endwhile
  endif
endfunction

let s:file_pattern = '^[A-Z?] .\|^diff --'
let s:file_commit_pattern = s:file_pattern . '\|^\%(\l\{3,\} \)\=[0-9a-f]\{4,\} '
let s:item_pattern = s:file_commit_pattern . '\|^@@'

function! s:NextHunk(count) abort
  if &filetype ==# 'fugitive' && getline('.') =~# s:file_pattern
    exe s:StageInline('show')
  endif
  for i in range(a:count)
    if &filetype ==# 'fugitive'
      call search(s:file_pattern . '\|^@', 'W')
      if getline('.') =~# s:file_pattern
        exe s:StageInline('show')
        if getline(line('.') + 1) =~# '^@'
          +
        endif
      endif
    else
      call search('^@@', 'W')
    endif
  endfor
  call s:StageReveal()
  return '.'
endfunction

function! s:PreviousHunk(count) abort
  for i in range(a:count)
    if &filetype ==# 'fugitive'
      let lnum = search(s:file_pattern . '\|^@','Wbn')
      call s:StageInline('show', lnum)
      call search('^? .\|^@','Wb')
    else
      call search('^@@', 'Wb')
    endif
  endfor
  call s:StageReveal()
  return '.'
endfunction

function! s:NextFile(count) abort
  for i in range(a:count)
    exe s:StageInline('hide')
    if !search(s:file_pattern, 'W')
      break
    endif
  endfor
  exe s:StageInline('hide')
  return '.'
endfunction

function! s:PreviousFile(count) abort
  exe s:StageInline('hide')
  for i in range(a:count)
    if !search(s:file_pattern, 'Wb')
      break
    endif
    exe s:StageInline('hide')
  endfor
  return '.'
endfunction

function! s:NextItem(count) abort
  for i in range(a:count)
    if !search(s:item_pattern, 'W') && getline('.') !~# s:item_pattern
      call search('^commit ', 'W')
    endif
  endfor
  call s:StageReveal()
  return '.'
endfunction

function! s:PreviousItem(count) abort
  for i in range(a:count)
    if !search(s:item_pattern, 'Wbe') && getline('.') !~# s:item_pattern
      call search('^commit ', 'Wbe')
    endif
  endfor
  call s:StageReveal()
  return '.'
endfunction

let s:section_pattern = '^[A-Z][a-z][^:]*$'
let s:section_commit_pattern = s:section_pattern . '\|^commit '

function! s:NextSection(count) abort
  let orig = line('.')
  if getline('.') !~# '^commit '
    -
  endif
  for i in range(a:count)
    if !search(s:section_commit_pattern, 'W')
      break
    endif
  endfor
  if getline('.') =~# s:section_commit_pattern
    call s:StageReveal()
    return getline('.') =~# s:section_pattern ? '+' : ':'
  else
    return orig
  endif
endfunction

function! s:PreviousSection(count) abort
  let orig = line('.')
  if getline('.') !~# '^commit '
    -
  endif
  for i in range(a:count)
    if !search(s:section_commit_pattern . '\|\%^', 'bW')
      break
    endif
  endfor
  if getline('.') =~# s:section_commit_pattern || line('.') == 1
    call s:StageReveal()
    return getline('.') =~# s:section_pattern ? '+' : ':'
  else
    return orig
  endif
endfunction

function! s:NextSectionEnd(count) abort
  +
  if empty(getline('.'))
    +
  endif
  for i in range(a:count)
    if !search(s:section_commit_pattern, 'W')
      return '$'
    endif
  endfor
  return search('^.', 'Wb')
endfunction

function! s:PreviousSectionEnd(count) abort
  let old = line('.')
  for i in range(a:count)
    if search(s:section_commit_pattern, 'Wb') <= 1
      exe old
      if i
        break
      else
        return ''
      endif
    endif
    let old = line('.')
  endfor
  return search('^.', 'Wb')
endfunction

function! s:PatchSearchExpr(reverse) abort
  let line = getline('.')
  if col('.') ==# 1 && line =~# '^[+-]'
    if line =~# '^[+-]\{3\} '
      let pattern = '^[+-]\{3\} ' . substitute(escape(strpart(line, 4), '^$.*[]~\'), '^\w/', '\\w/', '') . '$'
    else
      let pattern = '^[+-]\s*' . escape(substitute(strpart(line, 1), '^\s*\|\s*$', '', ''), '^$.*[]~\') . '\s*$'
    endif
    if a:reverse
      return '?' . escape(pattern, '/') . "\<CR>"
    else
      return '/' . escape(pattern, '/?') . "\<CR>"
    endif
  endif
  return a:reverse ? '#' : '*'
endfunction

function! s:StageInline(mode, ...) abort
  if &filetype !=# 'fugitive'
    return ''
  endif
  let lnum1 = a:0 ? a:1 : line('.')
  let lnum = lnum1 + 1
  if a:0 > 1 && a:2 == 0
    let info = s:StageInfo(lnum - 1)
    if empty(info.paths) && len(info.section)
      while len(getline(lnum))
        let lnum += 1
      endwhile
    endif
  elseif a:0 > 1
    let lnum += a:2 - 1
  endif
  while lnum > lnum1
    let lnum -= 1
    while lnum > 0 && getline(lnum) =~# '^[ @\+-]'
      let lnum -= 1
    endwhile
    let info = s:StageInfo(lnum)
    if !has_key(b:fugitive_diff, info.section)
      continue
    endif
    if getline(lnum + 1) =~# '^[ @\+-]'
      let lnum2 = lnum + 1
      while getline(lnum2 + 1) =~# '^[ @\+-]'
        let lnum2 += 1
      endwhile
      if a:mode !=# 'show'
        setlocal modifiable noreadonly
        exe 'silent keepjumps ' . (lnum + 1) . ',' . lnum2 . 'delete _'
        call remove(b:fugitive_expanded[info.section], info.filename)
        setlocal nomodifiable readonly nomodified
      endif
      continue
    endif
    if !has_key(b:fugitive_diff, info.section) || info.status !~# '^[ADMRU]$' || a:mode ==# 'hide'
      continue
    endif
    let mode = ''
    let diff = []
    let index = 0
    let start = -1
    for line in b:fugitive_diff[info.section]
      if mode ==# 'await' && line[0] ==# '@'
        let mode = 'capture'
      endif
      if mode !=# 'head' && line !~# '^[ @\+-]'
        if len(diff)
          break
        endif
        let start = index
        let mode = 'head'
      elseif mode ==# 'head' && substitute(line, "\t$", '', '') ==# '--- ' . info.relative[-1]
        let mode = 'await'
      elseif mode ==# 'head' && substitute(line, "\t$", '', '') ==# '+++ ' . info.relative[0]
        let mode = 'await'
      elseif mode ==# 'capture'
        call add(diff, line)
      elseif line[0] ==# '@'
        let mode = ''
      endif
      let index += 1
    endfor
    if len(diff)
      setlocal modifiable noreadonly
      silent call append(lnum, diff)
      let b:fugitive_expanded[info.section][info.filename] = [start, len(diff)]
      setlocal nomodifiable readonly nomodified
    endif
  endwhile
  return lnum
endfunction

function! s:NextExpandedHunk(count) abort
  for i in range(a:count)
    call s:StageInline('show', line('.'), 1)
    call search(s:file_pattern . '\|^@','W')
  endfor
  return '.'
endfunction

function! s:StageDiff(diff) abort
  let lnum = line('.')
  let info = s:StageInfo(lnum)
  let prefix = info.offset > 0 ? '+' . info.offset : ''
  if info.sub =~# '^S'
    if info.section ==# 'Staged'
      return 'Git! diff --no-ext-diff --submodule=log --cached -- ' . info.paths[0]
    elseif info.sub =~# '^SC'
      return 'Git! diff --no-ext-diff --submodule=log -- ' . info.paths[0]
    else
      return 'Git! diff --no-ext-diff --submodule=diff -- ' . info.paths[0]
    endif
  elseif empty(info.paths) && info.section ==# 'Staged'
    return 'Git! diff --no-ext-diff --cached'
  elseif empty(info.paths)
    return 'Git! diff --no-ext-diff'
  elseif len(info.paths) > 1
    execute 'Gedit' . prefix s:fnameescape(':0:' . info.paths[0])
    return a:diff . '! HEAD:'.s:fnameescape(info.paths[1])
  elseif info.section ==# 'Staged' && info.sigil ==# '-'
    execute 'Gedit' prefix s:fnameescape(':0:'.info.paths[0])
    return a:diff . '! :0:%'
  elseif info.section ==# 'Staged'
    execute 'Gedit' prefix s:fnameescape(':0:'.info.paths[0])
    return a:diff . '! @:%'
  elseif info.sigil ==# '-'
    execute 'Gedit' prefix s:fnameescape(':0:'.info.paths[0])
    return a:diff . '! :(top)%'
  else
    execute 'Gedit' prefix s:fnameescape(':(top)'.info.paths[0])
    return a:diff . '!'
  endif
endfunction

function! s:StageDiffEdit() abort
  let info = s:StageInfo(line('.'))
  let arg = (empty(info.paths) ? s:Tree() : info.paths[0])
  if info.section ==# 'Staged'
    return 'Git! diff --no-ext-diff --cached '.s:fnameescape(arg)
  elseif info.status ==# '?'
    call s:TreeChomp('add', '--intent-to-add', '--', arg)
    return s:ReloadStatus()
  else
    return 'Git! diff --no-ext-diff '.s:fnameescape(arg)
  endif
endfunction

function! s:StageApply(info, reverse, extra) abort
  if a:info.status ==# 'R'
    call s:throw('fugitive: patching renamed file not yet supported')
  endif
  let cmd = ['apply', '-p0', '--recount'] + a:extra
  let info = a:info
  let start = info.patch
  let end = info.lnum
  let lines = getline(start, end)
  if empty(filter(copy(lines), 'v:val =~# "^[+-]"'))
    return -1
  endif
  while getline(end) =~# '^[-+ ]'
    let end += 1
    if getline(end) =~# '^[' . (a:reverse ? '+' : '-') . ' ]'
      call add(lines, ' ' . getline(end)[1:-1])
    endif
  endwhile
  while start > 0 && getline(start) !~# '^@'
    let start -= 1
    if getline(start) =~# '^[' . (a:reverse ? '+' : '-') . ' ]'
      call insert(lines, ' ' . getline(start)[1:-1])
    elseif getline(start) =~# '^@'
      call insert(lines, getline(start))
    endif
  endwhile
  if start == 0
    throw 'fugitive: cold not find hunk'
  elseif getline(start) !~# '^@@ '
    throw 'fugitive: cannot apply conflict hunk'
  endif
  let i = b:fugitive_expanded[info.section][info.filename][0]
  let head = []
  while get(b:fugitive_diff[info.section], i, '@') !~# '^@'
    call add(head, b:fugitive_diff[info.section][i])
    let i += 1
  endwhile
  call extend(lines, head, 'keep')
  let temp = tempname()
  call writefile(lines, temp)
  if a:reverse
    call add(cmd, '--reverse')
  endif
  call extend(cmd, ['--', temp])
  let [output, exec_error] = s:ChompError(cmd)
  if !exec_error
    return 1
  endif
  call s:throw(output)
endfunction

function! s:StageDelete(lnum1, lnum2, count) abort
  let restore = []
  let err = ''
  try
    for info in s:Selection(a:lnum1, a:lnum2)
      if empty(info.paths)
        continue
      endif
      let sub = get(get(get(b:fugitive_files, info.section, {}), info.filename, {}), 'sub')
      if sub =~# '^S'
        if info.status ==# 'A'
          continue
        endif
        if info.section ==# 'Staged'
          call s:TreeChomp('reset', '--', info.paths[0])
        endif
        if info.status =~# '[MD]'
          call s:TreeChomp('submodule', 'update', '--', info.paths[0])
          call add(restore, ':Git -C ' . info.relative[0] . ' checkout -')
        endif
        continue
      endif
      if info.status ==# 'D'
        let undo = 'Gremove'
      elseif info.paths[0] =~# '/$'
        let err .= '|echoerr ' . string('fugitive: will not delete directory ' . string(info.relative[0]))
        break
      else
        let undo = 'Gread ' . s:TreeChomp('hash-object', '-w', '--', info.paths[0])[0:10]
      endif
      if info.patch
        call s:StageApply(info, 1, info.section ==# 'Staged' ? ['--index'] : [])
      elseif info.status ==# '?'
        call s:TreeChomp('clean', '-f', '--', info.paths[0])
      elseif a:count == 2
        call s:TreeChomp('checkout', '--ours', '--', info.paths[0])
      elseif a:count == 3
        call s:TreeChomp('checkout', '--theirs', '--', info.paths[0])
      elseif info.status =~# '[ADU]' &&
            \ get(b:fugitive_files[info.section ==# 'Staged' ? 'Unstaged' : 'Staged'], info.filename, {'status': ''}).status =~# '[AU]'
        call s:TreeChomp('checkout', info.section ==# 'Staged' ? '--ours' : '--theirs', '--', info.paths[0])
      elseif info.status ==# 'U'
        call s:TreeChomp('rm', '--', info.paths[0])
      elseif info.status ==# 'A'
        call s:TreeChomp('rm', '-f', '--', info.paths[0])
      elseif info.section ==# 'Unstaged'
        call s:TreeChomp('checkout', '--', info.paths[0])
      else
        call s:TreeChomp('checkout', 'HEAD^{}', '--', info.paths[0])
      endif
      call add(restore, ':Gsplit ' . s:fnameescape(info.relative[0]) . '|' . undo)
    endfor
  catch /^fugitive:/
    let err .= '|echoerr ' . string(v:exception)
  endtry
  if empty(restore)
    return err[1:-1]
  endif
  exe s:ReloadStatus()
  call s:StageReveal()
  if len(restore)
    return 'checktime|redraw|echomsg ' . string('To restore, ' . join(restore, '|')) . err
  else
    return 'checktime|redraw' . err
  endif
endfunction

function! s:StageIgnore(lnum1, lnum2, count) abort
  let paths = []
  for info in s:Selection(a:lnum1, a:lnum2)
    call extend(paths, info.relative)
  endfor
  call map(paths, '"/" . v:val')
  exe 'Gsplit' (a:count ? '.gitignore' : '.git/info/exclude')
  let last = line('$')
  if last == 1 && empty(getline(1))
    call setline(last, paths)
  else
    call append(last, paths)
    exe last + 1
  endif
  return ''
endfunction

function! s:DoToggleHeadHeader(value) abort
  exe 'edit' s:fnameescape(s:Dir())
  call search('\C^index$', 'wc')
endfunction

function! s:DoStageUnpushedHeading(heading) abort
  let remote = matchstr(a:heading, 'to \zs[^/]\+\ze/')
  if empty(remote)
    let remote = '.'
  endif
  let branch = matchstr(a:heading, 'to \%([^/]\+/\)\=\zs\S\+')
  call feedkeys(':Gpush ' . remote . ' ' . 'HEAD:' . branch)
endfunction

function! s:DoToggleUnpushedHeading(heading) abort
  return s:DoStageUnpushedHeading(a:heading)
endfunction

function! s:DoStageUnpushed(record) abort
  let remote = matchstr(a:record.heading, 'to \zs[^/]\+\ze/')
  if empty(remote)
    let remote = '.'
  endif
  let branch = matchstr(a:record.heading, 'to \%([^/]\+/\)\=\zs\S\+')
  call feedkeys(':Gpush ' . remote . ' ' . a:record.commit . ':' . branch)
endfunction

function! s:DoToggleUnpushed(record) abort
  return s:DoStageUnpushed(a:record)
endfunction

function! s:DoUnstageUnpulledHeading(heading) abort
  call feedkeys(':Grebase')
endfunction

function! s:DoToggleUnpulledHeading(heading) abort
  call s:DoUnstageUnpulledHeading(a:heading)
endfunction

function! s:DoUnstageUnpulled(record) abort
  call feedkeys(':Grebase ' . a:record.commit)
endfunction

function! s:DoToggleUnpulled(record) abort
  call s:DoUnstageUnpulled(a:record)
endfunction

function! s:DoUnstageUnpushed(record) abort
  call feedkeys(':Grebase --autosquash ' . a:record.commit . '^')
endfunction

function! s:DoToggleStagedHeading(...) abort
  call s:TreeChomp('reset', '-q')
  return 1
endfunction

function! s:DoUnstageStagedHeading(heading) abort
  return s:DoToggleStagedHeading(a:heading)
endfunction

function! s:DoToggleUnstagedHeading(...) abort
  call s:TreeChomp('add', '-u')
  return 1
endfunction

function! s:DoStageUnstagedHeading(heading) abort
  return s:DoToggleUnstagedHeading(a:heading)
endfunction

function! s:DoToggleUntrackedHeading(...) abort
  call s:TreeChomp('add', '.')
  return 1
endfunction

function! s:DoStageUntrackedHeading(heading) abort
  return s:DoToggleUntrackedHeading(a:heading)
endfunction

function! s:DoToggleStaged(record) abort
  if a:record.patch
    return s:StageApply(a:record, 1, ['--cached'])
  else
    call s:TreeChomp(['reset', '-q', '--'] + a:record.paths)
    return 1
  endif
endfunction

function! s:DoUnstageStaged(record) abort
  return s:DoToggleStaged(a:record)
endfunction

function! s:DoToggleUnstaged(record) abort
  if a:record.patch && a:record.status !=# 'A'
    return s:StageApply(a:record, 0, ['--cached'])
  else
    call s:TreeChomp(['add', '-A', '--'] + a:record.paths)
    return 1
  endif
endfunction

function! s:DoStageUnstaged(record) abort
  return s:DoToggleUnstaged(a:record)
endfunction

function! s:DoUnstageUnstaged(record) abort
  if a:record.status ==# 'A'
    call s:TreeChomp(['reset', '-q', '--'] + a:record.paths)
    return 1
  else
    return -1
  endif
endfunction

function! s:DoToggleUntracked(record) abort
  call s:TreeChomp(['add', '--'] + a:record.paths)
  return 1
endfunction

function! s:DoStageUntracked(record) abort
  return s:DoToggleUntracked(a:record)
endfunction

function! s:StagePatch(lnum1,lnum2) abort
  let add = []
  let reset = []
  let intend = []

  for lnum in range(a:lnum1,a:lnum2)
    let info = s:StageInfo(lnum)
    if empty(info.paths) && info.section ==# 'Staged'
      return 'Git reset --patch'
    elseif empty(info.paths) && info.section ==# 'Unstaged'
      return 'Git add --patch'
    elseif empty(info.paths) && info.section ==# 'Untracked'
      return 'Git add --interactive'
    elseif empty(info.paths)
      continue
    endif
    execute lnum
    if info.section ==# 'Staged'
      let reset += info.relative
    elseif info.section ==# 'Untracked'
      let intend += info.paths
    elseif info.status !~# '^D'
      let add += info.relative
    endif
  endfor
  try
    if !empty(intend)
      call s:TreeChomp(['add', '--intent-to-add', '--'] + intend)
    endif
    if !empty(add)
      execute "Git add --patch -- ".join(map(add,'s:fnameescape(v:val)'))
    endif
    if !empty(reset)
      execute "Git reset --patch -- ".join(map(reset,'s:fnameescape(v:val)'))
    endif
  catch /^fugitive:/
    return 'echoerr ' . string(v:exception)
  endtry
  return s:ReloadStatus()
endfunction

" Section: :Gcommit, :Grevert

function! s:CommitInteractive(line1, line2, range, bang, mods, args, patch) abort
  let status = s:StatusCommand(a:line1, a:line2, a:range, a:line2, a:bang, a:mods, '', '', [])
  let status = len(status) ? status . '|' : ''
  if a:patch
    return status . 'if search("^Unstaged")|exe "normal >"|exe "+"|endif'
  else
    return status . 'if search("^Untracked\\|^Unstaged")|exe "+"|endif'
  endif
endfunction

function! s:CommitSubcommand(line1, line2, range, bang, mods, args, ...) abort
  let mods = substitute(s:Mods(a:mods), '\C\<tab\>', '-tab', 'g')
  let dir = a:0 ? a:1 : s:Dir()
  let tree = s:Tree(dir)
  let msgfile = fugitive#Find('.git/COMMIT_EDITMSG', dir)
  let outfile = tempname()
  try
    if s:winshell()
      let command = 'set GIT_EDITOR=false& '
    else
      let command = 'env GIT_EDITOR=false '
    endif
    let argv = a:args
    let i = 0
    while get(argv, i, '--') !=# '--'
      if argv[i] =~# '^-[apzsneiovq].'
        call insert(argv, argv[i][0:1])
        let argv[i+1] = '-' . argv[i+1][2:-1]
      else
        let i += 1
      endif
    endwhile
    let command .= s:UserCommand(dir, ['commit'] + argv)
    if (&autowrite || &autowriteall) && !a:0
      silent! wall
    endif
    if s:HasOpt(argv, '-i', '--interactive')
      return s:CommitInteractive(a:line1, a:line2, a:range, a:bang, a:mods, argv, 0)
    elseif s:HasOpt(argv, '-p', '--patch')
      return s:CommitInteractive(a:line1, a:line2, a:range, a:bang, a:mods, argv, 1)
    else
      let [error_string, exec_error] = s:TempCmd(outfile, command)
      let errors = split(error_string, "\n")
    endif
    if !has('gui_running')
      redraw!
    endif
    if !exec_error
      echo join(errors, "\n")
      if filereadable(outfile)
        echo join(readfile(outfile), "\n")
      endif
      call fugitive#ReloadStatus(dir, 1)
      return ''
    else
      let error = get(errors,-2,get(errors,-1,'!'))
      if error =~# 'false''\=\.$'
        let i = 0
        while get(argv, i, '--') !=# '--'
          if argv[i] =~# '^\%(-[eips]\|-[CcFm].\+\|--edit\|--interactive\|--patch\|--signoff\|--reedit-message=.*\|--reuse-message=.*\|--file=.*\|--message=.*\)$'
            call remove(argv, i)
          elseif argv[i] =~# '^\%(-[CcFm]\|--reedit-message\|--reuse-message\|--file\|--message\)$'
            call remove(argv, i, i + 1)
          else
            if argv[i] =~# '^--cleanup\>'
              let cleanup = 1
            endif
            let i += 1
          endif
        endwhile
        call insert(argv, '--no-signoff', i)
        call insert(argv, '--no-interactive', i)
        call insert(argv, '--no-edit', i)
        if !exists('cleanup')
          call insert(argv, '--cleanup=strip')
        endif
        call extend(argv, ['-F', msgfile], 'keep')
        if (bufname('%') == '' && line('$') == 1 && getline(1) == '' && !&modified) || a:line2 == 0
          execute mods . 'keepalt edit' s:fnameescape(msgfile)
        elseif s:HasOpt(argv, '-v') || mods =~# '\<tab\>'
          execute mods . 'keepalt -tabedit' s:fnameescape(msgfile)
        else
          execute mods . 'keepalt split' s:fnameescape(msgfile)
        endif
        let b:fugitive_commit_arguments = argv
        setlocal bufhidden=wipe filetype=gitcommit
        return '1'
      elseif empty(errors)
        let out = readfile(outfile)
        echo get(out, -1, '') =~# 'stash\|\d' ? get(out, -2, '') : get(out, -1, '')
        return ''
      else
        echo join(errors, "\n")
        return ''
      endif
    endif
  catch /^fugitive:/
    return 'echoerr ' . string(v:exception)
  finally
    call delete(outfile)
  endtry
endfunction

function! s:RevertSubcommand(line1, line2, range, bang, mods, args) abort
  let dir = s:Dir()
  let no_commit = s:HasOpt(a:args, '-n', '--no-commit', '--no-edit', '--abort', '--continue', '--quit')
  let cmd = s:UserCommand(dir, ['revert'] + (no_commit ? [] : ['-n']) + a:args)
  let [out, exec_error] = s:SystemError(cmd)
  call fugitive#ReloadStatus(dir, 1)
  if no_commit || exec_error
    return 'echo ' . string(substitute(out, "\n$", '', ''))
  endif
  return s:CommitSubcommand(a:line1, a:line2, a:range, a:bang, a:mods, [], dir)
endfunction

function! fugitive#CommitComplete(A, L, P) abort
  if a:A =~# '^--fixup=\|^--squash='
    let commits = s:LinesError(['log', '--pretty=format:%s', '@{upstream}..'])[0]
    let pre = matchstr(a:A, '^--\w*=''\=') . ':/^'
    if pre =~# "'"
      call map(commits, 'pre . string(tr(v:val, "|\"^$*[]", "......."))[1:-1]')
      call filter(commits, 'strpart(v:val, 0, strlen(a:A)) ==# a:A')
      return commits
    else
      return s:FilterEscape(map(commits, 'pre . tr(v:val, "\\ !^$*?[]()''\"`&;<>|#", "....................")'), a:A)
    endif
  else
    return s:CompleteSub('commit', a:A, a:L, a:P, function('fugitive#CompletePath'))
  endif
  return []
endfunction

function! fugitive#RevertComplete(A, L, P) abort
  return s:CompleteSub('revert', a:A, a:L, a:P, function('s:CompleteRevision'))
endfunction

function! s:FinishCommit() abort
  let buf = +expand('<abuf>')
  let args = getbufvar(buf, 'fugitive_commit_arguments')
  if !empty(args)
    call setbufvar(buf, 'fugitive_commit_arguments', [])
    if getbufvar(buf, 'fugitive_commit_rebase')
      call setbufvar(buf, 'fugitive_commit_rebase', 0)
      let s:rebase_continue = s:Dir(buf)
    endif
    return s:CommitSubcommand(-1, -1, 0, 0, '', args, s:Dir(buf))
  endif
  return ''
endfunction

" Section: :Gmerge, :Grebase, :Gpull

function! fugitive#MergeComplete(A, L, P) abort
  return s:CompleteSub('merge', a:A, a:L, a:P, function('s:CompleteRevision'))
endfunction

function! fugitive#RebaseComplete(A, L, P) abort
  return s:CompleteSub('rebase', a:A, a:L, a:P, function('s:CompleteRevision'))
endfunction

function! fugitive#PullComplete(A, L, P) abort
  return s:CompleteSub('pull', a:A, a:L, a:P, function('s:CompleteRemote'))
endfunction

function! s:RebaseSequenceAborter() abort
  if !exists('s:rebase_sequence_aborter')
    let temp = tempname() . '.sh'
    call writefile(
          \ ['#!/bin/sh',
          \ 'echo exec false | cat - "$1" > "$1.fugitive"',
          \ 'mv "$1.fugitive" "$1"'],
          \ temp)
    let s:rebase_sequence_aborter = temp
  endif
  return s:rebase_sequence_aborter
endfunction

function! fugitive#Cwindow() abort
  if &buftype == 'quickfix'
    cwindow
  else
    botright cwindow
    if &buftype == 'quickfix'
      wincmd p
    endif
  endif
endfunction

let s:common_efm = ''
      \ . '%+Egit:%.%#,'
      \ . '%+Eusage:%.%#,'
      \ . '%+Eerror:%.%#,'
      \ . '%+Efatal:%.%#,'
      \ . '%-G%.%#%\e[K%.%#,'
      \ . '%-G%.%#%\r%.%\+'

let s:rebase_abbrevs = {
      \ 'p': 'pick',
      \ 'r': 'reword',
      \ 'e': 'edit',
      \ 's': 'squash',
      \ 'f': 'fixup',
      \ 'x': 'exec',
      \ 'd': 'drop',
      \ 'l': 'label',
      \ 't': 'reset',
      \ 'm': 'merge',
      \ 'b': 'break',
      \ }

function! s:RebaseEdit(cmd, dir) abort
  let rebase_todo = s:fnameescape(fugitive#Find('.git/rebase-merge/git-rebase-todo', a:dir))

  if filereadable(rebase_todo)
    let new = readfile(rebase_todo)
    let sha_length = 0
    let shas = {}

    for i in range(len(new))
      if new[i] =~# '^\l\+\s\+[0-9a-f]\{5,\}\>'
        let sha = matchstr(new[i], '\C\<[a-f0-9]\{5,\}\>')
        if !sha_length
          let sha_length = len(s:TreeChomp(a:dir, 'rev-parse', '--short', sha))
        endif
        let shortened_sha = strpart(sha, 0, sha_length)
        let shas[shortened_sha] = sha
        let new[i] = substitute(new[i], sha, shortened_sha, '')
      endif
    endfor
    call writefile(new, rebase_todo)
  endif
  return a:cmd . ' +setlocal\ bufhidden=wipe\|' . escape('let b:fugitive_rebase_shas = ' . string(shas), ' ') . ' ' . rebase_todo
endfunction

function! s:MergeRebase(cmd, bang, mods, args, ...) abort
  let dir = a:0 ? a:1 : s:Dir()
  let args = a:args
  let mods = s:Mods(a:mods)
  if a:cmd =~# '^rebase' && s:HasOpt(args, '-i', '--interactive')
    let cmd = fugitive#Prepare(dir, '-c', 'sequence.editor=sh ' . s:RebaseSequenceAborter(), 'rebase') . ' ' . s:shellesc(args)
    let out = system(cmd)[0:-2]
    for file in ['end', 'msgnum']
      let file = fugitive#Find('.git/rebase-merge/' . file, dir)
      if !filereadable(file)
        return 'echoerr ' . string("fugitive: " . out)
      endif
      call writefile([readfile(file)[0] - 1], file)
    endfor
    call writefile([], fugitive#Find('.git/rebase-merge/done', dir))
    if a:bang
      return 'exe'
    endif
    return s:RebaseEdit(mods . 'split', dir)
  elseif a:cmd =~# '^rebase' && s:HasOpt(args, '--edit-todo') && filereadable(fugitive#Find('.git/rebase-merge/git-rebase-todo', dir))
    return s:RebaseEdit(mods . 'split', dir)
  elseif a:cmd =~# '^rebase' && s:HasOpt(args, '--continue') && !a:0
    let rdir = fugitive#Find('.git/rebase-merge', dir)
    let exec_error = s:ChompError([dir, 'diff-index', '--cached', '--quiet', 'HEAD', '--'])[1]
    if exec_error && isdirectory(rdir)
      if getfsize(rdir . '/amend') <= 0
        return 'exe ' . string(mods . 'Gcommit -n -F ' . s:fnameescape(rdir .'/message') . ' -e') . '|let b:fugitive_commit_rebase = 1'
      elseif readfile(rdir . '/amend')[0] ==# fugitive#Head(-1, dir)
        return 'exe ' . string(mods . 'Gcommit --amend -n -F ' . s:fnameescape(rdir . '/message') . ' -e') . '|let b:fugitive_commit_rebase = 1'
      endif
    endif
  endif
  let had_merge_msg = filereadable(fugitive#Find('.git/MERGE_MSG', dir))
  let argv = []
  if a:cmd ==# 'pull'
    let argv += s:AskPassArgs(dir) + ['pull', '--progress']
  else
    call add(argv, a:cmd)
  endif
  if !s:HasOpt(args, '--no-edit', '--abort', '-m') && a:cmd !=# 'rebase'
    call add(argv, '--edit')
  endif
  if a:cmd ==# 'rebase' && s:HasOpt(args, '--autosquash') && !s:HasOpt(args, '--interactive', '-i')
    call add(argv, '--interactive')
  endif
  call extend(argv, args)

  let [mp, efm] = [&l:mp, &l:efm]
  try
    let cdback = s:Cd(s:Tree(dir))
    let &l:errorformat = ''
          \ . '%-Gerror:%.%#false''.,'
          \ . '%-G%.%# ''git commit'' %.%#,'
          \ . '%+Emerge:%.%#,'
          \ . s:common_efm . ','
          \ . '%+ECannot %.%#: You have unstaged changes.,'
          \ . '%+ECannot %.%#: Your index contains uncommitted changes.,'
          \ . '%+EThere is no tracking information for the current branch.,'
          \ . '%+EYou are not currently on a branch. Please specify which,'
          \ . '%+I %#git rebase --continue,'
          \ . 'CONFLICT (%m): %f deleted in %.%#,'
          \ . 'CONFLICT (%m): Merge conflict in %f,'
          \ . 'CONFLICT (%m): Rename \"%f\"->%.%#,'
          \ . 'CONFLICT (%m): Rename %.%#->%f %.%#,'
          \ . 'CONFLICT (%m): There is a directory with name %f in %.%#,'
          \ . '%+ECONFLICT %.%#,'
          \ . '%+EKONFLIKT %.%#,'
          \ . '%+ECONFLIT %.%#,'
          \ . "%+EXUNG \u0110\u1ed8T %.%#,"
          \ . "%+E\u51b2\u7a81 %.%#,"
          \ . 'U%\t%f'
    if a:cmd =~# '^merge' && empty(args) &&
          \ (had_merge_msg || isdirectory(fugitive#Find('.git/rebase-apply', dir)) ||
          \  !empty(s:TreeChomp(dir, 'diff-files', '--diff-filter=U')))
      let cmd = g:fugitive_git_executable.' diff-files --name-status --diff-filter=U'
    else
      let cmd = s:UserCommand(dir, argv)
    endif
    if !empty($GIT_SEQUENCE_EDITOR) || has('win32')
      let old_sequence_editor = $GIT_SEQUENCE_EDITOR
      let $GIT_SEQUENCE_EDITOR = 'true'
    else
      let cmd = 'env GIT_SEQUENCE_EDITOR=true ' . cmd
    endif
    if !empty($GIT_EDITOR) || has('win32')
      let old_editor = $GIT_EDITOR
      let $GIT_EDITOR = 'false'
    else
      let cmd = 'env GIT_EDITOR=false ' . substitute(cmd, '^env ', '', '')
    endif
    if !has('patch-8.1.0334') && has('terminal') && &autowrite
      let autowrite_was_set = 1
      set noautowrite
      silent! wall
    endif
    let &l:makeprg = cmd
    silent noautocmd make!
  catch /^Vim\%((\a\+)\)\=:E211/
    let err = v:exception
  finally
    if exists('autowrite_was_set')
      set autowrite
    endif
    redraw!
    let [&l:mp, &l:efm] = [mp, efm]
    if exists('old_editor')
      let $GIT_EDITOR = old_editor
    endif
    if exists('old_sequence_editor')
      let $GIT_SEQUENCE_EDITOR = old_sequence_editor
    endif
    execute cdback
  endtry
  call fugitive#ReloadStatus(dir, 1)
  if empty(filter(getqflist(),'v:val.valid && v:val.type !=# "I"'))
    if a:cmd =~# '^rebase' &&
          \ filereadable(fugitive#Find('.git/rebase-merge/amend', dir)) &&
          \ filereadable(fugitive#Find('.git/rebase-merge/done', dir)) &&
          \ get(readfile(fugitive#Find('.git/rebase-merge/done', dir)), -1, '') =~# '^[^e]'
      cclose
      return 'exe ' . string(mods . 'Gcommit --amend -n -F ' . s:fnameescape(fugitive#Find('.git/rebase-merge/message', dir)) . ' -e') . '|let b:fugitive_commit_rebase = 1'
    elseif !had_merge_msg && filereadable(fugitive#Find('.git/MERGE_MSG', dir))
      cclose
      return mods . 'Gcommit --no-status -n -t '.s:fnameescape(fugitive#Find('.git/MERGE_MSG', dir))
    endif
  endif
  let qflist = getqflist()
  let found = 0
  for e in qflist
    if !empty(e.bufnr)
      let found = 1
      let e.pattern = '^<<<<<<<'
    endif
  endfor
  call fugitive#Cwindow()
  if found
    call setqflist(qflist, 'r')
    if !a:bang
      call s:BlurStatus()
      return 'cfirst'
    endif
  endif
  return exists('err') ? 'echoerr '.string(err) : 'exe'
endfunction

function! s:RebaseClean(file) abort
  if !filereadable(a:file)
    return ''
  endif
  let old = readfile(a:file)
  let new = copy(old)
  for i in range(len(new))
    let new[i] = substitute(new[i], '^\l\>', '\=get(s:rebase_abbrevs,submatch(0),submatch(0))', '')

    let sha = matchstr(new[i], '\C\<[a-f0-9]\{5,\}\>')
    let rebase_shas = getbufvar(a:file, 'fugitive_rebase_shas')
    if len(sha) && type(rebase_shas) == type({}) && has_key(rebase_shas, sha)
      let new[i] = substitute(new[i], '\C\<' . sha . '\>', rebase_shas[sha], '')
    endif
  endfor
  if new !=# old
    call writefile(new, a:file)
  endif
  return ''
endfunction

function! s:MergeSubcommand(line1, line2, range, bang, mods, args) abort
  return s:MergeRebase('merge', a:bang, a:mods, a:args)
endfunction

function! s:RebaseSubcommand(line1, line2, range, bang, mods, args) abort
  return s:MergeRebase('rebase', a:bang, a:mods, a:args)
endfunction

function! s:PullSubcommand(line1, line2, range, bang, mods, args) abort
  return s:MergeRebase('pull', a:bang, a:mods, a:args)
endfunction

augroup fugitive_merge
  autocmd!
  autocmd VimLeavePre,BufDelete git-rebase-todo
        \ if getbufvar(+expand('<abuf>'), '&bufhidden') ==# 'wipe' |
        \   call s:RebaseClean(expand('<afile>')) |
        \   if getfsize(FugitiveFind('.git/rebase-merge/done', +expand('<abuf>'))) == 0 |
        \     let s:rebase_continue = FugitiveGitDir(+expand('<abuf>')) |
        \   endif |
        \ endif
  autocmd BufEnter * nested
        \ if exists('s:rebase_continue') |
        \   exe s:MergeRebase('rebase', 0, '', [getfsize(fugitive#Find('.git/rebase-merge/git-rebase-todo', s:rebase_continue)) > 0 ? '--continue' : '--abort'], remove(s:, 'rebase_continue')) |
        \ endif
augroup END

" Section: :Ggrep, :Glog

if !exists('g:fugitive_summary_format')
  let g:fugitive_summary_format = '%s'
endif

function! fugitive#GrepComplete(A, L, P) abort
  return s:CompleteSub('grep', a:A, a:L, a:P)
endfunction

function! fugitive#LogComplete(A, L, P) abort
  return s:CompleteSub('log', a:A, a:L, a:P)
endfunction

function! s:GrepParseLine(prefix, name_only, dir, line) abort
  let entry = {'valid': 1}
  let match = matchlist(a:line, '^\(.\{-\}\):\(\d\+\):\(\d\+:\)\=\(.*\)$')
  if len(match)
    let entry.module = match[1]
    let entry.lnum = +match[2]
    let entry.col = +match[3]
    let entry.text = match[4]
  elseif a:line =~# '^git: \|^usage: \|^error: \|^fatal: '
    return {'text': a:line}
  else
    let entry.module = matchstr(a:line, '\CBinary file \zs.*\ze matches$')
    if len(entry.module)
      let entry.text = 'Binary file'
      let entry.valid = 0
    endif
  endif
  if empty(entry.module) && a:name_only
    let entry.module = a:line
  endif
  if empty(entry.module)
    return {'text': a:line}
  endif
  if entry.module !~# ':'
    let entry.filename = a:prefix . entry.module
  else
    let entry.filename = fugitive#Find(entry.module, a:dir)
  endif
  return entry
endfunction

function! s:GrepSubcommand(line1, line2, range, bang, mods, args) abort
  let dir = s:Dir()
  exe s:DirCheck(dir)
  let listnr = a:line1 == 0 ? a:line1 : a:line2
  let cmd = ['--no-pager', 'grep', '-n', '--no-color', '--full-name']
  if fugitive#GitVersion(2, 19)
    call add(cmd, '--column')
  endif
  let tree = s:Tree(dir)
  if type(a:args) == type([])
    let [args, after] = [a:args, '']
  else
    let [args, after] = s:SplitExpandChain(a:args, tree)
  endif
  let prefix = FugitiveVimPath(s:HasOpt(args, '--cached') || empty(tree) ? 'fugitive://' . dir . '//0/' : tree . '/')
  let name_only = s:HasOpt(args, '-l', '--files-with-matches', '--name-only', '-L', '--files-without-match')
  let title = [listnr < 0 ? ':Ggrep' : ':Glgrep'] + args
  if listnr > 0
    exe listnr 'wincmd w'
  else
    call s:BlurStatus()
  endif
  redraw
  call s:QuickfixCreate(listnr, {'title': (listnr < 0 ? ':Ggrep ' : ':Glgrep ') . s:fnameescape(args)})
  let tempfile = tempname()
  let event = listnr < 0 ? 'grep-fugitive' : 'lgrep-fugitive'
  silent exe s:DoAutocmd('QuickFixCmdPre ' . event)
  exe '!' . escape(s:UserCommand(dir, cmd + args), '%#!')
        \ printf(&shellpipe . (&shellpipe =~# '%s' ? '' : ' %s'), s:shellesc(tempfile))
  let list = map(readfile(tempfile), 's:GrepParseLine(prefix, name_only, dir, v:val)')
  call s:QuickfixSet(listnr, list, 'a')
  silent exe s:DoAutocmd('QuickFixCmdPost ' . event)
  if !has('gui_running')
    redraw
  endif
  if !a:bang && !empty(list)
    return (listnr < 0 ? 'c' : 'l').'first' . after
  else
    return after[1:-1]
  endif
endfunction

function! s:LogFlushQueue(state) abort
  let queue = remove(a:state, 'queue')
  if a:state.child_found
    call remove(queue, 0)
  endif
  if len(queue) && queue[-1] ==# {'text': ''}
    call remove(queue, -1)
  endif
  return queue
endfunction

function! s:LogParse(state, dir, line) abort
  if a:state.context ==# 'hunk' && a:line =~# '^[-+ ]'
    return []
  endif
  let list = matchlist(a:line, '^\%(fugitive \(.\{-\}\)\t\|commit \|From \)\=\(\x\{40,\}\)\%( \(.*\)\)\=$')
  if len(list)
    let a:state.context = 'commit'
    let a:state.base = 'fugitive://' . a:dir . '//' . list[2]
    let a:state.base_module = len(list[1]) ? list[1] : list[2]
    let a:state.message = list[3]
    if has_key(a:state, 'diffing')
      call remove(a:state, 'diffing')
    endif
    let queue = s:LogFlushQueue(a:state)
    let a:state.queue = [{
          \ 'valid': 1,
          \ 'filename': a:state.base . a:state.target,
          \ 'module': a:state.base_module . substitute(a:state.target, '^/', ':', ''),
          \ 'text': a:state.message}]
    let a:state.child_found = 0
    return queue
  elseif type(a:line) == type(0)
    return s:LogFlushQueue(a:state)
  elseif a:line =~# '^diff'
    let a:state.context = 'diffhead'
  elseif a:line =~# '^[+-]\{3\} \w/' && a:state.context ==# 'diffhead'
    let a:state.diffing = a:line[5:-1]
  elseif a:line =~# '^@@[^@]*+\d' && has_key(a:state, 'diffing') && has_key(a:state, 'base')
    let a:state.context = 'hunk'
    if empty(a:state.target) || a:state.target ==# a:state.diffing
      let a:state.child_found = 1
      call add(a:state.queue, {
            \ 'valid': 1,
            \ 'filename': a:state.base . a:state.diffing,
            \ 'module': a:state.base_module . substitute(a:state.diffing, '^/', ':', ''),
            \ 'lnum': +matchstr(a:line, '+\zs\d\+'),
            \ 'text': a:state.message . matchstr(a:line, ' @@\+ .\+')})
    endif
  elseif a:state.follow &&
        \ a:line =~# '^ \%(mode change \d\|\%(create\|delete\) mode \d\|\%(rename\|copy\|rewrite\) .* (\d\+%)$\)'
    let rename = matchstr(a:line, '^ rename \zs.* => .*\ze (\d\+%)$')
    if len(rename)
      let rename = rename =~# '{.* => .*}' ? rename : '{' . rename . '}'
      if a:state.target ==# simplify('/' . substitute(rename, '{.* => \(.*\)}', '\1', ''))
        let a:state.target = simplify('/' . substitute(rename, '{\(.*\) => .*}', '\1', ''))
      endif
    endif
    if !get(a:state, 'ignore_summary')
      call add(a:state.queue, {'text': a:line})
    endif
  elseif a:state.context ==# 'commit' || a:state.context ==# 'init'
    call add(a:state.queue, {'text': a:line})
  endif
  return []
endfunction

function! fugitive#LogCommand(line1, count, range, bang, mods, args, type) abort
  let dir = s:Dir()
  exe s:DirCheck(dir)
  let listnr = a:type =~# '^l' ? 0 : -1
  let [args, after] = s:SplitExpandChain(a:args, s:Tree(dir))
  let split = index(args, '--')
  if split > 0
    let paths = args[split : -1]
    let args = args[0 : split - 1]
  elseif split == 0
    let paths = args
    let args = []
  else
    let paths = []
  endif
  if a:line1 == 0 && a:count
    let path = fugitive#Path(bufname(a:count), '/', dir)
  elseif a:count >= 0
    let path = fugitive#Path(@%, '/', dir)
  else
     let path = ''
  endif
  let range = ''
  let extra = []
  let state = {'context': 'init', 'child_found': 0, 'queue': [], 'follow': 0}
  if path =~# '^/\.git\%(/\|$\)\|^$'
    let path = ''
  elseif a:line1 == 0
    let range = "0," . (a:count ? a:count : bufnr(''))
    let extra = ['.' . path]
    if (empty(paths) || paths ==# ['--']) && !s:HasOpt(args, '--no-follow')
      let state.follow = 1
      if !s:HasOpt(args, '--follow')
        call insert(args, '--follow')
      endif
      if !s:HasOpt(args, '--summary')
        call insert(args, '--summary')
        let state.ignore_summary = 1
      endif
    endif
  elseif a:count > 0
    if !s:HasOpt(args, '--merges', '--no-merges')
      call insert(args, '--no-merges')
    endif
    call add(args, '-L' . a:line1 . ',' . a:count . ':' . path[1:-1])
  endif
  if len(path) && empty(filter(copy(args), 'v:val =~# "^[^-]"'))
    let owner = s:Owner(@%, dir)
    if len(owner)
      call add(args, owner)
    endif
  endif
  if empty(extra)
    let path = ''
  endif
  if s:HasOpt(args, '-g', '--walk-reflogs')
    let format = "%gd\t%H %gs"
  else
    let format = "%h\t%H " . g:fugitive_summary_format
  endif
  let cmd = ['--no-pager']
  if fugitive#GitVersion(1, 9)
    call extend(cmd, ['-c', 'diff.context=0', '-c', 'diff.noprefix=false', 'log'])
  else
    call extend(cmd, ['log', '-U0', '-s'])
  endif
  call extend(cmd,
        \ ['--no-color', '--no-ext-diff', '--pretty=format:fugitive ' . format] +
        \ args + paths + extra)
  let state.target = path
  let title = (listnr < 0 ? ':Gclog ' : ':Gllog ') . s:fnameescape(args + paths)
  if empty(paths + extra) && empty(a:type) && len(s:Relative('/'))
    let after = '|echohl WarningMsg|echo ' . string('Use :0Glog or :0Gclog for old behavior of targeting current file') . '|echohl NONE' . after
  endif
  return s:QuickfixStream(listnr, title, s:UserCommandList(dir) + cmd, !a:bang, s:function('s:LogParse'), state, dir) . after
endfunction

" Section: :Gedit, :Gpedit, :Gsplit, :Gvsplit, :Gtabedit, :Gread

function! s:UsableWin(nr) abort
  return a:nr && !getwinvar(a:nr, '&previewwindow') && !getwinvar(a:nr, '&winfixwidth') &&
        \ (empty(getwinvar(a:nr, 'fugitive_status')) || getbufvar(winbufnr(a:nr), 'fugitive_type') !=# 'index') &&
        \ index(['gitrebase', 'gitcommit'], getbufvar(winbufnr(a:nr), '&filetype')) < 0 &&
        \ index(['nofile','help','quickfix'], getbufvar(winbufnr(a:nr), '&buftype')) < 0
endfunction

function! s:OpenParse(args, wants_cmd) abort
  let opts = []
  let cmds = []
  let args = copy(a:args)
  while !empty(args)
    if args[0] =~# '^++'
      call add(opts, ' ' . escape(remove(args, 0), ' |"'))
    elseif a:wants_cmd && args[0] =~# '^+'
      call add(cmds, remove(args, 0)[1:-1])
    else
      break
    endif
  endwhile
  if len(args)
    let file = join(args)
  elseif empty(expand('%'))
    let file = ''
  elseif empty(s:DirCommitFile(@%)[1]) && s:Relative('./') !~# '^\./\.git\>'
    let file = '>:0'
  else
    let file = '>'
  endif
  let dir = s:Dir()
  let efile = s:Expand(file)
  let url = fugitive#Find(efile, dir)

  if a:wants_cmd && file[0] ==# '>' && efile[0] !=# '>' && get(b:, 'fugitive_type', '') isnot# 'tree' && &filetype !=# 'netrw'
    let line = line('.')
    if expand('%:p') !=# url
      let diffcmd = 'diff'
      let from = s:DirRev(@%)[1]
      let to = s:DirRev(url)[1]
      if empty(from) && empty(to)
        let diffcmd = 'diff-files'
        let args = ['--', expand('%:p'), url]
      elseif empty(to)
        let args = [from, '--', url]
      elseif empty(from)
        let args = [to, '--', expand('%:p')]
        let reverse = 1
      else
        let args = [from, to]
      endif
      let [res, exec_error] = s:LinesError([dir, diffcmd, '-U0'] + args)
      if !exec_error
        call filter(res, 'v:val =~# "^@@ "')
        call map(res, 'substitute(v:val, ''[-+]\d\+\zs '', ",1 ", "g")')
        call map(res, 'matchlist(v:val, ''^@@ -\(\d\+\),\(\d\+\) +\(\d\+\),\(\d\+\) @@'')[1:4]')
        if exists('reverse')
          call map(res, 'v:val[2:3] + v:val[0:1]')
        endif
        call filter(res, 'v:val[0] < '.line('.'))
        let hunk = get(res, -1, [0,0,0,0])
        if hunk[0] + hunk[1] > line('.')
          let line = hunk[2] + max([1 - hunk[3], 0])
        else
          let line = hunk[2] + max([hunk[3], 1]) + line('.') - hunk[0] - max([hunk[1], 1])
        endif
      endif
    endif
    call insert(cmds, line)
  endif

  let pre = join(opts, '')
  if len(cmds) > 1
    let pre .= ' +' . escape(join(map(cmds, '"exe ".string(v:val)'), '|'), ' |"')
  elseif len(cmds)
    let pre .= ' +' . escape(cmds[0], ' |"')
  endif
  return [url, pre]
endfunction

function! s:DiffClose() abort
  let mywinnr = winnr()
  for winnr in [winnr('#')] + range(winnr('$'),1,-1)
    if winnr != mywinnr && getwinvar(winnr,'&diff')
      execute winnr.'wincmd w'
      close
      if winnr('$') > 1
        wincmd p
      endif
    endif
  endfor
  diffoff!
endfunction

function! s:BlurStatus() abort
  if (&previewwindow || exists('w:fugitive_status')) && get(b:,'fugitive_type', '') ==# 'index'
    let winnrs = filter([winnr('#')] + range(1, winnr('$')), 's:UsableWin(v:val)')
    if len(winnrs)
      exe winnrs[0].'wincmd w'
    else
      belowright new
    endif
    if &diff
      call s:DiffClose()
    endif
  endif
endfunction

function! s:OpenExec(cmd, mods, args, ...) abort
  let dir = a:0 ? s:Dir(a:1) : s:Dir()
  let temp = tempname()
  let columns = get(g:, 'fugitive_columns', 80)
  if columns <= 0
    let env = ''
  elseif s:winshell()
    let env = 'set COLUMNS=' . columns . '& '
  else
    let env = 'env COLUMNS=' . columns . ' '
  endif
  silent! execute '!' . escape(env . s:UserCommand(dir, ['--no-pager'] + a:args), '!#%') .
        \ (&shell =~# 'csh' ? ' >& ' . temp : ' > ' . temp . ' 2>&1')
  redraw!
  let temp = s:Resolve(temp)
  let first = join(readfile(temp, '', 2), "\n")
  if first =~# '\<\([[:upper:][:digit:]_-]\+(\d\+)\).*\1'
    let filetype = 'man'
  else
    let filetype = 'git'
  endif
  let s:temp_files[s:cpath(temp)] = { 'dir': dir, 'filetype': filetype, 'modifiable': first =~# '^diff ' }
  if a:cmd ==# 'edit'
    call s:BlurStatus()
  endif
  silent execute s:Mods(a:mods) . a:cmd temp
  call fugitive#ReloadStatus(dir, 1)
  return 'echo ' . string(':!' . s:UserCommand(dir, a:args))
endfunction

function! fugitive#Open(cmd, bang, mods, arg, args) abort
  if a:bang
    return s:OpenExec(a:cmd, a:mods, s:SplitExpand(a:arg, s:Tree()))
  endif

  let mods = s:Mods(a:mods)
  try
    let [file, pre] = s:OpenParse(a:args, 1)
  catch /^fugitive:/
    return 'echoerr ' . string(v:exception)
  endtry
  if file !~# '^\a\a\+:'
    let file = s:sub(file, '/$', '')
  endif
  if a:cmd ==# 'edit'
    call s:BlurStatus()
  endif
  return mods . a:cmd . pre . ' ' . s:fnameescape(file)
endfunction

function! fugitive#ReadCommand(line1, count, range, bang, mods, arg, args) abort
  let mods = s:Mods(a:mods)
  let after = a:count
  if a:count < 0
    let delete = 'silent 1,' . line('$') . 'delete_|'
    let after = line('$')
  elseif a:range == 2
    let delete = 'silent ' . a:line1 . ',' . a:count . 'delete_|'
  else
    let delete = ''
  endif
  if a:bang
    let dir = s:Dir()
    let args = s:SplitExpand(a:arg, s:Tree(dir))
    silent execute mods . after . 'read!' escape(s:UserCommand(dir, ['--no-pager'] + args), '!#%')
    execute delete . 'diffupdate'
    call fugitive#ReloadStatus(dir, 1)
    return 'redraw|echo '.string(':!'.s:UserCommand(dir, args))
  endif
  try
    let [file, pre] = s:OpenParse(a:args, 0)
  catch /^fugitive:/
    return 'echoerr ' . string(v:exception)
  endtry
  if file =~# '^fugitive:' && after is# 0
    return 'exe ' .string(mods . fugitive#FileReadCmd(file, 0, pre)) . '|diffupdate'
  endif
  if foldlevel(after)
    exe after . 'foldopen!'
  endif
  return mods . after . 'read' . pre . ' ' . s:fnameescape(file) . '|' . delete . 'diffupdate' . (a:count < 0 ? '|' . line('.') : '')
endfunction

function! fugitive#EditComplete(A, L, P) abort
  if a:A =~# '^>'
    return map(s:FilterEscape(s:CompleteHeads(s:Dir()), a:A[1:-1]), "'>' . v:val")
  else
    return fugitive#CompleteObject(a:A, a:L, a:P)
  endif
endfunction

function! fugitive#ReadComplete(A, L, P) abort
  if a:L =~# '^\w\+!'
    return fugitive#Complete(a:A, a:L, a:P)
  else
    return fugitive#EditComplete(a:A, a:L, a:P)
  endif
endfunction

" Section: :Gwrite, :Gwq

function! fugitive#WriteCommand(line1, line2, range, bang, mods, arg, args) abort
  if exists('b:fugitive_commit_arguments')
    return 'write|bdelete'
  elseif expand('%:t') == 'COMMIT_EDITMSG' && $GIT_INDEX_FILE != ''
    return 'wq'
  elseif get(b:, 'fugitive_type', '') ==# 'index'
    return 'Gcommit'
  elseif &buftype ==# 'nowrite' && getline(4) =~# '^+++ '
    let filename = getline(4)[6:-1]
    setlocal buftype=
    silent write
    setlocal buftype=nowrite
    if matchstr(getline(2),'index [[:xdigit:]]\+\.\.\zs[[:xdigit:]]\{7\}') ==# fugitive#RevParse(':0:'.filename)[0:6]
      let [message, exec_error] = s:ChompError(['apply', '--cached', '--reverse', '--', expand('%:p')])
    else
      let [message, exec_error] = s:ChompError(['apply', '--cached', '--', expand('%:p')])
    endif
    if exec_error
      echohl ErrorMsg
      echo message
      echohl NONE
      return ''
    elseif a:bang
      return 'bdelete'
    else
      return 'Gedit '.fnameescape(filename)
    endif
  endif
  let mytab = tabpagenr()
  let mybufnr = bufnr('')
  try
    let file = len(a:args) ? s:Generate(s:Expand(join(a:args, ' '))) : fugitive#Real(@%)
  catch /^fugitive:/
    return 'echoerr ' . string(v:exception)
  endtry
  if empty(file)
    return 'echoerr '.string('fugitive: cannot determine file path')
  endif
  if file =~# '^fugitive:'
    return 'write' . (a:bang ? '! ' : ' ') . s:fnameescape(file)
  endif
  exe s:DirCheck()
  let always_permitted = s:cpath(fugitive#Real(@%), file) && empty(s:DirCommitFile(@%)[1])
  if !always_permitted && !a:bang && (len(s:TreeChomp('diff', '--name-status', 'HEAD', '--', file)) || len(s:TreeChomp('ls-files', '--others', '--', file)))
    let v:errmsg = 'fugitive: file has uncommitted changes (use ! to override)'
    return 'echoerr v:errmsg'
  endif
  let treebufnr = 0
  for nr in range(1,bufnr('$'))
    if fnamemodify(bufname(nr),':p') ==# file
      let treebufnr = nr
    endif
  endfor

  if treebufnr > 0 && treebufnr != bufnr('')
    let temp = tempname()
    silent execute 'keepalt %write '.temp
    for tab in [mytab] + range(1,tabpagenr('$'))
      for winnr in range(1,tabpagewinnr(tab,'$'))
        if tabpagebuflist(tab)[winnr-1] == treebufnr
          execute 'tabnext '.tab
          if winnr != winnr()
            execute winnr.'wincmd w'
            let restorewinnr = 1
          endif
          try
            let lnum = line('.')
            let last = line('$')
            silent execute '$read '.temp
            silent execute '1,'.last.'delete_'
            silent write!
            silent execute lnum
            diffupdate
            let did = 1
          finally
            if exists('restorewinnr')
              wincmd p
            endif
            execute 'tabnext '.mytab
          endtry
          break
        endif
      endfor
    endfor
    if !exists('did')
      call writefile(readfile(temp,'b'),file,'b')
    endif
  else
    execute 'write! '.s:fnameescape(file)
  endif

  if a:bang
    let [error, exec_error] = s:ChompError(['add', '--force', '--', file])
  else
    let [error, exec_error] = s:ChompError(['add', '--', file])
  endif
  if exec_error
    let v:errmsg = 'fugitive: '.error
    return 'echoerr v:errmsg'
  endif
  if s:cpath(fugitive#Real(@%), file) && s:DirCommitFile(@%)[1] =~# '^\d$'
    setlocal nomodified
  endif

  let one = s:Generate(':1:'.file)
  let two = s:Generate(':2:'.file)
  let three = s:Generate(':3:'.file)
  for nr in range(1,bufnr('$'))
    let name = fnamemodify(bufname(nr), ':p')
    if bufloaded(nr) && !getbufvar(nr,'&modified') && (name ==# one || name ==# two || name ==# three)
      execute nr.'bdelete'
    endif
  endfor

  unlet! restorewinnr
  let zero = s:Generate(':0:'.file)
  silent exe s:DoAutocmd('BufWritePost ' . s:fnameescape(zero))
  for tab in range(1,tabpagenr('$'))
    for winnr in range(1,tabpagewinnr(tab,'$'))
      let bufnr = tabpagebuflist(tab)[winnr-1]
      let bufname = fnamemodify(bufname(bufnr), ':p')
      if bufname ==# zero && bufnr != mybufnr
        execute 'tabnext '.tab
        if winnr != winnr()
          execute winnr.'wincmd w'
          let restorewinnr = 1
        endif
        try
          let lnum = line('.')
          let last = line('$')
          silent execute '$read '.s:fnameescape(file)
          silent execute '1,'.last.'delete_'
          silent execute lnum
          setlocal nomodified
          diffupdate
        finally
          if exists('restorewinnr')
            wincmd p
          endif
          execute 'tabnext '.mytab
        endtry
        break
      endif
    endfor
  endfor
  call fugitive#ReloadStatus(-1, 1)
  return 'checktime'
endfunction

function! fugitive#WqCommand(...) abort
  let bang = a:4 ? '!' : ''
  if exists('b:fugitive_commit_arguments')
    return 'wq'.bang
  endif
  let result = call('fugitive#WriteCommand', a:000)
  if result =~# '^\%(write\|wq\|echoerr\)'
    return s:sub(result,'^write','wq')
  else
    return result.'|quit'.bang
  endif
endfunction

augroup fugitive_commit
  autocmd!
  autocmd VimLeavePre,BufDelete COMMIT_EDITMSG execute substitute(s:FinishCommit(), '\C^echoerr \(''[^'']*''\)*', 'redraw|echohl ErrorMsg|echo \1|echohl NONE', '')
augroup END

" Section: :Gpush, :Gfetch

function! fugitive#PushComplete(A, L, P) abort
  return s:CompleteSub('push', a:A, a:L, a:P, function('s:CompleteRemote'))
endfunction

function! fugitive#FetchComplete(A, L, P) abort
  return s:CompleteSub('fetch', a:A, a:L, a:P, function('s:CompleteRemote'))
endfunction

function! s:AskPassArgs(dir) abort
  if (len($DISPLAY) || len($TERM_PROGRAM) || has('gui_running')) && fugitive#GitVersion(1, 8) &&
        \ empty($GIT_ASKPASS) && empty($SSH_ASKPASS) && empty(fugitive#Config('core.askPass', a:dir))
    if s:executable(s:ExecPath() . '/git-gui--askpass')
      return ['-c', 'core.askPass=' . s:ExecPath() . '/git-gui--askpass']
    elseif s:executable('ssh-askpass')
      return ['-c', 'core.askPass=ssh-askpass']
    endif
  endif
  return []
endfunction

function! s:Dispatch(bang, cmd, args) abort
  let dir = s:Dir()
  let [mp, efm, cc] = [&l:mp, &l:efm, get(b:, 'current_compiler', '')]
  try
    let b:current_compiler = 'git'
    let &l:errorformat = s:common_efm .
          \ ',%\&git_dir=' . escape(substitute(dir, '%', '%%', 'g'), '\,')
    let &l:makeprg = s:UserCommand(dir, s:AskPassArgs(dir) + [a:cmd] + a:args)
    if exists(':Make') == 2
      Make
      return ''
    else
      if !has('patch-8.1.0334') && has('terminal') && &autowrite
        let autowrite_was_set = 1
        set noautowrite
        silent! wall
      endif
      silent noautocmd make!
      redraw!
      return 'call fugitive#Cwindow()|silent ' . s:DoAutocmd('ShellCmdPost')
    endif
  finally
    let [&l:mp, &l:efm, b:current_compiler] = [mp, efm, cc]
    if empty(cc) | unlet! b:current_compiler | endif
    if exists('autowrite_was_set')
      set autowrite
    endif
  endtry
endfunction

function! s:PushSubcommand(line1, line2, range, bang, mods, args) abort
  return s:Dispatch(a:bang ? '!' : '', 'push', a:args)
endfunction

function! s:FetchSubcommand(line1, line2, range, bang, mods, args) abort
  return s:Dispatch(a:bang ? '!' : '', 'fetch', a:args)
endfunction

" Section: :Gdiff

augroup fugitive_diff
  autocmd!
  autocmd BufWinLeave *
        \ if s:can_diffoff(+expand('<abuf>')) && s:diff_window_count() == 2 |
        \   call s:diffoff_all(s:Dir(+expand('<abuf>'))) |
        \ endif
  autocmd BufWinEnter *
        \ if s:can_diffoff(+expand('<abuf>')) && s:diff_window_count() == 1 |
        \   call s:diffoff() |
        \ endif
augroup END

function! s:can_diffoff(buf) abort
  return getwinvar(bufwinnr(a:buf), '&diff') &&
        \ !empty(getwinvar(bufwinnr(a:buf), 'fugitive_diff_restore'))
endfunction

function! fugitive#CanDiffoff(buf) abort
  return s:can_diffoff(bufnr(a:buf))
endfunction

function! s:diff_modifier(count) abort
  let fdc = matchstr(&diffopt, 'foldcolumn:\zs\d\+')
  if &diffopt =~# 'horizontal' && &diffopt !~# 'vertical'
    return ''
  elseif &diffopt =~# 'vertical'
    return 'vertical '
  elseif winwidth(0) <= a:count * ((&tw ? &tw : 80) + (empty(fdc) ? 2 : fdc))
    return ''
  else
    return 'vertical '
  endif
endfunction

function! s:diff_window_count() abort
  let c = 0
  for nr in range(1,winnr('$'))
    let c += getwinvar(nr,'&diff')
  endfor
  return c
endfunction

function! s:diff_restore() abort
  let restore = 'setlocal nodiff noscrollbind'
        \ . ' scrollopt=' . &l:scrollopt
        \ . (&l:wrap ? ' wrap' : ' nowrap')
        \ . ' foldlevel=999'
        \ . ' foldmethod=' . &l:foldmethod
        \ . ' foldcolumn=' . &l:foldcolumn
        \ . ' foldlevel=' . &l:foldlevel
        \ . (&l:foldenable ? ' foldenable' : ' nofoldenable')
  if has('cursorbind')
    let restore .= (&l:cursorbind ? ' ' : ' no') . 'cursorbind'
  endif
  return restore
endfunction

function! s:diffthis() abort
  if !&diff
    let w:fugitive_diff_restore = s:diff_restore()
    diffthis
  endif
endfunction

function! s:diffoff() abort
  if exists('w:fugitive_diff_restore')
    execute w:fugitive_diff_restore
    unlet w:fugitive_diff_restore
  else
    diffoff
  endif
endfunction

function! s:diffoff_all(dir) abort
  let curwin = winnr()
  for nr in range(1,winnr('$'))
    if getwinvar(nr, '&diff') && !empty(getwinvar(nr, 'fugitive_diff_restore'))
      if nr != winnr()
        execute nr.'wincmd w'
      endif
      call s:diffoff()
    endif
  endfor
  execute curwin.'wincmd w'
endfunction

function! s:CompareAge(mine, theirs) abort
  let scores = {':0': 1, ':1': 2, ':2': 3, ':': 4, ':3': 5}
  let mine = substitute(a:mine, '^:', '', '')
  let theirs = substitute(a:theirs, '^:', '', '')
  let my_score    = get(scores, ':'.mine, 0)
  let their_score = get(scores, ':'.theirs, 0)
  if my_score || their_score
    return my_score < their_score ? -1 : my_score != their_score
  elseif mine ==# theirs
    return 0
  endif
  let base = s:TreeChomp('merge-base', mine, theirs)
  if base ==# mine
    return -1
  elseif base ==# theirs
    return 1
  endif
  let my_time    = +s:TreeChomp('log', '--max-count=1', '--pretty=format:%at', a:mine, '--')
  let their_time = +s:TreeChomp('log', '--max-count=1', '--pretty=format:%at', a:theirs, '--')
  return my_time < their_time ? -1 : my_time != their_time
endfunction

function! s:IsConflicted() abort
  return len(@%) && !empty(s:ChompDefault('', 'ls-files', '--unmerged', '--', expand('%:p')))
endfunction

function! fugitive#Diffsplit(autodir, keepfocus, mods, arg, args) abort
  let args = copy(a:args)
  let post = ''
  if get(args, 0) =~# '^+'
    let post = remove(args, 0)[1:-1]
  endif
  if exists(':DiffGitCached') && empty(args)
    return s:Mods(a:mods) . 'DiffGitCached' . (len(post) ? '|' . post : '')
  endif
  let commit = s:DirCommitFile(@%)[1]
  if a:mods =~# '\<tab\>'
    let mods = substitute(a:mods, '\<tab\>', '', 'g')
    let pre = 'tab split'
  else
    let mods = 'keepalt ' . a:mods
    let pre = ''
  endif
  let back = exists('*win_getid') ? 'call win_gotoid(' . win_getid() . ')' : 'wincmd p'
  if (empty(args) || args[0] ==# ':') && a:keepfocus
    exe s:DirCheck()
    if empty(commit) && s:IsConflicted()
      let parents = [s:Relative(':2:'), s:Relative(':3:')]
    elseif empty(commit)
      let parents = [s:Relative(':0:')]
    elseif commit =~# '^\d\=$'
      let parents = [s:Relative('HEAD:')]
    elseif commit =~# '^\x\x\+$'
      let parents = s:LinesError(['rev-parse', commit . '^@'])[0]
      call map(parents, 's:Relative(v:val . ":")')
    endif
  endif
  try
    if exists('parents') && len(parents) > 1
      exe pre
      let mods = (a:autodir ? s:diff_modifier(len(parents) + 1) : '') . s:Mods(mods, 'leftabove')
      let nr = bufnr('')
      execute mods 'split' s:fnameescape(s:Generate(parents[0]))
      call s:Map('n', 'dp', ':diffput '.nr.'<Bar>diffupdate<CR>', '<silent>')
      let nr2 = bufnr('')
      call s:diffthis()
      exe back
      call s:Map('n', 'd2o', ':diffget '.nr2.'<Bar>diffupdate<CR>', '<silent>')
      let mods = substitute(mods, '\Cleftabove\|rightbelow\|aboveleft\|belowright', '\=submatch(0) =~# "f" ? "rightbelow" : "leftabove"', '')
      for i in range(len(parents)-1, 1, -1)
        execute mods 'split' s:fnameescape(s:Generate(parents[i]))
        call s:Map('n', 'dp', ':diffput '.nr.'<Bar>diffupdate<CR>', '<silent>')
        let nrx = bufnr('')
        call s:diffthis()
        exe back
        call s:Map('n', 'd' . (i + 2) . 'o', ':diffget '.nrx.'<Bar>diffupdate<CR>', '<silent>')
      endfor
      call s:diffthis()
      if len(parents) > 1
        wincmd =
      endif
      return post
    elseif len(args)
      let arg = join(args, ' ')
      if arg ==# ''
        return post
      elseif arg ==# ':/'
        exe s:DirCheck()
        let file = s:Relative()
      elseif arg ==# ':'
        exe s:DirCheck()
        let file = s:Relative(':0:')
      elseif arg =~# '^:\d$'
        exe s:DirCheck()
        let file = s:Relative(arg . ':')
      elseif arg =~# '^[~^]\d*$'
        return 'echoerr ' . string('fugitive: change ' . arg . ' to !' . arg . ' to diff against ancestor')
      else
        try
          let file = arg =~# '^:/.' ? fugitive#RevParse(arg) . s:Relative(':') : s:Expand(arg)
        catch /^fugitive:/
          return 'echoerr ' . string(v:exception)
        endtry
      endif
    elseif exists('parents') && len(parents)
      let file = parents[-1]
    elseif len(commit)
      let file = s:Relative()
    elseif s:IsConflicted()
      let file = s:Relative(':1:')
      let post = 'echohl WarningMsg|echo "Use :Gdiffsplit! for 3 way diff"|echohl NONE|' . post
    else
      exe s:DirCheck()
      let file = s:Relative(':0:')
    endif
    let spec = s:Generate(file)
    if spec =~# '^fugitive:' && empty(s:DirCommitFile(spec)[2])
      let spec = FugitiveVimPath(spec . s:Relative('/'))
    endif
    exe pre
    let restore = s:diff_restore()
    let w:fugitive_diff_restore = restore
    if len(spec) && s:CompareAge(commit, s:DirCommitFile(spec)[1]) < 0
      let mods = s:Mods(mods, 'rightbelow')
    else
      let mods = s:Mods(mods, 'leftabove')
    endif
    let mods = (a:autodir ? s:diff_modifier(2) : '') . mods
    if &diffopt =~# 'vertical'
      let diffopt = &diffopt
      set diffopt-=vertical
    endif
    execute mods 'diffsplit' s:fnameescape(spec)
    let &l:readonly = &l:readonly
    redraw
    let w:fugitive_diff_restore = restore
    let winnr = winnr()
    if getwinvar('#', '&diff')
      if a:keepfocus
        exe back
      endif
    endif
    return post
  catch /^fugitive:/
    return 'echoerr ' . string(v:exception)
  finally
    if exists('diffopt')
      let &diffopt = diffopt
    endif
  endtry
endfunction

" Section: :Gmove, :Gremove

function! s:Move(force, rename, destination) abort
  let dir = s:Dir()
  exe s:DirCheck(dir)
  if s:DirCommitFile(@%)[1] !~# '^0\=$' || empty(@%)
    return 'echoerr ' . string('fugitive: mv not supported for this buffer')
  endif
  if a:destination =~# '^\.\.\=\%(/\|$\)'
    let destination = simplify(getcwd() . '/' . a:destination)
  elseif a:destination =~# '^\a\+:\|^/'
    let destination = a:destination
  elseif a:destination =~# '^:/:\='
    let destination = s:Tree(dir) . substitute(a:destination, '^:/:\=', '', '')
  elseif a:destination =~# '^:(\%(top\|top,literal\|literal,top\))'
    let destination = s:Tree(dir) . matchstr(a:destination, ')\zs.*')
  elseif a:destination =~# '^:(literal)'
    let destination = simplify(getcwd() . '/' . matchstr(a:destination, ')\zs.*'))
  elseif a:rename
    let destination = expand('%:p:s?[\/]$??:h') . '/' . a:destination
  else
    let destination = s:Tree(dir) . '/' . a:destination
  endif
  let destination = s:Slash(destination)
  if isdirectory(@%)
    setlocal noswapfile
  endif
  let [message, exec_error] = s:ChompError(['mv'] + (a:force ? ['-f'] : []) + ['--', expand('%:p'), destination], dir)
  if exec_error
    let v:errmsg = 'fugitive: '.message
    return 'echoerr v:errmsg'
  endif
  if isdirectory(destination)
    let destination = fnamemodify(s:sub(destination,'/$','').'/'.expand('%:t'),':.')
  endif
  let reload = '|call fugitive#ReloadStatus(' . string(dir) . ', 1)'
  if empty(s:DirCommitFile(@%)[1])
    if isdirectory(destination)
      return 'keepalt edit '.s:fnameescape(destination) . reload
    else
      return 'keepalt saveas! '.s:fnameescape(destination) . reload
    endif
  else
    return 'file '.s:fnameescape(fugitive#Find(':0:'.destination, dir)) . reload
  endif
endfunction

function! fugitive#RenameComplete(A,L,P) abort
  if a:A =~# '^[.:]\=/'
    return fugitive#CompletePath(a:A)
  else
    let pre = s:Slash(fnamemodify(expand('%:p:s?[\/]$??'), ':h')) . '/'
    return map(fugitive#CompletePath(pre.a:A), 'strpart(v:val, len(pre))')
  endif
endfunction

function! fugitive#MoveCommand(line1, line2, range, bang, mods, arg, args) abort
  return s:Move(a:bang, 0, a:arg)
endfunction

function! fugitive#RenameCommand(line1, line2, range, bang, mods, arg, args) abort
  return s:Move(a:bang, 1, a:arg)
endfunction

function! s:Remove(after, force) abort
  let dir = s:Dir()
  exe s:DirCheck(dir)
  if len(@%) && s:DirCommitFile(@%)[1] ==# ''
    let cmd = ['rm']
  elseif s:DirCommitFile(@%)[1] ==# '0'
    let cmd = ['rm','--cached']
  else
    return 'echoerr ' . string('fugitive: rm not supported for this buffer')
  endif
  if a:force
    let cmd += ['--force']
  endif
  let [message, exec_error] = s:ChompError(cmd + ['--', expand('%:p')], dir)
  if exec_error
    let v:errmsg = 'fugitive: '.s:sub(message,'error:.*\zs\n\(.*-f.*',' (add ! to force)')
    return 'echoerr '.string(v:errmsg)
  else
    return a:after . (a:force ? '!' : ''). '|call fugitive#ReloadStatus(' . string(dir) . ', 1)'
  endif
endfunction

function! fugitive#RemoveCommand(line1, line2, range, bang, mods, arg, args) abort
  return s:Remove('edit', a:bang)
endfunction

function! fugitive#DeleteCommand(line1, line2, range, bang, mods, arg, args) abort
  return s:Remove('bdelete', a:bang)
endfunction

" Section: :Gblame

function! s:Keywordprg() abort
  let args = ' --git-dir='.escape(s:Dir(),"\\\"' ")
  if has('gui_running') && !has('win32')
    return s:UserCommand() . ' --no-pager' . args . ' log -1'
  else
    return s:UserCommand() . args . ' show'
  endif
endfunction

function! s:linechars(pattern) abort
  let chars = strlen(s:gsub(matchstr(getline('.'), a:pattern), '.', '.'))
  if exists('*synconcealed') && &conceallevel > 1
    for col in range(1, chars)
      let chars -= synconcealed(line('.'), col)[0]
    endfor
  endif
  return chars
endfunction

function! s:BlameBufnr(...) abort
  let state = s:TempState(bufname(a:0 ? a:1 : ''))
  if get(state, 'filetype', '') ==# 'fugitiveblame'
    return get(state, 'bufnr', -1)
  else
    return -1
  endif
endfunction

function! s:BlameCommitFileLnum(...) abort
  let line = a:0 ? a:1 : getline('.')
  let state = a:0 ? a:2 : s:TempState()
  let commit = matchstr(line, '^\^\=\zs\x\+')
  if commit =~# '^0\+$'
    let commit = ''
  elseif has_key(state, 'blame_reverse_end')
    let commit = get(s:LinesError('rev-list', '--ancestry-path', '--reverse', commit . '..' . state.blame_reverse_end)[0], 0, '')
  endif
  let lnum = +matchstr(line, ' \zs\d\+\ze \%((\| *\d\+)\)')
  let path = matchstr(line, '^\^\=[?*]*\x* \+\%(\d\+ \+\d\+ \+\)\=\zs.\{-\}\ze\s\+\%(\%( \d\+ \)\@<!([^()]*\w \d\+)\|\d\+ \)')
  if empty(path) && lnum
    let path = get(state, 'blame_file', '')
  endif
  return [commit, path, lnum]
endfunction

function! s:BlameLeave() abort
  let bufwinnr = bufwinnr(s:BlameBufnr())
  if bufwinnr > 0
    let bufnr = bufnr('')
    exe bufwinnr . 'wincmd w'
    return bufnr . 'bdelete'
  endif
  return ''
endfunction

function! s:BlameQuit() abort
  let cmd = s:BlameLeave()
  if empty(cmd)
    return 'bdelete'
  elseif len(s:DirCommitFile(@%)[1])
    return cmd . '|Gedit'
  else
    return cmd
  endif
endfunction

function! fugitive#BlameComplete(A, L, P) abort
  return s:CompleteSub('blame', a:A, a:L, a:P)
endfunction

function! s:BlameSubcommand(line1, count, range, bang, mods, args) abort
  exe s:DirCheck()
  let flags = copy(a:args)
  let i = 0
  let raw = 0
  let commits = []
  let files = []
  let ranges = []
  if a:line1 > 0 && a:count > 0 && a:range != 1
    call extend(ranges, ['-L', a:line1 . ',' . a:count])
  endif
  while i < len(flags)
    let match = matchlist(flags[i], '^\(-[a-zABDFH-KN-RT-Z]\)\ze\(.*\)')
    if len(match) && len(match[2])
      call insert(flags, match[1])
      let flags[i+1] = '-' . match[2]
      continue
    endif
    let arg = flags[i]
    if arg =~# '^-p$\|^--\%(help\|porcelain\|line-porcelain\|incremental\)$'
      let raw = 1
    elseif arg ==# '--contents' && i + 1 < len(flags)
      call extend(commits, remove(flags, i, i+1))
      continue
    elseif arg ==# '-L' && i + 1 < len(flags)
      call extend(ranges, remove(flags, i, i+1))
      continue
    elseif arg =~# '^--contents='
      call add(commits, remove(flags, i))
      continue
    elseif arg =~# '^-L.'
      call add(ranges, remove(flags, i))
      continue
    elseif arg =~# '^-[GLS]$\|^--\%(date\|encoding\|contents\|ignore-rev\|ignore-revs-file\)$'
      let i += 1
      if i == len(flags)
        echohl ErrorMsg
        echo s:ChompError(['blame', arg])[0]
        echohl NONE
        return ''
      endif
    elseif arg ==# '--'
      if i + 1 < len(flags)
        call extend(files, remove(flags, i + 1, -1))
      endif
      call remove(flags, i)
      break
    elseif arg !~# '^-' && (s:HasOpt(flags, '--not') || arg !~# '^\^')
      if index(flags, '--') >= 0
        call add(commits, remove(flags, i))
        continue
      endif
      if arg =~# '\.\.' && arg !~# '^\.\.\=\%(/\|$\)' && empty(commits)
        call add(commits, remove(flags, i))
        continue
      endif
      try
        let dcf = s:DirCommitFile(fugitive#Find(arg))
        if len(dcf[1]) && empty(dcf[2])
          call add(commits, remove(flags, i))
          continue
        endif
      catch /^fugitive:/
      endtry
      call add(files, remove(flags, i))
      continue
    endif
    let i += 1
  endwhile
  let file = substitute(get(files, 0, get(s:TempState(), 'blame_file', s:Relative('./'))), '^\.\%(/\|$\)', '', '')
  if empty(commits) && len(files) > 1
    call add(commits, remove(files, 1))
  endif
  exe s:BlameLeave()
  try
    let cmd = ['--no-pager', '-c', 'blame.coloring=none', '-c', 'blame.blankBoundary=false', 'blame', '--show-number']
    call extend(cmd, filter(copy(flags), 'v:val !~# "\\v^%(-b|--%(no-)=color-.*|--progress)$"'))
    if a:count > 0 && empty(ranges)
      let cmd += ['-L', (a:line1 ? a:line1 : line('.')) . ',' . (a:line1 ? a:line1 : line('.'))]
    endif
    call extend(cmd, ranges)
    if len(commits)
      let cmd += commits
    elseif empty(files) && len(matchstr(s:DirCommitFile(@%)[1], '^\x\x\+$'))
      let cmd += [matchstr(s:DirCommitFile(@%)[1], '^\x\x\+$')]
    elseif empty(files) && !s:HasOpt(flags, '--reverse')
      let cmd += ['--contents', '-']
    endif
    let basecmd = escape(fugitive#Prepare(cmd) . ' -- ' . s:shellesc(len(files) ? files : file), '!#%')
    let tempname = tempname()
    let error = tempname . '.err'
    let temp = tempname . (raw ? '' : '.fugitiveblame')
    if &shell =~# 'csh'
      silent! execute '%write !('.basecmd.' > '.temp.') >& '.error
    else
      silent! execute '%write !'.basecmd.' > '.temp.' 2> '.error
    endif
    let l:shell_error = v:shell_error
    redraw
    try
      if l:shell_error
        let lines = readfile(error)
        if empty(lines)
          let lines = readfile(temp)
        endif
        for i in range(len(lines))
          if lines[i] =~# '^error: \|^fatal: '
            echohl ErrorMsg
            echon lines[i]
            echohl NONE
            break
          else
            echon lines[i]
          endif
          if i != len(lines) - 1
            echon "\n"
          endif
        endfor
        return ''
      endif
      let temp_state = {'dir': s:Dir(), 'filetype': (raw ? '' : 'fugitiveblame'), 'blame_flags': flags, 'blame_file': file, 'modifiable': 0}
      if s:HasOpt(flags, '--reverse')
        let temp_state.blame_reverse_end = matchstr(get(commits, 0, ''), '\.\.\zs.*')
      endif
      if (a:line1 == 0 || a:range == 1) && a:count > 0
        let edit = s:Mods(a:mods) . get(['edit', 'split', 'pedit', 'vsplit', 'tabedit'], a:count - (a:line1 ? a:line1 : 1), 'split')
        return s:BlameCommit(edit, get(readfile(temp), 0, ''), temp_state)
      else
        let temp = s:Resolve(temp)
        let s:temp_files[s:cpath(temp)] = temp_state
        if len(ranges + commits + files) || raw
          let mods = s:Mods(a:mods)
          if a:count != 0
            exe 'silent keepalt' mods 'split' s:fnameescape(temp)
          elseif !&modified || a:bang || &bufhidden ==# 'hide' || (empty(&bufhidden) && &hidden)
            exe 'silent' mods 'edit' . (a:bang ? '! ' : ' ') . s:fnameescape(temp)
          else
            return mods . 'edit ' . s:fnameescape(temp)
          endif
          return ''
        endif
        if a:mods =~# '\<tab\>'
          silent tabedit %
        endif
        let mods = substitute(a:mods, '\<tab\>', '', 'g')
        for winnr in range(winnr('$'),1,-1)
          if getwinvar(winnr, '&scrollbind')
            call setwinvar(winnr, '&scrollbind', 0)
          endif
          if exists('+cursorbind') && getwinvar(winnr, '&cursorbind')
            call setwinvar(winnr, '&cursorbind', 0)
          endif
          if s:BlameBufnr(winbufnr(winnr)) > 0
            execute winbufnr(winnr).'bdelete'
          endif
        endfor
        let bufnr = bufnr('')
        let temp_state.bufnr = bufnr
        let restore = 'call setwinvar(bufwinnr('.bufnr.'),"&scrollbind",0)'
        if exists('+cursorbind')
          let restore .= '|call setwinvar(bufwinnr('.bufnr.'),"&cursorbind",0)'
        endif
        if &l:wrap
          let restore .= '|call setwinvar(bufwinnr('.bufnr.'),"&wrap",1)'
        endif
        if &l:foldenable
          let restore .= '|call setwinvar(bufwinnr('.bufnr.'),"&foldenable",1)'
        endif
        setlocal scrollbind nowrap nofoldenable
        if exists('+cursorbind')
          setlocal cursorbind
        endif
        let top = line('w0') + &scrolloff
        let current = line('.')
        exe 'silent keepalt' (a:bang ? s:Mods(mods) . 'split' : s:Mods(mods, 'leftabove') . 'vsplit') s:fnameescape(temp)
        let w:fugitive_leave = restore
        execute top
        normal! zt
        execute current
        if exists('+cursorbind')
          setlocal cursorbind
        endif
        setlocal nonumber scrollbind nowrap foldcolumn=0 nofoldenable winfixwidth
        if exists('+relativenumber')
          setlocal norelativenumber
        endif
        if exists('+signcolumn')
          setlocal signcolumn=no
        endif
        execute "vertical resize ".(s:linechars('.\{-\}\ze\s\+\d\+)')+1)
        call s:Map('n', 'A', ":<C-u>exe 'vertical resize '.(<SID>linechars('.\\{-\\}\\ze [0-9:/+-][0-9:/+ -]* \\d\\+)')+1+v:count)<CR>", '<silent>')
        call s:Map('n', 'C', ":<C-u>exe 'vertical resize '.(<SID>linechars('^\\S\\+')+1+v:count)<CR>", '<silent>')
        call s:Map('n', 'D', ":<C-u>exe 'vertical resize '.(<SID>linechars('.\\{-\\}\\ze\\d\\ze\\s\\+\\d\\+)')+1-v:count)<CR>", '<silent>')
        redraw
        syncbind
      endif
    endtry
    return ''
  catch /^fugitive:/
    return 'echoerr ' . string(v:exception)
  endtry
endfunction

function! s:BlameCommit(cmd, ...) abort
  let line = a:0 ? a:1 : getline('.')
  let state = a:0 ? a:2 : s:TempState()
  let sigil = has_key(state, 'blame_reverse_end') ? '-' : '+'
  let mods = (s:BlameBufnr() < 0 ? '' : &splitbelow ? "botright " : "topleft ")
  let [commit, path, lnum] = s:BlameCommitFileLnum(line, state)
  if empty(commit) && len(path) && has_key(state, 'blame_reverse_end')
    let path = (len(state.blame_reverse_end) ? state.blame_reverse_end . ':' : ':(top)') . path
    return fugitive#Open(mods . a:cmd, 0, '', '+' . lnum . ' ' . s:fnameescape(path), ['+' . lnum, path])
  endif
  if commit =~# '^0*$'
    return 'echoerr ' . string('fugitive: no commit')
  endif
  if line =~# '^\^' && !has_key(state, 'blame_reverse_end')
    let path = commit . ':' . path
    return fugitive#Open(mods . a:cmd, 0, '', '+' . lnum . ' ' . s:fnameescape(path), ['+' . lnum, path])
  endif
  let cmd = fugitive#Open(mods . a:cmd, 0, '', commit, [commit])
  if cmd =~# '^echoerr'
    return cmd
  endif
  execute cmd
  if a:cmd ==# 'pedit' || empty(path)
    return ''
  endif
  if search('^diff .* b/\M'.escape(path,'\').'$','W')
    call search('^+++')
    let head = line('.')
    while search('^@@ \|^diff ') && getline('.') =~# '^@@ '
      let top = +matchstr(getline('.'),' ' . sigil .'\zs\d\+')
      let len = +matchstr(getline('.'),' ' . sigil . '\d\+,\zs\d\+')
      if lnum >= top && lnum <= top + len
        let offset = lnum - top
        if &scrolloff
          +
          normal! zt
        else
          normal! zt
          +
        endif
        while offset > 0 && line('.') < line('$')
          +
          if getline('.') =~# '^[ ' . sigil . ']'
            let offset -= 1
          endif
        endwhile
        return 'normal! zv'
      endif
    endwhile
    execute head
    normal! zt
  endif
  return ''
endfunction

function! s:BlameJump(suffix, ...) abort
  let suffix = a:suffix
  let [commit, path, lnum] = s:BlameCommitFileLnum()
  if empty(path)
    return 'echoerr ' . string('fugitive: could not determine filename for blame')
  endif
  if commit =~# '^0*$'
    let commit = 'HEAD'
    let suffix = ''
  endif
  let offset = line('.') - line('w0')
  let flags = get(s:TempState(), 'blame_flags', [])
  if a:0 && a:1
    if s:HasOpt(flags, '--reverse')
      call remove(flags, '--reverse')
    else
      call add(flags, '--reverse')
    endif
  endif
  let blame_bufnr = s:BlameBufnr()
  if blame_bufnr > 0
    let bufnr = bufnr('')
    let winnr = bufwinnr(blame_bufnr)
    if winnr > 0
      exe winnr.'wincmd w'
      exe bufnr.'bdelete'
    endif
    execute 'Gedit' s:fnameescape(commit . suffix . ':' . path)
    execute lnum
  endif
  if exists(':Gblame')
    let my_bufnr = bufnr('')
    if blame_bufnr < 0
      let blame_args = flags + [commit . suffix, '--', path]
      let result = s:BlameSubcommand(0, 0, 0, 0, '', blame_args)
    else
      let blame_args = flags
      let result = s:BlameSubcommand(-1, -1, 0, 0, '', blame_args)
    endif
    if bufnr('') == my_bufnr
      return result
    endif
    execute result
    execute lnum
    let delta = line('.') - line('w0') - offset
    if delta > 0
      execute 'normal! '.delta."\<C-E>"
    elseif delta < 0
      execute 'normal! '.(-delta)."\<C-Y>"
    endif
    keepjumps syncbind
    redraw
    echo ':Gblame' s:fnameescape(blame_args)
  endif
  return ''
endfunction

let s:hash_colors = {}

function! fugitive#BlameSyntax() abort
  let conceal = has('conceal') ? ' conceal' : ''
  let config = fugitive#Config()
  let flags = get(s:TempState(), 'blame_flags', [])
  syn match FugitiveblameBlank                      "^\s\+\s\@=" nextgroup=FugitiveblameAnnotation,FugitiveblameScoreDebug,FugitiveblameOriginalFile,FugitiveblameOriginalLineNumber skipwhite
  syn match FugitiveblameHash       "\%(^\^\=[?*]*\)\@<=\<\x\{7,\}\>" nextgroup=FugitiveblameAnnotation,FugitiveblameScoreDebug,FugitiveblameOriginalLineNumber,FugitiveblameOriginalFile skipwhite
  syn match FugitiveblameUncommitted "\%(^\^\=\)\@<=\<0\{7,\}\>" nextgroup=FugitiveblameAnnotation,FugitiveblameScoreDebug,FugitiveblameOriginalLineNumber,FugitiveblameOriginalFile skipwhite
  if get(get(config, 'blame.blankboundary', ['x']), 0, 'x') =~# '^$\|^true$' || s:HasOpt(flags, '-b')
    syn match FugitiveblameBoundaryIgnore "^\^[*?]*\x\{7,\}\>" nextgroup=FugitiveblameAnnotation,FugitiveblameScoreDebug,FugitiveblameOriginalLineNumber,FugitiveblameOriginalFile skipwhite
  else
    syn match FugitiveblameBoundary "^\^"
  endif
  syn match FugitiveblameScoreDebug        " *\d\+\s\+\d\+\s\@=" nextgroup=FugitiveblameAnnotation,FugitiveblameOriginalLineNumber,fugitiveblameOriginalFile contained skipwhite
  syn region FugitiveblameAnnotation matchgroup=FugitiveblameDelimiter start="(" end="\%(\s\d\+\)\@<=)" contained keepend oneline
  syn match FugitiveblameTime "[0-9:/+-][0-9:/+ -]*[0-9:/+-]\%(\s\+\d\+)\)\@=" contained containedin=FugitiveblameAnnotation
  exec 'syn match FugitiveblameLineNumber         "\s*\d\+)\@=" contained containedin=FugitiveblameAnnotation' conceal
  exec 'syn match FugitiveblameOriginalFile       "\s\%(\f\+\D\@<=\|\D\@=\f\+\)\%(\%(\s\+\d\+\)\=\s\%((\|\s*\d\+)\)\)\@=" contained nextgroup=FugitiveblameOriginalLineNumber,FugitiveblameAnnotation skipwhite' (s:HasOpt(flags, '--show-name', '-f') ? '' : conceal)
  exec 'syn match FugitiveblameOriginalLineNumber "\s*\d\+\%(\s(\)\@=" contained nextgroup=FugitiveblameAnnotation skipwhite' (s:HasOpt(flags, '--show-number', '-n') ? '' : conceal)
  exec 'syn match FugitiveblameOriginalLineNumber "\s*\d\+\%(\s\+\d\+)\)\@=" contained nextgroup=FugitiveblameShort skipwhite' (s:HasOpt(flags, '--show-number', '-n') ? '' : conceal)
  syn match FugitiveblameShort              " \d\+)" contained contains=FugitiveblameLineNumber
  syn match FugitiveblameNotCommittedYet "(\@<=Not Committed Yet\>" contained containedin=FugitiveblameAnnotation
  hi def link FugitiveblameBoundary           Keyword
  hi def link FugitiveblameHash               Identifier
  hi def link FugitiveblameBoundaryIgnore     Ignore
  hi def link FugitiveblameUncommitted        Ignore
  hi def link FugitiveblameScoreDebug         Debug
  hi def link FugitiveblameTime               PreProc
  hi def link FugitiveblameLineNumber         Number
  hi def link FugitiveblameOriginalFile       String
  hi def link FugitiveblameOriginalLineNumber Float
  hi def link FugitiveblameShort              FugitiveblameDelimiter
  hi def link FugitiveblameDelimiter          Delimiter
  hi def link FugitiveblameNotCommittedYet    Comment
  if !get(g:, 'fugitive_dynamic_colors', 1) && !s:HasOpt(flags, '--color-lines') || s:HasOpt(flags, '--no-color-lines')
    return
  endif
  let seen = {}
  for lnum in range(1, line('$'))
    let hash = matchstr(getline(lnum), '^\^\=\zs\x\{6\}')
    if hash ==# '' || hash ==# '000000' || has_key(seen, hash)
      continue
    endif
    let seen[hash] = 1
    if &t_Co > 16 && get(g:, 'CSApprox_loaded') && !empty(findfile('autoload/csapprox/per_component.vim', escape(&rtp, ' ')))
          \ && empty(get(s:hash_colors, hash))
      let [s, r, g, b; __] = map(matchlist(hash, '\(\x\x\)\(\x\x\)\(\x\x\)'), 'str2nr(v:val,16)')
      let color = csapprox#per_component#Approximate(r, g, b)
      if color == 16 && &background ==# 'dark'
        let color = 8
      endif
      let s:hash_colors[hash] = ' ctermfg='.color
    else
      let s:hash_colors[hash] = ''
    endif
    exe 'syn match FugitiveblameHash'.hash.'       "\%(^\^\=\)\@<='.hash.'\x\{1,34\}\>" nextgroup=FugitiveblameAnnotation,FugitiveblameOriginalLineNumber,fugitiveblameOriginalFile skipwhite'
  endfor
  call s:BlameRehighlight()
endfunction

function! s:BlameRehighlight() abort
  for [hash, cterm] in items(s:hash_colors)
    if !empty(cterm) || has('gui_running') || has('termguicolors') && &termguicolors
      exe 'hi FugitiveblameHash'.hash.' guifg=#'.hash.get(s:hash_colors, hash, '')
    else
      exe 'hi link FugitiveblameHash'.hash.' Identifier'
    endif
  endfor
endfunction

function! s:BlameFileType() abort
  setlocal nomodeline
  setlocal foldmethod=manual
  if len(s:Dir())
    let &l:keywordprg = s:Keywordprg()
  endif
  let b:undo_ftplugin = 'setl keywordprg= foldmethod<'
  if exists('+concealcursor')
    setlocal concealcursor=nc conceallevel=2
    let b:undo_ftplugin .= ' concealcursor< conceallevel<'
  endif
  if &modifiable
    return ''
  endif
  call s:Map('n', '<F1>', ':help :Gblame<CR>', '<silent>')
  call s:Map('n', 'g?',   ':help :Gblame<CR>', '<silent>')
  if mapcheck('q', 'n') =~# '^$\|bdelete'
    call s:Map('n', 'q',  ':exe <SID>BlameQuit()<Bar>echohl WarningMsg<Bar>echo ":Gblame q is deprecated in favor of gq"<Bar>echohl NONE<CR>', '<silent>')
  endif
  call s:Map('n', 'gq',   ':exe <SID>BlameQuit()<CR>', '<silent>')
  call s:Map('n', '<2-LeftMouse>', ':<C-U>exe <SID>BlameCommit("exe <SID>BlameLeave()<Bar>edit")<CR>', '<silent>')
  call s:Map('n', '<CR>', ':<C-U>exe <SID>BlameCommit("exe <SID>BlameLeave()<Bar>edit")<CR>', '<silent>')
  call s:Map('n', '-',    ':<C-U>exe <SID>BlameJump("")<CR>', '<silent>')
  call s:Map('n', 'P',    ':<C-U>exe <SID>BlameJump("^".v:count1)<CR>', '<silent>')
  call s:Map('n', '~',    ':<C-U>exe <SID>BlameJump("~".v:count1)<CR>', '<silent>')
  call s:Map('n', 'i',    ':<C-U>exe <SID>BlameCommit("exe <SID>BlameLeave()<Bar>edit")<CR>', '<silent>')
  call s:Map('n', 'o',    ':<C-U>exe <SID>BlameCommit("split")<CR>', '<silent>')
  call s:Map('n', 'O',    ':<C-U>exe <SID>BlameCommit("tabedit")<CR>', '<silent>')
  call s:Map('n', 'p',    ':<C-U>exe <SID>BlameCommit("pedit")<CR>', '<silent>')
endfunction

augroup fugitive_blame
  autocmd!
  autocmd FileType fugitiveblame call s:BlameFileType()
  autocmd ColorScheme,GUIEnter * call s:BlameRehighlight()
  autocmd BufWinLeave * execute getwinvar(+bufwinnr(+expand('<abuf>')), 'fugitive_leave')
augroup END

" Section: :Gbrowse

let s:redirects = {}

function! fugitive#BrowseCommand(line1, count, range, bang, mods, arg, args) abort
  let dir = s:Dir()
  exe s:DirCheck(dir)
  try
    let validremote = '\.\|\.\=/.*\|[[:alnum:]_-]\+\%(://.\{-\}\)\='
    if a:args ==# ['-']
      if a:count >= 0
        return 'echoerr ' . string('fugitive: ''-'' no longer required to get persistent URL if range given')
      else
        return 'echoerr ' . string('fugitive: use :0Gbrowse instead of :Gbrowse -')
      endif
    elseif len(a:args)
      let remote = matchstr(join(a:args, ' '),'@\zs\%('.validremote.'\)$')
      let rev = substitute(join(a:args, ' '),'@\%('.validremote.'\)$','','')
    else
      let remote = ''
      let rev = ''
    endif
    if rev ==# ''
      let rev = s:DirRev(@%)[1]
    endif
    if rev =~# '^:\=$'
      let expanded = s:Relative()
    else
      let expanded = s:Expand(rev)
    endif
    let cdir = FugitiveVimPath(fugitive#CommonDir(dir))
    for subdir in ['tags/', 'heads/', 'remotes/']
      if expanded !~# '^[./]' && filereadable(cdir . '/refs/' . subdir . expanded)
        let expanded = '.git/refs/' . subdir . expanded
      endif
    endfor
    let full = fugitive#Find(expanded, dir)
    let commit = ''
    if full =~? '^fugitive:'
      let [pathdir, commit, path] = s:DirCommitFile(full)
      if commit =~# '^:\=\d$'
        let commit = ''
      endif
      if commit =~ '..'
        let type = s:TreeChomp('cat-file','-t',commit.s:sub(path,'^/',':'))
        let branch = matchstr(expanded, '^[^:]*')
      else
        let type = 'blob'
      endif
      let path = path[1:-1]
    elseif empty(s:Tree(dir))
      let path = '.git/' . full[strlen(dir)+1:-1]
      let type = ''
    else
      let path = fugitive#Path(full, '/')[1:-1]
      if path =~# '^\.git/'
        let type = ''
      elseif isdirectory(full) || empty(path)
        let type = 'tree'
      else
        let type = 'blob'
      endif
    endif
    if type ==# 'tree' && !empty(path)
      let path = s:sub(path, '/\=$', '/')
    endif
    if path =~# '^\.git/.*HEAD$' && filereadable(dir . '/' . path[5:-1])
      let body = readfile(dir . '/' . path[5:-1])[0]
      if body =~# '^\x\{40,\}$'
        let commit = body
        let type = 'commit'
        let path = ''
      elseif body =~# '^ref: refs/'
        let path = '.git/' . matchstr(body,'ref: \zs.*')
      endif
    endif

    let merge = ''
    if path =~# '^\.git/refs/remotes/.'
      if empty(remote)
        let remote = matchstr(path, '^\.git/refs/remotes/\zs[^/]\+')
        let branch = matchstr(path, '^\.git/refs/remotes/[^/]\+/\zs.\+')
      else
        let merge = matchstr(path, '^\.git/refs/remotes/[^/]\+/\zs.\+')
        let path = '.git/refs/heads/'.merge
      endif
    elseif path =~# '^\.git/refs/heads/.'
      let branch = path[16:-1]
    elseif !exists('branch')
      let branch = FugitiveHead()
    endif
    if !empty(branch)
      let r = fugitive#Config('branch.'.branch.'.remote')
      let m = fugitive#Config('branch.'.branch.'.merge')[11:-1]
      if r ==# '.' && !empty(m)
        let r2 = fugitive#Config('branch.'.m.'.remote')
        if r2 !~# '^\.\=$'
          let r = r2
          let m = fugitive#Config('branch.'.m.'.merge')[11:-1]
        endif
      endif
      if empty(remote)
        let remote = r
      endif
      if r ==# '.' || r ==# remote
        let merge = m
        if path =~# '^\.git/refs/heads/.'
          let path = '.git/refs/heads/'.merge
        endif
      endif
    endif

    let line1 = a:count > 0 ? a:line1 : 0
    let line2 = a:count > 0 ? a:count : 0
    if empty(commit) && path !~# '^\.git/'
      if a:count < 0 && !empty(merge)
        let commit = merge
      else
        let commit = ''
        if len(merge)
          let owner = s:Owner(@%)
          let [commit, exec_error] = s:ChompError(['merge-base', 'refs/remotes/' . remote . '/' . merge, empty(owner) ? 'HEAD' : owner, '--'])
          if exec_error
            let commit = ''
          endif
          if a:count > 0 && empty(a:args) && commit =~# '^\x\{40,\}$'
            let blame_list = tempname()
            call writefile([commit, ''], blame_list, 'b')
            let blame_in = tempname()
            silent exe '%write' blame_in
            let [blame, exec_error] = s:LinesError(['-c', 'blame.coloring=none', 'blame', '--contents', blame_in, '-L', a:line1.','.a:count, '-S', blame_list, '-s', '--show-number', './' . path])
            if !exec_error
              let blame_regex = '^\^\x\+\s\+\zs\d\+\ze\s'
              if get(blame, 0) =~# blame_regex && get(blame, -1) =~# blame_regex
                let line1 = +matchstr(blame[0], blame_regex)
                let line2 = +matchstr(blame[-1], blame_regex)
              else
                call s:throw("Can't browse to uncommitted change")
              endif
            endif
          endif
        endif
      endif
      if empty(commit)
        let commit = readfile(fugitive#Find('.git/HEAD', dir), '', 1)[0]
      endif
      let i = 0
      while commit =~# '^ref: ' && i < 10
        let commit = readfile(cdir . '/' . commit[5:-1], '', 1)[0]
        let i -= 1
      endwhile
    endif

    if empty(remote)
      let remote = '.'
    endif
    let raw = fugitive#RemoteUrl(remote)
    if empty(raw)
      let raw = remote
    endif

    if raw =~# '^https\=://' && s:executable('curl')
      if !has_key(s:redirects, raw)
        let s:redirects[raw] = matchstr(system('curl -I ' .
              \ s:shellesc(raw . '/info/refs?service=git-upload-pack')),
              \ 'Location: \zs\S\+\ze/info/refs?')
      endif
      if len(s:redirects[raw])
        let raw = s:redirects[raw]
      endif
    endif

    let opts = {
          \ 'dir': dir,
          \ 'repo': fugitive#repo(dir),
          \ 'remote': raw,
          \ 'revision': 'No longer provided',
          \ 'commit': commit,
          \ 'path': path,
          \ 'type': type,
          \ 'line1': line1,
          \ 'line2': line2}

    let url = ''
    for Handler in get(g:, 'fugitive_browse_handlers', [])
      let url = call(Handler, [copy(opts)])
      if !empty(url)
        break
      endif
    endfor

    if empty(url)
      call s:throw("No Gbrowse handler installed for '".raw."'")
    endif

    let url = s:gsub(url, '[ <>]', '\="%".printf("%02X",char2nr(submatch(0)))')
    if a:bang
      if has('clipboard')
        let @+ = url
      endif
      return 'echomsg '.string(url)
    elseif exists(':Browse') == 2
      return 'echomsg '.string(url).'|Browse '.url
    else
      if !exists('g:loaded_netrw')
        runtime! autoload/netrw.vim
      endif
      if exists('*netrw#BrowseX')
        return 'echomsg '.string(url).'|call netrw#BrowseX('.string(url).', 0)'
      else
        return 'echomsg '.string(url).'|call netrw#NetrwBrowseX('.string(url).', 0)'
      endif
    endif
  catch /^fugitive:/
    return 'echoerr ' . string(v:exception)
  endtry
endfunction

" Section: Go to file

nnoremap <SID>: :<C-U><C-R>=v:count ? v:count : ''<CR>
function! fugitive#MapCfile(...) abort
  exe 'cnoremap <buffer> <expr> <Plug><cfile>' (a:0 ? a:1 : 'fugitive#Cfile()')
  let b:undo_ftplugin = get(b:, 'undo_ftplugin', 'exe') . '|sil! exe "cunmap <buffer> <Plug><cfile>"'
  if !exists('g:fugitive_no_maps')
    call s:Map('n', 'gf',          '<SID>:find <Plug><cfile><CR>', '<silent><unique>', 1)
    call s:Map('n', '<C-W>f',     '<SID>:sfind <Plug><cfile><CR>', '<silent><unique>', 1)
    call s:Map('n', '<C-W><C-F>', '<SID>:sfind <Plug><cfile><CR>', '<silent><unique>', 1)
    call s:Map('n', '<C-W>gf',  '<SID>:tabfind <Plug><cfile><CR>', '<silent><unique>', 1)
    call s:Map('c', '<C-R><C-F>', '<Plug><cfile>', '<silent><unique>', 1)
  endif
endfunction

function! s:ContainingCommit() abort
  let commit = s:Owner(@%)
  return empty(commit) ? 'HEAD' : commit
endfunction

function! s:SquashArgument(...) abort
  if &filetype == 'fugitive'
    let commit = matchstr(getline('.'), '^\%(\%(\x\x\x\)\@!\l\+\s\+\)\=\zs[0-9a-f]\{4,\}\ze ')
  elseif has_key(s:temp_files, s:cpath(expand('%:p')))
    let commit = matchstr(getline('.'), '\<\x\{4,\}\>')
  else
    let commit = s:Owner(@%)
  endif
  return len(commit) && a:0 ? printf(a:1, commit) : commit
endfunction

function! s:RebaseArgument() abort
  return s:SquashArgument(' %s^')
endfunction

function! s:NavigateUp(count) abort
  let rev = substitute(s:DirRev(@%)[1], '^$', ':', 'g')
  let c = a:count
  while c
    if rev =~# ':.*/.'
      let rev = matchstr(rev, '.*\ze/.\+', '')
    elseif rev =~# '.:.'
      let rev = matchstr(rev, '^.[^:]*:')
    elseif rev =~# '^:'
      let rev = 'HEAD^{}'
    elseif rev =~# ':$'
      let rev = rev[0:-2]
    else
      return rev.'~'.c
    endif
    let c -= 1
  endwhile
  return rev
endfunction

function! s:MapMotion(lhs, rhs) abort
  call s:Map('n', a:lhs, ":<C-U>" . a:rhs . "<CR>", "<silent>")
  call s:Map('o', a:lhs, ":<C-U>" . a:rhs . "<CR>", "<silent>")
  call s:Map('x', a:lhs, ":<C-U>exe 'normal! gv'<Bar>" . a:rhs . "<CR>", "<silent>")
endfunction

function! fugitive#MapJumps(...) abort
  if !&modifiable
    if get(b:, 'fugitive_type', '') ==# 'blob'
      let blame_map = 'Gblame<C-R>=v:count ? " --reverse" : ""<CR><CR>'
      call s:Map('n', '<2-LeftMouse>', ':<C-U>0,1' . blame_map, '<silent>')
      call s:Map('n', '<CR>', ':<C-U>0,1' . blame_map, '<silent>')
      call s:Map('n', 'o',    ':<C-U>0,2' . blame_map, '<silent>')
      call s:Map('n', 'p',    ':<C-U>0,3' . blame_map, '<silent>')
      call s:Map('n', 'gO',   ':<C-U>0,4' . blame_map, '<silent>')
      call s:Map('n', 'O',    ':<C-U>0,5' . blame_map, '<silent>')

      call s:Map('n', 'D',  ":<C-U>call <SID>DiffClose()<Bar>Gdiffsplit!<Bar>redraw<Bar>echohl WarningMsg<Bar> echo ':Gstatus D is deprecated in favor of dd'<Bar>echohl NONE<CR>", '<silent>')
      call s:Map('n', 'dd', ":<C-U>call <SID>DiffClose()<Bar>Gdiffsplit!<CR>", '<silent>')
      call s:Map('n', 'dh', ":<C-U>call <SID>DiffClose()<Bar>Ghdiffsplit!<CR>", '<silent>')
      call s:Map('n', 'ds', ":<C-U>call <SID>DiffClose()<Bar>Ghdiffsplit!<CR>", '<silent>')
      call s:Map('n', 'dv', ":<C-U>call <SID>DiffClose()<Bar>Gvdiffsplit!<CR>", '<silent>')
      call s:Map('n', 'd?', ":<C-U>help fugitive_d<CR>", '<silent>')

    else
      call s:Map('n', '<2-LeftMouse>', ':<C-U>exe <SID>GF("edit")<CR>', '<silent>')
      call s:Map('n', '<CR>', ':<C-U>exe <SID>GF("edit")<CR>', '<silent>')
      call s:Map('n', 'o',    ':<C-U>exe <SID>GF("split")<CR>', '<silent>')
      call s:Map('n', 'gO',   ':<C-U>exe <SID>GF("vsplit")<CR>', '<silent>')
      call s:Map('n', 'O',    ':<C-U>exe <SID>GF("tabedit")<CR>', '<silent>')
      call s:Map('n', 'p',    ':<C-U>exe <SID>GF("pedit")<CR>', '<silent>')

      if !exists('g:fugitive_no_maps')
        if exists(':CtrlP') && get(g:, 'ctrl_p_map') =~? '^<c-p>$'
          nnoremap <buffer> <silent> <C-P> :<C-U>execute line('.') == 1 ? 'CtrlP ' . fnameescape(<SID>Tree()) : <SID>PreviousItem(v:count1)<CR>
        else
          nnoremap <buffer> <silent> <C-P> :<C-U>execute <SID>PreviousItem(v:count1)<CR>
        endif
        nnoremap <buffer> <silent> <C-N> :<C-U>execute <SID>NextItem(v:count1)<CR>
      endif
      call s:MapMotion('(', 'exe <SID>PreviousItem(v:count1)')
      call s:MapMotion(')', 'exe <SID>NextItem(v:count1)')
      call s:MapMotion('K', 'exe <SID>PreviousHunk(v:count1)')
      call s:MapMotion('J', 'exe <SID>NextHunk(v:count1)')
      call s:MapMotion('[c', 'exe <SID>PreviousHunk(v:count1)')
      call s:MapMotion(']c', 'exe <SID>NextHunk(v:count1)')
      call s:MapMotion('[/', 'exe <SID>PreviousFile(v:count1)')
      call s:MapMotion(']/', 'exe <SID>NextFile(v:count1)')
      call s:MapMotion('[m', 'exe <SID>PreviousFile(v:count1)')
      call s:MapMotion(']m', 'exe <SID>NextFile(v:count1)')
      call s:MapMotion('[[', 'exe <SID>PreviousSection(v:count1)')
      call s:MapMotion(']]', 'exe <SID>NextSection(v:count1)')
      call s:MapMotion('[]', 'exe <SID>PreviousSectionEnd(v:count1)')
      call s:MapMotion('][', 'exe <SID>NextSectionEnd(v:count1)')
      call s:Map('nxo', '*', '<SID>PatchSearchExpr(0)', '<expr>')
      call s:Map('nxo', '#', '<SID>PatchSearchExpr(1)', '<expr>')
    endif
    call s:Map('n', 'S',    ':<C-U>echoerr "Use gO"<CR>', '<silent>')
    call s:Map('n', 'dq', ":<C-U>call <SID>DiffClose()<CR>", '<silent>')
    call s:Map('n', '-', ":<C-U>exe 'Gedit ' . <SID>fnameescape(<SID>NavigateUp(v:count1))<Bar> if getline(1) =~# '^tree \x\{40,\}$' && empty(getline(2))<Bar>call search('^'.escape(expand('#:t'),'.*[]~\').'/\=$','wc')<Bar>endif<CR>", '<silent>')
    call s:Map('n', 'P',     ":<C-U>exe 'Gedit ' . <SID>fnameescape(<SID>ContainingCommit().'^'.v:count1.<SID>Relative(':'))<CR>", '<silent>')
    call s:Map('n', '~',     ":<C-U>exe 'Gedit ' . <SID>fnameescape(<SID>ContainingCommit().'~'.v:count1.<SID>Relative(':'))<CR>", '<silent>')
    call s:Map('n', 'C',     ":<C-U>exe 'Gedit ' . <SID>fnameescape(<SID>ContainingCommit())<CR>", '<silent>')
    call s:Map('n', 'cp',    ":<C-U>echoerr 'Use gC'<CR>", '<silent>')
    call s:Map('n', 'gC',    ":<C-U>exe 'Gpedit ' . <SID>fnameescape(<SID>ContainingCommit())<CR>", '<silent>')
    call s:Map('n', 'gc',    ":<C-U>exe 'Gpedit ' . <SID>fnameescape(<SID>ContainingCommit())<CR>", '<silent>')
    call s:Map('n', 'gi',    ":<C-U>exe 'Gsplit' (v:count ? '.gitignore' : '.git/info/exclude')<CR>", '<silent>')
    call s:Map('x', 'gi',    ":<C-U>exe 'Gsplit' (v:count ? '.gitignore' : '.git/info/exclude')<CR>", '<silent>')

    nnoremap <buffer>       c<Space> :Git commit<Space>
    nnoremap <buffer>          c<CR> :Git commit<CR>
    nnoremap <buffer>      cv<Space> :Git commit -v<Space>
    nnoremap <buffer>         cv<CR> :Git commit -v<CR>
    nnoremap <buffer> <silent> ca    :<C-U>Gcommit --amend<CR>
    nnoremap <buffer> <silent> cc    :<C-U>Gcommit<CR>
    nnoremap <buffer> <silent> ce    :<C-U>Gcommit --amend --no-edit<CR>
    nnoremap <buffer> <silent> cw    :<C-U>Gcommit --amend --only<CR>
    nnoremap <buffer> <silent> cva   :<C-U>Gcommit -v --amend<CR>
    nnoremap <buffer> <silent> cvc   :<C-U>Gcommit -v<CR>
    nnoremap <buffer> <silent> cRa   :<C-U>Gcommit --reset-author --amend<CR>
    nnoremap <buffer> <silent> cRe   :<C-U>Gcommit --reset-author --amend --no-edit<CR>
    nnoremap <buffer> <silent> cRw   :<C-U>Gcommit --reset-author --amend --only<CR>
    nnoremap <buffer>          cf    :<C-U>Gcommit --fixup=<C-R>=<SID>SquashArgument()<CR>
    nnoremap <buffer>          cF    :<C-U><Bar>Grebase --autosquash<C-R>=<SID>RebaseArgument()<CR><Home>Gcommit --fixup=<C-R>=<SID>SquashArgument()<CR>
    nnoremap <buffer>          cs    :<C-U>Gcommit --no-edit --squash=<C-R>=<SID>SquashArgument()<CR>
    nnoremap <buffer>          cS    :<C-U><Bar>Grebase --autosquash<C-R>=<SID>RebaseArgument()<CR><Home>Gcommit --no-edit --squash=<C-R>=<SID>SquashArgument()<CR>
    nnoremap <buffer>          cA    :<C-U>Gcommit --edit --squash=<C-R>=<SID>SquashArgument()<CR>
    nnoremap <buffer> <silent> c?    :<C-U>help fugitive_c<CR>

    nnoremap <buffer>      cr<Space> :Git revert<Space>
    nnoremap <buffer>         cr<CR> :Git revert<CR>
    nnoremap <buffer> <silent> crc   :<C-U>Grevert <C-R>=<SID>SquashArgument()<CR><CR>
    nnoremap <buffer> <silent> crn   :<C-U>Grevert --no-commit <C-R>=<SID>SquashArgument()<CR><CR>
    nnoremap <buffer> <silent> cr?   :help fugitive_cr<CR>

    nnoremap <buffer>      cm<Space> :Git merge<Space>
    nnoremap <buffer>         cm<CR> :Git merge<CR>
    nnoremap <buffer> <silent> cm?   :help fugitive_cm<CR>

    nnoremap <buffer>      cz<Space> :Git stash<Space>
    nnoremap <buffer>         cz<CR> :Git stash<CR>
    nnoremap <buffer> <silent> cza   :<C-U>exe <SID>EchoExec(['stash', 'apply', '--quiet', '--index', 'stash@{' . v:count . '}'])<CR>
    nnoremap <buffer> <silent> czA   :<C-U>exe <SID>EchoExec(['stash', 'apply', '--quiet', 'stash@{' . v:count . '}'])<CR>
    nnoremap <buffer> <silent> czp   :<C-U>exe <SID>EchoExec(['stash', 'pop', '--quiet', '--index', 'stash@{' . v:count . '}'])<CR>
    nnoremap <buffer> <silent> czP   :<C-U>exe <SID>EchoExec(['stash', 'pop', '--quiet', 'stash@{' . v:count . '}'])<CR>
    nnoremap <buffer> <silent> czv   :<C-U>exe 'Gedit' fugitive#RevParse('stash@{' . v:count . '}')<CR>
    nnoremap <buffer> <silent> czw   :<C-U>exe <SID>EchoExec(['stash', '--keep-index'] + (v:count > 1 ? ['--all'] : v:count ? ['--include-untracked'] : []))<CR>
    nnoremap <buffer> <silent> czz   :<C-U>exe <SID>EchoExec(['stash'] + (v:count > 1 ? ['--all'] : v:count ? ['--include-untracked'] : []))<CR>
    nnoremap <buffer> <silent> cz?   :<C-U>help fugitive_cz<CR>

    nnoremap <buffer>      co<Space> :Git checkout<Space>
    nnoremap <buffer>         co<CR> :Git checkout<CR>
    nnoremap <buffer>          coo   :exe <SID>EchoExec(['checkout'] + split(<SID>SquashArgument()) + ['--'])<CR>
    nnoremap <buffer>          co?   :<C-U>help fugitive_co<CR>

    nnoremap <buffer>      cb<Space> :Git branch<Space>
    nnoremap <buffer>         cb<CR> :Git branch<CR>
    nnoremap <buffer>         cb?    :<C-U>help fugitive_cb<CR>

    nnoremap <buffer>       r<Space> :Git rebase<Space>
    nnoremap <buffer>          r<CR> :Git rebase<CR>
    nnoremap <buffer> <silent> ri    :<C-U>Grebase --interactive<C-R>=<SID>RebaseArgument()<CR><CR>
    nnoremap <buffer> <silent> rf    :<C-U>Grebase --autosquash<C-R>=<SID>RebaseArgument()<CR><CR>
    nnoremap <buffer> <silent> ru    :<C-U>Grebase --interactive @{upstream}<CR>
    nnoremap <buffer> <silent> rp    :<C-U>Grebase --interactive @{push}<CR>
    nnoremap <buffer> <silent> rw    :<C-U>Grebase --interactive<C-R>=<SID>RebaseArgument()<CR><Bar>s/^pick/reword/e<CR>
    nnoremap <buffer> <silent> rm    :<C-U>Grebase --interactive<C-R>=<SID>RebaseArgument()<CR><Bar>s/^pick/edit/e<CR>
    nnoremap <buffer> <silent> rd    :<C-U>Grebase --interactive<C-R>=<SID>RebaseArgument()<CR><Bar>s/^pick/drop/e<CR>
    nnoremap <buffer> <silent> rk    :<C-U>Grebase --interactive<C-R>=<SID>RebaseArgument()<CR><Bar>s/^pick/drop/e<CR>
    nnoremap <buffer> <silent> rx    :<C-U>Grebase --interactive<C-R>=<SID>RebaseArgument()<CR><Bar>s/^pick/drop/e<CR>
    nnoremap <buffer> <silent> rr    :<C-U>Grebase --continue<CR>
    nnoremap <buffer> <silent> rs    :<C-U>Grebase --skip<CR>
    nnoremap <buffer> <silent> re    :<C-U>Grebase --edit-todo<CR>
    nnoremap <buffer> <silent> ra    :<C-U>Grebase --abort<CR>
    nnoremap <buffer> <silent> r?    :<C-U>help fugitive_r<CR>

    call s:Map('n', '.',     ":<C-U> <C-R>=<SID>fnameescape(fugitive#Real(@%))<CR><Home>")
    call s:Map('x', '.',     ":<C-U> <C-R>=<SID>fnameescape(fugitive#Real(@%))<CR><Home>")
    call s:Map('n', 'g?',    ":<C-U>help fugitive-map<CR>", '<silent>')
    call s:Map('n', '<F1>',  ":<C-U>help fugitive-map<CR>", '<silent>')
  endif
endfunction

function! s:StatusCfile(...) abort
  let tree = s:Tree()
  let lead = s:cpath(tree, getcwd()) ? './' : tree . '/'
  let info = s:StageInfo()
  let line = getline('.')
  if len(info.sigil) && len(info.section) && len(info.paths)
    if info.section ==# 'Unstaged' && info.sigil !=# '-'
      return [lead . info.relative[0], info.offset, 'normal!zv']
    elseif info.section ==# 'Staged' && info.sigil ==# '-'
      return ['@:' . info.relative[0], info.offset, 'normal!zv']
    else
      return [':0:' . info.relative[0], info.offset, 'normal!zv']
    endif
  elseif len(info.paths)
    return [lead . info.relative[0]]
  elseif len(info.commit)
    return [info.commit]
  elseif line =~# '^\%(Head\|Merge\|Rebase\|Upstream\|Pull\|Push\): '
    return [matchstr(line, ' \zs.*')]
  else
    return ['']
  endif
endfunction

function! fugitive#StatusCfile() abort
  let file = s:Generate(s:StatusCfile()[0])
  return empty(file) ? fugitive#Cfile() : s:fnameescape(file)
endfunction

function! s:MessageCfile(...) abort
  let tree = s:Tree()
  let lead = s:cpath(tree, getcwd()) ? './' : tree . '/'
  if getline('.') =~# '^.\=\trenamed:.* -> '
    return lead . matchstr(getline('.'),' -> \zs.*')
  elseif getline('.') =~# '^.\=\t\(\k\| \)\+\p\?: *.'
    return lead . matchstr(getline('.'),': *\zs.\{-\}\ze\%( ([^()[:digit:]]\+)\)\=$')
  elseif getline('.') =~# '^.\=\t.'
    return lead . matchstr(getline('.'),'\t\zs.*')
  elseif getline('.') =~# ': needs merge$'
    return lead . matchstr(getline('.'),'.*\ze: needs merge$')
  elseif getline('.') =~# '^\%(. \)\=Not currently on any branch.$'
    return 'HEAD'
  elseif getline('.') =~# '^\%(. \)\=On branch '
    return 'refs/heads/'.getline('.')[12:]
  elseif getline('.') =~# "^\\%(. \\)\=Your branch .*'"
    return matchstr(getline('.'),"'\\zs\\S\\+\\ze'")
  else
    return ''
  endif
endfunction

function! fugitive#MessageCfile() abort
  let file = s:Generate(s:MessageCfile())
  return empty(file) ? fugitive#Cfile() : s:fnameescape(file)
endfunction

function! s:cfile() abort
  try
    let myhash = s:DirRev(@%)[1]
    if len(myhash)
      try
        let myhash = fugitive#RevParse(myhash)
      catch /^fugitive:/
        let myhash = ''
      endtry
    endif
    if empty(myhash) && getline(1) =~# '^\%(commit\|tag\) \w'
      let myhash = matchstr(getline(1),'^\w\+ \zs\S\+')
    endif

    let showtree = (getline(1) =~# '^tree ' && getline(2) == "")

    let treebase = substitute(s:DirCommitFile(@%)[1], '^\d$', ':&', '') . ':' .
          \ s:Relative('') . (s:Relative('') =~# '^$\|/$' ? '' : '/')

    if getline('.') =~# '^\d\{6\} \l\{3,8\} \x\{40,\}\t'
      return [treebase . s:sub(matchstr(getline('.'),'\t\zs.*'),'/$','')]
    elseif showtree
      return [treebase . s:sub(getline('.'),'/$','')]

    else

      let dcmds = []

      " Index
      if getline('.') =~# '^\d\{6\} \x\{40,\} \d\t'
        let ref = matchstr(getline('.'),'\x\{40,\}')
        let file = ':'.s:sub(matchstr(getline('.'),'\d\t.*'),'\t',':')
        return [file]
      endif

      if getline('.') =~# '^ref: '
        let ref = strpart(getline('.'),5)

      elseif getline('.') =~# '^commit \x\{40,\}\>'
        let ref = matchstr(getline('.'),'\x\{40,\}')
        return [ref]

      elseif getline('.') =~# '^parent \x\{40,\}\>'
        let ref = matchstr(getline('.'),'\x\{40,\}')
        let line = line('.')
        let parent = 0
        while getline(line) =~# '^parent '
          let parent += 1
          let line -= 1
        endwhile
        return [ref]

      elseif getline('.') =~# '^tree \x\{40,\}$'
        let ref = matchstr(getline('.'),'\x\{40,\}')
        if len(myhash) && fugitive#RevParse(myhash.':') ==# ref
          let ref = myhash.':'
        endif
        return [ref]

      elseif getline('.') =~# '^object \x\{40,\}$' && getline(line('.')+1) =~ '^type \%(commit\|tree\|blob\)$'
        let ref = matchstr(getline('.'),'\x\{40,\}')
        let type = matchstr(getline(line('.')+1),'type \zs.*')

      elseif getline('.') =~# '^\l\{3,8\} '.myhash.'$'
        let ref = s:DirRev(@%)[1]

      elseif getline('.') =~# '^\l\{3,8\} \x\{40,\}\>'
        let ref = matchstr(getline('.'),'\x\{40,\}')
        echoerr "warning: unknown context ".matchstr(getline('.'),'^\l*')

      elseif getline('.') =~# '^[+-]\{3\} [abciow12]\=/'
        let ref = getline('.')[4:]

      elseif getline('.') =~# '^[+-]' && search('^@@ -\d\+\%(,\d\+\)\= +\d\+','bnW')
        let type = getline('.')[0]
        let lnum = line('.') - 1
        let offset = 0
        while getline(lnum) !~# '^@@ -\d\+\%(,\d\+\)\= +\d\+'
          if getline(lnum) =~# '^[ '.type.']'
            let offset += 1
          endif
          let lnum -= 1
        endwhile
        let offset += matchstr(getline(lnum), type.'\zs\d\+')
        let ref = getline(search('^'.type.'\{3\} [abciow12]/','bnW'))[4:-1]
        let dcmds = [offset, 'normal!zv']

      elseif getline('.') =~# '^rename from '
        let ref = 'a/'.getline('.')[12:]
      elseif getline('.') =~# '^rename to '
        let ref = 'b/'.getline('.')[10:]

      elseif getline('.') =~# '^@@ -\d\+\%(,\d\+\)\= +\d\+'
        let diff = getline(search('^diff --git \%([abciow12]/.*\|/dev/null\) \%([abciow12]/.*\|/dev/null\)', 'bcnW'))
        let offset = matchstr(getline('.'), '+\zs\d\+')

        let dref = matchstr(diff, '\Cdiff --git \zs\%([abciow12]/.*\|/dev/null\)\ze \%([abciow12]/.*\|/dev/null\)')
        let ref = matchstr(diff, '\Cdiff --git \%([abciow12]/.*\|/dev/null\) \zs\%([abciow12]/.*\|/dev/null\)')
        let dcmd = 'Gdiffsplit! +'.offset

      elseif getline('.') =~# '^diff --git \%([abciow12]/.*\|/dev/null\) \%([abciow12]/.*\|/dev/null\)'
        let dref = matchstr(getline('.'),'\Cdiff --git \zs\%([abciow12]/.*\|/dev/null\)\ze \%([abciow12]/.*\|/dev/null\)')
        let ref = matchstr(getline('.'),'\Cdiff --git \%([abciow12]/.*\|/dev/null\) \zs\%([abciow12]/.*\|/dev/null\)')
        let dcmd = 'Gdiffsplit!'

      elseif getline('.') =~# '^index ' && getline(line('.')-1) =~# '^diff --git \%([abciow12]/.*\|/dev/null\) \%([abciow12]/.*\|/dev/null\)'
        let line = getline(line('.')-1)
        let dref = matchstr(line,'\Cdiff --git \zs\%([abciow12]/.*\|/dev/null\)\ze \%([abciow12]/.*\|/dev/null\)')
        let ref = matchstr(line,'\Cdiff --git \%([abciow12]/.*\|/dev/null\) \zs\%([abciow12]/.*\|/dev/null\)')
        let dcmd = 'Gdiffsplit!'

      elseif line('$') == 1 && getline('.') =~ '^\x\{40,\}$'
        let ref = getline('.')

      elseif expand('<cword>') =~# '^\x\{7,\}\>'
        return [expand('<cword>')]

      else
        let ref = ''
      endif

      let prefixes = {
            \ '1': '',
            \ '2': '',
            \ 'b': ':0:',
            \ 'i': ':0:',
            \ 'o': '',
            \ 'w': ''}

      if len(myhash)
        let prefixes.a = myhash.'^:'
        let prefixes.b = myhash.':'
      endif
      let ref = substitute(ref, '^\(\w\)/', '\=get(prefixes, submatch(1), "HEAD:")', '')
      if exists('dref')
        let dref = substitute(dref, '^\(\w\)/', '\=get(prefixes, submatch(1), "HEAD:")', '')
      endif

      if ref ==# '/dev/null'
        " Empty blob
        let ref = 'e69de29bb2d1d6434b8b29ae775ad8c2e48c5391'
      endif

      if exists('dref')
        return [ref, dcmd . ' ' . s:fnameescape(dref)] + dcmds
      elseif ref != ""
        return [ref] + dcmds
      endif

    endif
    return []
  endtry
endfunction

function! s:GF(mode) abort
  try
    let results = &filetype ==# 'fugitive' ? s:StatusCfile() : &filetype ==# 'gitcommit' ? [s:MessageCfile()] : s:cfile()
  catch /^fugitive:/
    return 'echoerr ' . string(v:exception)
  endtry
  if len(results) > 1
    return 'G' . a:mode .
          \ ' +' . escape(results[1], ' ') . ' ' .
          \ s:fnameescape(results[0]) . join(map(results[2:-1], '"|" . v:val'), '')
  elseif len(results) && len(results[0])
    return 'G' . a:mode . ' ' . s:fnameescape(results[0])
  else
    return ''
  endif
endfunction

function! fugitive#Cfile() abort
  let pre = ''
  let results = s:cfile()
  if empty(results)
    let cfile = expand('<cfile>')
    if &includeexpr =~# '\<v:fname\>'
      sandbox let cfile = eval(substitute(&includeexpr, '\C\<v:fname\>', '\=string(cfile)', 'g'))
    endif
    return cfile
  elseif len(results) > 1
    let pre = '+' . join(map(results[1:-1], 'escape(v:val, " ")'), '\|') . ' '
  endif
  return pre . s:fnameescape(s:Generate(results[0]))
endfunction

" Section: Statusline

function! fugitive#Statusline(...) abort
  let dir = s:Dir(bufnr(''))
  if empty(dir)
    return ''
  endif
  let status = ''
  let commit = s:DirCommitFile(@%)[1]
  if len(commit)
    let status .= ':' . commit[0:6]
  endif
  let status .= '('.FugitiveHead(7, dir).')'
  return '[Git'.status.']'
endfunction

function! fugitive#statusline(...) abort
  return fugitive#Statusline()
endfunction

function! fugitive#head(...) abort
  if empty(s:Dir())
    return ''
  endif

  return fugitive#Head(a:0 ? a:1 : 0)
endfunction

" Section: Folding

function! fugitive#Foldtext() abort
  if &foldmethod !=# 'syntax'
    return foldtext()
  endif

  let line_foldstart = getline(v:foldstart)
  if line_foldstart =~# '^diff '
    let [add, remove] = [-1, -1]
    let filename = ''
    for lnum in range(v:foldstart, v:foldend)
      let line = getline(lnum)
      if filename ==# '' && line =~# '^[+-]\{3\} [abciow12]/'
        let filename = line[6:-1]
      endif
      if line =~# '^+'
        let add += 1
      elseif line =~# '^-'
        let remove += 1
      elseif line =~# '^Binary '
        let binary = 1
      endif
    endfor
    if filename ==# ''
      let filename = matchstr(line_foldstart, '^diff .\{-\} [abciow12]/\zs.*\ze [abciow12]/')
    endif
    if filename ==# ''
      let filename = line_foldstart[5:-1]
    endif
    if exists('binary')
      return 'Binary: '.filename
    else
      return (add<10&&remove<100?' ':'') . add . '+ ' . (remove<10&&add<100?' ':'') . remove . '- ' . filename
    endif
  elseif line_foldstart =~# '^# .*:$'
    let lines = getline(v:foldstart, v:foldend)
    call filter(lines, 'v:val =~# "^#\t"')
    cal map(lines, "s:sub(v:val, '^#\t%(modified: +|renamed: +)=', '')")
    cal map(lines, "s:sub(v:val, '^([[:alpha:] ]+): +(.*)', '\\2 (\\1)')")
    return line_foldstart.' '.join(lines, ', ')
  endif
  return foldtext()
endfunction

function! fugitive#foldtext() abort
  return fugitive#Foldtext()
endfunction

augroup fugitive_folding
  autocmd!
  autocmd User Fugitive
        \ if &filetype =~# '^git\%(commit\)\=$' && &foldtext ==# 'foldtext()' |
        \    set foldtext=fugitive#Foldtext() |
        \ endif
augroup END

" Section: Initialization

function! fugitive#Init() abort
  if exists('#User#FugitiveBoot')
    exe s:DoAutocmd('User FugitiveBoot')
  endif
  let dir = s:Dir()
  if &tags !~# '\.git' && @% !~# '\.git' && !exists('s:tags_warning')
    let actualdir = fugitive#Find('.git/', dir)
    if filereadable(actualdir . 'tags')
      let s:tags_warning = 1
      echohl WarningMsg
      echo "Fugitive .git/tags support removed in favor of `:set tags^=./.git/tags;`"
      echohl NONE
    endif
  endif
  exe s:DoAutocmd('User Fugitive')
endfunction

function! fugitive#is_git_dir(path) abort
  return FugitiveIsGitDir(a:path)
endfunction

function! fugitive#extract_git_dir(path) abort
  return FugitiveExtractGitDir(a:path)
endfunction

function! fugitive#detect(path) abort
  return FugitiveDetect(a:path)
endfunction

" Section: End