Add all the plugins I currently use

7 files changed, 1192 insertions, 0 deletions

diff --git a/start/signify/autoload/sy/debug.vim b/start/signify/autoload/sy/debug.vim
new file mode 100644
index 0000000..5beafd5
--- /dev/null
+++ b/start/signify/autoload/sy/debug.vim
@@ -0,0 +1,48 @@
+" vim: et sw=2 sts=2
+
+scriptencoding utf-8
+
+" Function: #list_active_buffers {{{1
+function! sy#debug#list_active_buffers() abort
+  for b in range(1, bufnr('$'))
+    if !buflisted(b) || empty(getbufvar(b, 'sy'))
+      continue
+    endif
+
+    let sy   = copy(getbufvar(b, 'sy'))
+    let path = remove(sy, 'path')
+
+    echo "\n". path ."\n". repeat('=', strlen(path))
+
+    for k in ['active', 'buffer', 'vcs', 'stats', 'signid']
+      if k == 'stats'
+        echo printf("%10s  =  %d added, %d changed, %d removed\n",
+              \ k,
+              \ sy.stats[0],
+              \ sy.stats[1],
+              \ sy.stats[2])
+      else
+        echo printf("%10s  =  %s\n", k, string(sy[k]))
+      endif
+    endfor
+
+    if empty(sy.hunks)
+      echo printf("%10s  =  %s\n", 'hunks', '[]')
+    else
+      for i in range(len(sy.hunks))
+        if i == 0
+          echo printf("%10s  =  start: %d, end: %d, IDs: %s\n",
+                \ 'hunks',
+                \ sy.hunks[i].start,
+                \ sy.hunks[i].end,
+                \ string(sy.hunks[i].ids))
+        else
+          echo printf("%20s: %d, %s: %d, %s: %s\n",
+                \ 'start', sy.hunks[i].start,
+                \ 'end',   sy.hunks[i].end,
+                \ 'IDs',   string(sy.hunks[i].ids))
+        endif
+      endfor
+    endif
+  endfor
+endfunction
diff --git a/start/signify/autoload/sy/fold.vim b/start/signify/autoload/sy/fold.vim
new file mode 100644
index 0000000..e3afb97
--- /dev/null
+++ b/start/signify/autoload/sy/fold.vim
@@ -0,0 +1,125 @@
+" vim: et sw=2 sts=2
+
+" Function: SignifyFoldExpr {{{1
+function! SignifyFoldExpr(lnum)
+  return s:levels[a:lnum]
+endfunction
+
+" Function: SignifyFoldText {{{1
+function! SignifyFoldText()
+  let linelen = &textwidth ? &textwidth : 80
+  let marker  = &foldmarker[:stridx(&foldmarker, ',')-1]
+  let range   = foldclosedend(v:foldstart) - foldclosed(v:foldstart) + 1
+
+  let left    = substitute(getline(v:foldstart), marker, '', '')
+  let leftlen = len(left)
+
+  let right    = printf('%d [%d]', range, v:foldlevel)
+  let rightlen = len(right)
+
+  let tmp    = strpart(left, 0, linelen - rightlen)
+  let tmplen = len(tmp)
+
+  if leftlen > tmplen
+    let left    = strpart(tmp, 0, tmplen - 4) . '... '
+    let leftlen = tmplen
+  endif
+
+  let fill = repeat(' ', linelen - (leftlen + rightlen))
+
+  " return left . fill . right . repeat(' ', 100)
+  return left . fill . right
+endfunction
+
+" Function: #dispatch {{{1
+function! sy#fold#dispatch(do_tab) abort
+  if a:do_tab
+    call sy#fold#enable(1)
+  else
+    call sy#fold#toggle()
+  endif
+endfunction
+
+" Function: #enable {{{1
+function! sy#fold#enable(do_tab) abort
+  execute sy#util#return_if_no_changes()
+
+  if a:do_tab
+    tabedit %
+  endif
+
+  let [s:context0, s:context1] = get(g:, 'signify_fold_context', [3, 8])
+  let s:levels = s:get_levels(s:get_lines())
+
+  setlocal foldexpr=SignifyFoldExpr(v:lnum)
+  setlocal foldtext=SignifyFoldText()
+  setlocal foldmethod=expr
+  setlocal foldlevel=0
+endfunction
+
+" Function: #disable {{{1
+function! sy#fold#disable() abort
+  let &l:foldmethod = b:sy_folded.method
+  let &l:foldtext = b:sy_folded.text
+  normal! zv
+endfunction
+
+" Function: #toggle {{{1
+function! sy#fold#toggle() abort
+  if exists('b:sy_folded')
+    call sy#fold#disable()
+    if b:sy_folded.method == 'manual'
+      loadview
+    endif
+    unlet b:sy_folded
+  else
+    let b:sy_folded = { 'method': &foldmethod, 'text': &foldtext }
+    if &foldmethod == 'manual'
+      let old_vop = &viewoptions
+      mkview
+      let &viewoptions = old_vop
+    endif
+    call sy#fold#enable(0)
+  endif
+
+  redraw!
+  call sy#start()
+endfunction
+
+" Function: s:get_lines {{{1
+function! s:get_lines() abort
+  let signlist = sy#util#execute('sign place buffer='. b:sy.buffer)
+
+  let lines = []
+  for line in split(signlist, '\n')[2:]
+    call insert(lines, matchlist(line, '\v^\s+line\=(\d+)')[1], 0)
+  endfor
+
+  return reverse(lines)
+endfunction
+" }}}
+
+" Function: s:get_levels {{{1
+function! s:get_levels(lines) abort
+  let levels = {}
+
+  for line in range(1, line('$'))
+    let levels[line] = 2
+  endfor
+
+  for line in a:lines
+    for l in range(line - s:context1, line + s:context1)
+      if (l < 1) || (l > line('$'))
+        continue
+      endif
+      if levels[l] == 2
+        let levels[l] = 1
+      endif
+      for ll in range(line - s:context0, line + s:context0)
+        let levels[ll] = 0
+      endfor
+    endfor
+  endfor
+
+  return levels
+endfunction
diff --git a/start/signify/autoload/sy/highlight.vim b/start/signify/autoload/sy/highlight.vim
new file mode 100644
index 0000000..2ebe507
--- /dev/null
+++ b/start/signify/autoload/sy/highlight.vim
@@ -0,0 +1,94 @@
+" vim: et sw=2 sts=2
+
+scriptencoding utf-8
+
+" Init: values {{{1
+if get(g:, 'signify_sign_show_text', 1)
+  let s:sign_add               = get(g:, 'signify_sign_add',               '+')
+  let s:sign_delete_first_line = get(g:, 'signify_sign_delete_first_line', '‾')
+  let s:sign_change            = get(g:, 'signify_sign_change',            '!')
+  let s:sign_changedelete      = get(g:, 'signify_sign_changedelete',      s:sign_change)
+else
+  let s:sign_add               = ' '
+  let s:sign_delete_first_line = ' '
+  let s:sign_change            = ' '
+  let s:sign_changedelete      = ' '
+endif
+
+let s:sign_show_count = get(g:, 'signify_sign_show_count', 1)
+
+" Function: #setup {{{1
+function! sy#highlight#setup() abort
+  highlight default link SignifyLineAdd             DiffAdd
+  highlight default link SignifyLineDelete          DiffDelete
+  highlight default link SignifyLineDeleteFirstLine SignifyLineDelete
+  highlight default link SignifyLineChange          DiffChange
+  highlight default link SignifyLineChangeDelete    SignifyLineChange
+
+  highlight default link SignifySignAdd             DiffAdd
+  highlight default link SignifySignDelete          DiffDelete
+  highlight default link SignifySignDeleteFirstLine SignifySignDelete
+  highlight default link SignifySignChange          DiffChange
+  highlight default link SignifySignChangeDelete    SignifySignChange
+endfunction
+
+" Function: #line_enable {{{1
+function! sy#highlight#line_enable() abort
+  execute 'sign define SignifyAdd text='. s:sign_add 'texthl=SignifySignAdd linehl=SignifyLineAdd'
+  execute 'sign define SignifyChange text='. s:sign_change 'texthl=SignifySignChange linehl=SignifyLineChange'
+  execute 'sign define SignifyRemoveFirstLine text='. s:sign_delete_first_line 'texthl=SignifySignDeleteFirstLine linehl=SignifyLineDeleteFirstLine'
+
+  if s:sign_show_count
+    let s:sign_changedelete = substitute(s:sign_changedelete, '^.\zs.*', '', '')
+    for n in range(1, 9)
+      execute 'sign define SignifyChangeDelete'. n 'text='. s:sign_changedelete . n 'texthl=SignifySignChangeDelete linehl=SignifyLineChangeDelete'
+    endfor
+    execute 'sign define SignifyChangeDeleteMore text='. s:sign_changedelete .'> texthl=SignifySignChangeDelete linehl=SignifyLineChangeDelete'
+  else
+    for n in range(1, 9)
+      execute 'sign define SignifyChangeDelete'. n 'text='. s:sign_changedelete 'texthl=SignifySignChangeDelete linehl=SignifyLineChangeDelete'
+    endfor
+    execute 'sign define SignifyChangeDeleteMore text='. s:sign_changedelete 'texthl=SignifySignChangeDelete linehl=SignifyLineChangeDelete'
+  endif
+
+  let g:signify_line_highlight = 1
+endfunction
+
+" Function: #line_disable {{{1
+function! sy#highlight#line_disable() abort
+  execute 'sign define SignifyAdd text='. s:sign_add 'texthl=SignifySignAdd linehl='
+  execute 'sign define SignifyChange text='. s:sign_change 'texthl=SignifySignChange linehl='
+  execute 'sign define SignifyRemoveFirstLine text='. s:sign_delete_first_line 'texthl=SignifySignDeleteFirstLine linehl='
+
+  if s:sign_show_count
+    while strwidth(s:sign_changedelete) > 1
+      let s:sign_changedelete = substitute(s:sign_changedelete, '.', '', '')
+    endwhile
+    for n in range(1, 9)
+      execute 'sign define SignifyChangeDelete'. n 'text='. s:sign_changedelete . n 'texthl=SignifySignChangeDelete linehl='
+    endfor
+    execute 'sign define SignifyChangeDeleteMore text='. s:sign_changedelete .'> texthl=SignifySignChangeDelete linehl='
+  else
+    for n in range(1, 9)
+      execute 'sign define SignifyChangeDelete'. n 'text='. s:sign_changedelete 'texthl=SignifySignChangeDelete linehl='
+    endfor
+    execute 'sign define SignifyChangeDeleteMore text='. s:sign_changedelete 'texthl=SignifySignChangeDelete linehl='
+  endif
+
+  let g:signify_line_highlight = 0
+endfunction
+
+" Function: #line_toggle {{{1
+function! sy#highlight#line_toggle() abort
+  if get(g:, 'signify_line_highlight')
+    call sy#highlight#line_disable()
+  else
+    call sy#highlight#line_enable()
+  endif
+
+  redraw!
+  call sy#start()
+endfunction
+" }}}
+
+call sy#highlight#setup()
diff --git a/start/signify/autoload/sy/jump.vim b/start/signify/autoload/sy/jump.vim
new file mode 100644
index 0000000..69756b1
--- /dev/null
+++ b/start/signify/autoload/sy/jump.vim
@@ -0,0 +1,29 @@
+" vim: et sw=2 sts=2
+
+scriptencoding utf-8
+
+" Function: #next_hunk {{{1
+function! sy#jump#next_hunk(count)
+  execute sy#util#return_if_no_changes()
+
+  let lnum = line('.')
+  let hunks = filter(copy(b:sy.hunks), 'v:val.start > lnum')
+  let hunk = get(hunks, a:count - 1, get(hunks, -1, {}))
+
+  if !empty(hunk)
+    execute 'sign jump '. hunk.ids[0] .' buffer='. b:sy.buffer
+  endif
+endfunction
+
+" Function: #prev_hunk {{{1
+function! sy#jump#prev_hunk(count)
+  execute sy#util#return_if_no_changes()
+
+  let lnum = line('.')
+  let hunks = filter(copy(b:sy.hunks), 'v:val.start < lnum')
+  let hunk = get(hunks, 0 - a:count, get(hunks, 0, {}))
+
+  if !empty(hunk)
+    execute 'sign jump '. hunk.ids[0] .' buffer='. b:sy.buffer
+  endif
+endfunction
diff --git a/start/signify/autoload/sy/repo.vim b/start/signify/autoload/sy/repo.vim
new file mode 100644
index 0000000..64bf07a
--- /dev/null
+++ b/start/signify/autoload/sy/repo.vim
@@ -0,0 +1,512 @@
+" vim: et sw=2 sts=2
+
+scriptencoding utf-8
+
+" Function: #detect {{{1
+function! sy#repo#detect() abort
+  for vcs in s:vcs_list
+    let b:sy.detecting += 1
+    call sy#repo#get_diff_start(vcs)
+  endfor
+endfunction
+
+" Function: s:callback_nvim_stdout{{{1
+function! s:callback_nvim_stdout(_job_id, data, _event) dict abort
+  if empty(self.stdoutbuf) || empty(self.stdoutbuf[-1])
+    let self.stdoutbuf += a:data
+  else
+    let self.stdoutbuf = self.stdoutbuf[:-2]
+          \ + [self.stdoutbuf[-1] . get(a:data, 0, '')]
+          \ + a:data[1:]
+  endif
+endfunction
+
+" Function: s:callback_nvim_exit {{{1
+function! s:callback_nvim_exit(_job_id, exitval, _event) dict abort
+  call s:job_exit(self.bufnr, self.vcs, a:exitval, self.stdoutbuf)
+endfunction
+
+" Function: s:callback_vim_stdout {{{1
+function! s:callback_vim_stdout(_job_id, data) dict abort
+  let self.stdoutbuf += [a:data]
+endfunction
+
+" Function: s:callback_vim_close {{{1
+function! s:callback_vim_close(channel) dict abort
+  let job = ch_getjob(a:channel)
+  while 1
+    if job_status(job) == 'dead'
+      let exitval = job_info(job).exitval
+      break
+    endif
+    sleep 10m
+  endwhile
+  call s:job_exit(self.bufnr, self.vcs, exitval, self.stdoutbuf)
+endfunction
+
+" Function: s:job_exit {{{1
+function! s:job_exit(bufnr, vcs, exitval, diff) abort
+  call sy#verbose('job_exit()', a:vcs)
+  let sy = getbufvar(a:bufnr, 'sy')
+  if empty(sy)
+    call sy#verbose(printf('No b:sy found for %s', bufname(a:bufnr)), a:vcs)
+    return
+  elseif !empty(sy.updated_by) && sy.updated_by != a:vcs
+    call sy#verbose(printf('Signs already got updated by %s.', sy.updated_by), a:vcs)
+    return
+  elseif empty(sy.vcs) && sy.active
+    let sy.detecting -= 1
+  endif
+  call sy#repo#get_diff_{a:vcs}(sy, a:exitval, a:diff)
+  call setbufvar(a:bufnr, 'sy_job_id_'.a:vcs, 0)
+endfunction
+
+" Function: sy#get_diff_start {{{1
+function! sy#repo#get_diff_start(vcs) abort
+  call sy#verbose('get_diff_start()', a:vcs)
+
+  let job_id = get(b:, 'sy_job_id_'.a:vcs)
+  " Neovim
+  if has('nvim')
+    if job_id
+      silent! call jobstop(job_id)
+    endif
+
+    let [cmd, options] = s:initialize_job(a:vcs)
+    let [cwd, chdir] = sy#util#chdir()
+
+    call sy#verbose(['CMD: '. string(cmd), 'CMD DIR:  '. b:sy.info.dir, 'ORIG DIR: '. cwd], a:vcs)
+
+    try
+      execute chdir fnameescape(b:sy.info.dir)
+    catch
+      echohl ErrorMsg
+      echomsg 'signify: Changing directory failed: '. b:sy.info.dir
+      echohl NONE
+      return
+    endtry
+    let b:sy_job_id_{a:vcs} = jobstart(cmd, extend(options, {
+          \ 'on_stdout': function('s:callback_nvim_stdout'),
+          \ 'on_exit':   function('s:callback_nvim_exit'),
+          \ }))
+    execute chdir fnameescape(cwd)
+
+  " Newer Vim
+  elseif has('patch-7.4.1967')
+    if type(job_id) != type(0)
+      silent! call job_stop(job_id)
+    endif
+
+    let [cmd, options] = s:initialize_job(a:vcs)
+    let [cwd, chdir] = sy#util#chdir()
+
+    call sy#verbose(['CMD: '. string(cmd), 'CMD DIR:  '. b:sy.info.dir, 'ORIG DIR: '. cwd], a:vcs)
+
+    try
+      execute chdir fnameescape(b:sy.info.dir)
+    catch
+      echohl ErrorMsg
+      echomsg 'signify: Changing directory failed: '. b:sy.info.dir
+      echohl NONE
+      return
+    endtry
+    let opts = {
+          \ 'in_io':    'null',
+          \ 'out_cb':   function('s:callback_vim_stdout', options),
+          \ 'close_cb': function('s:callback_vim_close', options),
+          \ }
+    let b:sy_job_id_{a:vcs} = job_start(cmd, opts)
+    execute chdir fnameescape(cwd)
+
+  " Older Vim
+  else
+    let diff = split(s:run(a:vcs), '\n')
+    call sy#repo#get_diff_{a:vcs}(b:sy, v:shell_error, diff)
+  endif
+endfunction
+
+" Function: s:get_diff_end {{{1
+function! s:get_diff_end(sy, found_diff, vcs, diff) abort
+  call sy#verbose('get_diff_end()', a:vcs)
+  if a:found_diff
+    if index(a:sy.vcs, a:vcs) == -1
+      let a:sy.vcs += [a:vcs]
+    endif
+    call sy#set_signs(a:sy, a:vcs, a:diff)
+  else
+    call sy#verbose('No valid diff found. Disabling this VCS.', a:vcs)
+  endif
+endfunction
+
+" Function: #get_diff_git {{{1
+function! sy#repo#get_diff_git(sy, exitval, diff) abort
+  call sy#verbose('get_diff_git()', 'git')
+  let [found_diff, diff] = a:exitval ? [0, []] : [1, a:diff]
+  call s:get_diff_end(a:sy, found_diff, 'git', diff)
+endfunction
+
+" Function: #get_diff_hg {{{1
+function! sy#repo#get_diff_hg(sy, exitval, diff) abort
+  call sy#verbose('get_diff_hg()', 'hg')
+  let [found_diff, diff] = a:exitval ? [0, []] : [1, a:diff]
+  call s:get_diff_end(a:sy, found_diff, 'hg', diff)
+endfunction
+
+" Function: #get_diff_svn {{{1
+function! sy#repo#get_diff_svn(sy, exitval, diff) abort
+  call sy#verbose('get_diff_svn()', 'svn')
+  let [found_diff, diff] = a:exitval ? [0, []] : [1, a:diff]
+  call s:get_diff_end(a:sy, found_diff, 'svn', diff)
+endfunction
+
+" Function: #get_diff_bzr {{{1
+function! sy#repo#get_diff_bzr(sy, exitval, diff) abort
+  call sy#verbose('get_diff_bzr()', 'bzr')
+  let [found_diff, diff] = (a:exitval =~ '[012]') ? [1, a:diff] : [0, []]
+  call s:get_diff_end(a:sy, found_diff, 'bzr', diff)
+endfunction
+
+" Function: #get_diff_darcs {{{1
+function! sy#repo#get_diff_darcs(sy, exitval, diff) abort
+  call sy#verbose('get_diff_darcs()', 'darcs')
+  let [found_diff, diff] = a:exitval ? [0, []] : [1, a:diff]
+  call s:get_diff_end(a:sy, found_diff, 'darcs', diff)
+endfunction
+
+" Function: #get_diff_fossil {{{1
+function! sy#repo#get_diff_fossil(sy, exitval, diff) abort
+  call sy#verbose('get_diff_fossil()', 'fossil')
+  let [found_diff, diff] = a:exitval ? [0, []] : [1, a:diff]
+  call s:get_diff_end(a:sy, found_diff, 'fossil', diff)
+endfunction
+
+" Function: #get_diff_cvs {{{1
+function! sy#repo#get_diff_cvs(sy, exitval, diff) abort
+  call sy#verbose('get_diff_cvs()', 'cvs')
+  let [found_diff, diff] = [0, []]
+  if a:exitval == 1
+    for diffline in a:diff
+      if diffline =~ '^+++'
+        let [found_diff, diff] = [1, a:diff]
+        break
+      endif
+    endfor
+  elseif a:exitval == 0 && len(a:diff) == 0
+    let found_diff = 1
+  endif
+  call s:get_diff_end(a:sy, found_diff, 'cvs', diff)
+endfunction
+
+" Function: #get_diff_rcs {{{1
+function! sy#repo#get_diff_rcs(sy, exitval, diff) abort
+  call sy#verbose('get_diff_rcs()', 'rcs')
+  let [found_diff, diff] = a:exitval == 2 ? [0, []] : [1, a:diff]
+  call s:get_diff_end(a:sy, found_diff, 'rcs', diff)
+endfunction
+
+" Function: #get_diff_accurev {{{1
+function! sy#repo#get_diff_accurev(sy, exitval, diff) abort
+  call sy#verbose('get_diff_accurev()', 'accurev')
+  let [found_diff, diff] = (a:exitval >= 2) ? [0, []] : [1, a:diff]
+  call s:get_diff_end(a:sy, found_diff, 'accurev', diff)
+endfunction
+
+" Function: #get_diff_perforce {{{1
+function! sy#repo#get_diff_perforce(sy, exitval, diff) abort
+  call sy#verbose('get_diff_perforce()', 'perforce')
+  let [found_diff, diff] = a:exitval ? [0, []] : [1, a:diff]
+  call s:get_diff_end(a:sy, found_diff, 'perforce', diff)
+endfunction
+
+" Function: #get_diff_tfs {{{1
+function! sy#repo#get_diff_tfs(sy, exitval, diff) abort
+  call sy#verbose('get_diff_tfs()', 'tfs')
+  let [found_diff, diff] = a:exitval ? [0, []] : [1, s:strip_context(a:diff)]
+  call s:get_diff_end(a:sy, found_diff, 'tfs', diff)
+endfunction
+
+" Function: #get_stats {{{1
+function! sy#repo#get_stats() abort
+  return exists('b:sy') ? b:sy.stats : [-1, -1, -1]
+endfunction
+
+" Function: #debug_detection {{{1
+function! sy#repo#debug_detection()
+  if !exists('b:sy')
+    echomsg 'signify: I cannot detect any changes!'
+    return
+  endif
+
+  for vcs in s:vcs_list
+    let cmd = s:expand_cmd(vcs, g:signify_vcs_cmds)
+    echohl Statement
+    echo cmd
+    echo repeat('=', len(cmd))
+    echohl NONE
+
+    let diff = s:run(vcs)
+    if v:shell_error
+      echohl ErrorMsg
+      echo diff
+      echohl NONE
+    else
+      echo empty(diff) ? "<none>" : diff
+    endif
+    echo "\n"
+  endfor
+endfunction
+
+" Function: #diffmode {{{1
+function! sy#repo#diffmode(do_tab) abort
+  execute sy#util#return_if_no_changes()
+
+  let vcs = b:sy.updated_by
+  if !has_key(g:signify_vcs_cmds_diffmode, vcs)
+    echomsg 'SignifyDiff has no support for: '. vcs
+    echomsg 'Open an issue for it at: https://github.com/mhinz/vim-signify/issues'
+    return
+  endif
+  let cmd = s:expand_cmd(vcs, g:signify_vcs_cmds_diffmode)
+  call sy#verbose('SignifyDiff: '. cmd, vcs)
+  let ft = &filetype
+  let fenc = &fenc
+  if a:do_tab
+    tabedit %
+  endif
+  diffthis
+  let [cwd, chdir] = sy#util#chdir()
+  try
+    execute chdir fnameescape(b:sy.info.dir)
+    leftabove vnew
+    if has('iconv')
+      silent put =iconv(system(cmd), fenc, &enc)
+    else
+      silent put =system(cmd)
+    endif
+  finally
+    execute chdir fnameescape(cwd)
+  endtry
+  silent 1delete
+  set buftype=nofile bufhidden=wipe nomodified
+  let &filetype = ft
+  diffthis
+  wincmd p
+  normal! ]czt
+endfunction
+
+" Function: s:initialize_job {{{1
+function! s:initialize_job(vcs) abort
+  let vcs_cmd = s:expand_cmd(a:vcs, g:signify_vcs_cmds)
+  if has('win32')
+    if has('nvim')
+      let cmd = &shell =~ '\v%(cmd|powershell)' ? vcs_cmd : ['sh', '-c', vcs_cmd]
+    else
+      if &shell =~ 'cmd'
+        let cmd = vcs_cmd
+      elseif empty(&shellxquote)
+        let cmd = join([&shell, &shellcmdflag, &shellquote, vcs_cmd, &shellquote])
+      else
+        let cmd = join([&shell, &shellcmdflag, &shellxquote, vcs_cmd, &shellxquote])
+      endif
+    endif
+  else
+    let cmd = ['sh', '-c', vcs_cmd]
+  endif
+  let options = {
+        \ 'stdoutbuf':   [],
+        \ 'vcs':         a:vcs,
+        \ 'bufnr':       bufnr('%'),
+        \ }
+  return [cmd, options]
+endfunction
+
+" Function: s:get_vcs_path {{{1
+function! s:get_vcs_path(vcs) abort
+  return (a:vcs =~# '\v(git|cvs|accurev|tfs)') ? b:sy.info.file : b:sy.info.path
+endfunction
+
+" Function: s:expand_cmd {{{1
+function! s:expand_cmd(vcs, vcs_cmds) abort
+  let cmd = a:vcs_cmds[a:vcs]
+  let cmd = s:replace(cmd, '%f', s:get_vcs_path(a:vcs))
+  let cmd = s:replace(cmd, '%d', s:difftool)
+  let cmd = s:replace(cmd, '%n', s:devnull)
+  return cmd
+endfunction
+
+" Function: s:run {{{1
+function! s:run(vcs)
+  let [cwd, chdir] = sy#util#chdir()
+  try
+    execute chdir fnameescape(b:sy.info.dir)
+    let ret = system(s:expand_cmd(a:vcs, g:signify_vcs_cmds))
+  catch
+    " This exception message can be seen via :SignifyDebugUnknown.
+    " E.g. unquoted VCS programs in vcd_cmds can lead to E484.
+    let ret = v:exception .' at '. v:throwpoint
+  finally
+    execute chdir fnameescape(cwd)
+    return ret
+  endtry
+endfunction
+
+" Function: s:replace {{{1
+function! s:replace(cmd, pat, sub)
+  let parts = split(a:cmd, a:pat, 1)
+  return join(parts, a:sub)
+endfunction
+
+" Function: s:strip_context {{{1
+function! s:strip_context(context)
+  let diff = []
+  let hunk = []
+  let state = 0
+  let lines = a:context
+  let linenr = 0
+
+  while linenr < len(lines)
+    let line = lines[linenr]
+
+    if state == 0
+      if line =~ "^@@ "
+        let tokens = matchlist(line, '^@@ -\v(\d+),?(\d*) \+(\d+),?(\d*)')
+        let old_line = str2nr(tokens[1])
+        let new_line = str2nr(tokens[3])
+        let old_count = empty(tokens[2]) ? 1 : str2nr(tokens[2])
+        let new_count = empty(tokens[4]) ? 1 : str2nr(tokens[4])
+        let hunk = []
+        let state = 1
+      else
+        call add(diff,line)
+      endif
+      let linenr += 1
+    elseif index([1,2,3],state) >= 0 && index(['\','/'],line[0]) >= 0
+      let linenr += 1
+      call add(hunk,line)
+    elseif state == 1
+      if line[0] == ' '
+        let old_line += 1
+        let new_line += 1
+        let old_count -= 1
+        let new_count -= 1
+        let linenr += 1
+      else
+        let old_count_part = 0
+        let new_count_part = 0
+        let state = 2
+      endif
+    elseif state == 2
+      if line[0] == '-'
+        call add(hunk,line)
+        let old_count_part += 1
+        let linenr += 1
+      else
+        let state = 3
+      endif
+    elseif state == 3
+      if line[0] == '+'
+        call add(hunk,line)
+        let new_count_part += 1
+        let linenr += 1
+      else
+        call add(diff, printf("@@ -%d%s +%d%s @@",(old_count_part == 0 && old_line > 0) ? old_line -1 : old_line, old_count_part == 1 ? "" : printf(",%d", old_count_part), (new_count_part == 0 && new_line > 0) ? new_line - 1 : new_line, new_count_part == 1 ? "" : printf(",%d", new_count_part)))
+        let diff += hunk
+        let hunk = []
+        let old_count -= old_count_part
+        let new_count -= new_count_part
+        let old_line += old_count_part
+        let new_line += new_count_part
+        let state = 1
+      endif
+    endif
+
+    if state > 0 && new_count <= 0 && old_count <= 0
+      if len(hunk) > 0
+        call add(diff, printf("@@ -%d%s +%d%s @@",(old_count_part == 0 && old_line > 0) ? old_line -1 : old_line, old_count_part == 1 ? "" : printf(",%d", old_count_part), (new_count_part == 0 && new_line > 0) ? new_line - 1 : new_line, new_count_part == 1 ? "" : printf(",%d", new_count_part)))
+        let diff = diff + hunk
+        let hunk = []
+      endif
+      let state = 0
+    endif
+  endwhile
+  if len(hunk) > 0
+    call add(diff, printf("@@ -%d%s +%d%s @@",(old_count_part == 0 && old_line > 0) ? old_line -1 : old_line, old_count_part == 1 ? "" : printf(",%d", old_count_part), (new_count_part == 0 && new_line > 0) ? new_line - 1 : new_line, new_count_part == 1 ? "" : printf(",%d", new_count_part)))
+    let diff = diff + hunk
+    let hunk = []
+  endif
+  return diff
+endfunction
+
+" Variables {{{1
+let s:difftool = get(g:, 'signify_difftool', 'diff')
+if executable(s:difftool)
+  let s:vcs_dict = {
+        \ 'git':      'git',
+        \ 'hg':       'hg',
+        \ 'svn':      'svn',
+        \ 'darcs':    'darcs',
+        \ 'bzr':      'bzr',
+        \ 'fossil':   'fossil',
+        \ 'cvs':      'cvs',
+        \ 'rcs':      'rcsdiff',
+        \ 'accurev':  'accurev',
+        \ 'perforce': 'p4',
+        \ 'tfs':      'tf'
+        \ }
+else
+  call sy#verbose('No "diff" executable found. Disable support for svn, darcs, bzr.')
+  let s:vcs_dict = {
+        \ 'git':      'git',
+        \ 'hg':       'hg',
+        \ 'fossil':   'fossil',
+        \ 'cvs':      'cvs',
+        \ 'rcs':      'rcsdiff',
+        \ 'accurev':  'accurev',
+        \ 'perforce': 'p4',
+        \ 'tfs':      'tf'
+        \ }
+endif
+
+let s:vcs_list = get(g:, 'signify_vcs_list', [])
+if empty(s:vcs_list)
+  let s:vcs_list = keys(filter(s:vcs_dict, 'executable(v:val)'))
+endif
+
+let s:default_vcs_cmds = {
+      \ 'git':      'git diff --no-color --no-ext-diff -U0 -- %f',
+      \ 'hg':       'hg diff --color=never --config aliases.diff= --nodates -U0 -- %f',
+      \ 'svn':      'svn diff --diff-cmd %d -x -U0 -- %f',
+      \ 'bzr':      'bzr diff --using %d --diff-options=-U0 -- %f',
+      \ 'darcs':    'darcs diff --no-pause-for-gui --no-unified --diff-opts=-U0 -- %f',
+      \ 'fossil':   'fossil diff --unified -c 0 -- %f',
+      \ 'cvs':      'cvs diff -U0 -- %f',
+      \ 'rcs':      'rcsdiff -U0 %f 2>%n',
+      \ 'accurev':  'accurev diff %f -- -U0',
+      \ 'perforce': 'p4 info '. sy#util#shell_redirect('%n') . (has('win32') ? ' &&' : ' && env P4DIFF= P4COLORS=') .' p4 diff -du0 %f',
+      \ 'tfs':      'tf diff -version:W -noprompt -format:Unified %f'
+      \ }
+
+let s:default_vcs_cmds_diffmode = {
+      \ 'git':      'git show HEAD:./%f',
+      \ 'hg':       'hg cat %f',
+      \ 'svn':      'svn cat %f',
+      \ 'bzr':      'bzr cat %f',
+      \ 'darcs':    'darcs show contents -- %f',
+      \ 'fossil':   'fossil cat %f',
+      \ 'cvs':      'cvs up -p -- %f 2>%n',
+      \ 'perforce': 'p4 print %f',
+      \ }
+
+if exists('g:signify_vcs_cmds')
+  call extend(g:signify_vcs_cmds, s:default_vcs_cmds, 'keep')
+else
+  let g:signify_vcs_cmds = s:default_vcs_cmds
+endif
+if exists('g:signify_vcs_cmds_diffmode')
+  call extend(g:signify_vcs_cmds_diffmode, s:default_vcs_cmds_diffmode, 'keep')
+else
+  let g:signify_vcs_cmds_diffmode = s:default_vcs_cmds_diffmode
+endif
+
+let s:difftool = sy#util#escape(s:difftool)
+let s:devnull  = has('win32') || has ('win64') ? 'NUL' : '/dev/null'
diff --git a/start/signify/autoload/sy/sign.vim b/start/signify/autoload/sy/sign.vim
new file mode 100644
index 0000000..23b7038
--- /dev/null
+++ b/start/signify/autoload/sy/sign.vim
@@ -0,0 +1,275 @@
+" vim: et sw=2 sts=2
+
+scriptencoding utf-8
+
+" Init: values {{{1
+if get(g:, 'signify_sign_show_text', 1)
+  let s:sign_delete = get(g:, 'signify_sign_delete', '_')
+else
+  let s:sign_delete = ' '
+endif
+
+let s:sign_show_count  = get(g:, 'signify_sign_show_count', 1)
+let s:delete_highlight = ['', 'SignifyLineDelete']
+
+" Function: #id_next {{{1
+function! sy#sign#id_next(sy) abort
+  let id = a:sy.signid
+  let a:sy.signid += 1
+  return id
+endfunction
+
+" Function: #get_current_signs {{{1
+function! sy#sign#get_current_signs(sy) abort
+  let a:sy.internal = {}
+  let a:sy.external = {}
+
+  let signlist = sy#util#execute('sign place buffer='. a:sy.buffer)
+
+  for signline in split(signlist, '\n')[2:]
+    let tokens = matchlist(signline, '\v^\s+\S+\=(\d+)\s+\S+\=(\d+)\s+\S+\=(.*)$')
+    let line   = str2nr(tokens[1])
+    let id     = str2nr(tokens[2])
+    let type   = tokens[3]
+
+    if type =~# '^Signify'
+      " Handle ambiguous signs. Assume you have signs on line 3 and 4.
+      " Removing line 3 would lead to the second sign to be shifted up
+      " to line 3. Now there are still 2 signs, both one line 3.
+      if has_key(a:sy.internal, line)
+        execute 'sign unplace' a:sy.internal[line].id 'buffer='.a:sy.buffer
+      endif
+      let a:sy.internal[line] = { 'type': type, 'id': id }
+    else
+      let a:sy.external[line] = id
+    endif
+  endfor
+endfunction
+
+
+" Function: #process_diff {{{1
+function! sy#sign#process_diff(sy, vcs, diff) abort
+  let a:sy.signtable             = {}
+  let a:sy.hunks                 = []
+  let [added, modified, deleted] = [0, 0, 0]
+
+  call sy#sign#get_current_signs(a:sy)
+
+  " Determine where we have to put our signs.
+  for line in filter(a:diff, 'v:val =~ "^@@ "')
+    let a:sy.lines = []
+    let ids        = []
+
+    let tokens = matchlist(line, '^@@ -\v(\d+),?(\d*) \+(\d+),?(\d*)')
+
+    let old_line = str2nr(tokens[1])
+    let new_line = str2nr(tokens[3])
+
+    let old_count = empty(tokens[2]) ? 1 : str2nr(tokens[2])
+    let new_count = empty(tokens[4]) ? 1 : str2nr(tokens[4])
+
+    " Workaround for non-conventional diff output in older Fossil versions:
+    " https://fossil-scm.org/forum/forumpost/834ce0f1e1
+    " Fixed as of: https://fossil-scm.org/index.html/info/7fd2a3652ea7368a
+    if a:vcs == 'fossil' && new_line == 0
+      let new_line = old_line - 1 - deleted
+    endif
+
+    " 2 lines added:
+
+    " @@ -5,0 +6,2 @@ this is line 5
+    " +this is line 5
+    " +this is line 5
+    if (old_count == 0) && (new_count >= 1)
+      let added += new_count
+      let offset = 0
+      while offset < new_count
+        let line    = new_line + offset
+        let offset += 1
+        if s:external_sign_present(a:sy, line) | continue | endif
+        call add(ids, s:add_sign(a:sy, line, 'SignifyAdd'))
+      endwhile
+
+    " 2 lines removed:
+
+    " @@ -6,2 +5,0 @@ this is line 5
+    " -this is line 6
+    " -this is line 7
+    elseif (old_count >= 1) && (new_count == 0)
+      if s:external_sign_present(a:sy, new_line) | continue | endif
+      let deleted += old_count
+      if new_line == 0
+        call add(ids, s:add_sign(a:sy, 1, 'SignifyRemoveFirstLine'))
+      elseif s:sign_show_count
+        let text = s:sign_delete . (old_count <= 99 ? old_count : '>')
+        while strwidth(text) > 2
+          let text = substitute(text, '.', '', '')
+        endwhile
+        call add(ids, s:add_sign(a:sy, new_line, 'SignifyDelete'. old_count, text))
+      else
+        call add(ids, s:add_sign(a:sy, new_line, 'SignifyDeleteMore', s:sign_delete))
+      endif
+
+    " 2 lines changed:
+
+    " @@ -5,2 +5,2 @@ this is line 4
+    " -this is line 5
+    " -this is line 6
+    " +this os line 5
+    " +this os line 6
+    elseif old_count == new_count
+      let modified += old_count
+      let offset    = 0
+      while offset < new_count
+        let line    = new_line + offset
+        let offset += 1
+        if s:external_sign_present(a:sy, line) | continue | endif
+        call add(ids, s:add_sign(a:sy, line, 'SignifyChange'))
+      endwhile
+    else
+
+      " 2 lines changed; 2 lines removed:
+
+      " @@ -5,4 +5,2 @@ this is line 4
+      " -this is line 5
+      " -this is line 6
+      " -this is line 7
+      " -this is line 8
+      " +this os line 5
+      " +this os line 6
+      if old_count > new_count
+        let modified += new_count
+        let removed   = old_count - new_count
+        let deleted  += removed
+        let offset    = 0
+        while offset < new_count - 1
+          let line    = new_line + offset
+          let offset += 1
+          if s:external_sign_present(a:sy, line) | continue | endif
+          call add(ids, s:add_sign(a:sy, line, 'SignifyChange'))
+        endwhile
+        let line = new_line + offset
+        if s:external_sign_present(a:sy, line) | continue | endif
+        call add(ids, s:add_sign(a:sy, line, (removed > 9)
+              \ ? 'SignifyChangeDeleteMore'
+              \ : 'SignifyChangeDelete'. removed))
+
+      " lines changed and added:
+
+      " @@ -5 +5,3 @@ this is line 4
+      " -this is line 5
+      " +this os line 5
+      " +this is line 42
+      " +this is line 666
+      else
+        let modified += old_count
+        let offset    = 0
+        while offset < old_count
+          let line    = new_line + offset
+          let offset += 1
+          if s:external_sign_present(a:sy, line) | continue | endif
+          call add(ids, s:add_sign(a:sy, line, 'SignifyChange'))
+        endwhile
+        while offset < new_count
+          let added  += 1
+          let line    = new_line + offset
+          let offset += 1
+          if s:external_sign_present(a:sy, line) | continue | endif
+          call add(ids, s:add_sign(a:sy, line, 'SignifyAdd'))
+        endwhile
+      endif
+    endif
+
+    if !empty(ids)
+      call add(a:sy.hunks, {
+            \ 'ids'  : ids,
+            \ 'start': a:sy.lines[0],
+            \ 'end'  : a:sy.lines[-1] })
+    endif
+  endfor
+
+  " Remove obsoleted signs.
+  for line in filter(keys(a:sy.internal), '!has_key(a:sy.signtable, v:val)')
+    execute 'sign unplace' a:sy.internal[line].id 'buffer='.a:sy.buffer
+  endfor
+
+  if has('gui_macvim') && has('gui_running') && mode() == 'n'
+    " MacVim needs an extra kick in the butt, when setting signs from the
+    " exit handler. :redraw would trigger a "hanging cursor" issue.
+    call feedkeys("\<c-l>", 'n')
+  endif
+
+  if empty(a:sy.updated_by) && empty(a:sy.hunks)
+    call sy#verbose('Successful exit value, but no diff. Keep VCS for time being.', a:vcs)
+    return
+  endif
+
+  call sy#verbose('Signs updated.', a:vcs)
+  let a:sy.updated_by = a:vcs
+  if len(a:sy.vcs) > 1
+    call sy#verbose('Disable all other VCS.', a:vcs)
+    let a:sy.vcs = [a:vcs]
+  endif
+
+  let a:sy.stats = [added, modified, deleted]
+endfunction
+
+" Function: #remove_all_signs {{{1
+function! sy#sign#remove_all_signs(bufnr) abort
+  let sy = getbufvar(a:bufnr, 'sy')
+
+  for hunk in sy.hunks
+    for id in hunk.ids
+      execute 'sign unplace' id 'buffer='.a:bufnr
+    endfor
+  endfor
+
+  let sy.hunks = []
+endfunction
+
+" Function: s:add_sign {{{1
+function! s:add_sign(sy, line, type, ...) abort
+  call add(a:sy.lines, a:line)
+  let a:sy.signtable[a:line] = 1
+
+  if has_key(a:sy.internal, a:line)
+    " There is a sign on this line already.
+    if a:type == a:sy.internal[a:line].type
+      " Keep current sign since the new one is of the same type.
+      return a:sy.internal[a:line].id
+    else
+      " Update sign by overwriting the ID of the current sign.
+      let id = a:sy.internal[a:line].id
+    endif
+  endif
+
+  if !exists('id')
+    let id = sy#sign#id_next(a:sy)
+  endif
+
+  if a:type =~# 'SignifyDelete'
+    execute printf('sign define %s text=%s texthl=SignifySignDelete linehl=%s',
+          \ a:type,
+          \ a:1,
+          \ s:delete_highlight[g:signify_line_highlight])
+  endif
+  execute printf('sign place %d line=%d name=%s buffer=%s',
+        \ id,
+        \ a:line,
+        \ a:type,
+        \ a:sy.buffer)
+
+  return id
+endfunction
+
+" Function: s:external_sign_present {{{1
+function! s:external_sign_present(sy, line) abort
+  if has_key(a:sy.external, a:line)
+    if has_key(a:sy.internal, a:line)
+      " Remove Sy signs from lines with other signs.
+      execute 'sign unplace' a:sy.internal[a:line].id 'buffer='.a:sy.buffer
+    endif
+    return 1
+  endif
+endfunction
+
diff --git a/start/signify/autoload/sy/util.vim b/start/signify/autoload/sy/util.vim
new file mode 100644
index 0000000..43a9cc6
--- /dev/null
+++ b/start/signify/autoload/sy/util.vim
@@ -0,0 +1,109 @@
+" vim: et sw=2 sts=2
+
+scriptencoding utf-8
+
+" Function: #escape {{{1
+function! sy#util#escape(path) abort
+  if exists('+shellslash')
+    let old_ssl = &shellslash
+    if fnamemodify(&shell, ':t') == 'cmd.exe'
+      set noshellslash
+    else
+      set shellslash
+    endif
+  endif
+
+  let path = shellescape(a:path)
+
+  if exists('old_ssl')
+    let &shellslash = old_ssl
+  endif
+
+  return path
+endfunction
+
+" Function: #refresh_windows {{{1
+function! sy#util#refresh_windows() abort
+  if exists('*win_getid')
+    let winid = win_getid()
+  else
+    let winnr = winnr()
+  endif
+
+  if !get(g:, 'signify_cmdwin_active')
+    keepjumps windo if exists('b:sy') | call sy#start() | endif
+  endif
+
+  if exists('winid')
+    call win_gotoid(winid)
+  else
+    execute winnr .'wincmd w'
+  endif
+endfunction
+
+" Function: #hunk_text_object {{{1
+function! sy#util#hunk_text_object(emptylines) abort
+  execute sy#util#return_if_no_changes()
+
+  let lnum  = line('.')
+  let hunks = filter(copy(b:sy.hunks), 'v:val.start <= lnum && v:val.end >= lnum')
+
+  if empty(hunks)
+    echomsg 'signify: Here is no hunk.'
+    return
+  endif
+
+  execute hunks[0].start
+  normal! V
+
+  if a:emptylines
+    let lnum = hunks[0].end
+    while getline(lnum+1) =~ '^$'
+      let lnum += 1
+    endwhile
+    execute lnum
+  else
+    execute hunks[0].end
+  endif
+endfunction
+
+" Function: #shell_redirect {{{1
+function! sy#util#shell_redirect(path) abort
+  " if shellredir contains a %s it is replaced with the path
+  " otherwise, just append it (from :help shellredir:
+  "   The name of the temporary file can be represented by '%s' if necessary
+  "   (the file name is appended automatically if no %s appears in the value
+  "   of this option)
+  if &shellredir =~# '%s'
+    return substitute(&shellredir, '\C%s', a:path, 'g')
+  else
+    return &shellredir .' '. a:path
+  endif
+endfunction
+
+" Function: #chdir {{{1
+function! sy#util#chdir() abort
+  let chdir = haslocaldir()
+        \ ? 'lcd'
+        \ : (exists(':tcd') && haslocaldir(-1, 0)) ? 'tcd' : 'cd'
+  return [getcwd(), chdir]
+endfunction
+
+" Function: #has_changes {{{1
+function! sy#util#return_if_no_changes() abort
+  if !exists('b:sy') || empty(b:sy.hunks)
+    echomsg 'signify: There are no changes.'
+    return 'return'
+  endif
+  return ''
+endfunction
+
+" Function: #execute {{{1
+function! sy#util#execute(cmd) abort
+  let lang = v:lang
+  redir => output
+    silent! execute a:cmd
+  redir END
+  silent! execute 'language message' lang
+  return output
+endfunction