Support "copied:" lines in :Gstatus

Fixes #68.

.gitignore

@@ -0,0 +1 @@
+/doc/tags

README.markdown

@@ -11,13 +11,14 @@ version of the file side by side with the working tree version and use
 Vim's diff handling capabilities to stage a subset of the file's
 changes.
 
-Bring up the output of `git status` with `:Gstatus`.  Use `-` to
+Bring up the output of `git status` with `:Gstatus`.  Press `-` to
 `add`/`reset` a file's changes, or `p` to `add`/`reset` `--patch` that
 mofo.  And guess what `:Gcommit` does!
 
 `:Gblame` brings up an interactive vertical split with `git blame`
 output.  Press enter on a line to reblame the file as it stood in that
-commit, or `o` to open that commit in a split.
+commit, or `o` to open that commit in a split.  When you're done, use
+`:Gedit` in the historic buffer to go back to the work tree version.
 
 `:Gmove` does a `git mv` on a file and simultaneously renames the
 buffer.  `:Gremove` does a `git rm` on a file and simultaneously deletes
@@ -35,6 +36,10 @@ and you never get any warnings about the file changing outside Vim.
 making it like `git add` when called from a work tree file and like
 `git checkout` when called from the index or a blob in history.
 
+Use `:Gbrowse` to open the current file on GitHub, with optional line
+range (try it in visual mode!).  If your current repository isn't on
+GitHub, `git instaweb` will be spun up instead.
+
 Add `%{fugitive#statusline()}` to `'statusline'` to get an indicator
 with the current branch in (surprise!) your statusline.
 
@@ -43,3 +48,23 @@ Oh, and of course there's `:Git` for running any arbitrary command.
 Like fugitive.vim? Follow the repository on
 [GitHub](http://github.com/tpope/vim-fugitive) and vote for it on
 [vim.org](http://www.vim.org/scripts/script.php?script_id=2975).
+
+FAQ
+---
+
+> I installed the plugin and started Vim.  Why don't any of the commands
+> exist?
+
+Fugitive cares about the current file, not the current working
+directory.  Edit a file from the repository.
+
+> I opened a new tab.  Why don't any of the commands exist?
+
+Fugitive cares about the current file, not the current working
+directory.  Edit a file from the repository.
+
+> I changed the current working directory.  Why do all the commands use
+> the old directory?
+
+Fugitive cares about the current file, not the current working
+directory.  Edit a file from the repository.

doc/fugitive.txt

@@ -1,6 +1,6 @@
 *fugitive.txt*  A Git wrapper so awesome, it should be illegal
 
-Author:  Tim Pope <vimNOSPAM@tpope.info>        *fugitive-author*
+Author:  Tim Pope <vimNOSPAM@tpope.org>         *fugitive-author*
 License: Same terms as Vim itself (see |license|)
 
 This plugin is only available if 'compatible' is not set.
@@ -51,10 +51,15 @@ that are part of Git repositories).
 
                                                 *fugitive-:Gstatus*
 :Gstatus                Bring up the output of git-status in the preview
-                        window.  Press D to |:Gdiff| the file on the cursor
-                        line.  Press - to stage or unstage the file on the
-                        cursor line.  Press p to do so on a per hunk basis
-                        (--patch).  Press C to invoke |:Gcommit|.
+                        window.  In addition to standard motions, you can
+                        use <C-N> and <C-P> to jump from filename to
+                        filename.  Press C to invoke |:Gcommit|.  Press D to
+                        |:Gdiff| the file on the cursor line, or ds to
+                        |:Gsdiff|.  Press - to stage or unstage the file on
+                        the cursor line.  Press p to do so on a per hunk basis
+                        (--patch).  All of D, -, and p have a different,
+                        sensible (and hopefully intuitive) behavior when
+                        invoked on a heading rather than a file name.
 
                                                 *fugitive-:Gcommit*
 :Gcommit [args]         A wrapper around git-commit.  If there is nothing
@@ -102,9 +107,6 @@ that are part of Git repositories).
 :{range}Gread [revision]
                         |:read| in a |fugitive-revision| after {range}.
 
-                                                *fugitive-:Gread!*
-:Gread! [revision]      Deprecated synonym for |:Gread|.
-
                                                 *fugitive-:Gwrite*
 :Gwrite                 Write to the current file's path and stage the results.
                         When run in a work tree file, it is effectively git
@@ -118,6 +120,13 @@ that are part of Git repositories).
                         :0:foo.txt or even :0 to write to just that stage in
                         the index.
 
+                                                *fugitive-:Gwq*
+:Gwq [path]             Like |:Gwrite| followed by |:quit| if the write
+                        succeeded.
+
+:Gwq! [path]            Like |:Gwrite|! followed by |:quit|! if the write
+                        succeeded.
+
                                                 *fugitive-:Gdiff*
 :Gdiff [revision]       Perform a |vimdiff| against the current file in the
                         given revision.  With no argument, the version in the
@@ -127,6 +136,12 @@ that are part of Git repositories).
                         to the right.  Use |do| and |dp| and write to the
                         index file to simulate "git add --patch".
 
+                                                *fugitive-:Gsdiff*
+:Gsdiff [revision]      Like |:Gdiff|, but split horizontally.
+
+                                                *fugitive-:Gvdiff*
+:Gvdiff [revision]      Identical to |:Gdiff|.  For symmetry with |:Gsdiff|.
+
                                                 *fugitive-:Gmove*
 :Gmove {destination}    Wrapper around git-mv that renames the buffer
                         afterward.  The destination is relative to the current
@@ -148,6 +163,28 @@ that are part of Git repositories).
 
 :[range]Gblame [flags]  Run git-blame on the given range.
 
+                                                *fugitive-:Gbrowse*
+:[range]Gbrowse         If the remote for the current branch is on GitHub,
+                        open the current file, blob, tree, commit, or tag
+                        (with git-web--browse) on GitHub.  Otherwise, open the
+                        current file, blob, tree, commit, or tag in
+                        git-instaweb (if you have issues, verify you can run
+                        "git instaweb" from a terminal).  If a range is given,
+                        it is appropriately appended to the URL as an anchor.
+
+:[range]Gbrowse!        Like :Gbrowse, but put the URL on the clipboard rather
+                        than opening it.
+
+:[range]Gbrowse {revision}
+                        Like :Gbrowse, but for a given |fugitive-revision|.  A
+                        useful value here is -, which ties the URL to the
+                        latest commit rather than a volatile branch.
+
+:[range]Gbrowse [...]@{remote}
+                        Force using the given remote rather than the remote
+                        for the current branch.  The remote is used to
+                        determine which GitHub repository to link to.
+
 MAPPINGS                                        *fugitive-mappings*
 
 These maps are available in Git objects.

plugin/fugitive.vim

@@ -1,6 +1,6 @@
 " fugitive.vim - A Git wrapper so awesome, it should be illegal
 " Maintainer:   Tim Pope <vimNOSPAM@tpope.org>
-" Version:      1.1
+" Version:      1.2
 " GetLatestVimScripts: 2975 1 :AutoInstall: fugitive.vim
 
 if exists('g:loaded_fugitive') || &cp
@@ -108,7 +108,7 @@ function! s:ExtractGitDir(path) abort
   let ofn = ""
   let nfn = fn
   while fn != ofn
-    if isdirectory(fn . '/.git')
+    if filereadable(fn . '/.git/HEAD')
       return s:sub(simplify(fnamemodify(fn . '/.git',':p')),'\W$','')
     elseif fn =~ '\.git$' && filereadable(fn . '/HEAD')
       return s:sub(simplify(fnamemodify(fn,':p')),'\W$','')
@@ -132,19 +132,25 @@ function! s:Detect(path)
   if exists('b:git_dir')
     silent doautocmd User Fugitive
     cnoremap <expr> <buffer> <C-R><C-G> fugitive#buffer().rev()
+    let buffer = fugitive#buffer()
     if expand('%:p') =~# '//'
-      let buffer = fugitive#buffer()
       call buffer.setvar('&path',s:sub(buffer.getvar('&path'),'^\.%(,|$)',''))
     endif
+    if b:git_dir !~# ',' && stridx(buffer.getvar('&tags'),b:git_dir.'/tags') == -1
+      if &filetype != ''
+        call buffer.setvar('&tags',buffer.getvar('&tags').','.b:git_dir.'/'.&filetype.'.tags')
+      endif
+      call buffer.setvar('&tags',buffer.getvar('&tags').','.b:git_dir.'/tags')
+    endif
   endif
 endfunction
 
 augroup fugitive
   autocmd!
   autocmd BufNewFile,BufReadPost * call s:Detect(expand('<amatch>:p'))
-  autocmd FileType           netrw call s:Detect(expand('<amatch>:p'))
+  autocmd FileType           netrw call s:Detect(expand('<afile>:p'))
   autocmd VimEnter * if expand('<amatch>')==''|call s:Detect(getcwd())|endif
-  autocmd BufWinLeave * execute getbufvar(+expand('<abuf>'), 'fugitive_restore')
+  autocmd BufWinLeave * execute getwinvar(+winnr(), 'fugitive_restore')
 augroup END
 
 " }}}1
@@ -248,8 +254,8 @@ endfunction
 
 function! s:repo_rev_parse(rev) dict abort
   let hash = self.git_chomp('rev-parse','--verify',a:rev)
-  if hash =~ '^\x\{40\}$'
-    return hash
+  if hash =~ '\<\x\{40\}$'
+    return matchstr(hash,'\<\x\{40\}$')
   endif
   call s:throw('rev-parse '.a:rev.': '.hash)
 endfunction
@@ -351,7 +357,7 @@ endfunction
 function! s:buffer_type(...) dict abort
   if self.getvar('fugitive_type') != ''
     let type = self.getvar('fugitive_type')
-  elseif fnamemodify(self.name(),':p') =~# '.\git/refs/\|\.git/\w*HEAD$'
+  elseif fnamemodify(self.spec(),':p') =~# '.\git/refs/\|\.git/\w*HEAD$'
     let type = 'head'
   elseif self.getline(1) =~ '^tree \x\{40\}$' && self.getline(2) == ''
     let type = 'tree'
@@ -359,11 +365,11 @@ function! s:buffer_type(...) dict abort
     let type = 'tree'
   elseif self.getline(1) =~ '^\d\{6\} \x\{40\}\> \d\t'
     let type = 'index'
-  elseif isdirectory(self.name())
+  elseif isdirectory(self.spec())
     let type = 'directory'
-  elseif self.name() == ''
+  elseif self.spec() == ''
     let type = 'null'
-  elseif filereadable(self.name())
+  elseif filereadable(self.spec())
     let type = 'file'
   else
     let type = ''
@@ -375,42 +381,61 @@ function! s:buffer_type(...) dict abort
   endif
 endfunction
 
+if has('win32')
+
+  function! s:buffer_spec() dict abort
+    let bufname = bufname(self['#'])
+    let retval = ''
+    for i in split(bufname,'[^:]\zs\\')
+      let retval = fnamemodify((retval==''?'':retval.'\').i,':.')
+    endfor
+    return s:shellslash(fnamemodify(retval,':p'))
+  endfunction
+
+else
+
+  function! s:buffer_spec() dict abort
+    let bufname = bufname(self['#'])
+    return s:shellslash(bufname == '' ? '' : fnamemodify(bufname,':p'))
+  endfunction
+
+endif
+
 function! s:buffer_name() dict abort
-  let bufname = bufname(self['#'])
-  return s:shellslash(bufname == '' ? '' : fnamemodify(bufname,':p'))
+  return self.spec()
 endfunction
 
 function! s:buffer_commit() dict abort
-  return matchstr(self.name(),'^fugitive://.\{-\}//\zs\w*')
+  return matchstr(self.spec(),'^fugitive://.\{-\}//\zs\w*')
 endfunction
 
 function! s:buffer_path(...) dict abort
-  let rev = matchstr(self.name(),'^fugitive://.\{-\}//\zs.*')
+  let rev = matchstr(self.spec(),'^fugitive://.\{-\}//\zs.*')
   if rev != ''
     let rev = s:sub(rev,'\w*','')
   else
-    let rev = self.name()[strlen(self.repo().tree()) : -1]
+    let rev = self.spec()[strlen(self.repo().tree()) : -1]
   endif
-  return s:sub(rev,'^/',a:0 ? a:1 : '')
+  return s:sub(s:sub(rev,'.\zs/$',''),'^/',a:0 ? a:1 : '')
 endfunction
 
 function! s:buffer_rev() dict abort
-  let rev = matchstr(self.name(),'^fugitive://.\{-\}//\zs.*')
+  let rev = matchstr(self.spec(),'^fugitive://.\{-\}//\zs.*')
   if rev =~ '^\x/'
     return ':'.rev[0].':'.rev[2:-1]
   elseif rev =~ '.'
     return s:sub(rev,'/',':')
-  elseif self.name() =~ '\.git/index$'
+  elseif self.spec() =~ '\.git/index$'
     return ':'
-  elseif self.name() =~ '\.git/refs/\|\.git/.*HEAD$'
-    return self.name()[strlen(self.repo().dir())+1 : -1]
+  elseif self.spec() =~ '\.git/refs/\|\.git/.*HEAD$'
+    return self.spec()[strlen(self.repo().dir())+1 : -1]
   else
     return self.path()
   endif
 endfunction
 
 function! s:buffer_sha1() dict abort
-  if self.name() =~ '^fugitive://' || self.name() =~ '\.git/refs/\|\.git/.*HEAD$'
+  if self.spec() =~ '^fugitive://' || self.spec() =~ '\.git/refs/\|\.git/.*HEAD$'
     return self.repo().rev_parse(self.rev())
   else
     return ''
@@ -420,6 +445,8 @@ endfunction
 function! s:buffer_expand(rev) dict abort
   if a:rev =~# '^:[0-3]$'
     let file = a:rev.self.path(':')
+  elseif a:rev =~# '^[-:]/$'
+    let file = '/'.self.path()
   elseif a:rev =~# '^-'
     let file = 'HEAD^{}'.a:rev[1:-1].self.path(':')
   elseif a:rev =~# '^@{'
@@ -430,7 +457,7 @@ function! s:buffer_expand(rev) dict abort
   else
     let file = a:rev
   endif
-  return s:sub(file,'\%$',self.path())
+  return s:sub(s:sub(file,'\%$',self.path()),'\.\@<=/$','')
 endfunction
 
 function! s:buffer_containing_commit() dict abort
@@ -443,7 +470,7 @@ function! s:buffer_containing_commit() dict abort
   endif
 endfunction
 
-call s:add_methods('buffer',['getvar','setvar','getline','repo','type','name','commit','path','rev','sha1','expand','containing_commit'])
+call s:add_methods('buffer',['getvar','setvar','getline','repo','type','spec','name','commit','path','rev','sha1','expand','containing_commit'])
 
 " }}}1
 " Git {{{1
@@ -538,24 +565,25 @@ function! fugitive#reload_status() abort
   endfor
 endfunction
 
-function! s:StageDiff() abort
+function! s:StageDiff(...) abort
+  let cmd = a:0 ? a:1 : 'Gdiff'
   let section = getline(search('^# .*:$','bnW'))
   let line = getline('.')
-  let filename = matchstr(line,'^#\t\%([[:alpha:] ]\+: *\)\=\zs.*')
+  let filename = matchstr(line,'^#\t\%([[:alpha:] ]\+: *\)\=\zs.\{-\}\ze\%( (new commits)\)\=$')
   if filename ==# '' && section == '# Changes to be committed:'
     return 'Git diff --cached'
   elseif filename ==# ''
     return 'Git diff'
-  elseif line =~# '^#\trenamed:' && filename =~ ' -> '
+  elseif line =~# '^#\t\%(renamed\|copied\):' && filename =~ ' -> '
     let [old, new] = split(filename,' -> ')
     execute 'Gedit '.s:fnameescape(':0:'.new)
-    return 'Gdiff HEAD:'.s:fnameescape(old)
+    return cmd.' HEAD:'.s:fnameescape(old)
   elseif section == '# Changes to be committed:'
     execute 'Gedit '.s:fnameescape(':0:'.filename)
-    return 'Gdiff -'
+    return cmd.' -'
   else
     execute 'Gedit '.s:fnameescape('/'.filename)
-    return 'Gdiff'
+    return cmd
   endif
 endfunction
 
@@ -564,10 +592,34 @@ function! s:StageToggle(lnum1,lnum2) abort
     let output = ''
     for lnum in range(a:lnum1,a:lnum2)
       let line = getline(lnum)
-      if getline('.') == '# Changes to be committed:'
-        return 'Gcommit'
+      let repo = s:repo()
+      if line ==# '# Changes to be committed:'
+        call repo.git_chomp_in_tree('reset','-q')
+        silent! edit!
+        1
+        if !search('^# Untracked files:$','W')
+          call search('^# Change','W')
+        endif
+        return ''
+      elseif line =~# '^# Change\%(d but not updated\|s not staged for commit\):$'
+        call repo.git_chomp_in_tree('add','-u')
+        silent! edit!
+        1
+        if !search('^# Untracked files:$','W')
+          call search('^# Change','W')
+        endif
+        return ''
+      elseif line ==# '# Untracked files:'
+        " Work around Vim parser idiosyncrasy
+        call repo.git_chomp_in_tree('add','-N','.')
+        silent! edit!
+        1
+        if !search('^# Change\%(d but not updated\|s not staged for commit\):$','W')
+          call search('^# Change','W')
+        endif
+        return ''
       endif
-      let filename = matchstr(line,'^#\t\%([[:alpha:] ]\+: *\)\=\zs.*')
+      let filename = matchstr(line,'^#\t\%([[:alpha:] ]\+: *\)\=\zs.\{-\}\ze\%( (\a\+ [[:alpha:], ]\+)\)\=$')
       if filename ==# ''
         continue
       endif
@@ -580,13 +632,13 @@ function! s:StageToggle(lnum1,lnum2) abort
         let cmd = ['mv','--'] + reverse(split(filename,' -> '))
         let filename = cmd[-1]
       elseif section =~? ' to be '
-        let cmd = ['reset','-q','--',filename]
+        let cmd = ['reset','-q','--',split(filename,' -> ')[-1]]
       elseif line =~# '^#\tdeleted:'
         let cmd = ['rm','--',filename]
       else
         let cmd = ['add','--',filename]
       endif
-      let output .= call(s:repo().git_chomp_in_tree,cmd,s:repo())."\n"
+      let output .= call(repo.git_chomp_in_tree,cmd,s:repo())."\n"
     endfor
     if exists('first_filename')
       let jump = first_filename
@@ -597,7 +649,7 @@ function! s:StageToggle(lnum1,lnum2) abort
       silent! edit!
       1
       redraw
-      call search('^#\t\%([[:alpha:] ]\+: *\)\=\V'.jump.'\$','W')
+      call search('^#\t\%([[:alpha:] ]\+: *\)\=\V'.jump.'\%( (new commits)\)\=\$','W')
     endif
     echo s:sub(s:gsub(output,'\n+','\n'),'\n$','')
   catch /^fugitive:/
@@ -612,12 +664,12 @@ function! s:StagePatch(lnum1,lnum2) abort
 
   for lnum in range(a:lnum1,a:lnum2)
     let line = getline(lnum)
-    if line == '# Changes to be committed:'
+    if line ==# '# Changes to be committed:'
       return 'Git reset --patch'
-    elseif line == '# Changed but not updated:'
+    elseif line =~# '^# Change\%(d but not updated\|s not staged for commit\):$'
       return 'Git add --patch'
     endif
-    let filename = matchstr(line,'^#\t\%([[:alpha:] ]\+: *\)\=\zs.*')
+    let filename = matchstr(line,'^#\t\%([[:alpha:] ]\+: *\)\=\zs.\{-\}\ze\%( (new commits)\)\=$')
     if filename ==# ''
       continue
     endif
@@ -645,7 +697,7 @@ function! s:StagePatch(lnum1,lnum2) abort
       silent! edit!
       1
       redraw
-      call search('^#\t\%([[:alpha:] ]\+: *\)\=\V'.first_filename.'\$','W')
+      call search('^#\t\%([[:alpha:] ]\+: *\)\=\V'.first_filename.'\%( (new commits)\)\=\$','W')
     endif
   catch /^fugitive:/
     return 'echoerr v:errmsg'
@@ -667,20 +719,20 @@ function! s:Commit(args) abort
   let errorfile = tempname()
   try
     execute cd.'`=s:repo().tree()`'
-    let command = ''
     if &shell =~# 'cmd'
+      let command = ''
       let old_editor = $GIT_EDITOR
       let $GIT_EDITOR = 'false'
-    elseif &shell !~# 'csh'
-      let command = 'GIT_EDITOR=false '
+    else
+      let command = 'env GIT_EDITOR=false '
     endif
     let command .= s:repo().git_command('commit').' '.a:args
     if &shell =~# 'csh'
-      silent execute '!setenv GIT_EDITOR false; ('.command.' > '.outfile.') >& '.errorfile
+      call system('('.command.' > '.outfile.') >& '.errorfile)
     elseif a:args =~# '\%(^\| \)--interactive\>'
-      execute '!'.command.' 2> '.errorfile
+      call system(command.' 2> '.errorfile)
     else
-      silent execute '!'.command.' > '.outfile.' 2> '.errorfile
+      call system(command.' > '.outfile.' 2> '.errorfile)
     endif
     if !v:shell_error
       if filereadable(outfile)
@@ -690,8 +742,9 @@ function! s:Commit(args) abort
       endif
       return ''
     else
-      let error = get(readfile(errorfile,'',1),0,'!')
-      if error =~# "'false'\\.$"
+      let errors = readfile(errorfile)
+      let error = get(errors,-2,get(errors,-1,'!'))
+      if error =~# '\<false''\=\.$'
         let args = a:args
         let args = s:gsub(args,'%(%(^| )-- )@<!%(^| )@<=%(-[se]|--edit|--interactive)%($| )','')
         let args = s:gsub(args,'%(%(^| )-- )@<!%(^| )@<=%(-F|--file|-m|--message)%(\s+|\=)%(''[^'']*''|"%(\\.|[^"])*"|\\.|\S)*','')
@@ -700,13 +753,14 @@ function! s:Commit(args) abort
         if args !~# '\%(^\| \)--cleanup\>'
           let args = '--cleanup=strip '.args
         endif
+        let old_nr = bufnr('')
         if bufname('%') == '' && line('$') == 1 && getline(1) == '' && !&mod
           edit `=msgfile`
         else
-          split `=msgfile`
+          keepalt split `=msgfile`
         endif
         if old_type ==# 'index'
-          bdelete #
+          execute 'bdelete '.old_nr
         endif
         let b:fugitive_commit_arguments = args
         setlocal bufhidden=delete filetype=gitcommit
@@ -741,7 +795,6 @@ endfunction
 
 function! s:FinishCommit()
   let args = getbufvar(+expand('<abuf>'),'fugitive_commit_arguments')
-  let g:args = args
   if !empty(args)
     call setbufvar(+expand('<abuf>'),'fugitive_commit_arguments','')
     return s:Commit(args)
@@ -849,11 +902,8 @@ function! s:Edit(cmd,...) abort
   catch /^fugitive:/
     return 'echoerr v:errmsg'
   endtry
-  if a:cmd =~# 'read!$' || a:cmd ==# 'read'
-    if a:cmd =~# '!$'
-      call s:warn(':Gread! is deprecated. Use :Gread')
-    endif
-    return 'silent %delete|read '.s:fnameescape(file).'|silent 1delete_|diffupdate|'.line('.')
+  if a:cmd ==# 'read'
+    return 'silent %delete_|read '.s:fnameescape(file).'|silent 1delete_|diffupdate|'.line('.')
   else
     if &previewwindow && getbufvar('','fugitive_type') ==# 'index'
       wincmd p
@@ -875,9 +925,11 @@ call s:command("-bar -bang -nargs=? -complete=customlist,s:EditComplete Gtabedit
 call s:command("-bar -bang -nargs=? -count -complete=customlist,s:EditComplete Gread :execute s:Edit((!<count> && <line1> ? '' : <count>).'read<bang>',<f-args>)")
 
 " }}}1
-" Gwrite {{{1
+" Gwrite, Gwq {{{1
 
 call s:command("-bar -bang -nargs=? -complete=customlist,s:EditComplete Gwrite :execute s:Write(<bang>0,<f-args>)")
+call s:command("-bar -bang -nargs=? -complete=customlist,s:EditComplete Gw :execute s:Write(<bang>0,<f-args>)")
+call s:command("-bar -bang -nargs=? -complete=customlist,s:EditComplete Gwq :execute s:Wq(<bang>0,<f-args>)")
 
 function! s:Write(force,...) abort
   if exists('b:fugitive_commit_arguments')
@@ -941,7 +993,11 @@ function! s:Write(force,...) abort
     execute 'write! '.s:fnameescape(s:repo().translate(path))
   endif
 
-  let error = s:repo().git_chomp_in_tree('add', file)
+  if a:force
+    let error = s:repo().git_chomp_in_tree('add', '--force', file)
+  else
+    let error = s:repo().git_chomp_in_tree('add', file)
+  endif
   if v:shell_error
     let v:errmsg = 'fugitive: '.error
     return 'echoerr v:errmsg'
@@ -993,16 +1049,57 @@ function! s:Write(force,...) abort
   return 'checktime'
 endfunction
 
+function! s:Wq(force,...) abort
+  let bang = a:force ? '!' : ''
+  if exists('b:fugitive_commit_arguments')
+    return 'wq'.bang
+  endif
+  let result = call(s:function('s:Write'),[a:force]+a:000)
+  if result =~# '^\%(write\|wq\|echoerr\)'
+    return s:sub(result,'^write','wq')
+  else
+    return result.'|quit'.bang
+  endif
+endfunction
+
 " }}}1
 " Gdiff {{{1
 
-call s:command("-bar -nargs=? -complete=customlist,s:EditComplete Gdiff :execute s:Diff(<f-args>)")
+call s:command("-bang -bar -nargs=? -complete=customlist,s:EditComplete Gdiff :execute s:Diff(<bang>0,<f-args>)")
+call s:command("-bar -nargs=? -complete=customlist,s:EditComplete Gvdiff :execute s:Diff(0,<f-args>)")
+call s:command("-bar -nargs=? -complete=customlist,s:EditComplete Gsdiff :execute s:Diff(1,<f-args>)")
 
 augroup fugitive_diff
-  autocmd BufWinLeave * if winnr('$') == 2 && &diff && getbufvar(+expand('<abuf>'), 'git_dir') !=# '' | diffoff! | endif
-  autocmd BufWinEnter * if winnr('$') == 1 && &diff && getbufvar(+expand('<abuf>'), 'git_dir') !=# '' | diffoff | endif
+  autocmd!
+  autocmd BufWinLeave * if s:diff_window_count() == 2 && &diff && getbufvar(+expand('<abuf>'), 'git_dir') !=# '' | call s:diff_off_all(getbufvar(+expand('<abuf>'), 'git_dir')) | endif
+  autocmd BufWinEnter * if s:diff_window_count() == 1 && &diff && getbufvar(+expand('<abuf>'), 'git_dir') !=# '' | diffoff | endif
 augroup END
 
+function! s:diff_window_count()
+  let c = 0
+  for nr in range(1,winnr('$'))
+    let c += getwinvar(nr,'&diff')
+  endfor
+  return c
+endfunction
+
+function! s:diff_off_all(dir)
+  for nr in range(1,winnr('$'))
+    if getwinvar(nr,'&diff')
+      if nr != winnr()
+        execute nr.'wincmd w'
+        let restorewinnr = 1
+      endif
+      if exists('b:git_dir') && b:git_dir ==# a:dir
+        diffoff
+      endif
+      if exists('restorewinnr')
+        wincmd p
+      endif
+    endif
+  endfor
+endfunction
+
 function! s:buffer_compare_age(commit) dict abort
   let scores = {':0': 1, ':1': 2, ':2': 3, ':': 4, ':3': 5}
   let my_score    = get(scores,':'.self.commit(),0)
@@ -1025,18 +1122,22 @@ endfunction
 
 call s:add_methods('buffer',['compare_age'])
 
-function! s:Diff(...) abort
+function! s:Diff(bang,...) abort
+  let split = a:bang ? 'split' : 'vsplit'
   if exists(':DiffGitCached')
     return 'DiffGitCached'
   elseif (!a:0 || a:1 == ':') && s:buffer().commit() =~# '^[0-1]\=$' && s:repo().git_chomp_in_tree('ls-files', '--unmerged', '--', s:buffer().path()) !=# ''
-      leftabove vsplit `=fugitive#buffer().repo().translate(s:buffer().expand(':2'))`
-      diffthis
-      wincmd p
-      rightbelow vsplit `=fugitive#buffer().repo().translate(s:buffer().expand(':3'))`
-      diffthis
-      wincmd p
-      diffthis
-      return ''
+    let nr = bufnr('')
+    execute 'leftabove '.split.' `=fugitive#buffer().repo().translate(s:buffer().expand('':2''))`'
+    execute 'nnoremap <buffer> <silent> dp :diffput '.nr.'<Bar>diffupdate<CR>'
+    diffthis
+    wincmd p
+    execute 'rightbelow '.split.' `=fugitive#buffer().repo().translate(s:buffer().expand('':3''))`'
+    execute 'nnoremap <buffer> <silent> dp :diffput '.nr.'<Bar>diffupdate<CR>'
+    diffthis
+    wincmd p
+    diffthis
+    return ''
   elseif a:0
     if a:1 ==# ''
       return ''
@@ -1044,7 +1145,7 @@ function! s:Diff(...) abort
       let file = s:buffer().path('/')
     elseif a:1 ==# ':'
       let file = s:buffer().path(':0:')
-    elseif a:1 =~# '^:/'
+    elseif a:1 =~# '^:/.'
       try
         let file = s:repo().rev_parse(a:1).s:buffer().path(':')
       catch /^fugitive:/
@@ -1063,9 +1164,9 @@ function! s:Diff(...) abort
     let spec = s:repo().translate(file)
     let commit = matchstr(spec,'\C[^:/]//\zs\x\+')
     if s:buffer().compare_age(commit) < 0
-      rightbelow vsplit `=spec`
+      execute 'rightbelow '.split.' `=spec`'
     else
-      leftabove vsplit `=spec`
+      execute 'leftabove '.split.' `=spec`'
     endif
     diffthis
     wincmd p
@@ -1088,6 +1189,10 @@ function! s:Move(force,destination)
       let destination = destination[strlen(s:repo().tree('')):-1]
     endif
   endif
+  if isdirectory(s:buffer().name())
+    " Work around Vim parser idiosyncrasy
+    let discarded = s:buffer().setvar('&swapfile',0)
+  endif
   let message = call(s:repo().git_chomp_in_tree,['mv']+(a:force ? ['-f'] : [])+['--', s:buffer().path(), destination], s:repo())
   if v:shell_error
     let v:errmsg = 'fugitive: '.message
@@ -1099,7 +1204,11 @@ function! s:Move(force,destination)
   endif
   call fugitive#reload_status()
   if s:buffer().commit() == ''
-    return 'saveas! '.s:fnameescape(destination)
+    if isdirectory(destination)
+      return 'edit '.s:fnameescape(destination)
+    else
+      return 'saveas! '.s:fnameescape(destination)
+    endif
   else
     return 'file '.s:fnameescape(s:repo().translate(':0:'.destination)
   endif
@@ -1184,17 +1293,25 @@ function! s:Blame(bang,line1,line2,count,args) abort
       else
         let error = tempname()
         let temp = error.'.fugitiveblame'
-        silent! exe '%write !'.basecmd.' > '.temp.' 2> '.error
+        if &shell =~# 'csh'
+          silent! execute '%write !('.basecmd.' > '.temp.') >& '.error
+        else
+          silent! execute '%write !'.basecmd.' > '.temp.' 2> '.error
+        endif
+        if exists('l:dir')
+          execute cd.'`=dir`'
+          unlet dir
+        endif
         if v:shell_error
           call s:throw(join(readfile(error),"\n"))
         endif
         let bufnr = bufnr('')
-        let restore = 'call setbufvar('.bufnr.',"&scrollbind",0)'
+        let restore = 'call setwinvar(bufwinnr('.bufnr.'),"&scrollbind",0)'
         if &l:wrap
-          let restore .= '|call setbufvar('.bufnr.',"&wrap",1)'
+          let restore .= '|call setwinvar(bufwinnr('.bufnr.'),"&wrap",1)'
         endif
         if &l:foldenable
-          let restore .= '|call setbufvar('.bufnr.',"&foldenable",1)'
+          let restore .= '|call setwinvar(bufwinnr('.bufnr.'),"&foldenable",1)'
         endif
         let winnr = winnr()
         windo set noscrollbind
@@ -1206,7 +1323,7 @@ function! s:Blame(bang,line1,line2,count,args) abort
         let b:git_dir = git_dir
         let b:fugitive_type = 'blame'
         let b:fugitive_blamed_bufnr = bufnr
-        let b:fugitive_restore = restore
+        let w:fugitive_restore = restore
         let b:fugitive_blame_arguments = join(a:args,' ')
         call s:Detect(expand('%:p'))
         execute top
@@ -1292,6 +1409,200 @@ function! s:BlameSyntax() abort
   hi def link FugitiveblameNotCommittedYet    Comment
 endfunction
 
+" }}}1
+" Gbrowse {{{1
+
+call s:command("-bar -bang -count=0 -nargs=? -complete=customlist,s:EditComplete Gbrowse :execute s:Browse(<bang>0,<line1>,<count>,<f-args>)")
+
+function! s:Browse(bang,line1,count,...) abort
+  try
+    let rev = a:0 ? substitute(a:1,'@[[:alnum:]_-]*\%(://.\{-\}\)\=$','','') : ''
+    if rev ==# ''
+      let expanded = s:buffer().rev()
+    elseif rev ==# ':'
+      let expanded = s:buffer().path('/')
+    else
+      let expanded = s:buffer().expand(rev)
+    endif
+    let full = s:repo().translate(expanded)
+    let commit = ''
+    if full =~# '^fugitive://'
+      let commit = matchstr(full,'://.*//\zs\w\+')
+      let path = matchstr(full,'://.*//\w\+\zs/.*')
+      if commit =~ '..'
+        let type = s:repo().git_chomp('cat-file','-t',commit.s:sub(path,'^/',':'))
+      else
+        let type = 'blob'
+      endif
+      let path = path[1:-1]
+    elseif s:repo().bare()
+      let path = '.git/' . full[strlen(s:repo().dir())+1:-1]
+      let type = ''
+    else
+      let path = full[strlen(s:repo().tree())+1:-1]
+      if path =~# '^\.git/'
+        let type = ''
+      elseif isdirectory(full)
+        let type = 'tree'
+      else
+        let type = 'blob'
+      endif
+    endif
+    if path =~# '^\.git/.*HEAD' && filereadable(s:repo().dir(path[5:-1]))
+      let body = readfile(s:repo().dir(path[5:-1]))[0]
+      if body =~# '^\x\{40\}$'
+        let commit = body
+        let type = 'commit'
+        let path = ''
+      elseif body =~# '^ref: refs/'
+        let path = '.git/' . matchstr(body,'ref: \zs.*')
+      endif
+    endif
+
+    if a:0 && a:1 =~# '@[[:alnum:]_-]*\%(://.\{-\}\)\=$'
+      let remote = matchstr(a:1,'@\zs[[:alnum:]_-]\+\%(://.\{-\}\)\=$')
+    elseif path =~# '^\.git/refs/remotes/.'
+      let remote = matchstr(path,'^\.git/refs/remotes/\zs[^/]\+')
+    else
+      let remote = 'origin'
+      let branch = matchstr(rev,'^[[:alnum:]/._-]\+\ze[:^~@]')
+      if branch ==# '' && path =~# '^\.git/refs/\w\+/'
+        let branch = s:sub(path,'^\.git/refs/\w+/','')
+      endif
+      if filereadable(s:repo().dir('refs/remotes/'.branch))
+        let remote = matchstr(branch,'[^/]\+')
+        let rev = rev[strlen(remote)+1:-1]
+      else
+        if branch ==# ''
+          let branch = matchstr(s:repo().head_ref(),'\<refs/heads/\zs.*')
+        endif
+        if branch != ''
+          let remote = s:repo().git_chomp('config','branch.'.branch.'.remote')
+          if remote ==# ''
+            let remote = 'origin'
+          elseif rev[0:strlen(branch)-1] ==# branch && rev[strlen(branch)] =~# '[:^~@]'
+            let rev = s:repo().git_chomp('config','branch.'.branch.'.merge')[11:-1] . rev[strlen(branch):-1]
+          endif
+        endif
+      endif
+    endif
+
+    let raw = s:repo().git_chomp('config','remote.'.remote.'.url')
+    if raw ==# ''
+      let raw = remote
+    endif
+
+    let url = s:github_url(s:repo(),raw,rev,commit,path,type,a:line1,a:count)
+    if url == ''
+      let url = s:instaweb_url(s:repo(),rev,commit,path,type,a:count ? a:line1 : 0)
+    endif
+
+    if url == ''
+      call s:throw("Instaweb failed to start and '".remote."' is not a GitHub remote")
+    endif
+
+    if a:bang
+      let @* = url
+      return 'echomsg '.string(url)
+    else
+      return 'echomsg '.string(url).'|silent Git web--browse '.shellescape(url,1)
+    endif
+  catch /^fugitive:/
+    return 'echoerr v:errmsg'
+  endtry
+endfunction
+
+function! s:github_url(repo,url,rev,commit,path,type,line1,line2) abort
+  let path = a:path
+  let repo_path = matchstr(a:url,'^\%(https\=://\|git://\|git@\)github\.com[/:]\zs.\{-\}\ze\%(\.git\)\=$')
+  if repo_path ==# ''
+    return ''
+  endif
+  let root = 'https://github.com/' . repo_path
+  if path =~# '^\.git/refs/heads/'
+    let branch = a:repo.git_chomp('config','branch.'.path[16:-1].'.merge')[11:-1]
+    if branch ==# ''
+      return root . '/commits/' . path[16:-1]
+    else
+      return root . '/commits/' . branch
+    endif
+  elseif path =~# '^\.git/refs/.'
+    return root . '/commits/' . matchstr(path,'[^/]\+$')
+  elseif path =~# '.git/\%(config$\|hooks\>\)'
+    return root . '/admin'
+  elseif path =~# '^\.git\>'
+    return root
+  endif
+  if a:rev =~# '^[[:alnum:]._-]\+:'
+    let commit = matchstr(a:rev,'^[^:]*')
+  elseif a:commit =~# '^\d\=$'
+    let local = matchstr(a:repo.head_ref(),'\<refs/heads/\zs.*')
+    let commit = a:repo.git_chomp('config','branch.'.local.'.merge')[11:-1]
+    if commit ==# ''
+      let commit = local
+    endif
+  else
+    let commit = a:commit
+  endif
+  if a:type == 'tree'
+    let url = s:sub(root . '/tree/' . commit . '/' . path,'/$','')
+  elseif a:type == 'blob'
+    let url = root . '/blob/' . commit . '/' . path
+    if a:line2 && a:line1 == a:line2
+      let url .= '#L' . a:line1
+    elseif a:line2
+      let url .= '#L' . a:line1 . '-' . a:line2
+    endif
+  elseif a:type == 'tag'
+    let commit = matchstr(getline(3),'^tag \zs.*')
+    let url = root . '/tree/' . commit
+  else
+    let url = root . '/commit/' . commit
+  endif
+  return url
+endfunction
+
+function! s:instaweb_url(repo,rev,commit,path,type,...) abort
+  let output = a:repo.git_chomp('instaweb','-b','unknown')
+  if output =~# 'http://'
+    let root = matchstr(output,'http://.*').'/?p='.fnamemodify(a:repo.dir(),':t')
+  else
+    return ''
+  endif
+  if a:path =~# '^\.git/refs/.'
+    return root . ';a=shortlog;h=' . matchstr(a:path,'^\.git/\zs.*')
+  elseif a:path =~# '^\.git\>'
+    return root
+  endif
+  let url = root
+  if a:commit =~# '^\x\{40\}$'
+    if a:type ==# 'commit'
+      let url .= ';a=commit'
+    endif
+    let url .= ';h=' . a:repo.rev_parse(a:commit . (a:path == '' ? '' : ':' . a:path))
+  else
+    if a:type ==# 'blob'
+      let tmp = tempname()
+      silent execute 'write !'.a:repo.git_command('hash-object','-w','--stdin').' > '.tmp
+      let url .= ';h=' . readfile(tmp)[0]
+    else
+      try
+        let url .= ';h=' . a:repo.rev_parse((a:commit == '' ? 'HEAD' : ':' . a:commit) . ':' . a:path)
+      catch /^fugitive:/
+        call s:throw('fugitive: cannot browse uncommitted file')
+      endtry
+    endif
+    let root .= ';hb=' . matchstr(a:repo.head_ref(),'[^ ]\+$')
+  endif
+  if a:path !=# ''
+    let url .= ';f=' . a:path
+  endif
+  if a:0 && a:1
+    let url .= '#l' . a:1
+  endif
+  return url
+endfunction
+
 " }}}1
 " File access {{{1
 
@@ -1305,14 +1616,12 @@ function! s:ReplaceCmd(cmd,...) abort
       if &shell =~# 'cmd'
         let old_index = $GIT_INDEX_FILE
         let $GIT_INDEX_FILE = a:1
-      elseif &shell =~# 'csh'
-        let prefix = 'setenv GIT_INDEX_FILE '.s:shellesc(a:1).'; '
       else
-        let prefix = 'GIT_INDEX_FILE='.s:shellesc(a:1).' '
+        let prefix = 'env GIT_INDEX_FILE='.s:shellesc(a:1).' '
       endif
     endif
     set noautowrite
-    silent exe '!'.escape(prefix.a:cmd,'%#').' > '.tmp
+    call system(prefix.a:cmd.' > '.tmp)
   finally
     let &autowrite = aw
     if exists('old_index')
@@ -1338,7 +1647,7 @@ function! s:BufReadIndex()
     if fnamemodify($GIT_INDEX_FILE !=# '' ? $GIT_INDEX_FILE : b:git_dir . '/index', ':p') ==# expand('%:p')
       let index = ''
     else
-      let index = expand('%')
+      let index = expand('%:p')
     endif
     if b:fugitive_display_format
       call s:ReplaceCmd(s:repo().git_command('ls-files','--stage'),index)
@@ -1358,10 +1667,16 @@ function! s:BufReadIndex()
     nnoremap <buffer> <silent> a :<C-U>let b:fugitive_display_format += 1<Bar>exe <SID>BufReadIndex()<CR>
     nnoremap <buffer> <silent> i :<C-U>let b:fugitive_display_format -= 1<Bar>exe <SID>BufReadIndex()<CR>
     nnoremap <buffer> <silent> D :<C-U>execute <SID>StageDiff()<CR>
+    nnoremap <buffer> <silent> dd :<C-U>execute <SID>StageDiff()<CR>
+    nnoremap <buffer> <silent> dh :<C-U>execute <SID>StageDiff('Gsdiff')<CR>
+    nnoremap <buffer> <silent> ds :<C-U>execute <SID>StageDiff('Gsdiff')<CR>
+    nnoremap <buffer> <silent> dv :<C-U>execute <SID>StageDiff()<CR>
     nnoremap <buffer> <silent> - :<C-U>execute <SID>StageToggle(line('.'),line('.')+v:count1-1)<CR>
     xnoremap <buffer> <silent> - :<C-U>execute <SID>StageToggle(line("'<"),line("'>"))<CR>
     nnoremap <buffer> <silent> p :<C-U>execute <SID>StagePatch(line('.'),line('.')+v:count1-1)<CR>
     xnoremap <buffer> <silent> p :<C-U>execute <SID>StagePatch(line("'<"),line("'>"))<CR>
+    nnoremap <buffer> <silent> <C-N> :call search('^#\t.*','W')<Bar>.<CR>
+    nnoremap <buffer> <silent> <C-P> :call search('^#\t.*','Wbe')<Bar>.<CR>
     call s:JumpInit()
     nunmap   <buffer>          P
     nunmap   <buffer>          ~
@@ -1415,7 +1730,11 @@ function! s:BufWriteIndexFile()
     endif
     let info = old_mode.' '.sha1.' '.stage."\t".path
     call writefile([info],tmp)
-    let error = system(s:repo().git_command('update-index','--index-info').' < '.tmp)
+    if has('win32')
+      let error = system('type '.tmp.'|'.s:repo().git_command('update-index','--index-info'))
+    else
+      let error = system(s:repo().git_command('update-index','--index-info').' < '.tmp)
+    endif
     if v:shell_error == 0
       setlocal nomodified
       silent execute 'doautocmd BufWritePost '.s:fnameescape(expand('%:p'))
@@ -1539,9 +1858,9 @@ function! s:GF(mode) abort
       if showtree && line('.') == 1
         return ""
       elseif showtree && line('.') > 2
-        return s:Edit(a:mode,buffer.commit().':'.(buffer.path() == '' ? '' : buffer.path().'/').s:sub(getline('.'),'/$',''))
+        return s:Edit(a:mode,buffer.commit().':'.s:buffer().path().(buffer.path() =~# '^$\|/$' ? '' : '/').s:sub(getline('.'),'/$',''))
       elseif getline('.') =~# '^\d\{6\} \l\{3,8\} \x\{40\}\t'
-        return s:Edit(a:mode,buffer.commit().':'.(buffer.path() == '' ? '' : buffer.path().'/').s:sub(matchstr(getline('.'),'\t\zs.*'),'/$',''))
+        return s:Edit(a:mode,buffer.commit().':'.s:buffer().path().(buffer.path() =~# '^$\|/$' ? '' : '/').s:sub(matchstr(getline('.'),'\t\zs.*'),'/$',''))
       endif
 
     elseif buffer.type('blob')
@@ -1566,7 +1885,7 @@ function! s:GF(mode) abort
         let file = '/'.matchstr(getline('.'),' -> \zs.*')
         return s:Edit(a:mode,file)
       elseif getline('.') =~# '^#\t[[:alpha:] ]\+: *.'
-        let file = '/'.matchstr(getline('.'),': *\zs.*')
+        let file = '/'.matchstr(getline('.'),': *\zs.\{-\}\ze\%( (new commits)\)\=$')
         return s:Edit(a:mode,file)
       elseif getline('.') =~# '^#\t.'
         let file = '/'.matchstr(getline('.'),'#\t\zs.*')
@@ -1629,6 +1948,13 @@ function! s:GF(mode) abort
       elseif getline('.') =~# '^diff --git \%(a/.*\|/dev/null\) \%(b/.*\|/dev/null\)'
         let dref = matchstr(getline('.'),'\Cdiff --git \zs\%(a/.*\|/dev/null\)\ze \%(b/.*\|/dev/null\)')
         let ref = matchstr(getline('.'),'\Cdiff --git \%(a/.*\|/dev/null\) \zs\%(b/.*\|/dev/null\)')
+        let dcmd = 'Gdiff'
+
+      elseif getline('.') =~# '^index ' && getline(line('.')-1) =~# '^diff --git \%(a/.*\|/dev/null\) \%(b/.*\|/dev/null\)'
+        let line = getline(line('.')-1)
+        let dref = matchstr(line,'\Cdiff --git \zs\%(a/.*\|/dev/null\)\ze \%(b/.*\|/dev/null\)')
+        let ref = matchstr(line,'\Cdiff --git \%(a/.*\|/dev/null\) \zs\%(b/.*\|/dev/null\)')
+        let dcmd = 'Gdiff!'
 
       elseif line('$') == 1 && getline('.') =~ '^\x\{40\}$'
         let ref = getline('.')
@@ -1656,7 +1982,7 @@ function! s:GF(mode) abort
       endif
 
       if exists('dref')
-        return s:Edit(a:mode,ref) . '|Gdiff '.s:fnameescape(dref)
+        return s:Edit(a:mode,ref) . '|'.dcmd.' '.s:fnameescape(dref)
       elseif ref != ""
         return s:Edit(a:mode,ref)
       endif
@@ -1698,6 +2024,18 @@ function! fugitive#statusline(...)
   endif
 endfunction
 
+function! s:repo_config(conf) dict abort
+  return matchstr(system(s:repo().git_command('config').' '.a:conf),"[^\r\n]*")
+endfun
+
+function! s:repo_user() dict abort
+  let username = s:repo().config('user.name')
+  let useremail = s:repo().config('user.email')
+  return username.' <'.useremail.'>'
+endfun
+
+call s:add_methods('repo',['config', 'user'])
+
 " }}}1
 
 " vim:set ft=vim ts=8 sw=2 sts=2: