Run status buffer Git commands in parallel

GIT_INDEX_FILE is typically set to index.lock when Vim is invoked by
`git commit`.  This effectively breaks Fugitive if you try to use it in
a different repository while inside that Vim session.  To remedy this,
we can instead point GIT_INDEX_FILE at the index file for the relevant
repository.

This also retools command preparation to allow for general purpose
environment variable overrides.

.github/FUNDING.yml

@@ -0,0 +1,2 @@
+github: tpope
+custom: ["https://www.paypal.me/vimpope"]

README.markdown

@@ -1,55 +1,80 @@
 # fugitive.vim
 
-I'm not going to lie to you; fugitive.vim may very well be the best
-Git wrapper of all time.  Check out these features:
+Fugitive is the premier Vim plugin for Git.  Or maybe it's the premier Git
+plugin for Vim?  Either way, it's "so awesome, it should be illegal".  That's
+why it's called Fugitive.
 
-View any blob, tree, commit, or tag in the repository with `:Gedit` (and
-`:Gsplit`, `:Gvsplit`, `:Gtabedit`, ...).  Edit a file in the index and
-write to it to stage the changes.  Use `:Gdiff` to bring up the staged
-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.
+The crown jewel of Fugitive is `:Git` (or just `:G`), which calls any
+arbitrary Git command.  If you know how to use Git at the command line, you
+know how to use `:Git`.  It's vaguely akin to `:!git` but with numerous
+improvements:
 
-Bring up the output of `git status` with `:Gstatus`.  Press `-` to
-`add`/`reset` a file's changes, or `p` to `add`/`reset` `--patch`.  And guess
-what `:Gcommit` does!
+* The default behavior is to directly echo the command's output.  Quiet
+  commands like `:Git add` avoid the dreaded "Press ENTER or type command to
+  continue" prompt.
+* `:Git commit`, `:Git rebase -i`, and other commands that invoke an editor do
+  their editing in the current Vim instance.
+* `:Git diff`, `:Git log`, and other verbose, paginated commands have their
+  output loaded into a temporary buffer.  Force this behavior for any command
+  with `:Git --paginate` or `:Git -p`.
+* `:Git blame` uses a temporary buffer with maps for additional triage.  Press
+  enter on a line to view the commit where the line changed, or `g?` to see
+  other available maps.  Omit the filename argument and the currently edited
+  file will be blamed in a vertical, scroll-bound split.
+* `:Git mergetool` and `:Git difftool` load their changesets into the quickfix
+  list.
+* Called with no arguments, `:Git` opens a summary window with dirty files and
+  unpushed and unpulled commits.  Press `g?` to bring up a list of maps for
+  numerous operations including diffing, staging, committing, rebasing, and
+  stashing.  (This is the successor to the old `:Gstatus`.)
+* This command (along with all other commands) always uses the current
+  buffer's repository, so you don't need to worry about the current working
+  directory.
 
-`:Gblame` brings up an interactive vertical split with `git blame`
-output.  Press enter on a line to edit the commit where the line
-changed, or `o` to open it in a split.  When you're done, use `:Gedit`
-in the historic buffer to go back to the work tree version.
+Additional commands are provided for higher level operations:
 
-`:Gmove` does a `git mv` on a file and simultaneously renames the
-buffer.  `:Gdelete` does a `git rm` on a file and simultaneously deletes
-the buffer.
-
-Use `:Ggrep` to search the work tree (or any arbitrary commit) with
-`git grep`, skipping over that which is not tracked in the repository.
-`:Glog` loads all previous revisions of a file into the quickfix list so
-you can iterate over them and watch the file evolve!
-
-`:Gread` is a variant of `git checkout -- filename` that operates on the
-buffer rather than the filename.  This means you can use `u` to undo it
-and you never get any warnings about the file changing outside Vim.
-`:Gwrite` writes to both the work tree and index versions of a file,
-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 the web front-end of your favorite
-hosting provider, with optional line range (try it in visual mode!).  Built-in
-support is provided for `git instaweb`, and plugins are available for popular
-providers such as [GitHub][rhubarb.vim], [GitLab][fugitive-gitlab.vim], and
-[Bitbucket][fubitive.vim].
+* View any blob, tree, commit, or tag in the repository with `:Gedit` (and
+  `:Gsplit`, etc.).  For example, `:Gedit HEAD~3:%` loads the current file as
+  it existed 3 commits ago.
+* `:Gdiffsplit` (or `:Gvdiffsplit`) brings up the staged version of the file
+  side by side with the working tree version.  Use Vim's diff handling
+  capabilities to apply changes to the staged version, and write that buffer
+  to stage the changes.  You can also give an arbitrary `:Gedit` argument to
+  diff against older versions of the file.
+* `:Gread` is a variant of `git checkout -- filename` that operates on the
+  buffer rather than the file itself.  This means you can use `u` to undo it
+  and you never get any warnings about the file changing outside Vim.
+* `:Gwrite` writes to both the work tree and index versions of a file, 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.
+* `:Ggrep` is `:grep` for `git grep`.  `:Glgrep` is `:lgrep` for the same.
+* `:GMove` does a `git mv` on the current file and changes the buffer name to
+  match.  `:GRename` does the same with a destination filename relative to the
+  current file's directory.
+* `:GDelete` does a `git rm` on the current file and simultaneously deletes
+  the buffer.  `:GRemove` does the same but leaves the (now empty) buffer
+  open.
+* `:GBrowse` to open the current file on the web front-end of your favorite
+  hosting provider, with optional line range (try it in visual mode).  Plugins
+  are available for popular providers such as [GitHub][rhubarb.vim],
+  [GitLab][fugitive-gitlab.vim], [Bitbucket][fubitive.vim],
+  [Gitee][fugitive-gitee.vim], [Pagure][pagure],
+  [Phabricator][vim-phabricator], [Azure DevOps][fugitive-azure-devops.vim],
+  and [sourcehut][srht.vim].
 
 [rhubarb.vim]: https://github.com/tpope/vim-rhubarb
 [fugitive-gitlab.vim]: https://github.com/shumphrey/fugitive-gitlab.vim
 [fubitive.vim]: https://github.com/tommcdo/vim-fubitive
+[fugitive-gitee.vim]: https://github.com/linuxsuren/fugitive-gitee.vim
+[pagure]: https://github.com/FrostyX/vim-fugitive-pagure
+[vim-phabricator]: https://github.com/jparise/vim-phabricator
+[fugitive-azure-devops.vim]: https://github.com/cedarbaum/fugitive-azure-devops.vim
+[srht.vim]: https://git.sr.ht/~willdurand/srht.vim
 
 Add `%{FugitiveStatusline()}` to `'statusline'` to get an indicator
-with the current branch in (surprise!) your statusline.
+with the current branch in your statusline.
 
-Last but not least, there's `:Git` for running any arbitrary command,
-and `Git!` to open the output of a command in a temp file.
+For more information, see `:help fugitive`.
 
 ## Screencasts
 
@@ -61,40 +86,34 @@ and `Git!` to open the output of a command in a temp file.
 
 ## Installation
 
-If you don't have a preferred installation method, one option is to install
-[pathogen.vim](https://github.com/tpope/vim-pathogen), and then copy
-and paste:
+Install using your favorite package manager, or use Vim's built-in package support:
 
-    cd ~/.vim/bundle
-    git clone https://github.com/tpope/vim-fugitive.git
-    vim -u NONE -c "helptags vim-fugitive/doc" -c q
-
-If your Vim version is below 7.2, I recommend also installing
-[vim-git](https://github.com/tpope/vim-git) for syntax highlighting and
-other Git niceties.
+    mkdir -p ~/.vim/pack/tpope/start
+    cd ~/.vim/pack/tpope/start
+    git clone https://tpope.io/vim/fugitive.git
+    vim -u NONE -c "helptags fugitive/doc" -c q
 
 ## FAQ
 
-> Why don't any of the commands exist?
+> What happened to the dispatch.vim backed asynchronous `:Gpush` and
+> `:Gfetch`?
 
-Fugitive cares about the current file, not the current working directory.
-Edit a file from the repository.  To avoid the blank window problem, favor
-commands like `:split` and `:tabedit` over commands like `:new` and `:tabnew`.
+This behavior was divisive, confusing, and complicated inputting passwords, so
+it was removed.  Use `:Dispatch git push` for effectively the same behavior,
+or provide your own asynchronous `:Gpush` and `:Gfetch` by adding the
+following to your vimrc:
 
-> Here's a patch that automatically opens the quickfix window after
-> `:Ggrep`.
+    command! -bang -bar -nargs=* Gpush execute 'Dispatch<bang> -dir=' .
+          \ fnameescape(FugitiveGitDir()) 'git push' <q-args>
+    command! -bang -bar -nargs=* Gfetch execute 'Dispatch<bang> -dir=' .
+          \ fnameescape(FugitiveGitDir()) 'git fetch' <q-args>
 
-This is a great example of why I recommend asking before patching.
-There are valid arguments to be made both for and against automatically
-opening the quickfix window.  Whenever I have to make an arbitrary
-decision like this, I ask what Vim would do.  And Vim does not open a
-quickfix window after `:grep`.
+> So I have a symlink and...
 
-Luckily, it's easy to implement the desired behavior without changing
-fugitive.vim.  The following autocommand will cause the quickfix window
-to open after any grep invocation:
-
-    autocmd QuickFixCmdPost *grep* cwindow
+Stop.  Just stop.  If Git won't deal with your symlink, then Fugitive won't
+either.  Consider using a [plugin that resolves
+symlinks](https://github.com/aymericbeaumet/symlink.vim), or even better,
+using fewer symlinks.
 
 ## Self-Promotion
 

doc/fugitive.txt

@@ -15,150 +15,138 @@ COMMANDS                                        *fugitive-commands*
 These commands are local to the buffers in which they work (generally, buffers
 that are part of Git repositories).
 
-                                                *fugitive-:Git*
-:Git [args]             Run an arbitrary git command. Similar to :!git [args]
-                        but chdir to the repository tree first.
+                                                *:Git* *fugitive-:G*
+:Git {args}             Run an arbitrary git command and display any output.
+:G {args}               On UNIX this uses a pty and on other platforms it uses
+                        a pipe, which will cause some behavior differences
+                        such as the absence of progress bars.  Any file the
+                        command edits (for example, a commit message) will be
+                        loaded into a split window.  Closing that window will
+                        resume running the command.  A few Git subcommands
+                        have different behavior; these are documented below.
 
-                                                *fugitive-:Git!*
-:Git! [args]            Like |:Git|, but capture the output into a temp file,
-                        and edit that temp file.
+                                                *:Git_--paginate* *:Git_-p*
+:Git --paginate {args}  Run an arbitrary git command, capture output to a temp
+:Git -p {args}          file, and |:split| that temp file.  Use :0Git to
+:G --paginate {args}    |:edit| the temp file instead.  A temp file is always
+:G -p {args}            used for commands like diff and log that typically
+                        user a pager, and for any command that has the
+                        pager.<cmd> Git configuration option set.
 
-                                                *fugitive-:Gcd*
-:Gcd [directory]        |:cd| relative to the repository.
+                                                *fugitive-summary*
+:Git                    With no arguments, bring up a summary window vaguely
+:G                      akin to git-status.  Press g? or see |fugitive-maps|
+                        for usage.
 
-                                                *fugitive-:Glcd*
-:Glcd [directory]       |:lcd| relative to the repository.
-
-                                                *fugitive-:Gstatus*
-:Gstatus                Bring up the output of git-status in the preview
-                        window.  The following maps, which work on the cursor
-                        line file where sensible, are provided:
+                                                *:Git_blame*
+:Git blame [flags]      Run git-blame [flags] on the current file and open the
+                        results in a scroll-bound vertical split.  The
+                        following maps, which work on the cursor line commit
+                        where sensible, are provided:
 
                         g?    show this help
-                        <C-N> next file
-                        <C-P> previous file
-                        <CR>  |:Gedit|
-                        -     |:Git| add
-                        -     |:Git| reset (staged files)
-                        a     Show alternative format
-                        ca    |:Gcommit| --amend
-                        cc    |:Gcommit|
-                        ce    |:Gcommit| --amend --no-edit
-                        cw    |:Gcommit| --amend --only
-                        cva   |:Gcommit| --verbose --amend
-                        cvc   |:Gcommit| --verbose
-                        D     |:Gdiff|
-                        ds    |:Gsdiff|
-                        dp    |:Git!| diff (p for patch; use :Gw to apply)
-                        dp    |:Git| add --intent-to-add (untracked files)
-                        dv    |:Gvdiff|
-                        O     |:Gtabedit|
-                        o     |:Gsplit|
-                        P     |:Git| add --patch
-                        P     |:Git| reset --patch (staged files)
-                        q     close status
-                        r     reload status
-                        S     |:Gvsplit|
-                        U     |:Git| checkout
-                        U     |:Git| checkout HEAD (staged files)
-                        U     |:Git| clean (untracked files)
-                        U     |:Git| rm (unmerged files)
+                        A     resize to end of author column
+                        C     resize to end of commit column
+                        D     resize to end of date/time column
+                        gq    close blame, then |:Gedit| to return to work
+                              tree version
+                        <CR>  close blame, and jump to patch that added line
+                              (or directly to blob for boundary commit)
+                        o     jump to patch or blob in horizontal split
+                        O     jump to patch or blob in new tab
+                        p     jump to patch or blob in preview window
+                        -     reblame at commit
+                        ~     reblame at [count]th first grandparent
+                        P     reblame at [count]th parent (like HEAD^[count])
 
-                                                *fugitive-:Gcommit*
-:Gcommit [args]         A wrapper around git-commit.  If there is nothing
-                        to commit, |:Gstatus| is called instead.  Unless the
-                        arguments given would skip the invocation of an editor
-                        (e.g., -m), a split window will be used to obtain a
-                        commit message, or a new tab if -v is given.  Write
-                        and close that window (:wq or |:Gwrite|) to finish the
-                        commit.  Unlike when running the actual git-commit
-                        command, it is possible (but unadvisable) to alter the
-                        index with commands like git-add and git-reset while a
-                        commit message is pending.
+                                                *g:fugitive_dynamic_colors*
+                        In the GUI or a 256 color terminal, commit hashes will
+                        highlighted in different colors. To disable this:
+>
+                        let g:fugitive_dynamic_colors = 0
+<
+:[range]Git blame [...] If a range is given, just that part of the file will
+:Git blame [...] {file} be blamed, and a horizontal split without
+                        scrollbinding is used.  You can also give an arbitrary
+                        filename.
 
-                                                *fugitive-:Gmerge*
-:Gmerge [args]          Calls git-merge and loads errors and conflicted files
-                        into the |quickfix| list.  Opens a |:Gcommit| style
-                        split window for the commit message if the merge
-                        succeeds.  If called during a merge conflict, the
-                        conflicted files from the current index are loaded
-                        into the |quickfix| list.
+                                                *:Git_difftool*
+:Git[!] difftool [args] Invoke `git diff [args]` and load the changes into the
+                        quickfix list.  Each changed hunk gets a separate
+                        quickfix entry unless you pass an option like
+                        --name-only or --name-status.  Jumps to the first
+                        change unless [!] is given.
 
-                                                *fugitive-:Gpull*
-:Gpull [args]           Like |:Gmerge|, but for git-pull.
+:Git difftool -y [args] Invoke `git diff [args]`, open each changed file in a
+                        new tab, and invoke |:Gdiffsplit!| against the
+                        appropriate commit.
 
-                                                *fugitive-:Grebase*
-:Grebase [args]         Like |:Gmerge|, but for git-rebase.  Interactive
-                        rebase not suppported.
+                                                *:Git_mergetool*
+:Git mergetool [args]   Like |:Git_difftool|, but target merge conflicts.
 
-                                                *fugitive-:Gpush*
-:Gpush [args]           Invoke git-push, load the results into the |quickfix|
-                        list, and invoke |:cwindow| to reveal any errors.
-                        |:Dispatch| is used if available for asynchronous
-                        invocation.
-
-                                                *fugitive-:Gfetch*
-:Gfetch [args]          Like |:Gpush|, but for git-fetch.
-
-                                                *fugitive-:Ggrep*
+                                                *:Ggrep* *:Gcgrep* *:Git_grep*
 :Ggrep[!] [args]        |:grep|[!] with git-grep as 'grepprg'.
+:Git[!] grep [args]
 
-                                                *fugitive-:Glgrep*
+                                                *:Glgrep*
 :Glgrep[!] [args]       |:lgrep|[!] with git-grep as 'grepprg'.
+:0Git[!] grep [args]
 
-                                                *fugitive-:Glog*
-:Glog [args]            Load all previous revisions of the current file into
-                        the |quickfix| list.  Additional git-log arguments can
-                        be given (for example, --reverse).  If "--" appears as
-                        an argument, no file specific filtering is done, and
-                        previous commits rather than previous file revisions
-                        are loaded.
+                                                 *:Gclog*
+:Gclog[!] [args]        Use git-log [args] to load the commit history into the
+                        |quickfix| list.  Jumps to the first commit unless [!]
+                        is given.
 
-:{range}Glog [args]     Use git-log -L to load previous revisions of the given
+                        The quickfix list can be awkward for many use cases
+                        and exhibits extremely poor performance with larger
+                        data sets.  Consider using |:Git| log instead.
+
+:{range}Gclog[!] [args] Use git-log -L to load previous revisions of the given
                         range of the current file into the |quickfix| list.
                         The cursor is positioned on the first line of the
-                        first diff hunk for each commit.
+                        first diff hunk for each commit.  Use :0Gclog to
+                        target the entire file.
 
-                                                *fugitive-:Gllog*
-:Gllog [args]           Like |:Glog|, but use the location list instead of the
+                                                *:Gllog*
+:Gllog [args]           Like |:Gclog|, but use the location list instead of the
                         |quickfix| list.
 
-                                        *fugitive-:Gedit* *fugitive-:Ge*
-:Gedit [revision]       |:edit| a |fugitive-revision|.
+                                                *:Gcd*
+:Gcd [directory]        |:cd| relative to the repository.
 
-                                                *fugitive-:Gsplit*
-:Gsplit [revision]      |:split| a |fugitive-revision|.
+                                                *:Glcd*
+:Glcd [directory]       |:lcd| relative to the repository.
 
-                                                *fugitive-:Gvsplit*
-:Gvsplit [revision]     |:vsplit| a |fugitive-revision|.
+                                                *:Gedit* *fugitive-:Ge*
+:Gedit [object]         |:edit| a |fugitive-object|.
 
-                                                *fugitive-:Gtabedit*
-:Gtabedit [revision]    |:tabedit| a |fugitive-revision|.
+                                                *:Gsplit*
+:Gsplit [object]        |:split| a |fugitive-object|.
 
-                                                *fugitive-:Gpedit*
-:Gpedit [revision]      |:pedit| a |fugitive-revision|.
+                                                *:Gvsplit*
+:Gvsplit [object]       |:vsplit| a |fugitive-object|.
 
-:Gsplit! [args]                 *fugitive-:Gsplit!* *fugitive-:Gvsplit!*
-:Gvsplit! [args]                *fugitive-:Gtabedit!* *fugitive-:Gpedit!*
-:Gtabedit! [args]       Like |:Git!|, but open the resulting temp file in a
-:Gpedit! [args]         split, tab, or preview window.
+                                                *:Gtabedit*
+:Gtabedit [object]      |:tabedit| a |fugitive-object|.
 
-                                                *fugitive-:Gread*
-:Gread [revision]       Empty the buffer and |:read| a |fugitive-revision|.
+                                                *:Gpedit*
+:Gpedit [object]        |:pedit| a |fugitive-object|.
+
+                                                *:Gread* *fugitive-:Gr*
+:Gread [object]         Empty the buffer and |:read| a |fugitive-object|.
                         When the argument is omitted, this is similar to
                         git-checkout on a work tree file or git-add on a stage
                         file, but without writing anything to disk.
 
-:{range}Gread [revision]
-                        |:read| in a |fugitive-revision| after {range}.
+:{range}Gread [object]  |:read| in a |fugitive-object| after {range}.
 
-                                                *fugitive-:Gread!*
+                                                *:Gread!* *fugitive-:Gr!*
 :Gread! [args]          Empty the buffer and |:read| the output of a Git
                         command.  For example, :Gread! show HEAD:%.
 
-:{range}Gread! [args]  |:read| the output of a Git command after {range}.
+:{range}Gread! [args]   |:read| the output of a Git command after {range}.
 
-                                        *fugitive-:Gw* *fugitive-:Gwrite*
+                                                *:Gwrite* *fugitive-:Gw*
 :Gwrite                 Write to the current file's path and stage the results.
                         When run in a work tree file, it is effectively git
                         add.  Elsewhere, it is effectively git-checkout.  A
@@ -168,185 +156,441 @@ that are part of Git repositories).
 
 :Gwrite {path}          You can give |:Gwrite| an explicit path of where in
                         the work tree to write.  You can also give a path like
-                        :0:foo.txt or even :0 to write to just that stage in
+                        :0:foo.txt or :0:% to write to just that stage in
                         the index.
 
-                                                *fugitive-:Gwq*
+                                                *: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
-                        index is used (which means a three-way diff during a
-                        merge conflict, making it a git-mergetool
-                        alternative).  The newer of the two files is placed
-                        to the right or bottom, depending on 'diffopt' and
-                        the width of the window relative to 'textwidth'.  Use
-                        |do| and |dp| and write to the index file to simulate
-                        "git add --patch". For the three-way diff, there is
-                        also d2o and d3o pulling the hunk to the middle from
-                        the left or the right window, respectively.
+                                                *:Gdiffsplit*
+:Gdiffsplit [object]    Perform a |vimdiff| against the given file, or if a
+                        commit is given, the current file in that commit.
+                        With no argument, the version in the index or work
+                        tree is used.  The newer of the two files is placed to
+                        the right or bottom, depending on 'diffopt' and the
+                        width of the window relative to 'textwidth'.  Use
+                        Vim's |do| and |dp| to stage and unstage changes.
 
-                                                *fugitive-:Gsdiff*
-:Gsdiff [revision]      Like |:Gdiff|, but always split horizontally.
+                                                *:Gdiffsplit!*
+:Gdiffsplit!            Diff against any and all direct ancestors, retaining
+                        focus on the current window.  During a merge conflict,
+                        this is a three-way diff against the "ours" and
+                        "theirs" ancestors.  Additional d2o and d3o maps are
+                        provided to obtain the hunk from the "ours" or
+                        "theirs" ancestor, respectively.
 
-                                                *fugitive-:Gvdiff*
-:Gvdiff [revision]      Like |:Gdiff|, but always split vertically.
+:Gdiffsplit! {object}   Like |:Gdiffsplit|, but retain focus on the current
+                        window.
 
-                                                *fugitive-:Gmove*
-:Gmove {destination}    Wrapper around git-mv that renames the buffer
-                        afterward.  The destination is relative to the current
-                        directory except when started with a /, in which case
-                        it is relative to the work tree.  (This is a holdover
-                        from before |:Grename| and will be removed.)  Add a !
-                        to pass -f.
+                                                *:Gvdiffsplit*
+:Gvdiffsplit [object]   Like |:Gdiffsplit|, but always split vertically.
 
-                                                *fugitive-:Grename*
-:Grename {destination}  Like |:Gmove| but operates relative to the parent
+                                                *:Ghdiffsplit*
+:Ghdiffsplit [object]   Like |:Gdiffsplit|, but always split horizontally.
+
+                                                *:GMove*
+:GMove {destination}    Wrapper around git-mv that renames the buffer
+                        afterward.  Add a ! to pass -f.
+
+                                                *:GRename*
+:GRename {destination}  Like |:GMove| but operates relative to the parent
                         directory of the current file.
 
-                                                *fugitive-:Gdelete*
-:Gdelete                Wrapper around git-rm that deletes the buffer
+                                                *:GDelete*
+:GDelete                Wrapper around git-rm that deletes the buffer
                         afterward.  When invoked in an index file, --cached is
                         passed.  Add a ! to pass -f and forcefully discard the
                         buffer.
 
-                                                *fugitive-:Gremove*
-:Gremove                Like :Gdelete, but keep the (now empty) buffer around.
+                                                *:GRemove*
+:GRemove                Like |:GDelete|, but keep the (now empty) buffer around.
 
-                                                *fugitive-:Gblame*
-:Gblame [flags]         Run git-blame on the file and open the results in a
-                        scroll bound vertical split.  You can give any of
-                        ltfnsewMC as flags and they will be passed along to
-                        git-blame.  The following maps, which work on the
-                        cursor line commit where sensible, are provided:
-
-                        g?    show this help
-                        A     resize to end of author column
-                        C     resize to end of commit column
-                        D     resize to end of date/time column
-                        q     close blame and return to blamed window
-                        gq    q, then |:Gedit| to return to work tree version
-                        <CR>  q, then open commit
-                        o     open commit in horizontal split
-                        O     open commit in new tab
-                        -     reblame at commit
-                        ~     reblame at [count]th first grandparent
-                        P     reblame at [count]th parent (like HEAD^[count])
-
-:[range]Gblame [flags]  Run git-blame on the given range.
-
-                                                *fugitive-:Gbrowse*
-:Gbrowse                Open the current file, blob, tree, commit, or tag
+                                                *:GBrowse*
+:GBrowse                Open the current file, blob, tree, commit, or tag
                         in your browser at the upstream hosting provider.
-                        If a range is given, it is appropriately appended to
-                        the URL as an anchor.
-
                         Upstream providers can be added by installing an
                         appropriate Vim plugin.  For example, GitHub can be
                         supported by installing rhubarb.vim, available at
                         <https://github.com/tpope/vim-rhubarb>.
 
-                        The hosting provider is determined by looking at the
-                        remote for the current or specified branch and falls
-                        back to "origin".  In the special case of a "."
-                        remote, a local instance of git-instaweb will be
-                        started and used.
+:GBrowse {object}       Like :GBrowse, but for a given |fugitive-object|.
 
-: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 [args]  Appends an anchor to the URL that emphasizes the
+                        selected lines. This also forces the URL to include a
+                        commit rather than a branch name so it remains valid
+                        if the file changes.  You can give a range of "0" to
+                        force this behavior without including an anchor.
 
-:Gbrowse [...]@{remote} Force using the given remote rather than the remote
+: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.
+                        determine which upstream repository to link to.
 
-:{range}Gbrowse [args]  Appends an anchor to the URL that emphasizes the
-                        selected lines.  You almost certainly want to give a
-                        "-" argument in this case to force the URL to include
-                        an exact revision.
+:GBrowse {url}          Open an arbitrary URL in your browser.
 
-:[range]Gbrowse! [args] Like :Gbrowse, but put the URL on the clipboard rather
+:[range]GBrowse! [args] Like :GBrowse, but put the URL on the clipboard rather
                         than opening it.
 
-MAPPINGS                                        *fugitive-mappings*
+MAPS                                            *fugitive-maps*
 
-These maps are available everywhere.
+These maps are available in both the |fugitive-summary| buffer and Fugitive
+object buffers, although not all maps make sense in all buffers.  Mappings
+that operate on the file or hunk under the cursor are generally available in
+visual mode to operate on multiple files or partial hunks.
 
-                                                *fugitive-c_CTRL-R_CTRL-G*
+                                                *fugitive-staging-maps*
+Staging/unstaging maps ~
+
+                                                *fugitive_s*
+s                       Stage (add) the file or hunk under the cursor.
+
+                                                *fugitive_u*
+u                       Unstage (reset) the file or hunk under the cursor.
+
+                                                *fugitive_-*
+-                       Stage or unstage the file or hunk under the cursor.
+
+                                                *fugitive_U*
+U                       Unstage everything.
+
+                                                *fugitive_X*
+X                       Discard the change under the cursor.  This uses
+                        `checkout` or `clean` under the hood.  A command is
+                        echoed that shows how to undo the change.  Consult
+                        `:messages` to see it again.  During a merge conflict,
+                        use 2X to call `checkout --ours` or 3X to call
+                        `checkout --theirs` .
+
+                                                *fugitive_=*
+=                       Toggle an inline diff of the file under the cursor.
+
+                                                *fugitive_>*
+>                       Insert an inline diff of the file under the cursor.
+
+                                                *fugitive_<*
+<                       Remove the inline diff of the file under the cursor.
+
+                                                *fugitive_gI*
+gI                      Open .git/info/exclude in a split and add the file
+                        under the cursor.  Use a count to open .gitignore.
+
+                                                *fugitive_I*
+I                       Invoke |:Git| add --patch or reset --patch on the file
+P                       under the cursor. On untracked files, this instead
+                        calls |:Git| add --intent-to-add.
+
+                                                *fugitive_d*
+Diff maps ~
+                                                *fugitive_dp*
+dp                      Invoke |:Git| diff on the file under the cursor.
+                        Deprecated in favor of inline diffs.
+
+                                                *fugitive_dd*
+dd                      Perform a |:Gdiffsplit| on the file under the cursor.
+
+                                                *fugitive_dv*
+dv                      Perform a |:Gvdiffsplit| on the file under the cursor.
+
+                                                *fugitive_ds* *fugitive_dh*
+ds                      Perform a |:Ghdiffsplit| on the file under the cursor.
+dh
+                                                *fugitive_dq*
+dq                      Close all but one diff buffer, and |:diffoff|! the
+                        last one.
+
+                                                *fugitive_d?*
+d?                      Show this help.
+
+                                                *fugitive-navigation-maps*
+Navigation maps ~
+
+                                                *fugitive_<CR>*
+<CR>                    Open the file or |fugitive-object| under the cursor.
+                        In a blob, this and similar maps jump to the patch
+                        from the diff where this was added, or where it was
+                        removed if a count was given.  If the line is still in
+                        the work tree version, passing a count takes you to
+                        it.
+
+                                                *fugitive_o*
+o                       Open the file or |fugitive-object| under the cursor in
+                        a new split.
+
+                                                *fugitive_gO*
+gO                      Open the file or |fugitive-object| under the cursor in
+                        a new vertical split.
+
+                                                *fugitive_O*
+O                       Open the file or |fugitive-object| under the cursor in
+                        a new tab.
+
+                                                *fugitive_p*
+p                       Open the file or |fugitive-object| under the cursor in
+                        a preview window.  In the status buffer, 1p is
+                        required to bypass the legacy usage instructions.
+
+                                                *fugitive_~*
+~                       Open the current file in the [count]th first ancestor.
+
+                                                *fugitive_P*
+P                       Open the current file in the [count]th parent.
+
+                                                *fugitive_C*
+C                       Open the commit containing the current file.
+
+                                                *fugitive_CTRL-P* *fugitive_(*
+(                       Jump to the previous file, hunk, or revision.
+
+                                                *fugitive_CTRL-N* *fugitive_)*
+)                       Jump to the next file, hunk, or revision.
+
+                                                *fugitive_[c*
+[c                      Jump to previous hunk, expanding inline diffs
+                        automatically.  (This shadows the Vim built-in |[c|
+                        that provides a similar operation in |diff| mode.)
+
+                                                *fugitive_]c*
+]c                      Jump to next hunk, expanding inline diffs
+                        automatically.  (This shadows the Vim built-in |]c|
+                        that provides a similar operation in |diff| mode.)
+
+                                                *fugitive_[/* *fugitive_[m*
+[/                      Jump to previous file, collapsing inline diffs
+[m                      automatically.  (Mnemonic: "/" appears in filenames,
+                        "m" appears in "filenames".)
+
+                                                *fugitive_]/* *fugitive_]m*
+]/                      Jump to next file, collapsing inline diffs
+]m                      automatically.  (Mnemonic: "/" appears in filenames,
+                        "m" appears in "filenames".)
+
+                                                *fugitive_i*
+i                       Jump to the next file or hunk, expanding inline diffs
+                        automatically.
+
+                                                *fugitive_[[*
+[[                      Jump [count] sections backward.
+
+                                                *fugitive_]]*
+]]                      Jump [count] sections forward.
+
+                                                *fugitive_[]*
+[]                      Jump [count] section ends backward.
+
+                                                *fugitive_][*
+][                      Jump [count] section ends forward.
+
+                                                *fugitive_star*
+*                       On the first column of a + or - diff line, search for
+                        the corresponding - or + line.  Otherwise, defer to
+                        built-in |star|.
+
+                                                *fugitive_#*
+#                       Same as "*", but search backward.
+
+                                                *fugitive_gu*
+gu                      Jump to file [count] in the "Untracked" or "Unstaged"
+                        section.
+
+                                                *fugitive_gU*
+gU                      Jump to file [count] in the "Unstaged" section.
+
+                                                *fugitive_gs*
+gs                      Jump to file [count] in the "Staged" section.
+
+                                                *fugitive_gp*
+gp                      Jump to file [count] in the "Unpushed" section.
+
+                                                *fugitive_gP*
+gP                      Jump to file [count] in the "Unpulled" section.
+
+                                                *fugitive_gr*
+gr                      Jump to file [count] in the "Rebasing" section.
+
+                                                *fugitive_gi*
+gi                      Open .git/info/exclude in a split.  Use a count to
+                        open .gitignore.
+
+                                                *fugitive_c*
+Commit maps ~
+
+cc                      Create a commit.
+
+ca                      Amend the last commit and edit the message.
+
+ce                      Amend the last commit without editing the message.
+
+cw                      Reword the last commit.
+
+cvc                     Create a commit with -v.
+
+cva                     Amend the last commit with -v
+
+cf                      Create a `fixup!` commit for the commit under the
+                        cursor.
+
+cF                      Create a `fixup!` commit for the commit under the
+                        cursor and immediately rebase it.
+
+cs                      Create a `squash!` commit for the commit under the
+                        cursor.
+
+cS                      Create a `squash!` commit for the commit under the
+                        cursor and immediately rebase it.
+
+cA                      Create a `squash!` commit for the commit under the
+                        cursor and edit the message.
+
+c<Space>                Populate command line with ":Git commit ".
+
+                                                *fugitive_cr*
+crc                     Revert the commit under the cursor.
+
+crn                     Revert the commit under the cursor in the index and
+                        work tree, but do not actually commit the changes.
+
+cr<Space>               Populate command line with ":Git revert ".
+
+                                                *fugitive_cm*
+cm<Space>               Populate command line with ":Git merge ".
+
+c?                      Show this help.
+
+                                                *fugitive_cb*
+                                                *fugitive_co*
+Checkout/branch maps ~
+
+coo                     Check out the commit under the cursor.
+
+cb<Space>               Populate command line with ":Git branch ".
+
+co<Space>               Populate command line with ":Git checkout ".
+
+cb?                     Show this help.
+co?
+
+                                                *fugitive_cz*
+Stash maps ~
+
+czz                     Push stash.  Pass a [count] of 1 to add
+                        `--include-untracked` or 2 to add `--all`.
+
+czw                     Push stash of worktree.  Like `czz` with
+                        `--keep-index`.
+
+czA                     Apply topmost stash, or stash@{count}.
+
+cza                     Apply topmost stash, or stash@{count}, preserving the
+                        index.
+
+czP                     Pop topmost stash, or stash@{count}.
+
+czp                     Pop topmost stash, or stash@{count}, preserving the
+                        index.
+
+cz<Space>               Populate command line with ":Git stash ".
+
+cz?                     Show this help.
+
+                                                *fugitive_r*
+Rebase maps ~
+
+ri                      Perform an interactive rebase.  Uses ancestor of
+u                       commit under cursor as upstream if available.
+
+rf                      Perform an autosquash rebase without editing the todo
+                        list.  Uses ancestor of commit under cursor as
+                        upstream if available.
+
+ru                      Perform an interactive rebase against @{upstream}.
+
+rp                      Perform an interactive rebase against @{push}.
+
+rr                      Continue the current rebase.
+
+rs                      Skip the current commit and continue the current
+                        rebase.
+
+ra                      Abort the current rebase.
+
+re                      Edit the current rebase todo list.
+
+rw                      Perform an interactive rebase with the commit under
+                        the cursor set to `reword`.
+
+rm                      Perform an interactive rebase with the commit under
+                        the cursor set to `edit`.
+
+rd                      Perform an interactive rebase with the commit under
+                        the cursor set to `drop`.
+
+r<Space>                Populate command line with ":Git rebase ".
+
+r?                      Show this help.
+
+                                                *fugitive-misc-maps*
+Miscellaneous maps ~
+
+                                                *fugitive_gq* *fugitive_q*
+gq                      Close the status buffer.
+
+                                                *fugitive_.*
+.                       Start a |:| command line with the file under the
+                        cursor prepopulated.
+
+                                                *fugitive_g?*
+g?                      Show help for |fugitive-maps|.
+
+                                                *fugitive-global-maps*
+Global maps ~
+
+                                                *fugitive_c_CTRL-R_CTRL-G*
 <C-R><C-G>              On the command line, recall the path to the current
-                        object (that is, a representation of the object
-                        recognized by |:Gedit|).
+                        |fugitive-object| (that is, a representation of the
+                        object recognized by |:Gedit|).
 
-                                                *fugitive-y_CTRL-G*
-["x]y<C-G>              Yank the commit SHA and path to the current object.
+                                                *fugitive_y_CTRL-G*
+["x]y<C-G>              Yank the path to the current |fugitive-object|.
 
-These maps are available in Git objects.
+                                                *g:fugitive_no_maps*
+Global maps can be disabled with the g:fugitive_no_maps option.
+>
+        let g:fugitive_no_maps = 1
+<
+SPECIFYING OBJECTS                      *fugitive-object* *fugitive-revision*
 
-                                                *fugitive-<CR>*
-<CR>                    Jump to the revision under the cursor.
+Fugitive objects are either work tree files or Git revisions as defined in the
+"SPECIFYING REVISIONS" section in the git-rev-parse man page, with expansions
+inspired by |cmdline-special| layered on top.  For commands that accept an
+optional object, the default is the file in the index for work tree files and
+the work tree file for everything else.  Example objects follow.
 
-                                                *fugitive-o*
-o                       Jump to the revision under the cursor in a new split.
-
-                                                *fugitive-S*
-S                       Jump to the revision under the cursor in a new
-                        vertical split.
-
-                                                *fugitive-O*
-O                       Jump to the revision under the cursor in a new tab.
-
-                                                *fugitive--*
--                       Go to the tree containing the current tree or blob.
-
-                                                *fugitive-~*
-~                       Go to the current file in the [count]th first
-                        ancestor.
-
-                                                *fugitive-P*
-P                       Go to the current file in the [count]th parent.
-
-                                                *fugitive-C*
-C                       Go to the commit containing the current file.
-
-                                                *fugitive-.*
-.                       Start a |:| command line with the current revision
-                        prepopulated at the end of the line.
-
-                                                *fugitive-a*
-a                       Show the current tag, commit, or tree in an alternate
-                        format.
-
-SPECIFYING REVISIONS                            *fugitive-revision*
-
-Fugitive revisions are similar to Git revisions as defined in the "SPECIFYING
-REVISIONS" section in the git-rev-parse man page.  For commands that accept an
-optional revision, the default is the file in the index for work tree files
-and the work tree file for everything else.  Example revisions follow.
-
-Revision        Meaning ~
-HEAD            .git/HEAD
-refs/heads/x    .git/refs/heads/x
+Object          Meaning ~
 @               The commit referenced by @ aka HEAD
+master          The commit referenced by master
 master^         The parent of the commit referenced by master
+master...other  The merge base of master and other
 master:         The tree referenced by master
-/master         The file named master in the work tree
+./master        The file named master in the working directory
+:(top)master    The file named master in the work tree
 Makefile        The file named Makefile in the work tree
 @^:Makefile     The file named Makefile in the parent of HEAD
 :Makefile       The file named Makefile in the index (writable)
--               The current file in HEAD
-^               The current file in the previous commit
-~3              The current file 3 commits ago
-:               .git/index (Same as |:Gstatus|)
-:0              The current file in the index
-:1              The current file's common ancestor during a conflict
-:2              The current file in the target branch during a conflict
-:3              The current file in the merged branch during a conflict
-:/foo           The most recent commit with "foo" in the message
+@~2:%           The current file in the grandparent of HEAD
+:%              The current file in the index
+:1:%            The current file's common ancestor during a conflict
+:2:#            The alternate file in the target branch during a conflict
+:3:#5           The file from buffer #5 in the merged branch during a conflict
+!               The commit owning the current file
+!:Makefile      The file named Makefile in the commit owning the current file
+!3^2            The second parent of the commit owning buffer #3
+.git/config     The repo config file
+:               The |fugitive-summary| buffer
+-               A temp file containing the last |:Git| invocation's output
+<cfile>         The file or commit under the cursor
 
 STATUSLINE                                      *fugitive-statusline*
 
@@ -355,18 +599,86 @@ Add %{FugitiveStatusline()} to your statusline to get an indicator including
 the current branch and the currently edited file's commit.  If you don't have
 a statusline, this one matches the default when 'ruler' is set:
 >
-    set statusline=%<%f\ %h%m%r%{FugitiveStatusline()}%=%-14.(%l,%c%V%)\ %P
+        set statusline=%<%f\ %h%m%r%{FugitiveStatusline()}%=%-14.(%l,%c%V%)\ %P
 <
-                                *FugitiveHead(...)* *fugitive#head(...)*
-Use FugitiveHead() to return the name of the current branch. If the current
-HEAD is detached, FugitiveHead() will return the empty string, unless the
-optional argument is given, in which case the hash of the current commit will
-be truncated to the given number of characters.
+AUTOCOMMANDS                                    *fugitive-autocommands*
+
+A handful of |User| |autocommands| are provided to allow extending and
+overriding Fugitive behaviors.  Example usage:
+>
+        autocmd User FugitiveBlob call s:BlobOverrides()
+<
+                                                *User_FugitiveIndex*
+FugitiveIndex           After loading the |fugitive-summary| buffer.
+
+                                                *User_FugitiveTag*
+FugitiveTag             After loading a tag object.
+
+                                                *User_FugitiveCommit*
+FugitiveCommit          After loading a commit object.
+
+                                                *User_FugitiveTree*
+FugitiveTree            After loading a tree (directory) object.
+
+                                                *User_FugitiveBlob*
+FugitiveBlob            After loading a blob (file) object.  This includes
+                        both committed blobs which are read only, and staged
+                        blobs which can be edited and written.  Check
+                        &modifiable to distinguish between the two.
+
+                                                *User_FugitiveChanged*
+FugitiveChanged         After any event which can potentially change the
+                        repository, for example, any invocation of |:Git|.
+                        Originally intended for expiring caches, but can have
+                        other uses.
+
+API                                             *fugitive-api*
+
+Officially supported functions are documented inline in plugin/fugitive.vim.
+
+DEPRECATIONS                                    *fugitive-deprecated*
+
+The following commands are deprecated in favor of replacements that adhere to
+a new naming scheme.  Remember that |:Git| can be shortened to |:G|, so
+replacements using it are just one space character longer than the legacy
+version.
+
+*:Gremove*      Superseded by |:GRemove|.
+*:Gdelete*      Superseded by |:GDelete|.
+*:Gmove*        Superseded by |:GMove|.
+*:Grename*      Superseded by |:GRename|.
+*:Gbrowse*      Superseded by |:GBrowse|.
+*:Gdiff*        Superseded by |:Gdiffsplit|
+*:Gsdiff*       Superseded by |:Ghdiffsplit|
+*:Gvdiff*       Superseded by |:Gvdiffsplit| or |:vert| |:Gdiffsplit|.
+*:Gblame*       Superseded by |:Git_blame|.
+*:Gcommit*      Superseded by |:Git| commit.
+*:Gmerge*       Superseded by |:Git| merge and |:Git_mergetool|.
+*:Gpull*        Superseded by |:Git| pull.
+*:Grebase*      Superseded by |:Git| rebase.
+*:Grevert*      Superseded by |:Git| revert.
+*:Gpush*        Superseded by |:Git| push.
+*:Gfetch*       Superseded by |:Git| fetch.
+*:Glog*         Superseded by |:Gclog|.
+*:Gstatus*      Superseded by |:Git| (with no arguments).
+*:Git!*         Superseded by |:Git_--paginate|.
+*:Gsplit!*      Superseded by |:Git_--paginate|.
+*:Gvsplit!*     Superseded by :vert Git --paginate.
+*:Gtabsplit!*   Superseded by :tab Git --paginate.
+*:Gpedit!*      Superseded by :Git! --paginate.
+
+                                                *User_Fugitive*
+Fugitive used to support `:autocmd User Fugitive` to run an autocommand after
+loading any buffer belonging to a Git repository, but this is being phased
+out.  Instead, one can leverage regular autocommand events like |BufNewFile|
+and |BufReadPost|, and check !empty(FugitiveGitDir()) to confirm Fugitive has
+found a repository.  See also |fugitive-autocommands| for other, more
+selective events.
 
 ABOUT                                           *fugitive-about*
 
 Grab the latest version or report a bug on GitHub:
 
-http://github.com/tpope/vim-fugitive
+https://github.com/tpope/vim-fugitive
 
  vim:tw=78:et:ft=help:norl:

ftplugin/fugitiveblame.vim

@@ -0,0 +1,6 @@
+if exists("b:did_ftplugin") || !exists("*FugitiveGitDir")
+  finish
+endif
+let b:did_ftplugin = 1
+
+call fugitive#BlameFileType()

plugin/fugitive.vim

@@ -1,6 +1,6 @@
 " fugitive.vim - A Git wrapper so awesome, it should be illegal
 " Maintainer:   Tim Pope <http://tpo.pe/>
-" Version:      2.4
+" Version:      3.3
 " GetLatestVimScripts: 2975 1 :AutoInstall: fugitive.vim
 
 if exists('g:loaded_fugitive')
@@ -8,45 +8,269 @@ if exists('g:loaded_fugitive')
 endif
 let g:loaded_fugitive = 1
 
-function! s:shellslash(path) abort
-  if &shell =~? 'cmd' || exists('+shellslash') && !&shellslash
-    return tr(a:path, '\', '/')
+let s:bad_git_dir = '/$\|^fugitive:'
+
+" FugitiveGitDir() returns the detected Git dir for the given buffer number,
+" or the current buffer if no argument is passed.  This will be an empty
+" string if no Git dir was found.  Use !empty(FugitiveGitDir()) to check if
+" Fugitive is active in the current buffer.  Do not rely on this for direct
+" filesystem access; use FugitiveFind('.git/whatever') instead.
+function! FugitiveGitDir(...) abort
+  if v:version < 704
+    return ''
+  elseif !a:0 || type(a:1) == type(0) && a:1 < 0
+    if exists('g:fugitive_event')
+      return g:fugitive_event
+    endif
+    let dir = get(b:, 'git_dir', '')
+    if empty(dir) && (empty(bufname('')) || &buftype =~# '^\%(nofile\|acwrite\|quickfix\|terminal\|prompt\)$')
+      return FugitiveExtractGitDir(getcwd())
+    elseif (!exists('b:git_dir') || b:git_dir =~# s:bad_git_dir) && empty(&buftype)
+      let b:git_dir = FugitiveExtractGitDir(expand('%:p'))
+      return b:git_dir
+    endif
+    return dir =~# s:bad_git_dir ? '' : dir
+  elseif type(a:1) == type(0)
+    if a:1 == bufnr('') && (!exists('b:git_dir') || b:git_dir =~# s:bad_git_dir) && empty(&buftype)
+      let b:git_dir = FugitiveExtractGitDir(expand('%:p'))
+    endif
+    let dir = getbufvar(a:1, 'git_dir')
+    return dir =~# s:bad_git_dir ? '' : dir
+  elseif type(a:1) == type('')
+    return substitute(s:Slash(a:1), '/$', '', '')
+  elseif type(a:1) == type({})
+    return get(a:1, 'git_dir', '')
   else
-    return a:path
+    return ''
   endif
 endfunction
 
-function! FugitiveIsGitDir(path) abort
-  let path = substitute(a:path, '[\/]$', '', '') . '/'
-  return getfsize(path.'HEAD') > 10 && (
+" FugitiveReal() takes a fugitive:// URL and returns the corresponding path in
+" the work tree.  This may be useful to get a cleaner path for inclusion in
+" the statusline, for example.  Note that the file and its parent directories
+" are not guaranteed to exist.
+"
+" This is intended as an abstract API to be used on any "virtual" path.  For a
+" buffer named foo://bar, check for a function named FooReal(), and if it
+" exists, call FooReal("foo://bar").
+function! FugitiveReal(...) abort
+  let file = a:0 ? a:1 : @%
+  if file =~# '^\a\a\+:' || a:0 > 1
+    return call('fugitive#Real', [file] + a:000[1:-1])
+  elseif file =~# '^/\|^\a:\|^$'
+    return file
+  else
+    return fnamemodify(file, ':p' . (file =~# '[\/]$' ? '' : ':s?[\/]$??'))
+  endif
+endfunction
+
+" FugitiveFind() takes a Fugitive object and returns the appropriate Vim
+" buffer name.  You can use this to generate Fugitive URLs ("HEAD:README") or
+" to get the absolute path to a file in the Git dir (".git/HEAD"), the common
+" dir (".git/config"), or the work tree (":(top)Makefile").
+"
+" An optional second argument provides the Git dir, or the buffer number of a
+" buffer with a Git dir.  The default is the current buffer.
+function! FugitiveFind(...) abort
+  if a:0 && type(a:1) ==# type({})
+    return call('fugitive#Find', a:000[1:-1] + [FugitiveGitDir(a:1)])
+  else
+    return fugitive#Find(a:0 ? a:1 : bufnr(''), FugitiveGitDir(a:0 > 1 ? a:2 : -1))
+  endif
+endfunction
+
+function! FugitivePath(...) abort
+  if a:0 > 2 && type(a:1) ==# type({})
+    return fugitive#Path(a:2, a:3, FugitiveGitDir(a:1))
+  elseif a:0 && type(a:1) ==# type({})
+    return FugitiveReal(a:0 > 1 ? a:2 : @%)
+  elseif a:0 > 1
+    return fugitive#Path(a:1, a:2, FugitiveGitDir(a:0 > 2 ? a:3 : -1))
+  else
+    return FugitiveReal(a:0 ? a:1 : @%)
+  endif
+endfunction
+
+" FugitiveParse() takes a fugitive:// URL and returns a 2 element list
+" containing an object name ("commit:file") and the Git dir.  It's effectively
+" the inverse of FugitiveFind().
+function! FugitiveParse(...) abort
+  let path = s:Slash(a:0 ? a:1 : @%)
+  if path !~# '^fugitive:'
+    return ['', '']
+  endif
+  let vals = matchlist(path, '\c^fugitive:\%(//\)\=\(.\{-\}\)\%(//\|::\)\(\x\{40,\}\|[0-3]\)\(/.*\)\=$')
+  if len(vals)
+    return [(vals[2] =~# '^.$' ? ':' : '') . vals[2] . substitute(vals[3], '^/', ':', ''), vals[1]]
+  endif
+  let v:errmsg = 'fugitive: invalid Fugitive URL ' . path
+  throw v:errmsg
+endfunction
+
+" FugitiveResult() returns an object encapsulating the result of the most
+" recent :Git command.  Will be empty if no result is available.  During a
+" User FugitiveChanged event, this is guaranteed to correspond to the :Git
+" command that triggered the event, or be empty if :Git was not the trigger.
+" Pass in the name of a temp buffer to get the result object for that command
+" instead.  Contains the following keys:
+"
+" * "args": List of command arguments, starting with the subcommand.  Will be
+"   empty for usages like :Git --help.
+" * "git_dir": Git dir of the relevant repository.
+" * "exit_status": The integer exit code of the process.
+" * "flags": Flags passed directly to Git, like -c and --help.
+" * "file": Path to file containing command output.  Not guaranteed to exist,
+"   so verify with filereadable() before trying to access it.
+function! FugitiveResult(...) abort
+  return call('fugitive#Result', a:000)
+endfunction
+
+" FugitivePrepare() constructs a Git command string which can be executed with
+" functions like system() and commands like :!.  Integer arguments will be
+" treated as buffer numbers, and the appropriate relative path inserted in
+" their place.
+"
+" If the first argument is a string that looks like a path or an empty string,
+" it will be used as the Git dir.  If it's a buffer number, the Git dir for
+" that buffer will be used.  The default is the current buffer.
+function! FugitivePrepare(...) abort
+  return call('fugitive#ShellCommand', a:000)
+endfunction
+
+" FugitiveConfig() get returns an opaque structure that can be passed to other
+" FugitiveConfig functions in lieu of a Git directory.  This can be faster
+" when performing multiple config queries.  Do not rely on the internal
+" structure of the return value as it is not guaranteed.  If you want a full
+" dictionary of every config value, use FugitiveConfigGetRegexp('.*').
+"
+" An optional argument provides the Git dir, or the buffer number of a
+" buffer with a Git dir.  The default is the current buffer.  Pass a blank
+" string to limit to the global config.
+function! FugitiveConfig(...) abort
+  return call('fugitive#Config', a:000)
+endfunction
+
+" FugitiveConfigGet() retrieves a Git configuration value.  An optional second
+" argument can be either the object returned by FugitiveConfig(), or a Git
+" dir or buffer number to be passed along to FugitiveConfig().
+function! FugitiveConfigGet(name, ...) abort
+  return get(call('FugitiveConfigGetAll', [a:name] + (a:0 ? [a:1] : [])), 0, get(a:, 2, ''))
+endfunction
+
+" FugitiveConfigGetAll() is like FugitiveConfigGet() but returns a list of
+" all values.
+function! FugitiveConfigGetAll(name, ...) abort
+  return call('fugitive#ConfigGetAll', [a:name] + a:000)
+endfunction
+
+" FugitiveConfigGetRegexp() retrieves a dictionary of all configuration values
+" with a key matching the given pattern.  Like git config --get-regexp, but
+" using a Vim regexp.  Second argument has same semantics as
+" FugitiveConfigGet().
+function! FugitiveConfigGetRegexp(pattern, ...) abort
+  return call('fugitive#ConfigGetRegexp', [a:pattern] + a:000)
+endfunction
+
+" FugitiveRemoteUrl() retrieves the remote URL for the given remote name,
+" defaulting to the current branch's remote or "origin" if no argument is
+" given.  Similar to `git remote get-url`, but also attempts to resolve HTTP
+" redirects and SSH host aliases.
+"
+" An optional second argument provides the Git dir, or the buffer number of a
+" buffer with a Git dir.  The default is the current buffer.
+function! FugitiveRemoteUrl(...) abort
+  return call('fugitive#RemoteUrl', a:000)
+endfunction
+
+" FugitiveHead() retrieves the name of the current branch. If the current HEAD
+" is detached, FugitiveHead() will return the empty string, unless the
+" optional argument is given, in which case the hash of the current commit
+" will be truncated to the given number of characters.
+"
+" An optional second argument provides the Git dir, or the buffer number of a
+" buffer with a Git dir.  The default is the current buffer.
+function! FugitiveHead(...) abort
+  if a:0 && type(a:1) ==# type({})
+    let dir = FugitiveGitDir(a:1)
+    let arg = get(a:, 2, 0)
+  elseif a:0 > 1
+    let dir = FugitiveGitDir(a:2)
+    let arg = a:1
+  else
+    let dir = FugitiveGitDir()
+    let arg = get(a:, 1, 0)
+  endif
+  if empty(dir)
+    return ''
+  endif
+  return fugitive#Head(arg, dir)
+endfunction
+
+function! FugitiveStatusline(...) abort
+  if empty(get(b:, 'git_dir', ''))
+    return ''
+  endif
+  return fugitive#Statusline()
+endfunction
+
+function! FugitiveCommonDir(...) abort
+  let dir = FugitiveGitDir(a:0 ? a:1 : -1)
+  if empty(dir)
+    return ''
+  endif
+  return fugitive#Find('.git/refs/..', dir)
+endfunction
+
+function! FugitiveWorkTree(...) abort
+  let tree = s:Tree(FugitiveGitDir(a:0 ? a:1 : -1))
+  if tree isnot# 0 || a:0 > 1
+    return tree
+  else
+    return ''
+  endif
+endfunction
+
+function! FugitiveIsGitDir(...) abort
+  if !a:0 || type(a:1) !=# type('')
+    return !empty(call('FugitiveGitDir', a:000))
+  endif
+  let path = substitute(a:1, '[\/]$', '', '') . '/'
+  return len(path) && getfsize(path.'HEAD') > 10 && (
         \ isdirectory(path.'objects') && isdirectory(path.'refs') ||
         \ getftype(path.'commondir') ==# 'file')
 endfunction
 
 let s:worktree_for_dir = {}
 let s:dir_for_worktree = {}
-function! FugitiveTreeForGitDir(git_dir) abort
-  let dir = substitute(s:shellslash(a:git_dir), '/$', '', '')
+function! s:Tree(path) abort
+  let dir = a:path
   if dir =~# '/\.git$'
     return len(dir) ==# 5 ? '/' : dir[0:-6]
+  elseif dir ==# ''
+    return ''
   endif
   if !has_key(s:worktree_for_dir, dir)
     let s:worktree_for_dir[dir] = ''
     let config_file = dir . '/config'
     if filereadable(config_file)
       let config = readfile(config_file,'',10)
-      call filter(config,'v:val =~# "^\\s*worktree *="')
-      if len(config) == 1
-        let worktree = matchstr(config[0], '= *\zs.*')
+      let wt_config = filter(copy(config),'v:val =~# "^\\s*worktree *="')
+      if len(wt_config) == 1
+        let worktree = FugitiveVimPath(matchstr(wt_config[0], '= *\zs.*'))
+      else
+        call filter(config,'v:val =~# "^\\s*bare *= *false *$"')
+        if len(config)
+          let s:worktree_for_dir[dir] = 0
+        endif
       endif
     elseif filereadable(dir . '/gitdir')
-      let worktree = fnamemodify(readfile(dir . '/gitdir')[0], ':h')
+      let worktree = fnamemodify(FugitiveVimPath(readfile(dir . '/gitdir')[0]), ':h')
       if worktree ==# '.'
         unlet! worktree
       endif
     endif
     if exists('worktree')
-      let s:worktree_for_dir[dir] = worktree
+      let s:worktree_for_dir[dir] = s:Slash(resolve(worktree))
       let s:dir_for_worktree[s:worktree_for_dir[dir]] = dir
     endif
   endif
@@ -57,35 +281,56 @@ function! FugitiveTreeForGitDir(git_dir) abort
   endif
 endfunction
 
+function! s:CeilingDirectories() abort
+  if !exists('s:ceiling_directories')
+    let s:ceiling_directories = []
+    let resolve = 1
+    for dir in split($GIT_CEILING_DIRECTORIES, has('win32') ? ';' : ':', 1)
+      if empty(dir)
+        let resolve = 0
+      elseif resolve
+        call add(s:ceiling_directories, resolve(dir))
+      else
+        call add(s:ceiling_directories, dir)
+      endif
+    endfor
+  endif
+  return s:ceiling_directories + get(g:, 'ceiling_directories', [])
+endfunction
+
 function! FugitiveExtractGitDir(path) abort
-  let path = s:shellslash(a:path)
+  let path = s:Slash(a:path)
   if path =~# '^fugitive:'
     return matchstr(path, '\C^fugitive:\%(//\)\=\zs.\{-\}\ze\%(//\|::\|$\)')
+  elseif empty(path)
+    return ''
   elseif isdirectory(path)
     let path = fnamemodify(path, ':p:s?/$??')
   else
     let path = fnamemodify(path, ':p:h:s?/$??')
   endif
+  let pre = substitute(matchstr(path, '^\a\a\+\ze:'), '^.', '\u&', '')
+  if len(pre) && exists('*' . pre . 'Real')
+    let path = s:Slash({pre}Real(path))
+  endif
   let root = resolve(path)
   if root !=# path
-    silent! exe haslocaldir() ? 'lcd .' : 'cd .'
+    silent! exe (haslocaldir() ? 'lcd' : exists(':tcd') && haslocaldir(-1) ? 'tcd' : 'cd') '.'
   endif
   let previous = ""
+  let env_git_dir = len($GIT_DIR) ? s:Slash(simplify(fnamemodify(FugitiveVimPath($GIT_DIR), ':p:s?[\/]$??'))) : ''
+  call s:Tree(env_git_dir)
   while root !=# previous
     if root =~# '\v^//%([^/]+/?)?$'
       break
     endif
-    if index(split($GIT_CEILING_DIRECTORIES, ':'), root) >= 0
+    if index(s:CeilingDirectories(), root) >= 0
       break
     endif
-    if root ==# $GIT_WORK_TREE && FugitiveIsGitDir($GIT_DIR)
-      return simplify(fnamemodify($GIT_DIR, ':p:s?[\/]$??'))
-    endif
-    if FugitiveIsGitDir($GIT_DIR)
-      call FugitiveTreeForGitDir(simplify(fnamemodify($GIT_DIR, ':p:s?[\/]$??')))
-      if has_key(s:dir_for_worktree, root)
-        return s:dir_for_worktree[root]
-      endif
+    if root ==# $GIT_WORK_TREE && FugitiveIsGitDir(env_git_dir)
+      return env_git_dir
+    elseif has_key(s:dir_for_worktree, root)
+      return s:dir_for_worktree[root]
     endif
     let dir = substitute(root, '[\/]$', '', '') . '/.git'
     let type = getftype(dir)
@@ -95,10 +340,11 @@ function! FugitiveExtractGitDir(path) abort
       return resolve(dir)
     elseif type !=# '' && filereadable(dir)
       let line = get(readfile(dir, '', 1), 0, '')
-      if line =~# '^gitdir: \.' && FugitiveIsGitDir(root.'/'.line[8:-1])
-        return simplify(root.'/'.line[8:-1])
-      elseif line =~# '^gitdir: ' && FugitiveIsGitDir(line[8:-1])
-        return line[8:-1]
+      let file_dir = s:Slash(FugitiveVimPath(matchstr(line, '^gitdir: \zs.*')))
+      if file_dir !~# '^/\|^\a:' && FugitiveIsGitDir(root . '/' . file_dir)
+        return simplify(root . '/' . file_dir)
+      elseif len(file_dir) && FugitiveIsGitDir(file_dir)
+        return file_dir
       endif
     elseif FugitiveIsGitDir(root)
       return root
@@ -110,80 +356,265 @@ function! FugitiveExtractGitDir(path) abort
 endfunction
 
 function! FugitiveDetect(path) abort
-  if exists('b:git_dir') && (b:git_dir ==# '' || b:git_dir =~# '/$')
+  if v:version < 704
+    return ''
+  endif
+  if exists('b:git_dir') && b:git_dir =~# '^$\|' . s:bad_git_dir
     unlet b:git_dir
   endif
   if !exists('b:git_dir')
-    let dir = FugitiveExtractGitDir(a:path)
-    if dir !=# ''
-      let b:git_dir = dir
+    let b:git_dir = FugitiveExtractGitDir(a:path)
+  endif
+  if empty(b:git_dir) || !exists('#User#Fugitive')
+    return ''
+  endif
+  if v:version >= 704 || (v:version == 703 && has('patch442'))
+    doautocmd <nomodeline> User Fugitive
+  elseif &modelines > 0
+    let modelines = &modelines
+    try
+      set modelines=0
+      doautocmd User Fugitive
+    finally
+      let &modelines = modelines
+    endtry
+  else
+    doautocmd User Fugitive
+  endif
+  return ''
+endfunction
+
+function! FugitiveVimPath(path) abort
+  if exists('+shellslash') && !&shellslash
+    return tr(a:path, '/', '\')
+  else
+    return a:path
+  endif
+endfunction
+
+function! FugitiveGitPath(path) abort
+  return s:Slash(a:path)
+endfunction
+
+if exists('+shellslash')
+  function! s:Slash(path) abort
+    return tr(a:path, '\', '/')
+  endfunction
+else
+  function! s:Slash(path) abort
+    return a:path
+  endfunction
+endif
+
+function! s:ProjectionistDetect() abort
+  let file = s:Slash(get(g:, 'projectionist_file', ''))
+  let dir = FugitiveExtractGitDir(file)
+  let base = matchstr(file, '^fugitive://.\{-\}//\x\+')
+  if empty(base)
+    let base = s:Tree(dir)
+  endif
+  if !empty(base)
+    if exists('+shellslash') && !&shellslash
+      let base = tr(base, '/', '\')
+    endif
+    let file = FugitiveCommonDir(dir) . '/info/projections.json'
+    if filereadable(file)
+      call projectionist#append(base, file)
     endif
   endif
-  if exists('b:git_dir')
-    return fugitive#Init()
-  endif
 endfunction
 
-function! FugitiveStatusline(...) abort
-  if !exists('b:git_dir')
-    return ''
-  endif
-  return fugitive#Statusline()
-endfunction
+let s:addr_other = has('patch-8.1.560') ? '-addr=other' : ''
+let s:addr_tabs  = has('patch-7.4.542') ? '-addr=tabs' : ''
+let s:addr_wins  = has('patch-7.4.542') ? '-addr=windows' : ''
 
-function! FugitiveHead(...) abort
-  if !exists('b:git_dir')
-    return ''
-  endif
-  return fugitive#repo().head(a:0 ? a:1 : 0)
-endfunction
+if exists(':G') != 2
+  command! -bang -nargs=? -range=-1 -complete=customlist,fugitive#Complete G   exe fugitive#Command(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>)
+endif
+command! -bang -nargs=? -range=-1 -complete=customlist,fugitive#Complete Git exe fugitive#Command(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>)
 
-function! FugitivePath(...) abort
-  let file = fnamemodify(a:0 ? a:1 : @%, ':p')
-  if file =~? '^fugitive:'
-    return fugitive#Path(file)
-  else
-    return file
-  endif
-endfunction
+if exists(':Gstatus') != 2 && get(g:, 'fugitive_legacy_commands', 1)
+  exe 'command! -bang -bar     -range=-1' s:addr_other 'Gstatus exe fugitive#Command(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>)'
+        \ '|echohl WarningMSG|echomsg ":Gstatus is deprecated in favor of :Git (with no arguments)"|echohl NONE'
+endif
 
-function! FugitiveReal(...) abort
-  return call('FugitivePath', a:000)
-endfunction
+for s:cmd in ['Commit', 'Revert', 'Merge', 'Rebase', 'Pull', 'Push', 'Fetch', 'Blame']
+  if exists(':G' . tolower(s:cmd)) != 2 && get(g:, 'fugitive_legacy_commands', 1)
+    exe 'command! -bang -nargs=? -range=-1 -complete=customlist,fugitive#' . s:cmd . 'Complete G' . tolower(s:cmd)
+          \ 'echohl WarningMSG|echomsg ":G' . tolower(s:cmd) . ' is deprecated in favor of :Git ' . tolower(s:cmd) . '"|echohl NONE|'
+          \ 'exe fugitive#Command(<line1>, <count>, +"<range>", <bang>0, "<mods>", "' . tolower(s:cmd) . ' " . <q-args>)'
+  endif
+endfor
+unlet s:cmd
+
+exe "command! -bar -bang -nargs=? -complete=customlist,fugitive#CdComplete Gcd  exe fugitive#Cd(<q-args>, 0)"
+exe "command! -bar -bang -nargs=? -complete=customlist,fugitive#CdComplete Glcd exe fugitive#Cd(<q-args>, 1)"
+
+exe 'command! -bang -nargs=? -range=-1' s:addr_wins '-complete=customlist,fugitive#GrepComplete Ggrep  exe fugitive#GrepCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>)'
+exe 'command! -bang -nargs=? -range=-1' s:addr_wins '-complete=customlist,fugitive#GrepComplete Gcgrep exe fugitive#GrepCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>)'
+exe 'command! -bang -nargs=? -range=-1' s:addr_wins '-complete=customlist,fugitive#GrepComplete Glgrep exe fugitive#GrepCommand(0, <count> > 0 ? <count> : 0, +"<range>", <bang>0, "<mods>", <q-args>)'
+
+if exists(':Glog') != 2 && get(g:, 'fugitive_legacy_commands', 1)
+  exe 'command! -bang -nargs=? -range=-1 -complete=customlist,fugitive#LogComplete Glog  :exe fugitive#LogCommand(<line1>,<count>,+"<range>",<bang>0,"<mods>",<q-args>, "")'
+        \ '|echohl WarningMSG|echomsg ":Glog is deprecated in favor of :Gclog"|echohl NONE'
+endif
+exe 'command! -bang -nargs=? -range=-1 -complete=customlist,fugitive#LogComplete Gclog :exe fugitive#LogCommand(<line1>,<count>,+"<range>",<bang>0,"<mods>",<q-args>, "c")'
+exe 'command! -bang -nargs=? -range=-1 -complete=customlist,fugitive#LogComplete GcLog :exe fugitive#LogCommand(<line1>,<count>,+"<range>",<bang>0,"<mods>",<q-args>, "c")'
+exe 'command! -bang -nargs=? -range=-1 -complete=customlist,fugitive#LogComplete Gllog :exe fugitive#LogCommand(<line1>,<count>,+"<range>",<bang>0,"<mods>",<q-args>, "l")'
+exe 'command! -bang -nargs=? -range=-1 -complete=customlist,fugitive#LogComplete GlLog :exe fugitive#LogCommand(<line1>,<count>,+"<range>",<bang>0,"<mods>",<q-args>, "l")'
+
+exe 'command! -bar -bang -nargs=*                          -complete=customlist,fugitive#EditComplete   Ge       exe fugitive#Open("edit<bang>", 0, "<mods>", <q-args>, [<f-args>])'
+exe 'command! -bar -bang -nargs=*                          -complete=customlist,fugitive#EditComplete   Gedit    exe fugitive#Open("edit<bang>", 0, "<mods>", <q-args>, [<f-args>])'
+exe 'command! -bar -bang -nargs=*                          -complete=customlist,fugitive#ReadComplete   Gpedit   exe fugitive#Open("pedit", <bang>0, "<mods>", <q-args>, [<f-args>])'
+exe 'command! -bar -bang -nargs=* -range=-1' s:addr_other '-complete=customlist,fugitive#ReadComplete   Gsplit   exe fugitive#Open((<count> > 0 ? <count> : "").(<count> ? "split" : "edit"), <bang>0, "<mods>", <q-args>, [<f-args>])'
+exe 'command! -bar -bang -nargs=* -range=-1' s:addr_other '-complete=customlist,fugitive#ReadComplete   Gvsplit  exe fugitive#Open((<count> > 0 ? <count> : "").(<count> ? "vsplit" : "edit!"), <bang>0, "<mods>", <q-args>, [<f-args>])'
+exe 'command! -bar -bang -nargs=* -range=-1' s:addr_tabs  '-complete=customlist,fugitive#ReadComplete   Gtabedit exe fugitive#Open((<count> >= 0 ? <count> : "")."tabedit", <bang>0, "<mods>", <q-args>, [<f-args>])'
+
+if exists(':Gr') != 2
+  exe 'command! -bar -bang -nargs=* -range=-1                -complete=customlist,fugitive#ReadComplete   Gr     exe fugitive#ReadCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+endif
+exe 'command! -bar -bang -nargs=* -range=-1                -complete=customlist,fugitive#ReadComplete   Gread    exe fugitive#ReadCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+
+exe 'command! -bar -bang -nargs=* -complete=customlist,fugitive#EditComplete Gdiffsplit  exe fugitive#Diffsplit(1, <bang>0, "<mods>", <q-args>, [<f-args>])'
+exe 'command! -bar -bang -nargs=* -complete=customlist,fugitive#EditComplete Ghdiffsplit exe fugitive#Diffsplit(0, <bang>0, "<mods>", <q-args>, [<f-args>])'
+exe 'command! -bar -bang -nargs=* -complete=customlist,fugitive#EditComplete Gvdiffsplit exe fugitive#Diffsplit(0, <bang>0, "vertical <mods>", <q-args>, [<f-args>])'
+
+exe 'command! -bar -bang -nargs=* -complete=customlist,fugitive#EditComplete Gw     exe fugitive#WriteCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+exe 'command! -bar -bang -nargs=* -complete=customlist,fugitive#EditComplete Gwrite exe fugitive#WriteCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+exe 'command! -bar -bang -nargs=* -complete=customlist,fugitive#EditComplete Gwq    exe fugitive#WqCommand(   <line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+
+exe 'command! -bar -bang -nargs=0 GRemove exe fugitive#RemoveCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+exe 'command! -bar -bang -nargs=0 GDelete exe fugitive#DeleteCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+exe 'command! -bar -bang -nargs=1 -complete=customlist,fugitive#CompleteObject GMove   exe fugitive#MoveCommand(  <line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+exe 'command! -bar -bang -nargs=1 -complete=customlist,fugitive#RenameComplete GRename exe fugitive#RenameCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+if exists(':Gremove') != 2 && get(g:, 'fugitive_legacy_commands', 1)
+  exe 'command! -bar -bang -nargs=0 Gremove exe fugitive#RemoveCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+        \ '|echohl WarningMSG|echomsg ":Gremove is deprecated in favor of :GRemove"|echohl NONE'
+endif
+if exists(':Gdelete') != 2 && get(g:, 'fugitive_legacy_commands', 1)
+  exe 'command! -bar -bang -nargs=0 Gdelete exe fugitive#DeleteCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+        \ '|echohl WarningMSG|echomsg ":Gdelete is deprecated in favor of :GDelete"|echohl NONE'
+endif
+if exists(':Gmove') != 2 && get(g:, 'fugitive_legacy_commands', 1)
+  exe 'command! -bar -bang -nargs=1 -complete=customlist,fugitive#CompleteObject Gmove   exe fugitive#MoveCommand(  <line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+        \ '|echohl WarningMSG|echomsg ":Gmove is deprecated in favor of :GMove"|echohl NONE'
+endif
+if exists(':Grename') != 2 && get(g:, 'fugitive_legacy_commands', 1)
+  exe 'command! -bar -bang -nargs=1 -complete=customlist,fugitive#RenameComplete Grename exe fugitive#RenameCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+        \ '|echohl WarningMSG|echomsg ":Grename is deprecated in favor of :GRename"|echohl NONE'
+endif
+
+exe 'command! -bar -bang -range=-1 -nargs=* -complete=customlist,fugitive#CompleteObject GBrowse exe fugitive#BrowseCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+if exists(':Gbrowse') != 2 && get(g:, 'fugitive_legacy_commands', 1)
+  exe 'command! -bar -bang -range=-1 -nargs=* -complete=customlist,fugitive#CompleteObject Gbrowse exe fugitive#BrowseCommand(<line1>, <count>, +"<range>", <bang>0, "<mods>", <q-args>, [<f-args>])'
+        \ '|if <bang>1|redraw!|endif|echohl WarningMSG|echomsg ":Gbrowse is deprecated in favor of :GBrowse"|echohl NONE'
+endif
+
+if v:version < 704
+  finish
+endif
+
+let g:io_fugitive = {
+      \ 'simplify': function('fugitive#simplify'),
+      \ 'resolve': function('fugitive#resolve'),
+      \ 'getftime': function('fugitive#getftime'),
+      \ 'getfsize': function('fugitive#getfsize'),
+      \ 'getftype': function('fugitive#getftype'),
+      \ 'filereadable': function('fugitive#filereadable'),
+      \ 'filewritable': function('fugitive#filewritable'),
+      \ 'isdirectory': function('fugitive#isdirectory'),
+      \ 'getfperm': function('fugitive#getfperm'),
+      \ 'setfperm': function('fugitive#setfperm'),
+      \ 'readfile': function('fugitive#readfile'),
+      \ 'writefile': function('fugitive#writefile'),
+      \ 'glob': function('fugitive#glob'),
+      \ 'delete': function('fugitive#delete'),
+      \ 'Real': function('FugitiveReal')}
 
 augroup fugitive
   autocmd!
 
-  autocmd BufNewFile,BufReadPost * call FugitiveDetect(expand('%:p'))
-  autocmd FileType           netrw call FugitiveDetect(fnamemodify(get(b:, 'netrw_curdir', @%), ':p'))
-  autocmd User NERDTreeInit,NERDTreeNewRoot
-        \ if exists('b:NERDTree.root.path.str') |
-        \   call FugitiveDetect(b:NERDTree.root.path.str()) |
-        \ endif
-  autocmd VimEnter * if expand('<amatch>')==''|call FugitiveDetect(getcwd())|endif
-  autocmd CmdWinEnter * call FugitiveDetect(expand('#:p'))
+  autocmd BufNewFile,BufReadPost * call FugitiveDetect(expand('<amatch>:p'))
+  autocmd FileType           netrw call FugitiveDetect(fnamemodify(get(b:, 'netrw_curdir', expand('<amatch>')), ':p'))
 
   autocmd FileType git
-        \ if exists('b:git_dir') |
-        \  call fugitive#MapJumps() |
-        \ endif
-  autocmd FileType git,gitcommit,gitrebase
-        \ if exists('b:git_dir') |
-        \   call fugitive#MapCfile() |
+        \ call fugitive#MapCfile()
+  autocmd FileType gitcommit
+        \ call fugitive#MapCfile('fugitive#MessageCfile()')
+  autocmd FileType git,gitcommit
+        \ if &foldtext ==# 'foldtext()' |
+        \    setlocal foldtext=fugitive#Foldtext() |
         \ endif
+  autocmd FileType fugitive
+        \ call fugitive#MapCfile('fugitive#StatusCfile()')
+  autocmd FileType gitrebase
+        \ let &l:include = '^\%(pick\|squash\|edit\|reword\|fixup\|drop\|[pserfd]\)\>' |
+        \ if &l:includeexpr !~# 'Fugitive' |
+        \   let &l:includeexpr = 'v:fname =~# ''^\x\{4,\}$'' && len(FugitiveGitDir()) ? FugitiveFind(v:fname) : ' .
+        \     (len(&l:includeexpr) ? &l:includeexpr : 'v:fname') |
+        \ endif |
+        \ let b:undo_ftplugin = get(b:, 'undo_ftplugin', 'exe') . '|setl inex= inc='
 
-  autocmd BufReadCmd  index{,.lock}
+  autocmd BufReadCmd index{,.lock}
         \ if FugitiveIsGitDir(expand('<amatch>:p:h')) |
+        \   let b:git_dir = s:Slash(expand('<amatch>:p:h')) |
         \   exe fugitive#BufReadStatus() |
         \ elseif filereadable(expand('<amatch>')) |
-        \   read <amatch> |
-        \   1delete |
+        \   silent doautocmd BufReadPre |
+        \   keepalt read <amatch> |
+        \   1delete_ |
+        \   silent doautocmd BufReadPost |
+        \ else |
+        \   silent doautocmd BufNewFile |
         \ endif
-  autocmd FileReadCmd fugitive://**//[0-3]/**          exe fugitive#FileRead()
-  autocmd BufReadCmd  fugitive://**//[0-3]/**          exe fugitive#BufReadIndex()
-  autocmd BufWriteCmd fugitive://**//[0-3]/**          exe fugitive#BufWriteIndex()
-  autocmd BufReadCmd  fugitive://**//[0-9a-f][0-9a-f]* exe fugitive#BufReadObject()
-  autocmd FileReadCmd fugitive://**//[0-9a-f][0-9a-f]* exe fugitive#FileRead()
+
+  autocmd BufReadCmd    fugitive://*//*             exe fugitive#BufReadCmd() |
+        \ if &path =~# '^\.\%(,\|$\)' |
+        \   let &l:path = substitute(&path, '^\.,\=', '', '') |
+        \ endif
+  autocmd BufWriteCmd   fugitive://*//[0-3]/*       exe fugitive#BufWriteCmd()
+  autocmd FileReadCmd   fugitive://*//*             exe fugitive#FileReadCmd()
+  autocmd FileWriteCmd  fugitive://*//[0-3]/*       exe fugitive#FileWriteCmd()
+  if exists('##SourceCmd')
+    autocmd SourceCmd     fugitive://*//*    nested exe fugitive#SourceCmd()
+  endif
 
   autocmd User Flags call Hoist('buffer', function('FugitiveStatusline'))
+
+  autocmd User ProjectionistDetect call s:ProjectionistDetect()
 augroup END
+
+if get(g:, 'fugitive_no_maps')
+  finish
+endif
+
+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' s:nowait flags head.tail a:rhs
+    endif
+  endfor
+endfunction
+
+call s:Map('c', '<C-R><C-G>', 'fnameescape(fugitive#Object(@%))', '<expr>')
+call s:Map('n', 'y<C-G>', ':<C-U>call setreg(v:register, fugitive#Object(@%))<CR>', '<silent>')

syntax/fugitive.vim

@@ -0,0 +1,57 @@
+if exists("b:current_syntax")
+  finish
+endif
+
+syn sync fromstart
+syn spell notoplevel
+
+syn include @fugitiveDiff syntax/diff.vim
+
+syn match fugitiveHeader /^[A-Z][a-z][^:]*:/
+syn match fugitiveHeader /^Head:/ nextgroup=fugitiveHash,fugitiveSymbolicRef skipwhite
+syn match fugitiveHeader /^Pull:\|^Rebase:\|^Merge:\|^Push:/ nextgroup=fugitiveSymbolicRef skipwhite
+syn match fugitiveHelpHeader /^Help:/ nextgroup=fugitiveHelpTag skipwhite
+syn match fugitiveHelpTag    /\S\+/ contained
+
+syn region fugitiveSection start=/^\%(.*(\d\+)$\)\@=/ contains=fugitiveHeading end=/^$/
+syn cluster fugitiveSection contains=fugitiveSection
+syn match fugitiveHeading /^[A-Z][a-z][^:]*\ze (\d\+)$/ contains=fugitivePreposition contained nextgroup=fugitiveCount skipwhite
+syn match fugitiveCount /(\d\+)/hs=s+1,he=e-1 contained
+syn match fugitivePreposition /\<\%([io]nto\|from\|to\|Rebasing\%( detached\)\=\)\>/ transparent contained nextgroup=fugitiveHash,fugitiveSymbolicRef skipwhite
+
+syn match fugitiveInstruction /^\l\l\+\>/ contained containedin=@fugitiveSection nextgroup=fugitiveHash skipwhite
+syn match fugitiveDone /^done\>/ contained containedin=@fugitiveSection nextgroup=fugitiveHash skipwhite
+syn match fugitiveStop /^stop\>/ contained containedin=@fugitiveSection nextgroup=fugitiveHash skipwhite
+syn match fugitiveModifier /^[MADRCU?]\{1,2} / contained containedin=@fugitiveSection
+syn match fugitiveSymbolicRef /\.\@!\%(\.\.\@!\|[^[:space:][:cntrl:]\:.]\)\+\.\@<!/ contained
+syn match fugitiveHash /^\x\{4,\}\S\@!/ contained containedin=@fugitiveSection
+syn match fugitiveHash /\S\@<!\x\{4,\}\S\@!/ contained
+
+syn region fugitiveHunk start=/^\%(@@\+ -\)\@=/ end=/^\%([A-Za-z?@]\|$\)\@=/ contains=diffLine,diffRemoved,diffAdded,diffNoEOL containedin=@fugitiveSection fold
+
+for s:section in ['Untracked', 'Unstaged', 'Staged']
+  exe 'syn region fugitive' . s:section . 'Section start=/^\%(' . s:section . ' .*(\d\+)$\)\@=/ contains=fugitive' . s:section . 'Heading end=/^$/'
+  exe 'syn match fugitive' . s:section . 'Modifier /^[MADRCU?] / contained containedin=fugitive' . s:section . 'Section'
+  exe 'syn cluster fugitiveSection add=fugitive' . s:section . 'Section'
+  exe 'syn match fugitive' . s:section . 'Heading /^[A-Z][a-z][^:]*\ze (\d\+)$/ contains=fugitivePreposition contained nextgroup=fugitiveCount skipwhite'
+endfor
+unlet s:section
+
+hi def link fugitiveHelpHeader fugitiveHeader
+hi def link fugitiveHeader Label
+hi def link fugitiveHelpTag Tag
+hi def link fugitiveHeading PreProc
+hi def link fugitiveUntrackedHeading PreCondit
+hi def link fugitiveUnstagedHeading Macro
+hi def link fugitiveStagedHeading Include
+hi def link fugitiveModifier Type
+hi def link fugitiveUntrackedModifier StorageClass
+hi def link fugitiveUnstagedModifier Structure
+hi def link fugitiveStagedModifier Typedef
+hi def link fugitiveInstruction Type
+hi def link fugitiveStop Function
+hi def link fugitiveHash Identifier
+hi def link fugitiveSymbolicRef Function
+hi def link fugitiveCount Number
+
+let b:current_syntax = "fugitive"

syntax/fugitiveblame.vim

@@ -0,0 +1,7 @@
+if exists("b:current_syntax") || !exists("*FugitiveGitDir")
+  finish
+endif
+
+call fugitive#BlameSyntax()
+
+let b:current_syntax = "fugitiveblame"