Fix race conditions generating sequencer sections

Resolves: https://github.com/tpope/vim-fugitive/issues/2411

.gitattributes

@@ -0,0 +1,2 @@
+.git* export-ignore
+*.markdown export-ignore

.github/FUNDING.yml

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

CONTRIBUTING.markdown

@@ -8,8 +8,14 @@ platform issues, and interactions with other plugins.  I end up bisecting a
 lot more than other projects, and thus I'm especially meticulous here about
 maintaining a clean, readable, history.  Squash and force push any requested
 changes to a pull request.  And if your [commit message
-sucks](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html),
-I'm not going to accept it.  Period.
+sucks](https://commit.style), I'm not going to accept it.  Period.
+
+If your contribution involves adding a configuration option, you are going to
+need a very compelling justification for it.  Options add a maintenance
+burden, support burden, and documentation bloat, and oftentimes can be
+achieved much more simply with a custom map or autocommand.  If your option
+controls an underlying Git command, ask yourself why Git itself does not offer
+such configuration.
 
 Beyond that, don't be shy about asking before patching.  What takes you hours
 might take me minutes simply because I have both domain knowledge and a

README.markdown

@@ -1,49 +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.  `:Gremove` does a `git rm` on a file and simultaneously deletes
-the buffer.
+* 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].
 
-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!
+[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
 
-`: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.
+Add `%{FugitiveStatusline()}` to `'statusline'` to get an indicator
+with the current branch in your statusline.
 
-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.
-
-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
 
@@ -55,55 +86,41 @@ and `Git!` to open the output of a command in a temp file.
 
 ## Installation
 
-If you don't have a preferred installation method, I recommend
-installing [pathogen.vim](https://github.com/tpope/vim-pathogen), and
-then simply copy and paste:
+Install using your favorite package manager, or use Vim's built-in package
+support:
 
-    cd ~/.vim/bundle
-    git clone git://github.com/tpope/vim-fugitive.git
-
-Once help tags have been generated, you can view the manual with
-`:help fugitive`.
-
-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
 
-> I installed the plugin and started Vim.  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.
+This behavior was divisive, confusing, and complicated inputting passwords, so
+it was removed.  Use `:Git! push` to use Fugitive's own asynchronous
+execution, or retroactively make `:Git push` asynchronous by pressing
+`CTRL-D`.
 
-> I opened a new tab.  Why don't any of the commands exist?
+> Why am I getting `core.worktree is required when using an external Git dir`?
 
-Fugitive cares about the current file, not the current working
-directory.  Edit a file from the repository.
+Git generally sets `core.worktree` for you automatically when necessary, but
+if you're doing something weird, or using a third-party tool that does
+something weird, you may need to set it manually:
 
-> Why is `:Gbrowse` not using the right browser?
+    git config core.worktree "$PWD"
 
-`:Gbrowse` delegates to `git web--browse`, which is less than perfect
-when it comes to finding the right browser.  You can tell it the correct
-browser to use with `git config --global web.browser ...`.  On OS X, for
-example, you might want to set this to `open`.  See `git web--browse --help`
-for details.
+This may be necessary even when simple `git` commands seem to work fine
+without it.
 
-> Here's a patch that automatically opens the quickfix window after
-> `:Ggrep`.
+> So I have a symlink and...
 
-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`.
-
-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

@@ -15,115 +15,169 @@ 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.
+                                                *fugitive-:G*
+:G [args]               Same as :Git, but two characters shorter.
 
-                                                *fugitive-:Git!*
-:Git! [args]            Like |:Git|, but capture the output into a temp file,
-                        and edit that temp file.
+                                                *fugitive-summary*
+:Git                    With no arguments, bring up a summary window vaguely
+                        akin to git-status.  If a summary window is already
+                        open for the current repository, it is focused
+                        instead.  Press g?  or see |fugitive-maps| for usage.
 
-                                                *fugitive-:Gcd*
-:Gcd [directory]        |:cd| relative to the repository.
+                                                *:Git*
+:Git {args}             Run an arbitrary git command and display any output.
+                        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-:Glcd*
-:Glcd [directory]       |:lcd| relative to the repository.
+                                                *:Git!*
+:Git! {args}            Run an arbitrary git command in the background and
+                        stream the output to the preview window.  Requires a
+                        Vim with |setbufline()|.  Press CTRL-D during an
+                        interactive :Git invocation to switch to this mode
+                        retroactively.
 
-                                                *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_--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.  Pass ++curwin as
+                        the first argument to |:edit| the temp file instead.
+                        A temp file is always used for commands like diff and
+                        log that typically uses a pager, and for any command
+                        that has the pager.<cmd> Git configuration option set.
+
+:{range}Git! --paginate {args}
+:{range}Git! -p {args}  Run an arbitrary git command, and insert the output
+                        after {range} in the current buffer.
+
+                                                *: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)
-                        cA    |:Gcommit| --amend --reuse-message=HEAD
-                        ca    |:Gcommit| --amend
-                        cc    |:Gcommit|
-                        cva   |:Gcommit| --amend --verbose
-                        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|
+                        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
 
-                                                *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.  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 muck with the index with commands like
-                        git-add and git-reset while a commit message is
-                        pending.
+                        The maps |fugitive_P| and |fugitive_~| are also
+                        supported to reblame on a parent commit, but this is
+                        inherently fragile, as the line being blamed will no
+                        longer exist.  The preferred alternative is to use
+                        <CR> to open up the commit, select the corresponding
+                        `-` line that you care about, and press <CR> twice
+                        more to reblame at that line.  Viewing the commit also
+                        gives you additional context as to why the line
+                        changed.
 
-                                                *fugitive-:Ggrep*
-:Ggrep [args]           |:grep| with git-grep as 'grepprg'.
+                                                *g:fugitive_dynamic_colors*
+                        In the GUI or a 256 color terminal, commit hashes will
+                        be 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-:Glgrep*
-:Glgrep [args]          |:lgrep| with git-grep as 'grepprg'.
+                                                *: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-: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.
+:Git difftool -y [args] Invoke `git diff [args]`, open each changed file in a
+                        new tab, and invoke |:Gdiffsplit!| against the
+                        appropriate commit.
 
-                                                *fugitive-:Gllog*
-:Gllog [args]           Like |:Glog|, but use the location list instead of the
-                        quickfix list.
+                                                *:Git_mergetool*
+:Git mergetool [args]   Like |:Git_difftool|, but target merge conflicts.
 
-                                        *fugitive-:Gedit* *fugitive-:Ge*
-:Gedit [revision]       |:edit| a |fugitive-revision|.
+Wrappers for Vim built-ins ~
 
-                                                *fugitive-:Gsplit*
-:Gsplit [revision]      |:split| a |fugitive-revision|.
+These all directly map onto a built-in Vim command, and generally have names
+that prepend "G" to the command they are wrapping.  For example, :Ggrep is G
+plus |:grep|.
 
-                                                *fugitive-:Gvsplit*
-:Gvsplit [revision]     |:vsplit| a |fugitive-revision|.
+                                                *:Ggrep* *:Git_grep*
+:Ggrep[!] [args]        An approximation of |:grep|[!] with git-grep as
+:Git[!] grep -O [args]  'grepprg'.
 
-                                                *fugitive-:Gtabedit*
-:Gtabedit [revision]    |:tabedit| a |fugitive-revision|.
+:Ggrep[!] --quiet [args]
+:Ggrep[!] -q [args]     Like |:Ggrep|, but instead of displaying output, open
+                        the quickfix list.
 
-                                                *fugitive-:Gpedit*
-:Gpedit [revision]      |:pedit| a |fugitive-revision|.
+                                                *:Glgrep*
+:Glgrep[!] [args]       :Ggrep but for |:lgrep|.
+:0Git[!] grep -O [args]
 
-: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.
+                                                 *:Gclog*
+:Gclog[!] [args]        Use git-log [args] to load the commit history into the
+                        |quickfix| list.  Jumps to the first commit unless [!]
+                        is given.  This command wraps |:cfile|.
 
-                                                *fugitive-:Gread*
-:Gread [revision]       Empty the buffer and |:read| a |fugitive-revision|.
+                        The quickfix list can be awkward for many use cases
+                        and exhibits extremely poor performance with larger
+                        data sets.  Consider using |:Git| log --oneline
+                        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.  Use :0Gclog to
+                        target the entire file.
+
+                                                *:Gllog*
+:Gllog [args]           Like |:Gclog|, but use the location list instead of the
+                        |quickfix| list.
+
+                                                *:Gcd*
+:Gcd [directory]        |:cd| relative to the repository.
+
+                                                *:Glcd*
+:Glcd [directory]       |:lcd| relative to the repository.
+
+                                                *:Gedit* *fugitive-:Ge*
+:Gedit [object]         |:edit| a |fugitive-object|.
+
+                                                *:Gsplit*
+:Gsplit [object]        |:split| a |fugitive-object|.
+
+                                                *:Gvsplit*
+:Gvsplit [object]       |:vsplit| a |fugitive-object|.
+
+                                                *:Gtabedit*
+:Gtabedit [object]      |:tabedit| a |fugitive-object|.
+
+                                                *:Gpedit*
+:Gpedit [object]        |:pedit| a |fugitive-object|.
+
+                                                *:Gdrop*
+:Gdrop [object]         |:drop| 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! [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}.
-
-                                        *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
@@ -133,188 +187,561 @@ 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".
+                                                *: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, and the work tree version is always
+                        placed to the right or bottom, depending on available
+                        width.  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.  Add a ! to pass -f.
+                                                *:Gvdiffsplit*
+:Gvdiffsplit [object]   Like |:Gdiffsplit|, but always split vertically.
 
-                                                *fugitive-:Gremove*
-:Gremove                Wrapper around git-rm that deletes the buffer
+                                                *:Ghdiffsplit*
+:Gdiffsplit ++novertical [object]
+:Ghdiffsplit [object]   Like |:Gdiffsplit|, but with "vertical" removed from
+                        'diffopt'.  The split will still be vertical if
+                        combined with |:vertical|.
+
+Other commands ~
+
+These do not directly correspond to any built-in Vim command, and have a
+capital letter after the "G" to convey this. For example, the file move
+operation has nothing to do with the |:move| built-in, so it is named :GMove,
+not :Gmove.
+
+                                                *: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.
+
+                                                *: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-: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:
+                                                *:GRemove* *:GUnlink*
+:GRemove                Like |:GDelete|, but keep the (now empty) buffer around.
+:GUnlink
 
-                        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])
+                                                *:GBrowse*
+:GBrowse                Open the current file, blob, tree, commit, or tag
+                        in your browser at the upstream hosting provider.
+                        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>.
 
-:[range]Gblame [flags]  Run git-blame on the given range.
+:GBrowse {object}       Like :GBrowse, but for a given |fugitive-object|.
 
-                                                *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 [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.
 
-                        To use with GitHub FI, point g:fugitive_github_domains
-                        at a list of domains:
->
-                        let g:fugitive_github_domains = ['https://example.com']
-~
-:[range]Gbrowse!        Like :Gbrowse, but put the URL on the clipboard rather
+:GBrowse [...]@{remote} Force using the given remote rather than the remote
+                        for the current branch.  The remote is used to
+                        determine which upstream repository to link to.
+
+:GBrowse {url}          Open an arbitrary URL in your browser.
+
+:[range]GBrowse! [args] 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.
+MAPS                                            *fugitive-maps*
 
-:[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.
+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.
 
-MAPPINGS                                        *fugitive-mappings*
+                                                *fugitive-staging-maps*
+Staging/unstaging maps ~
 
-These maps are available everywhere.
+                                                *fugitive_s*
+s                       Stage (add) the file or hunk under the cursor.
 
-                                                *fugitive-c_CTRL-R_CTRL-G*
+                                                *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 the currently focused diff buffer, and
+                        invoke |:diffoff|!.
+
+                                                *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.
+                        Experimental:  In the "Unpushed" section of the status
+                        buffer, this will populate the command line with a
+                        ":Git push" command for the commit under the cursor.
+
+                                                *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.
+
+cvc                     Create a commit with -v.
+
+ca                      Amend the last commit and edit the message.
+
+cva                     Amend the last commit with -v.
+
+ce                      Amend the last commit without editing the message.
+
+cw                      Reword the last commit.
+
+cW                      Create an `amend!` commit that rewords the commit
+                        under the cursor.
+
+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.
+
+cn                      Create a `squash!` commit for the commit under the
+(formerly cA)           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 the work-tree.  Like `czz` with
+                        `--keep-index`.
+
+czs                     Push stash of the stage.  Does not accept a count.
+
+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
-master          .git/refs/heads/master
-HEAD^{}         The commit referenced by HEAD
-HEAD^           The parent of the commit referenced by HEAD
-HEAD:           The tree referenced by HEAD
-/HEAD           The file named HEAD in the work tree
+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 working directory
+:(top)master    The file named master in the work tree
 Makefile        The file named Makefile in the work tree
-HEAD^:Makefile  The file named Makefile in the parent of HEAD
+@^: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*
 
-                                                *fugitive#statusline()*
-Add %{fugitive#statusline()} to your statusline to get an indicator including
+                                *FugitiveStatusline()* *fugitive#statusline()*
+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%{fugitive#statusline()}%=%-14.(%l,%c%V%)\ %P
+        set statusline=%<%f\ %h%m%r%{FugitiveStatusline()}%=%-14.(%l,%c%V%)\ %P
 <
-                                                *fugitive#head(...)*
-Use fugitive#head() to return the name of the current branch. If the current
-HEAD is detached, fugitive#head() 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,FugitiveStageBlob call s:BlobOverrides()
+<
+                                                *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 committed blob (file) object.
+
+                                                *User_FugitiveObject*
+FugitiveObject          After loading any of the 4 above buffer types.
+
+                                                *User_FugitiveStageBlob*
+FugitiveStageBlob       After loading a staged blob (file) object.  These
+                        buffers are 'modifiable' and oftentimes don't want the
+                        same behavior as the other buffer types.
+
+                                                *User_FugitiveIndex*
+FugitiveIndex           After loading the |fugitive-summary| buffer.
+
+                                                *User_FugitivePager*
+FugitivePager           After loading a temp file created by a command like
+                        :Git --paginate or :Git blame.
+
+                                                *User_FugitiveEditor*
+FugitiveEditor          After a :Git command (e.g., :Git commit) edits a file
+                        (e.g., the commit message).
+
+                                                *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).
+*: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 has been 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:

ftdetect/fugitive.vim

@@ -0,0 +1 @@
+autocmd BufReadPost *.fugitiveblame setfiletype fugitiveblame

ftplugin/fugitiveblame.vim

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

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=/^$/ fold
+syn cluster fugitiveSection contains=fugitiveSection
+syn match fugitiveHeading /^[A-Z][a-z][^:]*\ze (\d\++\=)$/ 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=/^$/ fold'
+  exe 'syn match fugitive' . s:section . 'Modifier /^[MADRCU?] / contained containedin=fugitive' . s:section . 'Section'
+  exe 'syn cluster fugitiveSection add=fugitive' . s:section . 'Section'
+  exe 'syn match fugitive' . s:section . 'Heading /^[A-Z][a-z][^:]*\ze (\d\++\=)$/ 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"