Document transition to rhubarb.vim

doc/fugitive.txt

@@ -220,32 +220,38 @@ that are part of Git repositories).
 :[range]Gblame [flags]  Run git-blame on the given range.
 
                                                 *fugitive-:Gbrowse*
-:[range]Gbrowse         If the remote for the current branch is on GitHub,
-                        open the current file, blob, tree, commit, or tag
-                        (with git-web--browse) on GitHub.  Otherwise, open the
-                        current file, blob, tree, commit, or tag in
-                        git-instaweb (if you have issues, verify you can run
-                        "git instaweb" from a terminal).  If a range is given,
-                        it is appropriately appended to the URL as an anchor.
-
-                        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
-                        than opening it.
-
-:[range]Gbrowse {revision}
-                        Like :Gbrowse, but for a given |fugitive-revision|.  A
+:Gbrowse                Open the current file, blob, tree, commit, or tag
+                        in your browser at the upstream hosting provider
+                        indicated by the "origin" remote.  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>.  (Native
+                        support for GitHub is currently included, but that is
+                        slated to be removed.)
+
+                        If no upstream support is available, a local instance
+                        of git-instaweb will be started and used instead.
+
+:Gbrowse {revision}     Like :Gbrowse, but for a given |fugitive-revision|.  A
                         useful value here is -, which ties the URL to the
                         latest commit rather than a volatile branch.
 
-:[range]Gbrowse [...]@{remote}
-                        Force using the given remote rather than the remote
+: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.
 
+:{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.
+
+:[range]Gbrowse! [args] Like :Gbrowse, but put the URL on the clipboard rather
+                        than opening it.
+
 MAPPINGS                                        *fugitive-mappings*
 
 These maps are available everywhere.