Update vim-rhubarb.

sources_non_forked/vim-rhubarb/.gitattributes

@@ -0,0 +1,3 @@
+.git* export-ignore
+*.markdown export-ignore
+*.md export-ignore

sources_non_forked/vim-rhubarb/.github/FUNDING.yml

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+github: tpope
+custom: ["https://www.paypal.me/vimpope"]

sources_non_forked/vim-rhubarb/.gitignore

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+/doc/tags

sources_non_forked/vim-rhubarb/CONTRIBUTING.markdown

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+See the [contribution guidelines for fugitive.vim](https://github.com/tpope/vim-fugitive/blob/master/CONTRIBUTING.markdown).

sources_non_forked/vim-rhubarb/README.markdown

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+# rhubarb.vim
+
+If [fugitive.vim][] is the Git, rhubarb.vim is the Hub.  Here's the full list
+of features:
+
+* Enables `:GBrowse` from fugitive.vim to open GitHub URLs.
+
+* In commit messages, GitHub issues, issue URLs, and collaborators can be
+  omni-completed (`<C-X><C-O>`, see `:help compl-omni`).  This makes inserting
+  those `Closes #123` remarks slightly easier than copying and pasting from
+  the browser.
+
+[fugitive.vim]: https://github.com/tpope/vim-fugitive
+
+## 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:
+
+    cd ~/.vim/bundle
+    git clone https://github.com/tpope/vim-rhubarb.git
+    vim -u NONE -c "helptags vim-rhubarb/doc" -c q
+
+You'll also need [fugitive.vim][].
+
+[Curl](http://curl.haxx.se/) (included with macOS) is required for features
+that use the GitHub API (i.e., `:GBrowse` doesn't need it).
+[Generate a personal access token](https://github.com/settings/tokens/new)
+with repo permissions and add it to your `.netrc`:
+
+    echo 'machine api.github.com login <user> password <token>' >> ~/.netrc
+
+If you are using GitHub Enterprise, repeat this step for each domain (omit the
+`api.` portion). You'll also need to tell Rhubarb the root URLs:
+
+    let g:github_enterprise_urls = ['https://example.com']
+
+## FAQ
+
+> How do I turn off that preview window that shows the issue body?
+
+    set completeopt-=preview
+
+> What happened to the support for [`hub`](https://github.com/github/hub)?
+
+Support was dropped partially because [GitHub CLI](https://github.com/cli/cli)
+appears to be unseating it as the preferred GitHub command line solution, and
+partially because `hub` isn't quite a perfect drop-in replacement for `git`,
+making life more difficult for Fugitive.  My recommended solution is to call
+it via a Git alias:
+
+    git config --global alias.hub '!hub'
+
+This will let you call `hub pull-request` via `:Git hub pull-request`, for
+example.
+
+## Self-Promotion
+
+Like rhubarb.vim? Follow the repository on
+[GitHub](https://github.com/tpope/vim-rhubarb).  And if
+you're feeling especially charitable, follow [tpope](http://tpo.pe/) on
+[Twitter](http://twitter.com/tpope) and
+[GitHub](https://github.com/tpope).

sources_non_forked/vim-rhubarb/autoload/rhubarb.vim

@@ -301,8 +301,6 @@ function! rhubarb#FugitiveUrl(...) abort
     return root . '/releases/tag/' . path[15:-1]
   elseif path =~# '^\.git/refs/remotes/[^/]\+/.'
     return root . '/commits/' . matchstr(path,'remotes/[^/]\+/\zs.*')
-  elseif path =~# '^\.git/\%(config$\|hooks\>\)'
-    return root . '/admin'
   elseif path =~# '^\.git\>'
     return root
   endif