From bf042610806a35c9a7fb2eb705734c7ef3be33d0 Mon Sep 17 00:00:00 2001
From: Tim Pope <code@tpope.net>
Date: Sat, 26 Dec 2015 14:54:35 -0500
Subject: [PATCH] Revert "Remove guard against index stage in :Gbrowse handler"

This reverts commit 14daf094d90fe713186881323d41190420bb6319.  My
assertion was wrong; commit will no longer be an index stage but it
still might be an empty string.
---
 plugin/fugitive.vim | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/plugin/fugitive.vim b/plugin/fugitive.vim
index 9ab22f6..0452956 100644
--- a/plugin/fugitive.vim
+++ b/plugin/fugitive.vim
@@ -2336,7 +2336,11 @@ function! s:github_url(opts, ...) abort
   elseif path =~# '^\.git\>'
     return root
   endif
-  let commit = a:opts.commit
+  if a:opts.commit =~# '^\d\=$'
+    let commit = a:opts.repo.rev_parse('HEAD')
+  else
+    let commit = a:opts.commit
+  endif
   if get(a:opts, 'type', '') ==# 'tree' || a:opts.path =~# '/$'
     let url = substitute(root . '/tree/' . commit . '/' . path, '/$', '', 'g')
   elseif get(a:opts, 'type', '') ==# 'blob' || a:opts.path =~# '[^/]$'