From 8589246545e995206331f63adc6d09b7659dc13d Mon Sep 17 00:00:00 2001
From: Tim Pope <code@tpope.net>
Date: Sat, 18 Aug 2018 23:14:54 -0400
Subject: [PATCH] Tweak check for Win32 shell

References https://github.com/tpope/vim-fugitive/issues/1079
---
 autoload/fugitive.vim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/autoload/fugitive.vim b/autoload/fugitive.vim
index 16b562d..bf80df6 100644
--- a/autoload/fugitive.vim
+++ b/autoload/fugitive.vim
@@ -40,7 +40,7 @@ function! s:Uniq(list) abort
 endfunction
 
 function! s:winshell() abort
-  return &shell =~? 'cmd' || exists('+shellslash') && !&shellslash
+  return exists('+shellslash') && !&shellslash && &shellcmdflag !~# '^-'
 endfunction
 
 function! s:shellesc(arg) abort