From 48e612601bc19883ac6906583e2f0cb096dc1d0c Mon Sep 17 00:00:00 2001
From: Daniel Hahler <git@thequod.de>
Date: Sat, 6 Jul 2019 10:07:52 +0200
Subject: [PATCH] s:BuildShell: fix E706

This happens with old Vim versions (before 7.4.1546):

> Vim(let):E706: Variable type mismatch for: cmd

Ref: https://github.com/vim/vim/commit/f6f32c38b
---
 autoload/fugitive.vim | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/autoload/fugitive.vim b/autoload/fugitive.vim
index d8da6c5..c401212 100644
--- a/autoload/fugitive.vim
+++ b/autoload/fugitive.vim
@@ -342,8 +342,7 @@ function! s:BuildShell(dir, env, args) abort
   else
     let pre = 'cd ' . s:shellesc(tree) . (s:winshell() ? '& ' : '; ') . pre
   endif
-  let cmd = join(map(cmd, 's:shellesc(v:val)'))
-  return pre . g:fugitive_git_executable . ' ' . cmd
+  return pre . g:fugitive_git_executable . ' ' . join(map(cmd, 's:shellesc(v:val)'))
 endfunction
 
 function! fugitive#Prepare(...) abort