From 1c08bafec6dcf4a2bf306c26cf2a1b0044c01dda Mon Sep 17 00:00:00 2001
From: Markus Koller <markus-koller@gmx.ch>
Date: Thu, 4 Dec 2014 21:59:11 +0100
Subject: [PATCH] Check for empty $TMUX variable

In some situations, like when running vim with sudo, $TMUX exists() for some reason but is empty.
---
 plugin/bracketed-paste.vim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugin/bracketed-paste.vim b/plugin/bracketed-paste.vim
index bb4f0cd..733a2e1 100644
--- a/plugin/bracketed-paste.vim
+++ b/plugin/bracketed-paste.vim
@@ -9,7 +9,7 @@
 " Docs on mapping fast escape codes in vim
 " http://vim.wikia.com/wiki/Mapping_fast_keycodes_in_terminal_Vim
 function! WrapForTmux(s)
-  if !exists('$TMUX')
+  if empty('$TMUX')
     return a:s
   endif