From f7d193010900dd6fbb3c88b5863f18050f891c40 Mon Sep 17 00:00:00 2001
From: Greg Hurrell <greg@hurrell.net>
Date: Fri, 5 Oct 2018 20:28:24 +0200
Subject: [PATCH] Check for buffer variable existence before accessing

Closes: https://github.com/Yggdroot/indentLine/issues/252
---
 after/plugin/indentLine.vim | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/after/plugin/indentLine.vim b/after/plugin/indentLine.vim
index 8e6493c..4ae3fd3 100644
--- a/after/plugin/indentLine.vim
+++ b/after/plugin/indentLine.vim
@@ -107,8 +107,12 @@ endfunction
 
 function! s:ResetConcealOption()
     if exists("b:indentLine_ConcealOptionSet") && b:indentLine_ConcealOptionSet
-        let &l:concealcursor = b:indentLine_original_concealcursor
-        let &l:conceallevel = b:indentLine_original_conceallevel
+        if exists("b:indentLine_original_concealcursor")
+            let &l:concealcursor = b:indentLine_original_concealcursor
+        endif
+        if exists("b:indentLine_original_conceallevel")
+            let &l:conceallevel = b:indentLine_original_conceallevel
+        endif
         let b:indentLine_ConcealOptionSet = 0
     endif
 endfunction