From 3ddc6eccdacd4099fbef098451ad378a7c9f8d92 Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Fri, 15 Jul 2016 20:26:58 +0100
Subject: [PATCH] Add sanity check

---
 src/highlighters.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/highlighters.cc b/src/highlighters.cc
index fd1a4567..e60427b4 100644
--- a/src/highlighters.cc
+++ b/src/highlighters.cc
@@ -1260,6 +1260,7 @@ public:
 
         auto last_begin = (begin == regions.begin()) ?
                              ByteCoord{0,0} : (begin-1)->end;
+        kak_assert(begin <= end);
         for (; begin != end; ++begin)
         {
             if (apply_default and last_begin < begin->begin)