From 32197bd77d079ca77b42340e3c2da6812c9cc174 Mon Sep 17 00:00:00 2001
From: Hakim El Hattab <hakim.elhattab@gmail.com>
Date: Wed, 10 Apr 2019 10:09:41 +0200
Subject: [PATCH] fix numeric presence condition

---
 plugin/highlight/highlight.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugin/highlight/highlight.js b/plugin/highlight/highlight.js
index 9dacd6f0..e50676f6 100644
--- a/plugin/highlight/highlight.js
+++ b/plugin/highlight/highlight.js
@@ -141,7 +141,7 @@ c:[{cN:"comment",b:/\(\*/,e:/\*\)/},e.ASM,e.QSM,e.CNM,{b:/\{/,e:/\}/,i:/:/}]}});
 						block.parentNode.appendChild( fragmentBlock );
 						RevealHighlight.highlightLines( fragmentBlock );
 
-						if( fragmentIndex ) {
+						if( typeof fragmentIndex === 'number' ) {
 							fragmentBlock.setAttribute( 'data-fragment-index', fragmentIndex );
 							fragmentIndex += 1;
 						}