From ee463e8e7b5522dfa09154b77c9cc1918afeee23 Mon Sep 17 00:00:00 2001
From: Golmote <golmote@hotmail.com>
Date: Sat, 15 Aug 2015 17:25:47 +0200
Subject: [PATCH] Line-numbers: Abort if element is empty. Fixex #669

---
 plugins/line-numbers/prism-line-numbers.js     | 4 ++++
 plugins/line-numbers/prism-line-numbers.min.js | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/plugins/line-numbers/prism-line-numbers.js b/plugins/line-numbers/prism-line-numbers.js
index 5b01dceeae..b526da5222 100644
--- a/plugins/line-numbers/prism-line-numbers.js
+++ b/plugins/line-numbers/prism-line-numbers.js
@@ -1,4 +1,8 @@
 Prism.hooks.add('complete', function (env) {
+	if (!env.code) {
+		return;
+	}
+
 	// works only for <code> wrapped inside <pre> (not inline)
 	var pre = env.element.parentNode;
 	var clsReg = /\s*\bline-numbers\b\s*/;
diff --git a/plugins/line-numbers/prism-line-numbers.min.js b/plugins/line-numbers/prism-line-numbers.min.js
index 7c1c19ee42..12841b15da 100644
--- a/plugins/line-numbers/prism-line-numbers.min.js
+++ b/plugins/line-numbers/prism-line-numbers.min.js
@@ -1 +1 @@
-Prism.hooks.add("complete",function(e){var t=e.element.parentNode,s=/\s*\bline-numbers\b\s*/;if(t&&/pre/i.test(t.nodeName)&&(s.test(t.className)||s.test(e.element.className))&&!e.element.querySelector(".line-numbers-rows")){s.test(e.element.className)&&(e.element.className=e.element.className.replace(s,"")),s.test(t.className)||(t.className+=" line-numbers");var a,n=1+e.code.split("\n").length,l=new Array(n);l=l.join("<span></span>"),a=document.createElement("span"),a.className="line-numbers-rows",a.innerHTML=l,t.hasAttribute("data-start")&&(t.style.counterReset="linenumber "+(parseInt(t.getAttribute("data-start"),10)-1)),e.element.appendChild(a)}});
\ No newline at end of file
+Prism.hooks.add("complete",function(e){if(e.code){var t=e.element.parentNode,s=/\s*\bline-numbers\b\s*/;if(t&&/pre/i.test(t.nodeName)&&(s.test(t.className)||s.test(e.element.className))&&!e.element.querySelector(".line-numbers-rows")){s.test(e.element.className)&&(e.element.className=e.element.className.replace(s,"")),s.test(t.className)||(t.className+=" line-numbers");var a,n=1+e.code.split("\n").length,l=new Array(n);l=l.join("<span></span>"),a=document.createElement("span"),a.className="line-numbers-rows",a.innerHTML=l,t.hasAttribute("data-start")&&(t.style.counterReset="linenumber "+(parseInt(t.getAttribute("data-start"),10)-1)),e.element.appendChild(a)}}});
\ No newline at end of file