From 49636e22e749749ab70b748e81ec3c21fd3aa29f Mon Sep 17 00:00:00 2001
From: Urban Müller
Date: Thu, 19 Feb 2015 16:27:08 +0100
Subject: guarantee valid html comments

---
 it_html.class | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/it_html.class b/it_html.class
index 2a93473..0f29bab 100644
--- a/it_html.class
+++ b/it_html.class
@@ -88,7 +88,7 @@ function it_html($p = array())
 		'use_it_state' => false,              # If true, generate code needed by state.js (aka 'history iframe')
 		'srclines' => $GLOBALS['debug_srclines'], # append stackdump to each tag
 	);
-	$this->p['notexported'] = trim($p['notexported'] . ',configure,sanitize', ',');
+	$this->p['notexported'] = trim($p['notexported'] . ',configure,sanitize,comment', ',');
 
 	# We know these doctypes. If you need something else, supply 'doctype' in p
 	$this->doctypes = array(
@@ -415,6 +415,14 @@ function select($tags, $options, $selected = null)
 	return $this->_tag("select", array($tags, $html));
 }
 
+/**
+ * Outputs string as correctly quoted HTML comment
+ */
+function comment($string)
+{
+	return "<!--" . it::replace('--' => "&#45;&#45;", $string) . "-->";
+}
+
 # internal: strip spans added by debug params
 function _strip_tags($html)
 {
-- 
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