guarantee valid html comments

1 files changed, 9 insertions, 1 deletions

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)
 {