resolve #105

Parsedown.php

@@ -87,7 +87,7 @@ class Parsedown
         '8' => array('List'),
         '9' => array('List'),
         ':' => array('Table'),
-        '<' => array('Markup'),
+        '<' => array('Comment', 'Markup'),
         '=' => array('Setext'),
         '>' => array('Quote'),
         '_' => array('Rule'),
@@ -346,6 +346,43 @@ class Parsedown
         return $Block;
     }
 
+    #
+    # Comment
+
+    protected function identifyComment($Line)
+    {
+        if (isset($Line['text'][3]) and $Line['text'][3] === '-' and $Line['text'][2] === '-' and $Line['text'][1] === '!')
+        {
+            $Block = array(
+                'element' => $Line['body'],
+            );
+
+            if (preg_match('/-->$/', $Line['text']))
+            {
+                $Block['closed'] = true;
+            }
+
+            return $Block;
+        }
+    }
+
+    protected function addToComment($Line, array $Block)
+    {
+        if (isset($Block['closed']))
+        {
+            return;
+        }
+
+        $Block['element'] .= "\n" . $Line['body'];
+
+        if (preg_match('/-->$/', $Line['text']))
+        {
+            $Block['closed'] = true;
+        }
+
+        return $Block;
+    }
+
     #
     # Fenced Code
 
@@ -601,8 +638,7 @@ class Parsedown
             else
             {
                 $Block['depth'] = 0;
-                $Block['start'] = '<'.$matches[1].'>';
+                $Block['name'] = $matches[1];
-                $Block['end'] = '</'.$matches[1].'>';
             }
 
             return $Block;
@@ -616,12 +652,12 @@ class Parsedown
             return;
         }
 
-        if (stripos($Line['text'], $Block['start']) !== false) # opening tag
+        if (preg_match('/<'.$Block['name'].'([ ][^\/]+)?>/', $Line['text'])) # opening tag
         {
             $Block['depth'] ++;
         }
 
-        if (stripos($Line['text'], $Block['end']) !== false) # closing tag
+        if (stripos($Line['text'], '</'.$Block['name'].'>') !== false) # closing tag
         {
             if ($Block['depth'] > 0)
             {

test/data/HTML_Comment.html

@@ -0,0 +1,5 @@
+<!-- single line -->
+<p>paragraph</p>
+<!-- 
+  multiline -->
+<p>paragraph</p>

test/data/HTML_Comment.md

@@ -0,0 +1,8 @@
+<!-- single line -->
+
+paragraph
+
+<!-- 
+  multiline -->
+
+paragraph

test/data/block-level_html.html

@@ -1,5 +1,8 @@
 <div>_content_</div>
 <p>sparse:</p>
 <div>
+<div class="inner">
 _content_
 </div>
+</div>
+<p>paragraph</p>

test/data/block-level_html.md

@@ -3,5 +3,9 @@
 sparse:
 
 <div>
+<div class="inner">
 _content_
 </div>
+</div>
+
+paragraph