From e59d0037f1388c757e05ba6969f4541968ca2671 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 23 Dec 2010 11:25:08 -0700
Subject: [PATCH] Comments editor: Strip HTML comments from markup

---
 src/calibre/gui2/comments_editor.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/calibre/gui2/comments_editor.py b/src/calibre/gui2/comments_editor.py
index ddff830911..3886fd81f1 100644
--- a/src/calibre/gui2/comments_editor.py
+++ b/src/calibre/gui2/comments_editor.py
@@ -62,6 +62,8 @@ class EditorWidget(QWebView): # {{{
     def __init__(self, parent=None):
         QWebView.__init__(self, parent)
 
+        self.comments_pat = re.compile(r'<!--.*?-->', re.DOTALL)
+
         for wac, name, icon, text, checkable in [
                 ('ToggleBold', 'bold', 'format-text-bold', _('Bold'), True),
                 ('ToggleItalic', 'italic', 'format-text-italic', _('Italic'),
@@ -213,6 +215,7 @@ class EditorWidget(QWebView): # {{{
                 raw = unicode(self.page().mainFrame().toHtml())
                 raw = xml_to_unicode(raw, strip_encoding_pats=True,
                                     resolve_entities=True)[0]
+                raw = self.comments_pat.sub('', raw)
 
                 try:
                     root = html.fromstring(raw)