From 5de25ec5c1b306eaebd77a76dde9505827c19604 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 7 Apr 2014 14:36:40 +0530
Subject: [PATCH] Edit Book: Fix book being marked as modified even when no
 actual changes were done by various automated tools such as Smarten
 Punctuation, Subset Fonts, etc.

---
 src/calibre/gui2/tweak_book/boss.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/calibre/gui2/tweak_book/boss.py b/src/calibre/gui2/tweak_book/boss.py
index 67c985b6fd..fc3f1cb08c 100644
--- a/src/calibre/gui2/tweak_book/boss.py
+++ b/src/calibre/gui2/tweak_book/boss.py
@@ -403,7 +403,8 @@ class Boss(QObject):
             except:
                 self.rewind_savepoint()
                 raise
-            self.apply_container_update_to_gui()
+            if changed:
+                self.apply_container_update_to_gui()
             from calibre.ebooks.markdown import markdown
             report = markdown('# %s\n\n'%self.current_metadata.title + '\n\n'.join(report), output_format='html4')
         if not changed: