--- a/Plugins/VcsPlugins/vcsMercurial/HgDiffDialog.py	Tue Apr 29 18:22:44 2014 +0200
+++ b/Plugins/VcsPlugins/vcsMercurial/HgDiffDialog.py	Wed Apr 30 18:33:53 2014 +0200
@@ -433,7 +433,7 @@
         
         eol = e5App().getObject("Project").getEolString()
         try:
-            f = open(fname, "w", encoding="utf-8")
+            f = open(fname, "w", encoding="utf-8", newline="")
             f.write(eol.join(self.contents.toPlainText().splitlines()))
             f.close()
         except IOError as why: