Split and join after by the same character, in order to keep the same

rendering.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@22970 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/EmailDocument.py

@@ -407,7 +407,7 @@ class EmailDocument(File, TextDocument):
       line = line.strip()
       if line:
         new_text_list.append(line)
-    clean_text = ''.join(new_text_list)
+    clean_text = '\n'.join(new_text_list)
     return clean_text
 
   security.declareProtected(Permissions.AccessContentsInformation, 'getReplySubject')