[Bug #1472827] Make saxutils.XMLGenerator handle \r\n\t in attribute values by escaping them properly. 2.4 bugfix candidate.

Lib/xmlcore/sax/saxutils.py

@@ -68,6 +68,8 @@ def quoteattr(data, entities={}):
     the optional entities parameter.  The keys and values must all be
     strings; each key will be replaced with its corresponding value.
     """
+    entities = entities.copy()
+    entities.update({'\n': '
', '\r': '
', '\t':'	'})
     data = escape(data, entities)
     if '"' in data:
         if "'" in data: