#4147: minidom's toprettyxml no longer adds whitespace to text nodes.

Patch by Dan Kenigsberg.

Lib/test/test_minidom.py

@@ -446,6 +446,13 @@ class MinidomTest(unittest.TestCase):
         dom.unlink()
         self.confirm(domstr == str.replace("\n", "\r\n"))
 
+    def test_toPrettyXML_perserves_content_of_text_node(self):
+        str = '<A>B</A>'
+        dom = parseString(str)
+        dom2 = parseString(dom.toprettyxml())
+        self.assertEqual(dom.childNodes[0].childNodes[0].toxml(),
+                         dom2.childNodes[0].childNodes[0].toxml())
+
     def testProcessingInstruction(self):
         dom = parseString('<e><?mypi \t\n data \t\n ?></e>')
         pi = dom.documentElement.firstChild

Lib/xml/dom/minidom.py

@@ -836,7 +836,9 @@ class Element(Node):
             _write_data(writer, attrs[a_name].value)
             writer.write("\"")
         if self.childNodes:
-            writer.write(">%s"%(newl))
+            writer.write(">")
+            if self.childNodes[0].nodeType != Node.TEXT_NODE:
+                writer.write(newl)
             for node in self.childNodes:
                 node.writexml(writer,indent+addindent,addindent,newl)
             writer.write("%s</%s>%s" % (indent,self.tagName,newl))
@@ -1061,7 +1063,7 @@ class Text(CharacterData):
         return newText
 
     def writexml(self, writer, indent="", addindent="", newl=""):
-        _write_data(writer, "%s%s%s"%(indent, self.data, newl))
+        _write_data(writer, self.data)
 
     # DOM Level 3 (WD 9 April 2002)
 

Misc/ACKS

@@ -468,6 +468,7 @@ Lou Kates
 Hiroaki Kawai
 Sebastien Keim
 Ryan Kelly
+Dan Kenigsberg
 Robert Kern
 Randall Kern
 Magnus Kessler

Misc/NEWS

@@ -36,6 +36,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #4147: minidom's toprettyxml no longer adds whitespace to text nodes.
+
 - Issue #13034: When decoding some SSL certificates, the subjectAltName
   extension could be unreported.