Ooh, we can do this!

mwparserfromhell/nodes/template.py

@@ -70,7 +70,7 @@ class Template(Node):
         name, value = parse_anything(name), parse_anything(value)
         surface_text = value.filter_text(recursive=False)
         for node in surface_text:
-            node.replace("|", "|")                                             # INSERT AS HTMLEntity INSTEAD OF RAW TEXT
+            value.replace(node, node.replace("|", "|"))
 
         if showkey is None:
             if any(["=" in node for node in surface_text]):
@@ -84,7 +84,7 @@ class Template(Node):
                     showkey = True
         elif not showkey:
             for node in surface_text:
-                node.replace("=", "|")                                         # INSERT AS HTMLEntity INSTEAD OF RAW TEXT
+                value.replace(node, node.replace("=", "|"))
 
         if self.has_param(name):
             self.remove_param(name, keep_field=True)

mwparserfromhell/nodes/text.py

@@ -34,6 +34,3 @@ class Text(Node):
     @property
     def value(self):
         return self._value
-
-    def replace(self, old, new, count):                                              # TODO
-        pass

mwparserfromhell/string_mixin.py

@@ -79,3 +79,6 @@ class StringMixIn(object):
         if isinstance(item, StringMixIn):
             return unicode(item) in unicode(self)
         return item in unicode(self)
+
+    def replace(self, old, new, count):
+        return unicode(self).replace(old, new, count)