bugfix? to htmlfill.render with force_defaults=False

I learned that htmlfill.render ignores <option> elements entirely if
force_defaults is False.

Here is a (working but probably wrong) patch to fix it, as applied to trunk.

diff --git a/formencode/htmlfill.py b/formencode/htmlfill.py
index b725f00..deb85eb 100644
--- a/formencode/htmlfill.py
+++ b/formencode/htmlfill.py
@@ -490,6 +490,13 @@ class FillingParser(RewritingParser):
                    self.add_key(self.in_select)
                else:
                    self.del_attr(attrs, 'selected')
+            else:
+                value = self.defaults.get(self.in_select)
+                current = self.get_attr(attrs, 'value')
+                selected = self.get_attr(attrs, 'selected')
+                if selected is None and current is not None and value
is not None:
+                    if self.selected_multiple(value, current):
+                        self.set_attr(attrs, 'selected', 'selected')
        self.write_tag('option', attrs)
        self.skip_next = True


-- 
Jon

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