if attribute value is None do not try to

call regex with.
[...]
 <p kind_of_attribute />
[...]


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@33467 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/PortalTransforms/transforms/safe_html.py

@@ -130,6 +130,8 @@ class StrippingParser(HTMLParser):
                 if remove_script and k.strip().lower().startswith('on'):
                     if not self.raise_error: continue
                     else: raise IllegalHTML, 'Script event "%s" not allowed.' % k
+                elif v is None:
+                  self.result.append(' %s' % (k,))
                 elif remove_script and hasScript(v):
                     if not self.raise_error: continue
                     else: raise IllegalHTML, 'Script URI "%s" not allowed.' % v