[XML-SIG] Using character entities in external DTD without validating.

[Lars Marius Garshol]

* Martin v. Loewis
| 
| With some efforts, you might manage to talk xmlproc (the validating
| parser) into not producing validation errors.

You can tell xmlproc to read the external subset even when it does not
validate. Call parser.set_read_external_subset(1) to tell it to do so.

The SAX 2.0 property 

  'http://xml.org/sax/features/external-parameter-entities'

can be used to tell parsers to read the external subset. The only SAX
driver supporting this is that of xmlproc; support for it was checked
into CVS two minutes ago.

--Lars M.