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<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Foo//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-foo.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title></title> </head> <body> <p><font>...</font></p> </body> </html> Validator claims This Page Is Valid -//W3C//DTD XHTML 1.0 Foo//EN! But Validation should clearly fail as the FPI is not known and http://www.w3.org/TR/xhtml1/DTD/xhtml1-foo.dtd does not exist. The example slightly modified <?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Foo//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title></title> </head> <body> <p><font>...</font></p> </body> </html> Again: This Page Is Valid -//W3C//DTD XHTML 1.0 Foo//EN! http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd does exist and prohibes the <font> element, so this should not validate either.
Fixed in CVS.