Closed Bug 265821 Opened 20 years ago Closed 20 years ago

XHTML document is rendered as pretty-print if xmlns attribute is missing or invalid

Categories

(SeaMonkey :: General, defect)

Product:
SeaMonkey
Component:
General
Platform:
x86
Windows Server 2003
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

(Not tracked)

Status:
RESOLVED INVALID

People

(Reporter: alexeyc2003, Unassigned)

Details

Attachments

(1 file)

testcase
216 bytes, application/xhtml+xml
Details 
Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.8a5) Gecko/20041023
Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.7.3) Gecko/20041014
Firefox/0.10

An XHTML 1.0 or 1.1 document is rendered as XML pretty-print when <html> tag is
missing xmlns= attribute.

In XHTML DTDs this attribute has default value specified. Which means it's value
is known when the attribute is omitted in the document.

Also the attribute is of type #FIXED, which means that if a different value is
provided, XML parser should raise an error, which Mozilla doesn't do. But since
we're not a validating browser, this is irrelevant, though I think pretty-print
is not the best reaction to this either.

Here are the relevant DTD definitions:

XHTML 1.0:

<!ELEMENT html (head, body)>
<!ATTLIST html
  %i18n;
  id          ID             #IMPLIED
  xmlns       %URI;          #FIXED 'http://www.w3.org/1999/xhtml'
  >

XHTML 1.1:

<!ENTITY % XHTML.xmlns  "http://www.w3.org/1999/xhtml" >
<!ENTITY % XHTML.xmlns.attrib
     "xmlns        %URI.datatype;           #FIXED '%XHTML.xmlns;'
      %XLINK.xmlns.attrib;"
>
<!-- html: XHTML Document Element ...................... -->

<!ENTITY % html.element  "INCLUDE" >
<![%html.element;[
<!ENTITY % html.content  "( %head.qname;, %body.qname; )" >
<!ENTITY % html.qname  "html" >
<!ELEMENT %html.qname;  %html.content; >
<!-- end of html.element -->]]>

<!ENTITY % html.attlist  "INCLUDE" >
<![%html.attlist;[
<!ENTITY % XHTML.version.attrib
     "version      %FPI.datatype;           #FIXED '%XHTML.version;'"
>
<!ATTLIST %html.qname;
      %XHTML.xmlns.attrib;
      %XHTML.version.attrib;
      %I18n.attrib;
>
<!-- end of html.attlist -->]]>



To reproduce, see attached testcase.

Expected behaviour: Render XHTML documents with missing xmlns= attribute.
Current behaviour: Document is pretty-printed.
Attached file testcase — 
A valid XHTML 1.1 document with a missing xmlns= attribute on <html> tag.
INVALID. You can't have a valid XHTML document if it doesn't have an xmlns
attribute, since without an xmlns attribute, the element isn't in the XHTML
namespace. See XHTML 1.0 section 3.1.1 subitem 3, and Namespaces in XML 1.0,
section 4, subsection "Namespace Constraint: Prefix Declared", paragraph 2,
sentence 4.
Status: NEW → RESOLVED
Closed: 20 years ago
Resolution: --- → INVALID
Product: Browser → Seamonkey
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