442209 - stretchy characters not stretched in MathML-only document

Status: NEW

(Core :: MathML, defect)

Description

[Justus Piater]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9) Gecko/2008052912 Firefox/3.0
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9) Gecko/2008052912 Firefox/3.0

Stretchy characters appear correctly in MathML embedded inside an
XHTML document, but if the same MathML content is read from a
non-XHTML file containing the math element as its root element, they
are not stretched. See and compare: 

http://intelsig.montefiore.ulg.ac.be/~piater/test/stretch.xhtml (application/xhtml+xml)
http://intelsig.montefiore.ulg.ac.be/~piater/test/stretch.xml (application/xml)

If the MathML content appears inside non-MathML tags, the parentheses are stretched correctly. See the following (invalid) document:

http://intelsig.montefiore.ulg.ac.be/~piater/test/stretch-foo.xml (application/xml)

Another piece of evidence that this is not a MIME-type issue: The following is the same MathML-only content as stretch.xml and behaves the same in Firefox, but it is (incorrectly) served as XHTML:

http://intelsig.montefiore.ulg.ac.be/~piater/test/stretch-false.xhtml (application/xhtml+xml)

More generally, MathML-only documents are not handled correctly. Content explicitly served as MathML is not recognized at all (but this may have nothing to do with the above issue):

http://intelsig.montefiore.ulg.ac.be/~piater/test/stretch.mml (application/mathml+xml)


Reproducible: Always

Steps to Reproduce:
Point your Firefox3 to http://intelsig.montefiore.ulg.ac.be/~piater/test/stretch.xml
Actual Results:  
Parentheses are not stretched.

Expected Results:  
Parentheses should be stretched.

This is an out-of-the-box Firefox3 with no relevant parameters changed, and a system-wide STIXBeta font set.

Depending on how you define Firefox' scope, you may declare this a non-issue. However, Firefox has all it takes to be a first-grade MathML viewer, so I think this should be fixed.

Comment 1

[Karl Tomlinson (:karlt)]

Hmm.  Adding

<!DOCTYPE math PUBLIC "-//W3C//DTD MathML 2.0//EN"	
	"http://www.w3.org/TR/MathML2/dtd/mathml2.dtd">

doesn't help anything.
Bug is present in FF2 as well as trunk.

Comment 2

[Frédéric Wang (:fredw)]

> More generally, MathML-only documents are not handled correctly. Content
> explicitly served as MathML is not recognized at all (but this may have nothing
> to do with the above issue):
> 
> http://intelsig.montefiore.ulg.ac.be/~piater/test/stretch.mml
> (application/mathml+xml)

This separate issue has been fixed in bug 152001 and bug 124709.

---> changing bug title