402888 - Incorrect markup of identifiers in "MathML in Action"

Status: RESOLVED FIXED

(www.mozilla.org :: General, defect)

Description

[fcp]

Attachment: A proposed patch to fix the problem in markup

In MathML, products of two or more variables should be written like <mrow><mi>x</mi><mo>&InvisibleTimes;</mo><mi>y</mi></mrow> instead of <mi>xy</mi>. The latter form is rendered in upright shape (since it means one identifier consisting of several letters like "sin").

The web page "MathML in Action" is a good place to test installation and configuration of math fonts and MathML. However, this incorrect markup confuses users testing configuration.

Comment 1

[fcp]

For the record, the same issue applies also to items 16 and 17 of "MathML Torture Test" (http://www.mozilla.org/projects/mathml/demo/texvsmml.xhtml). They are reported in Bug 120198 Comment #75 and Bug 120198 Comment #94 and confirmed in Bug 120198 Comment #95, but they have not been fixed.

Comment 2

[Frédéric Wang Nélar]

For the "MathML Torture Test" I have proposed a patch to correct syntactic errors (i.e. make the document W3C-valid... see Bug 267882 Comment #14 ). I did not remember whether I take into account the error you mention. Anyway my patch has not been applied yet.

For the two other reports in Bug 120198 , I add that the "d" should in fact be rendered using the symbol "ⅆ" (DifferentialD).
See http://www.maths-informatique-jeux.com/international/mathml_test/integrals_and_differentials.xml

Comment 3

[Reed Loden [:reed]]

karlt, can you review the patch?

Comment 4

[Karl Tomlinson (:karlt)]

Comment on attachment 287712 [details] [diff] [review]
A proposed patch to fix the problem in markup

This looks fine if xy and xyz are really intended to be products of x and y (and z), but do we know that is really the intention?

Is the hat an operator (implying rate perhaps)?  Or is the hat in fact just part of the multi-character identifier to distinguish from a corresponding identifier without the hat?

Comment 5

[Karl Tomlinson (:karlt)]

Comment on attachment 287712 [details] [diff] [review]
A proposed patch to fix the problem in markup

I'm going to agree with you that xy and xyz are probably intended to be products of x and y
(and z), as xy and xyz would be strange multi-character identifiers.

PLease add the checkin-needed keyword if you do not have a cvs account yourself.

Comment 6

[fcp]

> PLease add the checkin-needed keyword if you do not have a cvs account
> yourself.
If "you" refers to me, I do not have a cvs account myself.

Comment 7

[Karl Tomlinson (:karlt)]

Checked in, thank you.