170831 - Equation not displayed correct when using <apply>

Status: RESOLVED WORKSFORME

(Core :: MathML, defect)

Description

[llj]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.0) Gecko/20020613
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.0) Gecko/20020613

I'm trying to mark up the equation "P + (a-b)(c-d)" with the following MathML code:

<math xmlns="http://www.w3.org/1998/Math/MathML">
 <apply>
  <plus/>
  <ci>P</ci>
  <apply>
   <times/>
   <apply><minus/><ci>a</ci><ci>b</ci></apply>
   <apply><minus/><ci>c</ci><ci>d</ci></apply>
  </apply>
 </apply>
</math>

Mozilla displays this as "P &#8722; a(c &#8722; d)".

Reproducible: Always

Steps to Reproduce:

Comment 1

[rbs]

The testcase works for me.

You indeed need to use parallel markup with the <semantics> tag (bug 154931) or
transform from content-markup to presentation-markup (either on server or on the
client, using the UMSS as you did in the testcase):
<?xml-stylesheet type="text/xsl" href="http://www.w3.org/Math/XSL/mathml.xsl"?>

If you don't intent to do live computations on the markup, then there is no much
point making your visitors pay the price of doing a transform in their browser,
and so you could just prepare you document with presentation-markup and serve that.