[NTG-context] mkiv MathML bug?

Hans Hagen j.hagen at xs4all.nl
Thu Jun 27 21:46:01 CEST 2019


On 6/27/2019 6:35 PM, Duncan Hothersall wrote:
> I'm not sure this is something more general in the MathML module or if 
> it's specific to the vertical bar in this particular context, but here 
> is a minimal example showing that the "=0" at the end of the equation is 
> disappearing:

there is indeed some issue, i'll look into it

> \usemodule[mathml]
> \starttext
> \xmlprocessdata{}{<imath>
>          <math xmlns='http://www.w3.org/1998/Math/MathML'>
>            <mi>A</mi>
>            <mfenced open="(" close=")" separators="">
>              <mi>B</mi>
>              <mo>|</mo>
>              <mi>C</mi>
>            </mfenced>
>            <mo>=</mo>
>            <mn>0</mn>
>          </math>
>        </imath>}{}
> \stoptext

you can also try

             <mfenced open="(" close=")" separators="|">
               <mi>B</mi>
               <mi>C</mi>



> And here is a workaround using <mtext> instead of <mo> for the vertical 
> bar which makes the "=0" magically reappear again:
> 
> \usemodule[mathml]
> \starttext
> \xmlprocessdata{}{<imath>
>          <math xmlns='http://www.w3.org/1998/Math/MathML'>
>            <mi>A</mi>
>            <mfenced open="(" close=")" separators="">
>              <mi>B</mi>
>              <mtext>|</mtext>
>              <mi>C</mi>
>            </mfenced>
>            <mo>=</mo>
>            <mn>0</mn>
>          </math>
>        </imath>}{}
> \stoptext
> 
> Flagged up mainly in case it is a bigger problem than just vertical bars 
> in this specific context.
> 
> Thanks,
> 
> Duncan
> 
> 
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