mkiv MathML bug?

mkiv MathML bug?

[Duncan Hothersall]

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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:

\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

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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Re: mkiv MathML bug?

[Hans Hagen]

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
> 
> 
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
> 


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If your question is of interest to others as well, please add an entry to the Wiki!

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___________________________________________________________________________________

Re: mkiv MathML bug?

[Duncan Hothersall]

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On Thu, 27 Jun 2019, 20:46 Hans Hagen, <j.hagen@xs4all.nl> wrote:

> 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
>

Thanks Hans.

>
>
> you can also try
>
>              <mfenced open="(" close=")" separators="|">
>                <mi>B</mi>
>                <mi>C</mi>
>

I did try that, it didn't seem to work quite as expected either.

Thanks again.

Duncan

>
>

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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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wiki     : http://contextgarden.net
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