[NTG-context] MathML: Spacing bug

[Christopher Creutzig]

Salvete,

 afaics, the following three mathml snippets encode exactly the same thing:


---[1]------------
<mrow>

 <mi>a</mi>

 <mo>::</mo>

 <mi>b</mi>

</mrow>

---[2]------------
<mrow>
 <mi>a</mi>
 <mo>::</mo>
 <mi>b</mi>
</mrow>

---[3]------------
<mrow>
 <mi>a</mi><mo>::</mo><mi>b</mi>
</mrow>


 However, I only get the expected output from the third version.  Any
workaround or bugfix?

Regards,
	Christopher