[NTG-context] mathmatrix vs substack

11 Sep 2017

      Dear devs,

Thank you very much for fixing this one
https://mailman.ntg.nl/pipermail/ntg-context/2017/089790.html
Unfortunately it seems like you broke substack and mathmatrix on the way.  MWE below fails
with version 2017.09.08 17:24

Cheers, Henri

---

\starttext

\placeformula
\startformula
  \sum_{\startsubstack
    \NC k \NR
    \NC \omega_n \NR
  \stopsubstack}
\stopformula

\placeformula
\startformula
  \startmathmatrix[left=\left|,right=\right|]
    \NC 0 \NC 1 \NR
    \NC 1 \NC 0 \NR
  \stopmathmatrix
  = -1 .
\stopformula

\stoptext