Wow, mathalignment is completely screwed in beta and TL2017. Hans, please fix!
---
\starttext
\placeformula
\startformula
\startmathalignment[m=2]
\NC a^2 + b^2 \NC= c^2 \NC a^2 + b^2 \NC= c^2 \NR
\stopmathalignment
\stopformula
\stoptext
On Tue, 2017-06-06 at 11:06 +1200, Henri Menke wrote:
> It seems that \NC in mathalignment is looking ahead for the next \NR, because
> when I wrap the
> matrix
> in an explicit brace group it works fine again:
>
> \definemathmatrix
> [pmatrix]
> [left=\left(,right=\right)]
>
> \starttext
>
> \placeformula
> \startformula
> \startmathalignment
> \NC \sigma_x \NC=
> {\startpmatrix
> \NC 0 \NC 1 \NR
> \NC 1 \NC 0 \NR
> \stoppmatrix}
> \NR[+]
> \stopmathalignment
> \stopformula
>
> \stoptext
>
> On Tue, 2017-06-06 at 10:26 +1200, Henri Menke wrote:
> >
> > Dear list,
> >
> > When I have a mathmatrix inside a mathalignment the numbering using \NR[+]
> > does not work
> > anymore.
> > Instead it prints "[+]" on the next line. I guess the definition of \NR
> > from mathmatrix leaks
> > outside. Affects both TL2017 and latest beta. MWE is below.
> >
> > Cheers, Henri
> >
> > ---
> >
> > \definemathmatrix
> > [pmatrix]
> > [left=\left(,right=\right)]
> >
> > \starttext
> >
> > \startformula
> > \startmathalignment
> > \NC \sigma_x \NC=
> > \startpmatrix
> > \NC 0 \NC 1 \NR
> > \NC 1 \NC 0 \NR
> > \stoppmatrix
> > \NR[+]
> > \NC \sigma_y \NC=
> > \startpmatrix
> > \NC 0 \NC -i \NR
> > \NC i \NC 0 \NR
> > \stoppmatrix
> > \NR[+]
> > \NC \sigma_z \NC=
> > \startpmatrix
> > \NC 1 \NC 0 \NR
> > \NC 0 \NC -1 \NR
> > \stoppmatrix
> > \NR[+]
> > \stopmathalignment
> > \stopformula
> >
> > \stoptext
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