答案1
更新我发现您也会对某些案例的构造感到满意。因此,您可以尝试 asimplealign
或 some cases
。
\definemathsimplealign
[sergei]
[left={\startmathfenced[brace]},
right={\stopmathfenced}]
\definemathfence
[foo]
[left=none,
right="27E9]
\definemathcases
[FOO]
[fences=foo]
\starttext
\startbuffer
\startsergei
\NC A \EQ B \NR
\NC B \EQ C \NR
\stopsergei
\stopbuffer
Test $\getbuffer$
\startbuffer
\startFOO
\NC A \NC B \NR
\NC B \NC C \NR
\stopFOO
\stopbuffer
Test $\getbuffer$
\stoptext