Sylvain Hubert schrieb am 08.11.2020 um 04:54:

Dear List,

Could anyone manage to typeset the following example? Here [] causes an error "Extra }, or forgotten \endgroup".

    \starttext     \define\sample{     \startxtable[]     \startxtablehead     \startxrow     \startxcell 123\stopxcell     \stopxrow     \stopxtablehead     \stopxtable     }     \sample     \stoptext

\starttext \define\sample {\startembeddedxtable \startxrow \startxcell \unknown \stopxcell \stopxrow \stopembeddedxtable} \sample \stoptext or \starttext \startbuffer[sample] \startxtable \startxrow \startxcell \unknown \stopxcell \stopxrow \stopxtable \stopbuffer \getbuffer[sample] \stoptext Wolfgang