[NTG-context] How to make \def accept block or buffer as part of (long) command argument

2 Jan 2022

      Hi list,

I'm playing around with blocks and buffers again, realizing that I cannot use them inbetween a \start...\stop that I defined myself. Apparently, they work between \startsection...\stopsection and the like, so I was wondering how I should define or expand #2 in the MWE below to make TeX happily accept these useful features?

Thanks a lot

Benjamin

\starttext

\let\stopMyCommand\relax

\tolerant\protected\def\startMyCommand[#1]#2\stopMyCommand{

	Optional argument #1

	Content #2

}

\bf Here we test the command: Works \tf

\startMyCommand[is optional]
gets processed!
\stopMyCommand

\bf Here we test the block: Works \tf

\defineblock[MyBlock]

\beginMyBlock
Block for something else.
\endMyBlock

\useblocks[MyBlock][criterium=text]

\bf Here we test the block inside command: Fails \tf

% UNCOMMENT BELOW FAILS: tex error > runaway error: end of file encountered
%
% \startMyCommand[is optional]
% Still?
%
% \beginMyBlock
% Block for something else.
% \endMyBlock
% \stopMyCommand

\definebuffer[MyBuffer]

\bf Here we test the buffer: Works \tf

\startbuffer[MyBuffer]
Buffer for something else.
\stopbuffer

\getbuffer[MyBuffer]

\bf Here we test the buffer inside command: Fails \tf

% UNCOMMENT BELOW FAILS: tex error > runaway error: end of file encountered
%
% \startMyCommand[is optional]
% Still?
%
% \startbuffer[MyBuffer]
% Buffer for something else.
% \endbuffer
% \stopMyCommand

\stoptext

[NTG-context] How to make \def accept block or buffer as part of (long) command argument

Benjamin Buchmuller