[NTG-context] issue when the encapsulation ‘startitem stopitem’ command is in another self-defined command

28 Dec 2024

      hi,

I'm creating a command that can format multiple choice questions on my own. 
I've done most of it at the moment. 
But I want more, so I'm trying to create more versions of this command 
that is already nearing completion. 
So I'm using the following command to create a command with more possibilities.

I've noticed that ‘startitem stopitem’ isn't working. 
Their location and serial number are anomalous.

%%%% Removed some unnecessary commands to show what the problem was.
% macros=mkvi
\starttext
\unprotect
\installnamespace          {chitem}
\installcommandhandler \????chitem     {chitem}     \????chitem

\appendtoks
 \setuevalue{\e!start\currentchitem}{\startnamedchitem [\currentchitem]}%
 \setuevalue{\e!stop \currentchitem}{\stopnamedchitem}%
\to \everydefinechitem

\tolerant\protected\def\markedchoice#1{{\sym{@} \red sym : #1}}
\tolerant\protected\def\normalchoice#1{\startitem normal : #1\stopitem}
\tolerant\protected\def\\calc_maxwidth#1{}
%The longest option text is calculated by comparison to
%  determine the number of columns that can be typeset

\tolerant\protected\def\startnamedchitem[#chitem]#*[#mark]#*[#option]#*#choice\stopnamedchitem%
 {\begingroup
%  \ifarguments 0\or :1\or +2\or =3\or !4\fi
  \def\currentchitem{#chitem}%
  \edef\p_correctmark{*}\edef\p_paramark{#mark}%
  \calc_maxwidth{#choice}%
  \ifx\p_paramark\p_correctmark
      \markedchoice{#choice}%
  \else
      \normalchoice{#choice}%
  \fi\endgroup}

\def\stopnamedchitem{}
\definechitem[chitem]
\protect

\startitemize[n,horizontal,two]% 
% The process of calculating the number of formattable columns 
% has been removed and the results of the calculations are used directly.
\startchitem xxx\stopchitem
\startchitem[*]correct choice\stopchitem
\startchitem xxx\stopchitem
\startchitem xxx\stopchitem
\stopitemize

\stoptext
%%%%%

thanks for any help,
autumnus