Hi, there is a bug in \doprocessseparatedlist (syst-ext.tex). Problem is if a list item starts with a single_char followed by a space. See line 5: ---------------------------------------------- \starttext \def\Do#1{(#1)} 1\processseparatedlist[{aap noot}] [ ]\Do \par 2\processseparatedlist[{aap} {noot}][ ]\Do \par 3\processseparatedlist[aap {noot}] [ ]\Do \par 4\processseparatedlist[aap noot] [ ]\Do \par 5\processseparatedlist[aap;noot;a noot;noot a; noot a noot][;]\Do \par 6\processseparatedlist[][;]\Do \par 7\processseparatedlist[;][;]\Do \par \stoptext ------------------------------------------------- it returns (aap noot) (aap)(noot) (aap)(noot) (aap)(noot) (aap)(noot)noot(a)(noot a)(noot a noot) ^^^^^^^ Solution: \def\doprocessseparatedlist#1]#2[#3]#4% {\def\dodoprocessseparatedlist##1##2#3% {\def\tmp{##2}% ------------------------------- new \if]##1% \let\dodoprocessseparatedlist\relax \else\if]##2% \let\dodoprocessseparatedlist\relax %\else\ifx\blankspace##2% \else\ifx\blankspace\tmp % ------------------- new #4{##1}% \else #4{##1##2}% \fi\fi\fi \dodoprocessseparatedlist}% \@EA\dodoprocessseparatedlist\gobbleoneargument#1#3]#3} Best Vit