Hmm! I can not find the problem. Here is a short example, showing the error. Hope that someone can give me a hint! \usemodule[verb-c] \starttext \startC "*\0" \stopC \stoptext and the errormessage: ! Extra \else. \doCtypefiveA ...mment \getpretties {#1}{#2}\else \ifinCsingle \getprettydat... \doCtypefourfour ...pretty \expandafter #2\fi \fi \fi \fi \fi <argument> "*\ 0"\relax \flushrestofverbatimline \processverbatimline #1->#1 \dodoverbatimline ...ax \flushrestofverbatimline } \endverbatimline \global \... \presetlastverbatimline ...r \doflushverbatimline \else \kern \zeropoint \do... ... l.16 \stopC ?