Hi, LuaTeX hangs in the following example, it is related to the optional argument for \startTEST.
\def\startTEST {\dosingleempty\dostartTEST} \long\def\dostartTEST[#1]#2\stopTEST {\bgroup \processaction [#1] [bold=>\bf, italic=>\it unknown=>\tf]% #2% \egroup} \def\TEST#1% {\startTEST#1\stopTEST} \def\defineTEST[#1]% {\processbetween{#1}{\TEST}} \defineTEST[MYTEST] \starttext \startMYTEST text \stopMYTEST \startMYTEST[bold] text \stopMYTEST \stoptext Greetings, Wolfgang ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : https://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________