On Sep 4, 2008, at 8:45 AM, Wolfgang Schuster wrote: > \def\Commanda > {\doquadrupleempty\doCommanda} > > \def\doCommanda[#1][#2][#3][#4]% > {\iffourthargument > \def\next{\doCommandafive[#1][#2][#3][#4]}% > \else > \def\next{\doCommandafour[#1][#2][#3]}% > \fi\next} > > \def\doCommandafive[#1][#2][#3][#4]#5% > {five arguments} > > \def\doCommandafour[#1][#2][#3]#4% > {four arguments} > > > \def\Commandb > {\doquadrupleempty\doCommandb} > > \def\doCommandb[#1][#2][#3][#4]% > {\iffourthargument > \def\next{\dodoCommandb[#1][#2][#3][#4]}% > \else > \def\next{\dodoCommandb[#1][#2][#3][]}% > \fi\next} > > \def\dodoCommandb[#1][#2][#3][#4]#5% > {\doifelsenothing{#4} > {four arguments} > {five arguments}} > > \starttext > > \Commanda[1][2][3][4]{5} > > \Commanda[1][2][3]{4} > > \Commandb[1][2][3][4]{5} > > \Commandb[1][2][3]4 > > \Commandb[1][2][3][]{4} % feature > > \stoptext > > Wolfgang
YES! That's the end of my suffering!! Thanks a lot, Wolfgang, you're my hero. Makes sense, too, now that I look at it. Now I'm gonna find out what \next does... Thanks! Thomas ___________________________________________________________________________________ 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 ___________________________________________________________________________________