� wrote:
On Sun, 15 Jan 2006, Henning Hraban Ramm wrote:
Now I must only find a way to *subtract* a layer, but I guess I can manage that with some "doifmode"s
Hello TeX-experts,
I tried to do the layer-subtraction, but it seems that I need more experience with expansion in TeX. Here is the error: ! Undefined control sequence. \GetList #1,#2;->\edef \ListHead
teaser: \def\ResetMyList{\lua{MyList = {} ;}} \def\FlushMyList{\lua{tex.print(table.concat(MyList,","))}} \def\AddToMyList#1#2{\lua{table.insert(MyList,#1,"#2")}} \def\RemoveFromMyList#1{\lua{table.remove(MyList,#1)}} \defineoverlay[mine-1][ONE] \defineoverlay[mine-2][TWO] \defineoverlay[mine-3][THREE] \startsetups [test] \framed[background={\FlushMyList}]{it works okay} \stopsetups \ResetMyList \AddToMyList{1}{mine-1} \setups[test] \AddToMyList{2}{mine-2} \setups[test] \AddToMyList{1}{mine-3} \setups[test] \RemoveFromMyList{1} \setups[test] \RemoveFromMyList{1} \setups[test] \RemoveFromMyList{1} \setups[test] but ... for at least half a year [we don't expect to have a stable user interface before eurotex] you have to fall back on list processing macros in syst-gen.tex and syst-ext.tex (you can add to lists, split lists and reconstruct them using those macros) Hans