Am 17.07.2011 um 14:01 schrieb Jaroslav Hajtmar: > Hello all, > > For several hours trying to find solutions of problem. > > My minimal example (I mention it at the end of email) for clear reasons > show, that : > > 7 is not number. > 7 is number. > 7is not number. > 7is not number. > > In the first is argument '\value' negotiable to the value, in second it is > not possible (but for clear reasons too). > > I would need to find from argument ie macro '\\value' in the LUA function > its numerical value. > Is there any function that would do that? > > I need something as a function of context (...), which would, however, its > output is not located into ConTeXt, but its result get to back to a Lua > function or into variable. > It is something like the expansion of an existing ConTeXt macro to its value.
\startluacode function test(arg) -- use thirddata namespace for real functions if type(tonumber(arg)) == "number" then if tonumber(arg) > 0 then context("The argument \\quotation{%s} is a positive number",arg) else context("The argument \\quotation{%s} is a negative number",arg) end else context("The argument \\quotation{%s} is a string.",arg) end end \stopluacode \starttext \ctxlua{test("7")} \ctxlua{test("-4")} \ctxlua{test("text")} \stoptext 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 : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________