> Pablo Rodriguez <mailto:oinos@gmx.es>
> 17. September 2015 18:47
> Dear list,
>
> I have the following sample:
>
> \startluacode
> function document.gouppercase(str)
> tex.print(str:upper())
> end
> \stopluacode
>
> \unexpanded\def\MyUpper#1%
> {\ctxlua{document.gouppercase("#1")}}
>
> \starttext
> \doif{\MyUpper{adfalkjfaeñf}}{\MyUpper{aDFAlkjfaeñf}}{equal}{unequal}
>
> \ctxlua{if string.upper("adfalkjfaeñf") == string.upper("aDFAlkjfaeñf")
> then tex.print("equal") else tex.print("unequal") end}
> \stoptext
>
> Why are are the first two strings unequal?
You can’t use a unexpandable (which you created with \unexpanded) in 
ConTeXts \doifXXX commands.

PS. You need \doifelse and not \doif.

Wolfgang