On Mon, May 26, 2014 at 6:00 PM, Pablo Rodriguez <oinos@gmx.es> wrote:

> Dear list,
>
> I have the following sample:
>
>     \definetype[TeXcode][option=TEX]
>     \def\arg#1{\TeXcode{{#1}}}
>     \starttext
>     \arg{\em\de Textsatzsystem}
>
>     \TeXcode{{\em\de Textsatzsystem}}
>     \stoptext
>
> I don’t know what is wrong defined in \arg that inserts an extra space
> after \em?
>
> You can see how TeX works with \tracingmacros
\definetype[TeXcode][option=TEX]
\def\arg#1{\edef\temp{#1}\TeXcode{{#1}}}
\starttext
\tracingmacros1
\arg{\em\de Textsatzsystem}
\tracingnone
\tracingmacros1
\TeXcode{{\em\de Textsatzsystem}}
\tracingnone
\stoptext


-- 
luigi