On Sat, Mar 20, 2021 at 12:12 PM Hans Hagen <j.hagen@xs4all.nl> wrote:

> On 3/20/2021 8:24 AM, Aditya Mahajan wrote:
> > On Sat, 20 Mar 2021, Christoph Reller wrote:
> >> Of course we can do this in lua:
> >>
> >> if tex.modes["A"] and not tex.modes{"B"] then
> >> ...
> >> end
> >
> > ... which means that you can use that at the context end as well (old
> feature).
> > Save the following as test.mkix (or add "% macros=mkix" as the first
> line):
> >
> > ```
> > \starttext
> > <?lua if tex.modes["A"] and not tex.modes["B"] then ?>
> > \starttyping
> > A and not B
> > \stoptyping
> > <?lua else ?>
> > \starttyping
> > not (A and not B)
> > \stoptyping
> > <?lua end ?>
> > \stoptext
> a neat application!
>
>
Thank you for this hint, Aditya. This would be a very nice solution indeed.
But it does not seem to work:

% macros=mkix
\definemode[A][yes]
\starttext
\startluacode
  if tex.modes['A'] then
    context("A")
  end
\stopluacode
<?lua if tex.modes['A'] then ?>
A
<?lua end ?>
\stoptext

With ConTeXt LMTX 2021.03.17 the output of the above is a single "A". I
would expect two. What am I doing wrong?

Christoph