Re: [NTG-context] Typing within doifmode leads to error

20 Mar 2021


      On 3/20/2021 4:00 PM, Christoph Reller wrote:
...
On Sat, Mar 20, 2021 at 12:12 PM Hans Hagen mailto: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?
When the file gets preprocessed the mode is not known

context --mode=A foo.tex

it does of course also work when you set the mode in a parent file and 
then include foo.tex

Hans


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