Re: [Maxima-discuss] wxMaxima errors under 5.47

[Robert D. <rob...@gm...>]

On Sun, Jun 11, 2023 at 12:20 PM Barton Willis via Maxima-discuss
<max...@li...> wrote:

> (kill(n),printf(false,"~m",(n!)!))
> Result:
> "<math><mrow lisp="wxxml-paren"><p lisp="wxxml-paren"><mi lisp="*var-tag*">n</mi><mo>!</mo></p></mrow><mo>!</mo></math>"
> This differed from the expected result:
> "(n!)!

> (trace(atom),with_stdout(S,atom(1)),get_output_stream_string(S))
> Result:
> "<math> <mn>1</mn><st> Enter </st><mi lisp="*var-tag*">atom</mi><st> </st><mrow list="true"><t lisp="mlist" listdelim="true">[</t><mrow><mn>1</mn></mrow><t lisp="mlist" listdelim="true">]</t></mrow><st></st><st></st></math><math> <mn>1</mn><st> Exit  </st><mi lisp="*var-tag*">atom</mi><st> </st><t lisp="true">true</t><st></st><st></st></math>"
> This differed from the expected result:
> "1 Enter atom [1]
> 1 Exit  atom true
> "

Looks like both of these are due to wxMaxima intercepting the display
mechanism and interjecting its own markup. I guess wxMaxima needs to
figure out whether the output is destined for its notebook display or
not. I don't know how to handle that in general -- it might be hard to
tell, down in the depths of the display code, when all you have in
hand is an output stream.

Another possibility is to say that's the correct output, given that
the display mechanism has been modified. However, I'm leaning towards
saying that output is incorrect, and the redefined display needs to
suppress the extra markup when the output is not going to the notebook
display.

FWIW

Robert