Alternatively, I think you can simply supply a non-exception value to the
handler. This will suppress the red cross icon too, though.
(define (print-exn exn)
((error-display-handler)
(if (exn? exn)
(exn-message exn)
(format "~a" exn))
#f))
On Sat, Aug 29, 2020 at 8:17 AM Robby Findler <ro...@cs.northwestern.edu>
wrote:
> It might make the most sense for you to extract the exn-message and print
> it yourself? It should contain only the "a: undefined" part. If you want to
> selectively access the stacktrace and decide whether or not to print that
> first stackframe, that'll probably require a change to DrRacket, tho -- at
> least if you have debugging turned on. (There may be some clever hack I'm
> not thinking of, tho, depending on what you want.)
>
> Robby
>
> On Sat, Aug 29, 2020 at 10:11 AM Shriram Krishnamurthi <s...@cs.brown.edu>
> wrote:
>
>> Thank you!
>>
>> Is there a way of further suppressing info? Right now I get output like
>>
>> [image: image.png] ../../make-semantics.rkt:37:13: a: undefined
>>
>>
>> which is a reference to the language implementation file rather than to
>> the program in the language.
>>
>> The programs here are so small that suppressing everything but the "a:
>> undefined" would be great.
>>
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>>
>
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