Hi Hamish,
I find this confusing too.
It seems that the pretty printer calls the different handlers in order
to detect cycles. If one turns of the pretty printer I get two calls
instead of one.
I am not exactly sure, why the pretty printer needs to this.
The code in question:
https://github.com
Dear Racket-users
I am trying to understand the behaviour of the `gen:custom-write`
method. What I find confusing is that the `write-proc` function is
called twice for explicit calls to `write`, `display` or `print` and
three times when display happens in the (x)repl. For example:
-> (struct thi
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