curly-fn language syntax not recognized in the repl

[primer]

If I run this program:

#lang curly-fn racket   
(map #{/ 1}  '(1 2 3))

I get the expected result in the repl.  But in the repl after the run, if I type:

(map #{/ 1}  '(1 2 3))

I get an error:

#%namespaced: undefined;
 cannot reference an identifier before its definition

Is there a way to make this work in the repl?

[Greg Hendershott]

It looks like this works neither in Dr Racket nor Racket Mode's REPLs.

From a hasty, shallow look, it seems that the curly-fn package <https://docs.racket-lang.org/curly-fn/index.html> uses a convention or protocol defined by the namespaced-transformer package <https://docs.racket-lang.org/namespaced-transformer/index.html>.

As a quick experimental hack, if I namespace-require the namespaced-transformer module before entering read-eval-print-loop -- so that the #%namespaced syntax transformer is defined -- then this does work in Racket Mode's REPL.

So I could... just add that. But I don't know the history of this. Is this a convention that Alexis proposed be adopted by Dr Racket? If so, was it not adopted simply due to lack of time, or, for technical reasons like gotchas or some other ideas about how to approach this?

Maybe someone like Alexis or Robby remembers?

[Robby Findler]

I don't remember. :(

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