On May 11, 2015, at 4:22 PM, Alexis King <lexi.lam...@gmail.com> wrote:
> I’ve gotten my curly-fn meta-language working, and it works great within a
> module. However, evaluating #{+ 2} within the REPL just evaluates as a plain
> old vector, ignoring my readtable extension.
>
> What gives? Using @-expression syntax in the REPL works just fine when using
> the at-exp meta-language, which seems pretty similar to my approach.
To do that, you’d have to use language-info as described in:
http://docs.racket-lang.org/guide/module-runtime-config.html
The at-exp language does that with this code here:
https://github.com/plt/racket/blob/master/pkgs/at-exp-lib/at-exp/lang/reader.rkt#L34
https://github.com/plt/racket/blob/master/pkgs/at-exp-lib/at-exp/lang/language-info.rkt
https://github.com/plt/racket/blob/master/pkgs/at-exp-lib/at-exp/lang/runtime-config.rkt
Also, have you seen
https://github.com/AlexKnauth/afl
The afl language supports #λ(...), #fn(…) and #lambda(…) in the repl by doing a
similar thing:
https://github.com/AlexKnauth/afl/blob/master/afl/lang/reader.rkt#L28
https://github.com/AlexKnauth/afl/blob/master/afl/lang/language-info.rkt
https://github.com/AlexKnauth/afl/blob/master/afl/lang/runtime-config.rkt
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