On Oct 24, 2014, at 11:56 PM, Alexander D. Knauth <alexan...@knauth.org> wrote:
> Do you mean something like this?: > > (provide (rename-out [-#%module-begin #%module-begin])) > > (define-syntax-rule (-#%module-begin form ...) > (#%module-begin > (module configure-runtime racket/base > (current-prompt-read > (let ([old-prompt-read (current-prompt-read)]) > (lambda () > (parameterize ([current-readtable (make-readtable-for-my-lang)]) > (old-prompt-read)))))) > form ...)) > I just tried this and it didn’t work. Is there anything else I could need to do to make something like this work? And also would this conflict with other configure-runtime submodules that might be created? > > On Oct 24, 2014, at 11:19 PM, Matthew Flatt <mfl...@cs.utah.edu> wrote: > >> I think a `configure-runtime` submodule (in the expansion of any module >> using the language) is the right place for this kind of configuration. >> >> The `configure-runtime` submodule is similar to `main`, it that it is >> only used when the enclosing module is the main module of a program. >> >> Instead of a direct `(current-readtable ...)`, I think you'll want a >> direct `(current-prompt-read ...)`, where the prompt read handler uses >> `(parameterize ([current-readtable ...]) (read-syntax ...))`. >> >> At Fri, 24 Oct 2014 22:56:37 -0400, "Alexander D. Knauth" wrote: >>> Is there a way to specify a reader for the repl for a language? >>> >>> One bad way to do this would be to modify #%module-begin to include >>> (current-readtable (make-readtable-for-my-lang)) >>> or something like that. >>> See >>> https://github.com/greghendershott/rackjure/pull/46 >>> https://github.com/greghendershott/rackjure/pull/46#issuecomment-60378324 >>> >>> One problem with this is that if this module is required from a module >>> without >>> this language, it would affect that module’s current-readtable. >>> >>> So is there a better solution, and if there’s not, would it be possible to >>> add >>> it? >>> >>> >>> >>> ____________________ >>> Racket Users list: >>> http://lists.racket-lang.org/users > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users
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