[racket-dev] , en and enter! sometimes do nothing, and it's changing over releases?

From: Ray Racine (ray.racine at gmail.com)
Date: Sun Feb 10 17:43:18 EST 2013

Yes, the Geiser server is meta to the target namespace and evals the sent
form in target namespace.

racket/enter.rkt does inject

;; Injecting racket/enter into the namespace to allow entering another
 (unless (memq '#:dont-re-require-enter flags)
 (namespace-require 'racket/enter)))

And I agree tooling such as Geiser, xrepl should be meta to entered

On Sun, Feb 10, 2013 at 1:28 PM, Eli Barzilay <eli at barzilay.org> wrote:

> Yesterday, Ray Racine wrote:
> >
> > So the goal is to have entering a module inject the proper typed or
> > untyped version of do-enter! by doing a namespace-require on either
> > "enter.rkt" or "typed-enter.rkt".  To do that I need to query the
> > current-namespace as to whether the namespace language is racket or
> > typed/racket, a "namespace-language" procedure.
> That won't be a general-enough hack: what happens with other
> languages?  But more generally there is no way to do that that works
> everywhere, since some languages would want to stay very restricted
> and not allow any new bindings.  I think that the xrepl approach for
> this (and likely geiser's) works well: you use `enter!' at the meta
> level, which means that there is no need for any injections.  So it
> looks to me better if things stay as they are, with direct uses of
> `enter!' being somewhat limited as they are now, and using a proper
> meta tool when needed.
> --
>           ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
>                     http://barzilay.org/                   Maze is Life!
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