[racket] module->language-info at repl

From: Sam Tobin-Hochstadt (samth at ccs.neu.edu)
Date: Thu Sep 1 16:02:06 EDT 2011

On Thu, Sep 1, 2011 at 3:43 PM, Matthew Flatt <mflatt at cs.utah.edu> wrote:
> Instead of `#:info', you want to specify `#:language-info'.
> The `#:info' hook is for things related to the *source* of a module in
> the language, such as syntax coloring in DrRacket for a module that
> start `#lang Z'. The plain `racket' REPL doesn't deal with the module's
> source at all in that sense.
> The `#:language-info' hook is for things related to *running* a module
> that starts `with `#lang Z'. When such a module is provided to
> `racket', then `racket' uses `configure-runtime' before instantiating
> the module.

This doesn't seem to be working for me.  That is, the `datalog'
collection has a `#:language-info' specification, which sets the
`current-read-interaction' parameter, but it seems to only affect
DrRacket, not the plain REPL.

[samth at punge:~/sw/plt/collects (master) plt] r -qil datalog
Welcome to Racket v5.1.3.6.
> 3
> (+ 3 4)

Welcome to DrRacket, version [3m].
Language: datalog [custom]; memory limit: 512 MB.
> 3
. datalog: Unexpected token EOF in: #f
> (+ 3 4)
. datalog: Unexpected token LPAREN in: #f

sam th
samth at ccs.neu.edu

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