[racket] module->language-info at repl

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.

At Thu, 01 Sep 2011 13:01:48 -0600, Jon Rafkind wrote:
> More details on how my system is setup:
> 
> 1. Make a directory for a new language called Z
> 2. Edit Z/lang/reader.rkt and put this in there
> #lang s-exp syntax/module-reader
> 
> Z
> 
> #:info z-info
> 
> (define (z-info key default filter)
>   (printf "called z-info\n")
>   (filter key default))
> 
> 3. Edit Z/main.rkt
> #lang racket/base
> (provide (all-from-out racket/base))
> 
> 4. Run with the Z language
> $ PLTCOLLECTS=`pwd`:$PLTCOLLECTS racket -Iq Z
> Welcome to Racket v5.1.3.6.
> >
> 
> At this point I would expect it to say "called z-info" to try to set up the 
> runtime.
> 
> 
> On 09/01/2011 12:50 PM, Jon Rafkind wrote:
> > The repl doesn't seem to invoke the module language's get-info procedure. My 
> #lang has a `get-info' procedure that is passed to the module-reader by #:info
> > honu-info. get-info is defined as
> >
> > (provide honu-info)
> > (define (honu-info key default default-filter)
> >   (printf "get info for ~a\n" key)
> >   (case key
> >     [(color-lexer) (dynamic-require 'honu/core/read
> >                                     'color-lexer)]
> >     [(configure-runtime) `(#(honu/core/runtime configure))]
> >     [else
> >       (default-filter key default)]))
> >
> > It seems only drracket will call `get-info', though. Is there a way to make 
> the repl call this as well, and if it doesn't can we make it?
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