[plt-scheme] DrScheme buglet?

On 8/29/07, Todd O'Bryan <toddobryan at mac.com> wrote:
> On Wed, 2007-08-29 at 11:01 -0500, Robby Findler wrote:
> > On 8/29/07, Todd O'Bryan <toddobryan at mac.com> wrote:
> > > Yep. This is what's happening and it's kind of what I suspected.
> > >
> > > I wonder if there would be some way to create a definition scope that
> > > just consists of the teachpacks and then add the user definitions to
> > > that scope if it's syntactically well-formed. If it's not, just load the
> > > teachpack scope or something.
> >
> > In general, that's a wonderful research question :)
> >
> Is this really a research question? I'll admit I'm not up enough on how
> exactly contexts are implemented, but isn't it somewhat additive? Can't
> you evaluate the teachpacks, save the data structure you get, evaluate
> the user defs and use the saved structure or the final structure
> depending on whether or not you get an error?
>
> Obviously, I'm vastly oversimplifying or you wouldn't have said what you
> said, but can you tell me how I'm oversimplifying concisely in a way
> that's not likely to make my brain explode? :-) No is an acceptable
> answer.

Oh -- you know I didn't think carefully about what you said. I just
thought "macros, you can't do that!". But, one could probably get the
effect of what you suggest by trying to compile the (implicit) module
and, if it fails, just compile a module that only contains the
teachpacks, without the user's program, and then make that available
to the user.

Robby