[plt-scheme] DrScheme buglet?

I guess it would be possible to make a patch .plt file, but I'd be
hesitant to put it into an official patch release. Maybe Eli could be
convinced to do one just for you (and others like you), tho.

Eli, just in case, the only changes are in
plt/collects/lang/htdp-langs.ss, revision 7224, and I think that file
wasn't otherwise changed since the release.

Robby

On 8/29/07, Todd O'Bryan <toddobryan at mac.com> wrote:
> You are truly a prince among men!
>
> Is there a way to make a patch from current SVN or a similarly easy way
> to get this to my students? (Sorry, offer an inch and I'll ask for the
> moon. In addition, I will mix metaphors.)
>
> Seriously, though, THANKS BUNCHES!!!
>
> On Wed, 2007-08-29 at 21:32 -0500, Robby Findler wrote:
> > Well, sorry for the lack of clarity on my part, but the currently
> > checked in SVN version of drscheme always includes the teachpacks in
> > the REPL, regardless of the error that occurs (barring bugs, of
> > course).
> >
> > It does this by catching the compile-time exn, saving it, and then
> > making up a dummy program with nothing in it but the teachpacks. after
> > that program succeeds, it re-raises the original error.
> >
> > This does change the order of the raised exceptions in the case that
> > there is a runtime error in a teachpack and a compile-time error in
> > the original program, but that seems relatively unimportant.
> >
> > Also, this only works with the GUI-inserted teachpacks. If you
> > actually type "require" in your program, you get the old behavior.
> >
> > Robby
> >
> > On 8/29/07, Robby Findler <robby at cs.uchicago.edu> wrote:
> > > 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
> > >
>
>