[racket-dev] Stumped!

From: Pierpaolo Bernardi (olopierpa at gmail.com)
Date: Fri Feb 22 14:13:29 EST 2013

On Fri, Feb 22, 2013 at 4:40 PM, Ryan Culpepper <ryanc at ccs.neu.edu> wrote:
> The line
>   (date-day quando)99
> looks pretty suspicious; with the 99 there, the first branch of the
> enclosing 'if' expression returns 8 values but the second branch returns 7
> values.

Yes, that was the source of the error (a mistake due to me pressing
the Num Lock key inadvertently).

What had me stumped is that DrRacket gives no hint about the location
of the error.  Not even the right file!

Posted on the dev mailing list.