[plt-scheme] 3.99.0.20-svn25mar2008 [3m]: spurious debugging output?

Hi Matthias,

On Wed, Mar 26, 2008 at 08:10:42AM -0400, Matthias Felleisen wrote:
> 
> 
> I couldn't reproduce this with a drscheme downloaded early afternoon  
> (eastern). Could you describe what you did after you started drscheme?

Hmm.  Open Recent files... Pick top-level program file.  Press
Run button.

Weirdness doesn't happen for 3.99.0.12, but does for .20.

Trying it again, now, I find that the Check Syntax button
produces the same debug output, but does so in a console window,
after the following warning:
WARNING: open-input-file: cannot open input file: "/Users/andrew/Library/PLT Scheme/3.99.0.20/doc/typed-scheme/out.sxref" (No such file or directory; errno=2)
That's probably something different...

I'll see if I can whittle down a minimal example that
demonstrates the problem....

OK, this seems to demonstrate the same sort of output (for both
Check Syntax and Run), without extraneous dependencies:

#lang scheme

(define (data-set d)
  (map
   (match-lambda
     ((list 'param (list-no-order (list 'row row) (list 'col col) (list 'value value) _ ...))
      (list row col value))
     ((list 'path (list-no-order (list 'relative rel) _ ...) path)
      (list rel path))
     ((list 'string (list-no-order (list 'id id) _ ...) s)
      (list id s)))
   d))

That example runs with no output (since nothing is actually
being called, just defined) in 3.99.0.12, but produces some
list output in 3.99.0.20.

Before getting this far, I was worried about some of the
libraries that I was require'ing.  My main worry is xml/main.ss,
since that doesn't seem to be documented in the 3.99 series.  I
hope it doesn't go away: it's very useful.  Doesn't seem to be a
problem in this instance, though.

Cheers,

-- 
Andrew