Strange interaction with stream evaluation and define-syntax?

[Stephen Peters <portnoy at portnoy dot org>]

I think this might be a bug, but I wanted to make sure that I'm not
doing something boneheaded.  Using a short Java program
(TestKawa.java, attached) which gets an input stream (test-kawa.scm,
attached) and executes it, I get NullPointerExceptions when executing
a defined macro:

rogue:~> java TestKawa
java.lang.RuntimeException: invalid syntax in eval form:
<unknown>:2:2: evaluating syntax transformer 'test-ds' threw java.lang.NullPointerException

	at kawa.lang.Eval.evalBody(Eval.java:82)
	at kawa.lang.Eval.evalBody(Eval.java:38)
	at kawa.standard.Scheme.eval(Scheme.java:753)
	at TestKawa.main(TestKawa.java:12)


Evaluating the test-kawa.scm in a kawa.repl loop, however, works fine:

rogue:~> java kawa.repl test-kawa.scm
Done.

Any idea what I'm doing wrong?

Attachment: TestKawa.java
Description: TestKawa.java

Attachment: test-kawa.scm
Description: test-kawa.scm

-- 
Stephen L. Peters                                  portnoy@portnoy.org
  GPG fingerprint: A1BF 5A81 03E7 47CE 71E0  3BD4 8DA6 9268 5BB6 4BBE
     "Poodle: The other white meat." -- Sherman, Sherman's Lagoon