from preamble:
"Change Set: SyntaxErrorsOnFileIn
Date: 14 October 2001
Author: Stephen Pair
BugFixing Party @ Camp Smalltalk OOPSLA 2001. Fixes bug report from
Sept 13, 2001:
If you get a syntax error during a fileIn, you should be able to correct
it in the notifier, and then accept the corrected code from that window.
If all is well, the method gets defined, and the fileIn continues. But
it doesn't. Instead, you get... NonBooleanReceiver: proceed for truth."!