factor

Author	SHA1	Message	Date
Doug Coleman	72080fda4a	construct-boa -> boa construct-empty -> new	2008-04-13 15:06:27 -05:00
Slava Pestov	373a88a77a	Fix UI hang, add if-box combinator	2008-02-29 19:10:30 -06:00
Slava Pestov	a5503782d7	Fix hang when clicking presentations in the walker; improve traceback widget	2008-02-27 17:15:52 -06:00
Slava Pestov	84016a36c0	Regression fixes	2008-02-25 19:37:43 -06:00