I wasn't using --noRL. Perhaps that was the problem. Using SVN 457 I get:
$ apl --noRL
13 history lines read from file /home/blake/.apl.history
______ _ __ __ __ ___ ____ __
/ ____// | / // / / / / | / __ \ / /
/ / __ / |/ // / / / / /| | / /_/ // /
/ /_/ // /| // /_/ / / ___ | / ____// /___
\____//_/ |_/ \____/ /_/ |_|/_/ /_____/
Welcome to GNU APL version 1.4 / 8248
Copyright (C) 2008-2014 Dr. Jürgen Sauermann
This program comes with ABSOLUTELY NO WARRANTY;
for details run: apl --gpl.
This program is free software, and you are welcome to redistribute it
according to the GNU Public License (GPL) version 3 or later.
uprefs.raw_cin: '0' at Output.cc:296
uprefs.raw_cin: '0' at Output.cc:296
uprefs.raw_cin: '0' at Output.cc:296
uprefs.raw_cin: '0' at Output.cc:296
uprefs.raw_cin: '0' at Output.cc:296
After that, I get a lot of debug output along with each keystroke.
Thanks.
Blake