There are other interactive applications that repeat the previous command when enter is pressed, e.g. gdb. 'bzr shell' as far as I know does not intend to be a bash clone. I've asked Aaron (upstream) for details about this behaviour.
-- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org