Backspace, delete, etc. don't work in ghci in HEAD

$ ghci
GHCi, version 6.9.20080912: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer ... linking ... done.
Loading package base ... linking ... done.
Prelude> a^? [RET]
<interactive>:1:3: lexical error at character '\DEL'

When I pressed my Backspace key, the ^? showed up. When I pressed Delete, ^[[3~ showed up and ghci apparently thought I'd typed an '\ESC'. Arrow keys didn't work either (also seemed to be mapped to '\ESC' and Ctrl-U seemed to send a '\NAK'. However, when I hit Ctrl-Z to suspend ghci and then brought it back to the foreground, all the keys started working.

• everything works fine if I start ghci in a shell in emacs, instead of in an xterm (in the latter, $TERM=xterm
• emacs sets $TERM to "dumb", so I tried executing declare -x TERM=dumb and then starting ghci in an xterm, but the keys still didn't work
• declaring TERM as vt100 didn't work either.
• Ubuntu 7.10 with xmonad (I think 0.3), if that helps.

Trac metadata

Trac field	Value
Version	6.9
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	GHCi
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture	x86