[darcs-users] Haskeline 0.4 support?

[Trent W. Buck]

I tried to test Haskeline support yesterday.  Since "cabal install
haskeline" gave me 0.4.something, I tried to use that by loosening the
version constraint in darcs.cabal.

I used cabal configure -f'haskeline <other flags>', so IIUC it did link
against haskeline.  Certainly cabal configure complained about not
having haskeline 0.3 until I loosened the constraint.  Darcs built
successfully (with "cabal build").

Now, maybe I've misunderstood what haskeline is supposed to provide.  I
expect it to provide a line editor similar to what the C libraries
libreadline and libedit provide in e.g. bash, or what the rlwrap program
provides for arbitrary stdio programs.

For example, I expect typing Control+B or the left arrow to move the
cursor back one character when I'm at the "What is the patch name?"
prompt.  But it just inserts the control/escape codes on the end of the
line -- the same behaviour as I get without haskeline.

Is this because I used haskeline 0.4, or have I misunderstood what
haskeline is supposed to do, or have I done something else wrong?