• Simon Marlow's avatar
    Add history/trace functionality to the GHCi debugger · e1b89960
    Simon Marlow authored
    The debugger can now log each step of the evaluation without actually
    stopping, keeping a history of the recent steps (currently 50).  When
    a (real) breakpoint is hit, you can examine previous steps in the
    history (and their free variables) using the :history, :back and
    :forward commands.
GHC.hs 67.8 KB