Allow search for previous expressions in interactive-mode

[rpglover64]

Basically, I would like C-r in haskell-interactive-mode to behave like C-r in ghci.

This is particuarly relevant after a C-c C-k.

[chrisdone]

Yeah, C-r is cool.

[ivan-m]

If nothing else, inf-haskell let you C-r to do a backward search in the buffer, and then hitting Enter would copy that line to the current prompt line.

[chrisdone]

Unlike Comint, SLIME and IELM's M-p are a search if the prompt isn't empty: http://common-lisp.net/project/slime/doc/html/Input-Navigation.html

[rpglover64]

@ivan-m: Right. In some sense, I want the best of inf-haskell and interactive-haskell together. What a wonderful dream.

[chrisdone]

@ivan-m That doesn't help after C-c C-k, though.

[ivan-m]

I suppose not... but the fact that I had to ask emacs what that keybinding did shows that I don't clear my ghci session much :p

[TikhonJelvis]

I would love a reverse command search bound to M-r like comint and the old inferior haskell mode.

[gracjan]

@rpglover64: Common sentiment is that the GHCi buffer should build on comint mode, effectively merging functionality of interactive and inferior modes. There is a lot to get done before this happens. Can you help with this?

[rpglover64]

@gracjan Probably not. 😦 I'm not very knowledgeable in elisp and I have a project for work taking all my time.

[gracjan]

In that case we need to wait for a volunteer.