`interactive-haskell-mode` should not bind C-c c

[ivarru]

This now calls haskell-process-cabal, but the elisp manual clearly states (in section D.2):

• Don't define C-c LETTER' as a key in Lisp programs. Sequences consisting ofC-c' and a letter (either upper or lower case) are
  reserved for users; they are the only sequences reserved for
  users, so do not block them.

It seems this was introduced in a0dd740.

[purcell]

Yes, specifically (define-key map (kbd "C-c c") 'haskell-process-cabal).

I agree that this is a bad idea. Care to suggest an alternative binding?

[ivarru]

What about C-c C-x?

[hvr]

Fyi, here's a relevant quote from the Elisp Info manual:

The key sequences bound in a major mode keymap should usually start with C-c, followed by a control character, a digit, or {, }, <, >, : or ;. The other punctuation characters are reserved for minor modes, and ordinary letters are reserved for users.

A major mode can also rebind the keys M-n, M-p and M-s. The bindings for M-n and M-p should normally be some kind of “moving forward and backward”, but this does not necessarily mean cursor motion.

It is legitimate for a major mode to rebind a standard key sequence if it provides a command that does “the same job” in a way better suited to the text this mode is used for. For example, a major mode for editing a programming language might redefine C-M-a to “move to the beginning of a function” in a way that works better for that language.

It is also legitimate for a major mode to rebind a standard key sequence whose standard meaning is rarely useful in that mode. For instance, minibuffer modes rebind M-r, whose standard meaning is rarely of any use in the minibuffer. Major modes such as Dired or Rmail that do not allow self-insertion of text can reasonably redefine letters and other printing characters as special commands.

[chrisdone]

This is just a personal keybinding that carried over into the mode. Choose a keybinding you like.