I want to clear the ghci screen of the haskell-mode,
I used erase-buffer in emacs shell, and I works, but when I do so with ghci inside emacs, This message appears:
Text is read-only
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did you try using `comint-clear-buffer` bound to `C-c M-o` ? this will work for all comint based interactive processes. – Chakravarthy Raghunandan Feb 06 '17 at 03:45
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Error: "Wrong type argument: processp, nil" – T.Magdy Feb 06 '17 at 06:14
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I've found a solution. (C-c C-k) == M-x haskell-interactive-mode-clear – T.Magdy Feb 06 '17 at 06:15
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Ah yes, that's the same shortcut I use for `intero` repl :) I forgot it worked for haskell interactive mode as well. – Chakravarthy Raghunandan Feb 06 '17 at 06:35
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@T.Magdy: please post your solution and accept it so that we can mark this post as answered. – Dan Feb 06 '17 at 19:42
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Sure, I will @Dan – T.Magdy Feb 06 '17 at 19:50
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In haskell-mode, C-c C-l calls haskell-process-load-or-reload, and you go into a sub-mode called haskell-cabal-mode-map.
In that mode there is a command haskell-interactive-mode-clear to clear the ghci buffer. (erase-buffer does not work, because the buffer is read-only so you cannot erase it)
So You can map haskell-interactive-mode-clear like that:
(eval-after-load 'haskell-cabal '(progn
(define-key haskell-cabal-mode-map (kbd "C-c C-k") 'haskell-interactive-mode-clear)