Re: [Haskell-cafe] Haskell-mode 2.4

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"Johan" == Johan Tibell writes:

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Emacs is completely frozen until I press C-g and then it goes back to normal (without loading the file). Here's the back trace:

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Debugger entered--Lisp error: (quit) accept-process-output(#<process haskell>) (and (not (re-search-forward comint-prompt-regexp nil t)) (accept-process-output proc))

So it seems to be waiting for the prompt but can't find it. If you look at the buffer containing the interactive process, is there a prompt there? If not, can you try and figure out why not? If yes, can you try and figure out why it is not recognized by the comint-prompt-regexp?

I had the following in my .ghci to make GHCi's prompt less verbose:

:set prompt "> "

Removing that solves the problem.

You can also add the following to your .emacs: (add-hook 'inferior-haskell-mode-hook (lambda () (set (make-local-variable 'comint-prompt-regexp) "^> "))) Or some fancier regexp (the default is "^\\*?[A-Z][\\._a-zA-Z0-9]*\\( \\*?[A-Z][\\._a-zA-Z0-9]*\\)*> "). Stefan