Try the following: 1) M-x toggle-debug-on-quit (so that it's enabled) 2) Follow your instructions below 3) When it's stuck, do C-g to stop it trying to load the file. Just so you know, there's also a dedicated mailing list for the Haskell mode in Emacs; see here for more information: http://projects.haskell.org/haskellmode-emacs/ aditya siram <aditya.siram@gmail.com> writes:

Hi all, I have a reproducible bug in Emacs' Haskell mode where Emacs gets stuck in an endless loop. I am using GNU Emacs 23.0.93.1. To reproduce: 1. Use a bad Language pragma eg. {-# LANGUAGE FlexibleTypes #-} 2. Load a GHCI instance with C-c C-l. GHCI outputs the following error: unsupported extension: FlexibleTypes 3. Fix the pragma: {-# FlexibleInstances -#} 4. Try to load the file again with C-c C-l and Emacs gets stuck.

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