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From: Stefan Monnier <monnier@iro.umontreal.ca>
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Subject: Re: How to disable file extension auto-detection or auto-action?
Date: Tue, 22 Mar 2011 21:47:18 -0400
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> (add-to-list 'auto-mode-alist '("\\.bz2$" . fundamental-mode))
> (it works for me), the other regexp was not correct...

While $ will work, \\' is better since it only matches the end of the
file name, whereas $ also matches the end of a line within a multiline
file names.


        Stefan