How to disable file extension auto-detection or auto-action?

[Tadeus (Eus) Prastowo]

Hi!

When working on a bug in apt-cacher[1], I needed to read the content
of *.bz2 files that actually were only text files. But, every time I
open a .bz2 file, Emacs sees the extension and does auto-decompression
resulting in an empty buffer.

Is there a way to open a file dumbly without any sort of auto-action?

Thank you.

[1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=618996

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