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RE: How to refresh a buffer?

From: Drew Adams
Subject: RE: How to refresh a buffer?
Date: Mon, 5 Feb 2007 09:44:37 -0800 
> I opened a file in Emacs and found it was read-only. I use the
> terminal command "chmod +w file.cpp" to make it writable. After I
> return to Emacs the file is still read-only. I have to close this file
> and re-open it. How to refresh this buffer?

M-x revert-buffer
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