How do I force emacs to read from disc?

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Article #189629

#189629

From: Peter Craft
Date: Tue, 18 Dec 1990 19:36

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If I spawn a shell from within emacs, and copy a file over one of the files
that I already have an emacs buffer open, and then return to that emacs
buffer, I will still be editing the original file.  If I then write the 
buffer, I will overwrite the file that I just copied.  (did that make sence?)

Anyway, my question is:  How do I tell emacs to reread from disc, rather than
visiting the buffer that it already has open?

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From: craft@uts.amdahl.com (Peter Craft)
Newsgroups: gnu.emacs.help
Subject: How do I force emacs to read from disc?
Message-ID: <21aO02tLf9I501@amdahl.uts.amdahl.com>
Date: 18 Dec 90 19:36:26 GMT
Organization: Amdahl Corporation, Sunnyvale CA
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