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Why emacs touches read-only file?

From: Daniel
Subject: Why emacs touches read-only file?
Date: 18 Apr 2007 11:20:22 -0700
User-agent: G2/1.0

Hi all,

1. Create a file with permission of 444 (read-only) file.
2. Open the file using emacs.


My emacs open the read-only file as writable buffer. Also, I can
modify it and save it. (AMAZING, emacs IGNORES unix file system. WOW.)

What happened to the emacs, and how it works properly (open files as
read-only if it is read-only, and as writable if it is writable.)

Thank you,


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