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Mail Archives: cygwin/2005/03/09/12:41:09

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Date: Wed, 9 Mar 2005 12:40:53 -0500 (EST)
From: Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: Colin JN Breame <colin AT breame DOT net>
cc: cygwin AT cygwin DOT com
Subject: Re: File losing ownership
In-Reply-To: <200503091711.03207.colin@breame.net>
Message-ID: <Pine.GSO.4.61.0503091236380.18298@slinky.cs.nyu.edu>
References: <200503091711 DOT 03207 DOT colin AT breame DOT net>
MIME-Version: 1.0

On Wed, 9 Mar 2005, Colin JN Breame wrote:

> I have a file such that:
>
> $ ls -l test
> -rw-r--r--  1 Administrators None 6 Mar  9 17:00 test
>
> I open it and save in emacs.
>
> $ ls -l test
> -rw-r--r--  1 colin None 7 Mar  9 17:00 test
>
> Is this a bug?

This is a design "feature" in emacs (and most of the Windows editors as
well).  None of them write files in-place.  What they do is create a copy
of the file with the changes from the editing session.  The inode is also
changed (easy to check), so what you're seeing is a brand new file.  The
old one, IIRC, is renamed to "test~" (I don't use emacs, so can't check).

This, BTW, is one of the reasons you can't use emacs as crontab editor, or
anything else that expects the file to be written in-place.
	Igor
P.S. I think I'm being a bit unfair ("I'm a VIm guy"), and you *can*
configure emacs to write files in-place -- it's just not done by default.
-- 
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