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bug#9139: 24.0.50; Inappropriate warning: "File no longer exists!"


From: Lars Magne Ingebrigtsen
Subject: bug#9139: 24.0.50; Inappropriate warning: "File no longer exists!"
Date: Sun, 11 Sep 2011 04:52:29 +0200
User-agent: Gnus/5.110018 (No Gnus v0.18) Emacs/24.0.50 (gnu/linux)

Bastien <address@hidden> writes:

> Emacs sends an inappropriate warning message when trying to 
> find a file that isn't on the hardrive but is the filename of 
> a buffer, thus somehow "existing" in Emacs.
>
> To reproduce the problem:
>
> emacs -Q
> C-x f ~/foo.txt
> C-x b bar
> C-x f ~/foo.txt
>
>   => File no longer exists!

Yes, it shouldn't say anything in this instance.

But how?  It's this code in files.el:

                  (cond ((not (file-exists-p filename))
                         (setq nonexistent t)
                         (message "File %s no longer exists!" filename))

Is there something stored in the buffer that's stored if the file once
has existed, but no longer exists?  Let's see...

(visited-file-modtime)
=> (-1 65535)

in foo.txt.  But is that a bug?

The doc string says:

Return the current buffer's recorded visited file modification time.
The value is a list of the form (HIGH LOW), like the time values
that `file-attributes' returns.  If the current buffer has no recorded
file modification time, this function returns 0.

So I think that perhaps is should return 0?
                         
-- 
(domestic pets only, the antidote for overdose, milk.)
  bloggy blog http://lars.ingebrigtsen.no/





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