Re: "Text is read-only"... except it isn't... or shouldn't be

[ken]

On 05/14/2013 04:42 PM Eli Zaretskii wrote:
> > Date: Tue, 14 May 2013 16:39:59 -0400
> > From: ken <gebser@mousecar.com>
> > CC: help-gnu-emacs@gnu.org
> >
> > On 05/14/2013 09:39 AM Eli Zaretskii wrote:
> > > > Date: Tue, 14 May 2013 08:22:00 -0400
> > > > From: ken <gebser@mousecar.com>
> > > > CC: Eli Zaretskii <eliz@gnu.org>, help-gnu-emacs@gnu.org
> > > >
> > > > [...] overly simplistic strategy for determining a file type merely
> > > > by looking at the filename extension, especially when this can be
> > > > more suitably and accurately and intelligently accomplished by
> > > > determining a file's magic number as the Linux "file" utility does.
> > >
> > > Emacs does look at the magic signature, see magic-mode-alist.
> >
> > They why didn't it see that my file was (obviously) a text file and not
> > an image file?
>
> I have no idea, and won't have one, unless you disclose the name of
> that file.

list.gif

Would it make a difference if the basename (without the extension) were 
named something else?