auto-image-file-mode fails for image files inside archives handled by archive-mode

[Joe Wells]

Suppose you have an archive file named

  foo.zip

and inside foo.zip you have a file named

  bar.png

Then when you visit bar.png, auto-image-file-mode has no effect and
you see the raw image data rather than the image.  Ugh.

-- 
Joe

P.S.  Version information:

I'm using the Gentoo ebuild app-editors/emacs-22.0.50_pre20050225
which is based on a CVS snapshot from 2005-02-25.

In GNU Emacs 22.0.50.1 (i686-pc-linux-gnu, GTK+ Version 2.6.8)
 of 2005-08-06 on colinux
Distributor `The Cygwin/X Project', version 11.0.60802000
configured using `configure '--prefix=/usr' '--host=i686-pc-linux-gnu' 
'--mandir=/usr/share/man' '--infodir=/usr/share/info' '--datadir=/usr/share' 
'--sysconfdir=/etc' '--localstatedir=/var/lib' '--build=i686-pc-linux-gnu' 
'--enable-debug' '--program-suffix=.emacs-22.0.50' '--without-carbon' 
'--disable-nls' '--with-x' '--with-xpm' '--with-toolkit-scroll-bars' 
'--with-jpeg' '--with-tiff' '--with-gif' '--with-png' '--with-x-toolkit=gtk' 
'CFLAGS= -march=pentium4 -O2 -pipe' 'build_alias=i686-pc-linux-gnu' 
'host_alias=i686-pc-linux-gnu''