Re: master 6d6bf46 2/2: Make dired-do-compress work for *.tar.gz files

[Paul Eggert]

On 10/13/2015 11:28 AM, Glenn Morris wrote:
> > -  '(("\\.gz\\'" "" "gunzip")
> > >+  '(("\\.tar\\.gz" "" "tar" "-zxvf")
> Missing anchor.
>
> > >+    ("\\.gz\\'" "" "gunzip")
> > >      ("\\.tgz\\'" ".tar" "gunzip")
> > >      ("\\.Z\\'" "" "uncompress")
> This makes ".tar.gz" and ".tgz" be treated differently.
> Isn't that a little odd?

Also, not every 'tar' has the -z option.  Emacs should use -z only after 
it's verified that the installed 'tar' supports -z.