bug#8968: arc-mode 7z writing support

[Eli Zaretskii]

> From: Jason Rumney <jasonr@gnu.org>
> Cc: Juri Linkov <juri@jurta.org>,  8968@debbugs.gnu.org
> Date: Sat, 09 Jul 2011 19:34:59 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > I don't have a definitive answer.  All I know is that arc-mode could
> > not handle certain archives that I could handle with a 7z.exe
> > downloaded for comparison.  I then researched this issue and found out
> > that those archives used a newer format that the Free Software
> > variants of 7z did not support.
> 
> Were these archives .rar archives?

No, they were "*.7z".