bug#5475: Archives with filenames with square brackets

[Eli Zaretskii <eliz@gnu.org>]

> From: Juri Linkov <juri@jurta.org>
> Cc: cyd@stupidchicken.com,  5475@debbugs.gnu.org
> Date: Sun, 31 Jan 2010 23:59:40 +0200
> 
> When I try to set `archive-zip-extract' to ("7z" "x" "-so") it puts some
> unnecessary information (header lines, progress indication, etc.)  to
> the output buffer, because it outputs this to stderr.  With the following
> change, stderr goes to /dev/null, but there is no chance to see possible errors
> (this patch is for demonstration only, not to be installed):
> 
> === modified file 'lisp/arc-mode.el'
> --- lisp/arc-mode.el	2010-01-28 20:06:36 +0000
> +++ lisp/arc-mode.el	2010-01-31 21:48:51 +0000
> @@ -1080,7 +1080,7 @@ (defun archive-extract-by-stdout (archiv
>    (apply 'call-process
>  	 (car command)
>  	 nil
> -	 t
> +	 '(t nil)
>  	 nil
>  	 (append (cdr command) (list archive name))))
>  
> To process 7z in the correct branch, the following patch is needed,
> where any values other than pkunzip/pkzip are processed by
> archive-extract-by-stdout instead of archive-*-extract,
> where "unzip" needs to quote its filenames.
> 
> So I propose to install the following patch, and add more
> changes for 7z processing after feature freeze.

Thanks.  I'm not sure we need to support 7z, I just tried it to see if
other unzip programs expand wildcards by default like "unzip" does.