Re: mailcap-parse-mailcaps does regexp-quote MIME types

[Katsumi Yamaoka <yamaoka@jpl.org>]

Katsumi Yamaoka wrote:
> I have this entry in my ~/.mailcap file:

> application/vnd.ms-powerpoint; /cygdrive/c/Program\ Files/Microsoft\ Office/Office12/POWERPNT.EXE "`cygpath --windows %s`"

> `mailcap-parse-mailcaps' parses it and makes an entry in
> `mailcap-mime-data' as:

> (("application"
>   ("vnd\\.ms-powerpoint"
>    (viewer . "/cygdrive/c/Program\\ Files/Microsoft\\ Office/Office12/POWERPNT.EXE \"`cygpath --windows %s`\"")
>    (type . "application/vnd\\.ms-powerpoint"))
>   ))

> Note that the MIME type is regexp-quote'd.  Because of this POWERPNT
> doesn't run automatically when playing such parts.

I was confused for something or half asleep.  Now Gnus plays ppt
attachments automatically with no mailcap.el modification.  Sorry
for the noise.

> May I install
> the patch attached below?  Otherwise is there any deep reason r-q
> is indispensable?

> --- mailcap.el~	2011-04-05 05:00:09.725625000 +0000
> +++ mailcap.el	2011-08-23 10:41:18.265625000 +0000
> @@ -472,3 +472,3 @@
>  		 ((= (point) save-pos) ".*")
> -		 (t (regexp-quote (buffer-substring save-pos (point)))))))
> +		 (t (buffer-substring save-pos (point))))))
>  	(skip-chars-forward " \t")

I realized `regexp-quote' is necessary since
`mailcap-possible-viewers' runs `string-match' to test if it
matches that of an attachment.  Therefore all the MIME subtypes
listed in the initial value of `mailcap-mime-data' should also
be regexp-quote'd.  I've fixed it.