running mm-destroy-parts when (mm-display-part handle) returns inline

[Masatake YAMATO <jet@gyve.org>]

Dear Sir,

I'm trying url-mm-callback in the url package with 
emacs-w3m web browser.

When (mm-display-part handle) returns inline, follwoing
code sequence are executed: 

     	(display-buffer (current-buffer))
	(mm-destroy-parts handle)

As the result, the user see nothing.
The inline handler renders the result on the (current-buffer).
The rendering result is destroyed by (mm-destroy-parts handle).

I don't know whether this is the special case of emacs-w3m or not.
However, the attached patch will fix my problem. I think the impact
of this patch is small; and the patch helps all inline handlers
which manages rendered items on the (current-buffer).

BTW, is there any document about the url package?

Regards,
Masatake YAMATO

2004-11-12  Masatake YAMATO  <jet@gyve.org>

	* url.el (url-mm-callback): Call `mm-destroy-parts'
	when the buffer is killed.


Index: lisp/url/url.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/url/url.el,v
retrieving revision 1.6
diff -u -r1.6 url.el
--- lisp/url/url.el	16 Oct 2004 15:02:46 -0000	1.6
+++ lisp/url/url.el	11 Nov 2004 18:05:40 -0000
@@ -207,7 +207,10 @@
 	    (message "Viewing externally")
 	    (kill-buffer (current-buffer)))
 	(display-buffer (current-buffer))
-	(mm-destroy-parts handle)))))
+	(add-hook 'kill-buffer-hook 
+		  `(lambda () (mm-destroy-parts ',handle))
+		  nil
+		  t)))))
 
 (defun url-mm-url (url)
   "Retrieve URL and pass to the appropriate viewing application."