patch: handle PS/PDF in Gnus

[Sean O'Rourke]

The following patch makes Gnus handle Postscript and PDF
attachments on Mac OS X.  Something similar should probably be
done for a bunch of other attachment types, but these are the
ones I have needed.

/s,
browsing the accumulated diff between his sources and CVS...

Index: mailcap.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/gnus/mailcap.el,v
retrieving revision 1.16
diff -u -r1.16 mailcap.el
--- mailcap.el  21 Jan 2007 02:54:13 -0000      1.16
+++ mailcap.el  6 Jul 2007 15:20:50 -0000
@@ -137,6 +137,11 @@
       (type   . "application/zip")
       ("copiousoutput"))
      ("pdf"
+      (viewer . "open %s")
+      (type . "application/pdf")
+      (test . (eq window-system 'mac))
+      ("print" . ,(concat "pdf2ps %s - | " mailcap-print-command)))
+     ("pdf"
       (viewer . "gv -safer %s")
       (type . "application/pdf")
       (test . window-system)
@@ -157,6 +162,11 @@
       ("print" . ,(concat "pdftops %s - | " mailcap-print-command))
       ("copiousoutput"))
      ("postscript"
+      (viewer . "open %s")
+      (type . "application/postscript")
+      (test . (eq window-system 'mac))
+      ("print" . ,(concat mailcap-print-command " %s")))
+     ("postscript"
       (viewer . "gv -safer %s")
       (type . "application/postscript")
       (test   . window-system)