Re: patch: handle PS/PDF in Gnus

[David Reitter <david.reitter@gmail.com>]

On 6 Jul 2007, at 16:34, David Kastrup wrote:
>> 	* mailcap.el (mailcap-mime-data): handle Postscript and PDF on  
>> Mac OS
>> 	  X.
>
> Why wouldn't one want to leave the handling to what is written in
> /etc/mailcap?

/etc/mailcap doesn't exist on OS X. Mapping from file types to  
handler application is done via the LaunchServices database, which is  
most easily accessed via the "open" tool:

  (viewer . "open %s")
+      (type . "application/pdf")

As for the patch, calling pdf2ps and pdftops is not a good idea since  
this stuff isn't installed unless the user explicitly installs them  
(e.g. Ghostscript, which is mostly useless on the Mac).

What works, however, is to just use "open" with the PS files and let  
LaunchServices deal with it. Current systems come with a preview.app  
(which is what is normally launched for PDFs) that will automatically  
convert PS to PDF and display that.