I'd like to write a wrapper for growlnotify that growls output from cowsay.
$ cowsay 'this is cowsay'
________________
< this is cowsay >
----------------
\ ^__^
\ (oo)\_______
(__)\ )\/\
||----w |
|| ||
I've hunted through all the available Growl themes & appearance options but can't work out how to change the font to fixed-width, so the ASCII-art output from cowsay isn't munged.
Could someone please tell me how to switch the font used by Growl?