text/html; firefox %s
application/pdf; { set -m \; /bin/mv -T %s %s.mv \; ( evince %s.mv \; /bin/rm %s.mv \; ) & }
image/*; eog %s ;
application/x-gunzip;   gzcat; copiousoutput
text/x-diff;  cat %s | colordiff;copiousoutput
text/x-patch; cat %s | colordiff;copiousoutput