text/html; firefox -new-tab %s & sleep 5; test=test -n "$DISPLAY";
#
# for mutt to view html e-mails
# text/html; w3m -I %{charset} -T text/html; copiousoutput
text/html; html2text %s; copiousoutput

application/pdf; mupdf %s; copiousoutput
image/*; geeqie %s;
application/*; xdg-open %s