application/pdf: /usr/bin/evince '%s'; test=test -n "$DISPLAY"
application/postscript: /usr/bin/evince '%s'; test=test -n "$DISPLAY"
image/x-eps: /usr/bin/evince '%s'; test=test -n "$DISPLAY"
image/eps: /usr/bin/evince '%s'; test=test -n "$DISPLAY"
image/png: /usr/bin/feh '%s'; test=test -n "$DISPLAY"
image/jpeg: /usr/bin/feh '%s'; test=test -n "$DISPLAY"
image/gif: /usr/bin/feh '%s'; test=test -n "$DISPLAY"
image/tiff: /usr/bin/feh '%s'; test=test -n "$DISPLAY"