+# Figure out whether to use xloadimage, xli, or xv.
+pick_displayer() {
+ displayer=
+ for prog in xloadimage xli xv ; do
+ IFS=:
+ for p in $PATH; do
+ IFS=
+ if [ "$p" = "" ]; then p=. ; fi
+ if [ -x $p/$prog ]; then
+ displayer=$prog
+ break 2
+ fi
+ done
+ done
+
+ if [ "$displayer" = "xloadimage" ]; then
+ displayer_args="-quiet"
+ displayer_win_args=""
+ displayer_root_args="-onroot"
+ elif [ "$displayer" = "xli" ]; then
+ displayer_args="-quiet"
+ displayer_win_args=""
+ displayer_root_args="-onroot -center -border black"
+ elif [ "$displayer" = "xv" ]; then
+ displayer_args="-quick24"
+ displayer_win_args="-geom +0+0"
+ displayer_root_args="-root -rmode 5 -noresetroot -rfg black -rbg black -viewonly"
+ else
+ echo "$0: neither xli nor xv found on \$PATH"
+ exit -1
+ fi
+}
+