tmp=`mktemp`
trap "rm -f $tmp $tmp.jpg" HUP PIPE INT QUIT TERM EXIT
-jpegtran -optimize -progressive -perfect -copy all "$1" > $tmp.jpg
-cjxl $tmp.jpg "${1%.*}.jxl" --distance=0 --effort=9 --brotli_effort=11 --lossless_jpeg=1
-[ -s "${1%.*}.jxl" ]
-touch -r "$1" "${1%.*}.jxl"
+src="$1"
+shift
+jpegtran -optimize -progressive -perfect -copy all "$src" >$tmp.jpg
+cjxl $tmp.jpg "${src%.*}.jxl" $@ --distance=0 --effort=9 --brotli_effort=11 --lossless_jpeg=1
+[ -s "${src%.*}.jxl" ]
+touch -r "$src" "${src%.*}.jxl"