4 trap "rm -f $tmp $tmp.jpg" HUP PIPE INT QUIT TERM EXIT
7 jpegtran -optimize -progressive -perfect -copy all "$src" >$tmp.jpg
8 cjxl $tmp.jpg "${src%.*}.jxl" $@ --distance=0 --effort=9 --brotli_effort=11 --lossless_jpeg=1
10 touch -r "$src" "${src%.*}.jxl"