ref: 12517607a5db367cf9a15474f1424759cef1683a dir: rc/harmful/☭cp
#!/bin/rc tar c `' '{diff <{lr -dQ $1 | sort} <{cd $2 && lr -dQ $1 | sort} | sed -n '/^< /s/^< //p'} | @{cd $2 && tar xT}