ref: 5c1feb0ef0b795e5de71e956f9ccddcd5c4b7f21
dir: /sys/src/libc/port/reduce/
O=$1 shift objtype=$1 shift ls -p ../$objtype/*.[cs] >[2]/dev/null | sed 's/..$//;s/^/^/' > /tmp/reduce.$pid # # if empty directory, just return the input files # if (! ~ $status '|') { echo $* rm /tmp/reduce.$pid exit 0 } echo $* | tr ' ' \012 | grep -v -f /tmp/reduce.$pid | tr \012 ' ' rm /tmp/reduce.$pid