ref: 5f7a6b7ea3c4ae1b51beffe3309e9b6b0491e71f
dir: /sys/src/libmp/port/reduce/
O=$1 shift objtype=$1 shift ls -p ../$objtype/*.[cs] >[2]/dev/null | sed '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