ref: d1b9c31b4a1da4c95da493ec18c0ec5085694785 dir: /cmd/awk.rc/
#!/bin/rc rfork e fn check{ expected=$1 shift if(~ `{$*} $expected){ status='' } if not{ >[1=2] echo $* '!=' $expected exit 'fail' } } check 0 awk 'BEGIN{print length($1)}'