ref: 2d24dea30ee375b9f0e0690e544c5feccff26cb8 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)}'