github.com/benhoyt/goawk@v1.8.1/testdata/gawk/datanonl.awk (about)

     1  # example program from alex@bofh.torun.pl
     2  BEGIN { IGNORECASE=1 }
     3  /\w+@([[:alnum:]]+\.)+[[:alnum:]]+[[:blank:]]+/ {print $0}