ref: 96c2be96e4beaac08d89af4dea8069d9ca1c4b09 dir: /test/t.re1/
/[a-cg-j1-3]/ { print $0 " matches /[a-cg-j1-3]/" } /[^aeiou]/ { print $0 " matches /[^aeiou]/" }