Cross Reference: /src/bin/ed/test/s3.t

      1  1.1  alm a
      2  1.1  alm hello/[]world
      3  1.1  alm .
      4  1.1  alm s/[/]/ /
      5  1.1  alm s/[[:digit:][]/ /
      6  1.1  alm s/[]]/ /
      7