Desperately seeking cvs grep

[computers]

You know, I would love it if someone could implement this...

Usage: cvs grep [-vlR] [grep-options] pattern
   [[-f rev1 | -F date1] [-t rev2 | -T date2]] [files...]
      -v      Verbose format; includes tag information for each file.
      -l      Local directory only, not recursive.
      -R      Process directories recursively.
      -f rev1 Search all revisions after the specified revision.
      -F d1   Search all revisions after the specified date.
      -t rev2 Search all revisions before the specified revision.
      -T d2   Search all revisions before the specified date.

...or if someone could point me to a different revision control system that supports it.

Oh, woe is me. Maybe I'll try and do it myself.