Create a command-history with timestamps?

[Michael T Decerbo]

The command M-x command-history-mode puts you in a buffer with the
current command history, one command to a line.

I would like to create a similar command that creates such a history
with a timestamp at which each command was performed, perhaps as a
comment.

Is this likely to be simple or complicated? Can anyone suggest a
starting point?


-- 
Mike --- mike@mit.edu