Re: table.el

[Richard Stallman]

    For example, if the DEFAULT-VALUE parameter is nil but the
    history is not, we should set DEFAULT-VALUE to the car of the
    history and add (default <bla>) to the prompt.  Obviously
    I haven't thought this through yet.

I think change would cause problems.  Commands that don't specify a
history list, and use the default history list, sometimes want no
default value.

If the command specifies a history list, it must give an arg for the
default value; if the programmer specified nil for the default value,
he must have done it deliberately.