Re: interactive and &optional arguments

[Thorsten Jolitz <tjolitz@gmail.com>]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> sometimes I want a function with &optional args to be interactive, and I
>> wonder if there is a way to, as default action, interactively call the
>> function via M-x without args, except the user does something special -
>> e.g. C-u M-x - and only then ask the user for input?
>
> Just use a (interactive <spec>) where <spec> is not a string but some
> Elisp expression that computes the arguments you want to provide to
> the function.

I see, thanks, its even described in the manual, but somehow I couldn't
relate the dense paragraph to my problem without some external hint.

-- 
cheers,
Thorsten