> netawater yahoo.com.cn> wrote:
>

>> I do not want to interactive call a function but call it like pressing
>> a key.

>
> I think you do, you just don't know it yet. :)
>
> You want to do something like thas
>
> (defun do-what-backspace-does ()
> (interactive)
> (call-interactively (key-binding "\C-?")))
>

>> my aim is to binding a funtion to tab key in every mode: if cursor is at
>> the end of word then call M-TAB's function, else call TAB's function.

>
> This, however, might not work. Because if you bind your function to
> tab, you might be unable to retrieve the original binding.
>
>
> regards,
> Nikolaj Schumacher