Re: include clause in interactive command

[Tassilo Horn]

Heime via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org> 
writes:

> A mistake.  I am referring to require.
>
> For instance, this will call require everytime the function is called
> interactively.  Should one call the require only once and avoid an
> interactive function from calling a require command each time?
>
> (defun feruler ()
>   (interactive)
>
>   (require 'ruler-mode)
>   (set-face-attribute 'ruler-mode-current-column nil
>     :background "#ff4500" :foreground "#ffffff"))

That's no problem, nothing will happen if it's already loaded (as
indicated by the `require' docs).  It can be suitable in cases where
your program/mode usually doesn't use ruler-mode but only this or some
interactive commands like feruler use it.  In that case, ruler-mode is
only loaded when it's actually used/needed.

Bye,
Tassilo