Conditional evaluation?

Conditional evaluation?

[Elena]

Hi,

whenever I'm testing a new chunk of Emacs Lisp, I'd like to
conditionally include/exclude it without resorting to "comment-
region". Is using "when" correct?

    (when nil ;; use t to enable evaluation
        (require 'some-package)
        ;; etc.
    )

Or do I need an alternative form to make code evaluate at top level?

Thanks.

Re: Conditional evaluation?

[Pascal J. Bourguignon]

Elena <egarrulo@gmail.com> writes:
> whenever I'm testing a new chunk of Emacs Lisp, I'd like to
> conditionally include/exclude it without resorting to "comment-
> region". Is using "when" correct?
>
>     (when nil ;; use t to enable evaluation
>         (require 'some-package)
>         ;; etc.
>     )

Yes, it works well.


> Or do I need an alternative form to make code evaluate at top level?

There's no #+,  #-, #| reader syntax in emacs lisp, and no way to add
one (easily).


-- 
__Pascal Bourguignon__