Re: Request for enhancement: Scrolling (etc.) in incremental search.

[Richard Stallman]

    The entire new feature is enabled by a customization switch
    (isearch-allow-scroll).  I set it enabled in my patch, but it could
    (should?) be disabled by default.

I have no objections to it if it is disabled by default.

    Were you thinking of something like
    (define-key isearch-mode-map "\M-s" 'isearch-toggle-scrolling), analogous
    to isearch-toggle-case-fold?

I don't like the idea of stealing yet another command.
I would just make a user option to turn this on and off.