SPUG: minimal unmatching regex

[Ingy dot Net]

I can't resist the urge to out golf the Damian.

I can't find any input that matches:

    /.^/

Then again maybe my smaller submission fails to be comprehensible. I can't
seem to grok it myself, but I'm sure Damian can. :)

Ingy

PS If you look at   /.^/   at the proper angle, in the proper light, under
the influence of the proper drugs, it kinda looks like an emoticon of a
certain Aussie I know... :P

On Tue, Aug 18, 2009 at 10:37 PM, Damian Conway <damian at conway.org> wrote:

> > What's the smallest (comprehensible) regex that's guaranteed to fail
> against
> > all input?
>
> /(?!)/
>
> "Look ahead and *don't* find...nothing".
> Oops! Too late. You already found nothing. ;-)
>
> Damian
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