Subject: bug#61514: 30.0.50; sadistically long xml line hangs emacs

From: Stefan Monnier <[email-masked]>
Date: Mon, 20 Feb 2023 10:02:40 -0500

> Indeed.  That's the bug in the bug.  But it's the '+?' repetition which
> causes the "infloop", right?

It's the `+?` which causes the N repetitions of the O(N) time match,
resulting in an O(N²) complexity, I think, yes.

        Stefan