bug#6465: Error during redisplay: (error No match 4 in highlight (4 font-lock-warning-face))

[Chong Yidong]

Stefan Monnier <monnier@IRO.UMontreal.CA> writes:

>>> I can see it on the emacs-23 branch.
>
> Thos things are trivial to solve: add a `lax' argument to the `4'
> font-lock rule.

Adding a `lax' argument led to an infloop (Bug#6343), because of the way
log-edit-match-to-eoh works.