bug#22655: grep-2.21 (and git master): --null-data and ranges work in an odd way (-P works fine)

[Ulrich Mueller]

>>>>> On Sat, 20 Feb 2016, Jim Meyering wrote:

> I have fixed the regex-oriented problem with the attached patch [...]

I confirm that this patch (applied to sys-apps/grep-2.23 in Gentoo)
fixes the problem for me.