[PATCH] Keep expected behaviour for [a-z] and [A-z] (Bug 23393).

[Florian Weimer]

On 07/25/2018 11:35 PM, Carlos O'Donell wrote:
> I have committed only the most conservative fix for this issue, which is
> to deinterlace the lower and upper case ranges.
> 
> I think we are too late to commit rational ranges, and we can do that in
> 2.29 when it opens. Right now I want to remove the blocker that is causing
> regressions for en_US.UTF-8 scripts that use [a-z], and [A-Z].

How is this the most conservative fix, relative to glibc 2.27 upstream?

[a-z] still matches lots of non-ASCII characters, which it did not before.

When I meant that we left regression-fixing territory, I was talking 
about the locales which had iso14651_t1_common customizations.

Thanks,
Florian