[BISECTED] Busybox sort regression

[Aaro Koskinen]

Hi,

Current busybox git breaks glibc builds because of "sort" regression.
Bisected to:

commit 8aa7cf305ba5133721aa9852b398cbf1867fc857
Author: Denys Vlasenko <vda.linux at googlemail.com>
Date:   Sat Sep 19 22:06:40 2015 +0200

    sort: fix -kN,M handling (was including last separator into the comparison)

This breaks scripts/versionlist.awk in the glibc source tree (it calls
external "sort" program). Simplified reproducer:

Try the below input:

----->8-----
GLIBC_2.1
GLIBC_2.1.1
GLIBC_2.2
GLIBC_2.2.1
GLIBC_2.10
GLIBC_2.20
GLIBC_2.21
----->8-----

with "sort -u -t. -k 1,1 -k 2n,2n -k 3".

Output with old busybox: same as input

Output with current (broken) busybox:

----->8-----
GLIBC_2.1
GLIBC_2.10
GLIBC_2.1.1
GLIBC_2.20
GLIBC_2.2.1
----->8-----

A.