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From: Zdenek Kabelac <zkabelac@redhat.com>
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Date: Mon, 18 Dec 2017 23:43:57 +0100
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Subject: Re: [linux-lvm] lvm filter regex format
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To: matthew patton <pattonme@yahoo.com>, LVM general discussion and development <linux-lvm@redhat.com>

Dne 18.12.2017 v 19:53 matthew patton napsal(a):
>>  =C2=A0  https://github.com/jthornber/lvm2-ejt/blob/master/libdm/regex/p=
arse_rx.h
>  =20
> not to be ungrateful but why on earth would one NOT use the glibc standar=
d regex library? Nobody cares about pointless optimization. Surprises like =
"well, we only implemented most of the spec" are what drives people nuts!
>=20
> I agree this particular length-based match is rather odd but there are pl=
enty of useful examples I am sure that could benefit from {x,y} notation.


Such code was actually written long time ago - but since the syntax of=20
standard glibc  regex accepts slightly different strings - it would be an=20
incompatible change - so it's been considered now worth breaking the=20
compatibility at that time...


Regards

Zdenek