Message-ID: <53F7C19A.506@arcor.de>
Date: Sat, 23 Aug 2014 00:18:02 +0200
From: Der Tiger <der.tiger.alpine@arcor.de>
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To: Timo Teras <timo.teras@iki.fi>
CC: Jeff Pohlmeyer <yetanothergeek@gmail.com>, 
 Alpine <alpine-devel@lists.alpinelinux.org>
Subject: [alpine-devel] Re: Busybox diff / grep oddities
References: <CAEuRe+3fb1Xz-+DJzPth2uJP6XaGjDWMwLmcbnggv_c89bskOQ@mail.gmail.com>	<53F75FF0.6050305@arcor.de> <20140823004905.03159b08@vostro>
In-Reply-To: <20140823004905.03159b08@vostro>
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>>> Recursive diff succeeds without trying?
>>>   busybox diff -rq /bin /etc
>>>   echo $?
>> Actually, it does what it's supposed to do with BusyBox 1.21.1 on
>> Alpine 2.7.9.
> Not sure about this... but.
The given example works with BusyBox 1.22.1 on 3.0.1 just as well.

> Alpine 3.0+ use musl implementation of regular expressions in busybox.
There we go: grep 'ab\+c' certainly fails on 3.0, while grep 'abb*c' is
POSIX and therefore working fine.

Tiger


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