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Re: grep bug?

From: Andreas Schwab
Subject: Re: grep bug?
Date: Tue, 15 Mar 2005 11:48:58 +0100
User-agent: Gnus/5.110002 (No Gnus v0.2) Emacs/22.0.50 (gnu/linux)

Котельников Михаил <address@hidden> writes:

> Hi.
>       echo "abc "|egrep -o "[a-z]*"
>       result: 'abc'
> right
>       echo " abc"|egrep "[a-z]*"
>       result: 'abc '

ITYM ' abc'.

> right
>       echo " abc"|egrep -o "[a-z]*"
>       result: none
> why?

It matches the empty string before the space.


Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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