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Re: grep bug?
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From: |
Andreas Schwab |
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Subject: |
Re: grep bug? |
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Date: |
Tue, 15 Mar 2005 11:48:58 +0100 |
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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.
--
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
- grep bug?, Котельников Михаил, 2005/03/15
- Re: grep bug?,
Andreas Schwab <=