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bug#27783: display help instead of pattern search

From: Eric Blake
Subject: bug#27783: display help instead of pattern search
Date: Fri, 21 Jul 2017 10:07:58 -0500
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tag 27783 notabug

On 07/21/2017 02:46 AM, PAYET Matthieu -EXT wrote:
> Hello,
> Grep v2.6.3
>> grep -ri "--help" .
> Displays the help message instead of searching for the requested pattern.

Because you didn't tell grep the options were over.  You want:

grep -ri -- --help

> Same behavior for the pattern "--version"

Ditto for any other pattern with a leading '-' - use -- to tell grep
that you are done with option parsing and to treat the next argument as
a pattern or filename.

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Sorry, but your disclaimer is unenforceable on publicly-archived lists.
Please consider using a personal address to avoid spamming us with your
employer's legalese.

Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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