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bug#17640: grep with -m reads the entire input

From: Paul Eggert
Subject: bug#17640: grep with -m reads the entire input
Date: Fri, 30 May 2014 00:08:09 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0

With grep 2.18, the -m option would cause grep to stop reading input
after printing the requested number of matching lines.  With version
2.19, grep reads the entire input before exiting.

Can you give an example of the failure? What platform are you running on? I couldn't reproduce the problem on Fedora 20 x86-64. Here's how I tried:

$ seq 1000000 >million
$ (grep -m1000 0 | wc -l; wc -l) <million

and these numbers look correct to me.

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