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Date: Fri, 17 Jul 2015 03:44:00 -0000
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Subject: Re: --line-regexp option with null data
From: Steven Penny <svnpenn@gmail.com>
To: cygwin@cygwin.com
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On Thu, Jul 16, 2015 at 9:04 PM, John Hein wrote:
> cygwin grep is detecting the input as binary which seems to be
> overriding the 'match the whole line' behavior of --line-regexp.  Get
> rid of --quiet to see that.

It appears to be intended behavior starting with version 2.21:

> If a file contains data improperly encoded for the current locale,
> and this is discovered before any of the file's contents are output,
> grep now treats the file as binary.

http://savannah.gnu.org/forum/forum.php?forum_id=8152

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