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Date: Mon, 17 Dec 2018 05:05:48 -0800 (PST)
From: Steven Penny <svnpenn@gmail.com>
Subject: Re: grep 3.0-2 not stripping CRs on Windows
To: cygwin@cygwin.com
References: <35FC3865-8891-4058-86DF-DA5F1DEFAFD4@isc.org>
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User-Agent: Tryst/2.8.0 (cup.github.io/umber/awk/tryst)

On Mon, 17 Dec 2018 13:22:48, Ondřej Surý wrote:
> # No amount of options makes the grep find the text in the file
> $ ./grep-3.0-2.exe 'foo$’ crlf.txt
> $ ./grep-3.0-2.exe -U 'foo$' crlf.txt
> $ ./grep-3.0-2.exe -a 'foo$’ crlf.txt

Your commands are failing because you are not accounding for the carriage
returns. as was said, this change was intentionally done for the purpose of
making scripts MORE portable:

https://cygwin.com/ml/cygwin/2017-02/msg00155.html

if you want to keep your grep command, you need to remove CR first:

    $ printf 'alpha\r\nbeta\r\n' > CRLF.txt
    $ tr -d '\r' < CRLF.txt | grep 'a$'
    alpha
    beta


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