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From: Stefan Ehmann <shoesoft@gmx.net>
Subject: unexpected grep -o behavior
To: freebsd-stable@freebsd.org
Message-ID: <b70e8022-d8f8-24ce-f571-40b07c07c6e1@gmx.net>
Date: Sun, 27 Nov 2016 21:52:37 +0100
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When I try to match the first character of a line grep also matches all
subsequent characters:

$ echo 123 | grep -o '^.'
1
2
3

Same with bsdgrep.
grep from ports works as expected:

$ echo 123 | /usr/local/bin/grep -o '^.'
1

Tested on 11.0.

Bug 195763 looks related, but I'm not sure it's the same issue.