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Date: Wed, 24 Sep 2008 16:17:16 -0700
From: Gary Johnson <garyjohn AT spk DOT agilent DOT com>
To: cygwin AT cygwin DOT com
Subject: Bug in grep when -i used with -o and/or --color=auto
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Cygwin's grep appears to give incorrect results when given the -i 
option in combination with the --color=auto and/or -o options.

For example,

   grep --color=auto You /etc/motd

prints the line

   You are successfully logged in to this server!!!

as expected, with "You" in red.  However, while

   grep --color=auto -i you /etc/motd

prints the same line, "You" is not colored.

As another example,

   grep -o You /etc/motd

prints just

   You

as expected, but

   grep -o -i you /etc/motd

prints nothing.

Those option combinations work correctly with /bin/grep (GNU grep) 
2.5.1 on a machine running Red Hat Enterprise Linux WS release 4.

   $ uname -a
   CYGWIN_NT-5.1 tc-merlin 1.5.25(0.156/4/2) 2008-06-12 19:34 i686 Cygwin

   $ which grep
   /usr/bin/grep

   $ cygcheck -c grep
   Cygwin Package Information
   Package              Version        Status
   grep                 2.5.1a-4       OK

Regards,
Gary


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