egrep (GNU grep) 2.5.1 --color bug with -i

[Chris Findlay]

(Under Cygwin)
When using grep --color, it correctly highlights the matched text, but when 
using it also with -i, it only highlights matching text that also matches the 
case, even though it displays matches for any case.

e.g.
if the output of `egrep -i a` or `egrep -i A` both produce the lines:
xyza
123A
the addition of --colour to these should (I'd expect) highlight both a and A, 
but instead only highlights one - namely the one that is the same case as the 
entered arg.

In other words, when -i is used, the match is case insensitive as expected, but 
the highlighting is not.

J.Chris Findlay
Senior Software Engineer
 - Product Development Division
MYOB NZ Ltd
PO Box 12940
Level 1, MYOB House, Building A,
 The Millennium Centre
602 Great South Rd, Ellerslie
Auckland
Tel: +64 9 925 3579
Fax: +64 9 925 3501
address@hidden
www.myob.co.nz