Follow-up Comment #7, bug #12995 (project grep):
More testcases from bug 18666:
The following commands all colour the a's and A's in their output:
LC_ALL=en_GB.utf8 grep --color -i a file
LC_ALL=en_GB.utf8 grep --color -i A file
LC_ALL=en_GB grep --color -i a file
LC_ALL=C grep --color -i a file
But these two commands do not:
LC_ALL=en_GB grep --color -i A file
LC_ALL=C grep --color -i A file
The combination of option -i with an uppercase letter in the search pattern
and a non-UTF8 locale makes colourisation fail.
(That is: with grep from CVS. With grep-2.5.1 it works fine.)
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