bug#16893: [PATCH] Avoid matching line-by-line for case-insensitive with grep

[Norihiro Tanaka]

Hi Jim,

I thank you for your review and pointing the bug for the patch.  You are
right.  I have written the wrong if conditions.  I think that behavior
shouldn't be changed for the pcre or fgrep matcher by the patch.  I have
fixed its bug, and re-send the patch and results of tests.

Norihiro

avoid_line_by_line.txt
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tests.txt
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