bug#16631: Consideration of title case on case-insensitive matching

[Jim Meyering]

On Mon, Feb 3, 2014 at 8:20 AM, Norihiro Tanaka <address@hidden> wrote:
> Package: grep
> Tags: patch
>
> In UTF-8 character set, an alphabet may have not only upper case and
> lower case but title case.  grep-2.16 fails in matching as following
> in order not to take it into consideration.
>
>   echo 'LJ' | LC_ALL=en_US.UTF-8 grep -i Lj
>   echo 'Lj' | LC_ALL=en_US.UTF-8 grep -i LJ
>
> We expect that LJ and Lj are returned, respectively.  But both return
> nothing.
>
> This patch replaces `towupper' and `towlower' to `towctrans'.
> And the above will return the expected results.

Thank you for working on this.  However, the attached patch is one
that has already been applied.