Package: grep
Tags: patch

I believe that the purpose of trivial_case_ignore function helped DFA
which couldn't process case-insensitive matching fast.  Though now DFA
can process it fast, I kept it still, because I thought that kwset is
never used for case_insensitive matching in multi-byte locales if get
rid of it.

However, when change kwsmusts as it's used even if fill MB_CUR_MAX > 1
and case-insensitive, DFA gives the same result in spite of whether use
trivial_case_ignore function or not.

Now remove it, because I think that it served one's purpose.

Sorry, Jim.

Norihiro