Cast to unsigned char after or'ing in the meta bit, so the compiler
doesn't complain when it's implicitly converted to plain char in an
assignment, and to make sure it's not negative when used as an

Cast to unsigned char after or'ing in the meta bit, so the compiler
doesn't complain when it's implicitly converted to plain char in an
assignment, and to make sure it's not negative when used as an array index.

ok miod@

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