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2021-02-03T06:59:30.847532Z
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lualoader: position hyphens at the beginning of character classes

According to the Lua 5.4 manual section 6.4.1 ("Patterns"), the interaction
between ranges and classes is not defined and hyphens must be specified at
either the beginning or the end of a set if they are not escaped.

Move all such occurrences to the beginning.

(cherry picked from commit b24872cf7b13314669ed2136c0262bb2eb007695)

Git Hash:   eefddc38243d53a6df41f72c17c65b17d8c46e9c
Git Author: kevans@FreeBSD.org
END