Fwd: cannot search for -a in man inside mintty under cygwin-1.7

[moo.tinys]

using mintty
LANG=zh_CN.UTF-8 mintty
inside mintty:
$ man man
/-
Pattern not found  (press RETURN)
q

it's actually -
$ LANG=C man man
/-
(no problem)
q

any idea?

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