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unless '1.9'.respond_to?(:each_char)
autoload :StringScanner, 'strscan' unless defined? :StringScanner
class String
# Yields a single-character string for each character in the string.
# When $KCODE = 'UTF8', multi-byte characters are yielded appropriately.
def each_char
scanner, char = StringScanner.new(self), /./mu
while c = scanner.scan(char)
yield c
end
end
end
end
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