fix frozen string literal warning
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@ -10,7 +10,7 @@ class Sensitive
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end
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end
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def mask(v)
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def mask(v)
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"".concat(v[0, @head], @ch * (v.length - (@head + @tail)), v[-@tail, @tail])
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String.new.concat(v[0, @head], @ch * (v.length - (@head + @tail)), v[-@tail, @tail])
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end
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end
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def unwrap
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def unwrap
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