Formula factory: add comment
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@ -410,6 +410,8 @@ class Formula
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# have a "no such formula" message.
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# have a "no such formula" message.
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raise
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raise
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rescue LoadError, NameError
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rescue LoadError, NameError
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# Catch NameError so that things that are invalid symbols still get
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# a useful error message.
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raise FormulaUnavailableError.new(name)
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raise FormulaUnavailableError.new(name)
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end
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end
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