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polyfill
warn.rb
# frozen_string_literal: true # Polyfill for Kernel#warn with the category parameter. Not all Ruby engines # have Method#parameters implemented, so we check the arity instead if # necessary. if (method = Kernel.instance_method(:warn)).respond_to?(:parameters) ? method.parameters.none? { |_, name| name == :category } : (method.arity == -1) Kernel.prepend( Module.new { def warn(*msgs, uplevel: nil, category: nil) # :nodoc: case uplevel when nil super(*msgs) when Integer super(*msgs, uplevel: uplevel + 1) else super(*msgs, uplevel: uplevel.to_int + 1) end end } ) Object.prepend( Module.new { def warn(*msgs, uplevel: nil, category: nil) # :nodoc: case uplevel when nil super(*msgs) when Integer super(*msgs, uplevel: uplevel + 1) else super(*msgs, uplevel: uplevel.to_int + 1) end end } ) end
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