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EDIT :: name_error.rb

module DidYouMean module Correctable if Exception.method_defined?(:detailed_message) # just for compatibility def original_message # we cannot use alias here because to_s end def detailed_message(highlight: true, did_you_mean: true, **) msg = super.dup return msg unless did_you_mean suggestion = DidYouMean.formatter.message_for(corrections) if highlight suggestion = suggestion.gsub(/.+/) { "\e[1m" + $& + "\e[m" } end msg << suggestion msg rescue super end else SKIP_TO_S_FOR_SUPER_LOOKUP = true private_constant :SKIP_TO_S_FOR_SUPER_LOOKUP def original_message meth = method(:to_s) while meth.owner.const_defined?(:SKIP_TO_S_FOR_SUPER_LOOKUP) meth = meth.super_method end meth.call end def to_s msg = super.dup suggestion = DidYouMean.formatter.message_for(corrections) msg << suggestion if !msg.include?(suggestion) msg rescue super end end def corrections @corrections ||= spell_checker.corrections end def spell_checker DidYouMean.spell_checkers[self.class.to_s].new(self) end end end

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