You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: quotes.rb
    path of file: ./repos/anystyle/lib/anystyle/feature
    
    the code of the file until where you have to start completion: module AnyStyle
  class Feature
    class Quotes < Feature
      def observe(token, **opts)
        case token
        when /^[^"'”„’‚´«「『〈《‘“`»」』〉》]+$/
          :none
        when /
    
      def observe(token, **opts)
        case token
        when /^[^"'”„’‚´«「『〈《‘“`»」』〉》]+$/
          :none
        when /^["'”„’‚´«「『〈《‘“`»].*["'”„’‚´«‘“`»」』〉》][,;:\p{Pd}!\?\.]?$/
          :'quote-unquote'
        when /^["'”„’‚´«「『‘〈《“`»]/
          :quote
        when /["'”„’‚´«‘“`»」』〉》][,;:\p{Pd}!\?\.]?$/
          :unquote
        else
          :other
        end