# File lib/innate/node.rb, line 852
    def possible_exts_for(wish)
      pr = provides
      return unless engine = pr["#{wish}_handler"]
      View.exts_of(engine).map{|e_ext|
        [[*wish].map{|w_ext| /#{w_ext}\.#{e_ext}$/ }, /#{e_ext}$/]
      }.flatten
    end