# File lib/pry/commands/edit/exception_patcher.rb, line 15
      def perform_patch
        file_name, _ = file_and_line
        lines = state.dynamical_ex_file || File.read(file_name)

        source = Pry::Editor.new(_pry_).edit_tempfile_with_content(lines)
        _pry_.evaluate_ruby source
        state.dynamical_ex_file = source.split("\n")
      end