get_line

# File lib/tracer.rb, line 153
  def get_line(file, line) # :nodoc:
    if p = @get_line_procs[file]
      return p.call(line)
    end

    unless list = SCRIPT_LINES__[file]
      list = File.readlines(file) rescue []
      SCRIPT_LINES__[file] = list
    end

    if l = list[line - 1]
      l
    else
      "-\n"
    end
  end