# File cli/ruby-debug/processor.rb, line 149
    def at_breakpoint(context, breakpoint)
      aprint 'stopped' if Debugger.annotate.to_i > 2
      n = Debugger.breakpoints.index(breakpoint) + 1
      file = CommandProcessor.canonic_file(breakpoint.source)
      line = breakpoint.pos
      if Debugger.annotate.to_i > 2
        print afmt("source #{file}:#{line}")
      end
      print "Breakpoint %d at %s:%s\n", n, file, line
    end