docs: def should_break_here(self, frame):
          """Check wether there is a breakpoint at this frame."""
          # Next line commented out for performance
          #_logger.b_debug("should_break_here(filename=%s, lineno=%s) with breaks=%s",
          #                frame.f_code.co_filename,
          #                frame.f_lineno,
          #                IKBreakpoint.breakpoints_by_number)
          
          c_file_name = self.canonic(frame.f_code.co_filename)
          if not c_file_name in IKBreakpoint.breakpoints_files:
              return False
          bp = IKBreakpoint.lookup_effective_breakpoint(c_file_name, 
                                                        frame.f_lineno, 
                                                        frame)
          return True if bp else False