*** pdb.py	2010/06/15 17:17:36	1.1
--- pdb.py	2010/06/15 18:02:28
***************
*** 602,630 ****
      def do_where(self, arg):
          self.print_stack_trace()
      do_w = do_where
      do_bt = do_where
  
      def do_up(self, arg):
!         if self.curindex == 0:
!             print >>self.stdout, '*** Oldest frame'
!         else:
!             self.curindex = self.curindex - 1
              self.curframe = self.stack[self.curindex][0]
-             self.print_stack_entry(self.stack[self.curindex])
              self.lineno = None
      do_u = do_up
  
      def do_down(self, arg):
!         if self.curindex + 1 == len(self.stack):
!             print >>self.stdout, '*** Newest frame'
!         else:
!             self.curindex = self.curindex + 1
              self.curframe = self.stack[self.curindex][0]
-             self.print_stack_entry(self.stack[self.curindex])
              self.lineno = None
      do_d = do_down
  
      def do_until(self, arg):
          self.set_until(self.curframe)
          return 1
      do_unt = do_until
--- 602,652 ----
      def do_where(self, arg):
          self.print_stack_trace()
      do_w = do_where
      do_bt = do_where
  
      def do_up(self, arg):
! 	nup = 1
! 	if arg:
! 	    try:
! 		nup = int(arg)
! 		if nup < 0:
! 		    nup = self.curindex
! 	    except:
! 		pass
! 
! 	for _ignore in xrange(nup):
! 	    if self.curindex is 0:
! 		print >>self.stdout, '*** Oldest frame'
! 		break
!             self.curindex -= 1
              self.curframe = self.stack[self.curindex][0]
              self.lineno = None
+ 	self.print_stack_entry(self.stack[self.curindex])
+ 
      do_u = do_up
  
      def do_down(self, arg):
! 	ndown = 1
! 	if arg:
! 	    try:
! 		ndown = int(arg)
! 		if ndown < 0:
! 		    ndown = len(self.stack) - self.curindex
! 	    except:
! 		pass
! 
! 	for _ignore in xrange(ndown):
! 	    if self.curindex + 1 is len(self.stack):
! 		print >>self.stdout, '*** Newest frame'
! 		break
!             self.curindex += 1
              self.curframe = self.stack[self.curindex][0]
              self.lineno = None
+ 	self.print_stack_entry(self.stack[self.curindex])
+ 
      do_d = do_down
  
      def do_until(self, arg):
          self.set_until(self.curframe)
          return 1
      do_unt = do_until
***************
*** 895,917 ****
      help_bt = help_w
  
      def help_down(self):
          self.help_d()
  
      def help_d(self):
!         print >>self.stdout, """d(own)
! Move the current frame one level down in the stack trace
! (to a newer frame)."""
  
      def help_up(self):
          self.help_u()
  
      def help_u(self):
!         print >>self.stdout, """u(p)
! Move the current frame one level up in the stack trace
! (to an older frame)."""
  
      def help_break(self):
          self.help_b()
  
      def help_b(self):
          print >>self.stdout, """b(reak) ([file:]lineno | function) [, condition]
--- 917,939 ----
      help_bt = help_w
  
      def help_down(self):
          self.help_d()
  
      def help_d(self):
!         print >>self.stdout, """d(own) [#steps]
! Move the current frame #steps levels (default 1) down (towards newer frames)
! in the stack trace.  If #steps is -1, move to bottom of trace."""
  
      def help_up(self):
          self.help_u()
  
      def help_u(self):
!         print >>self.stdout, """u(p) [#steps]
! Move the current frame #steps levels (default 1) up (towards older frames)
! in the stack trace.  If #steps is -1, move to top of trace."""
  
      def help_break(self):
          self.help_b()
  
      def help_b(self):
          print >>self.stdout, """b(reak) ([file:]lineno | function) [, condition]