diff --git a/Lib/pdb.py b/Lib/pdb.py
index 1cd6706..0751c17 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -13,7 +13,6 @@
 import re
 import pprint
 import traceback
-import signal
 
 
 class Restart(Exception):
@@ -73,8 +72,6 @@
             import readline
         except ImportError:
             pass
-        self.allow_kbdint = False
-        signal.signal(signal.SIGINT, self.sigint_handler)
 
         # Read $HOME/.pdbrc and ./.pdbrc
         self.rcLines = []
@@ -107,13 +104,6 @@
         self.commands_bnum = None # The breakpoint number for which we are
                                   # defining a list
 
-    def sigint_handler(self, signum, frame):
-        if self.allow_kbdint:
-            raise KeyboardInterrupt()
-        print >>self.stdout, "\nProgram interrupted. (Use 'cont' to resume)."
-        self.set_step()
-        self.set_trace(frame)
-
     def reset(self):
         bdb.Bdb.reset(self)
         self.forget()
@@ -186,7 +176,7 @@
             if not self.commands_silent[currentbp]:
                 self.print_stack_entry(self.stack[self.curindex])
             if self.commands_doprompt[currentbp]:
-                self._cmdloop()
+                self.cmdloop()
             self.forget()
             return
         return 1
@@ -209,22 +199,11 @@
         self.interaction(frame, exc_traceback)
 
     # General interaction function
-    def _cmdloop(self):
-        while 1:
-            try:
-                # keyboard interrupts allow for an easy way to interrupt
-                # the current command
-                self.allow_kbdint = True
-                self.cmdloop()
-                self.allow_kbdint = False
-                break
-            except KeyboardInterrupt:
-                print >>self.stdout, '--KeyboardInterrupt--'
 
     def interaction(self, frame, traceback):
         self.setup(frame, traceback)
         self.print_stack_entry(self.stack[self.curindex])
-        self._cmdloop()
+        self.cmdloop()
         self.forget()
 
     def displayhook(self, obj):
@@ -350,22 +329,9 @@
         prompt_back = self.prompt
         self.prompt = '(com) '
         self.commands_defining = True
-        try:
-            self.cmdloop()
-        except (KeyboardInterrupt, IOError):
-            # It appears that that when pdb is reading input from a pipe
-            # we may get IOErrors, rather than KeyboardInterrupt.
-            # Now discard all the commands entered so far (essentially undo
-            # any effect of this "commands"  cmd)
-            self.commands.pop(bnum)
-            self.commands_doprompt.pop(bnum)
-            self.commands_silent.pop(bnum)
-            # this will get caught by the _cmdloop and pdb will reenter
-            # the main command loop
-            raise KeyboardInterrupt()
-        finally:
-            self.commands_defining = False
-            self.prompt = prompt_back
+        self.cmdloop()
+        self.commands_defining = False
+        self.prompt = prompt_back
 
     def do_break(self, arg, temporary = 0):
         # break [ ([filename:]lineno | function) [, "condition"] ]