1 files changed, 7 insertions, 0 deletions
diff --git a/lib/debug.rb b/lib/debug.rb
index 432c7b4d19..2e3a29aa9e 100644
--- a/lib/debug.rb
+++ b/lib/debug.rb
@@ -11,6 +11,8 @@ class DEBUGGER__
     @scripts = {}
   end
 
+  DEBUG_LAST_CMD = []
+
   def interrupt
     @stop_next = 1
   end
@@ -40,6 +42,11 @@ class DEBUGGER__
     STDOUT.flush
     while input = STDIN.gets
       input.chop!
+      if input == ""
+	input = DEBUG_LAST_CMD[0]
+      else
+	DEBUG_LAST_CMD[0] = input
+      end
       case input
       when /^b(reak)?\s+(([^:\n]+:)?.+)/
 	pos = $2