From: Yukihiro Matsumoto <matz@...>
Date: 2005-05-24T17:24:53+09:00
Subject: Re: debugger restart

Hi,

In message "Re: debugger restart"
    on Tue, 24 May 2005 08:48:36 +0900, Sam Roberts <sroberts@uniserve.com> writes:

|As far as I have been able to tell. Its a huge PITA, isn't it? You get
|all your breakpoints and everything set up, then skip past your bug, and
|have to do it all over again.
|
|Writing the debugger in ruby is cool, but appears to have some
|downsides.

Does this small patch helps you?

The r (restart) command moves you back to the beginning.  And at the
script termination, it goes back to the start as well, unless you
specify q (quit) command.

--- lib/debug.rb	6 Dec 2004 15:31:25 -0000	1.54
+++ lib/debug.rb	24 May 2005 08:18:39 -0000
@@ -257,2 +257,8 @@ class Context
     MUTEX.lock
+    unless $debugger_restart
+      callcc{|c| $debugger_restart = c} 
+      at_exit {
+        $debugger_restart.call
+      }
+    end
     set_last_thread(Thread.current)
@@ -525,2 +531,5 @@ class Context
 	  stdout.printf "%s\n", debug_eval($', binding).inspect
+
+	when /^\s*r(?:estart)?$/
+          $debugger_restart.call