diff --git a/ChangeLog b/ChangeLog
index 59eb5a7150..1d45f2dde8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+Thu Sep 17 13:50:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* thread.c (rb_thread_s_debug_set): set level, not only boolean.
+
+Thu Sep 17 13:12:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/rdoc/parser/ruby.rb (RDoc::Parser::Ruby): parse also rdoc
+	  files.
+
+	* doc/re.rdoc: renamed from re.rb.
+
 Thu Sep 17 09:37:28 2009  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* doc/re.rb: New document for Ruby's fork of Oniguruma.
diff --git a/thread.c b/thread.c
index cab4822e28..984227ea81 100644
--- a/thread.c
+++ b/thread.c
@@ -152,7 +152,7 @@ rb_thread_s_debug(void)
 static VALUE
 rb_thread_s_debug_set(VALUE self, VALUE val)
 {
-    rb_thread_debug_enabled = RTEST(val);
+    rb_thread_debug_enabled = RTEST(val) ? NUM2INT(val) : 0;
     return val;
 }
 # else