diff --git a/ChangeLog b/ChangeLog
index 4810f7e9f2..9b577ea6da 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Nov 20 07:33:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* lib/logger.rb (Logger): should handle the case that cvs/svn do
+	  not expand $Id keyword.  [ruby-core:19991]
+
 Thu Nov 20 07:27:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* lib/minitest/unit.rb (MiniTest::Assertions#capture_io): adjust
diff --git a/lib/logger.rb b/lib/logger.rb
index 26d7d9d560..07699e7017 100644
--- a/lib/logger.rb
+++ b/lib/logger.rb
@@ -182,7 +182,13 @@ require 'monitor'
 class Logger
   VERSION = "1.2.6"
   id, name, rev = %w$Id$
-  ProgName = "#{name.chomp(",v")}/#{rev}"
+  if name
+    name = name.chomp(",v")
+  else
+    name = File.basename(__FILE__)
+  end
+  rev ||= "v#{VERSION}"
+  ProgName = "#{name}/#{rev}"
 
   class Error < RuntimeError; end
   class ShiftingError < Error; end