diff --git a/ChangeLog b/ChangeLog
index 9c577fb1e9..d126845219 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Nov 17 16:09:52 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
+
+	* test/test_tracer.rb: new test case.
+	  mimimal regression test for r29280.
+
 Wed Nov 17 16:04:23 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
 
 	* test/ruby/envutil.rb (Test::Unit::Assersions#assert_warn):
diff --git a/test/test_tracer.rb b/test/test_tracer.rb
new file mode 100644
index 0000000000..2580205338
--- /dev/null
+++ b/test/test_tracer.rb
@@ -0,0 +1,20 @@
+require 'test/unit'
+require_relative 'ruby/envutil'
+
+class TestTracer < Test::Unit::TestCase
+  include EnvUtil
+
+  def test_work_with_e
+    assert_in_out_err(%w[-rtracer -e 1]) do |(*lines),|
+      case lines.size
+      when 2
+        assert_match %r[#0:<internal:lib/rubygems/custom_require>:\d+:Kernel:<: -], lines[0]
+      when 1
+        # do nothing
+      else
+        flunk 'unexpected output from `ruby -rtracer -e 1`'
+      end
+      assert_equal "#0:-e:1::-: 1", lines[1]
+    end
+  end
+end