Index: lib/webrick/cookie.rb
===================================================================
--- lib/webrick/cookie.rb	(revision 17538)
+++ lib/webrick/cookie.rb	(working copy)
@@ -77,7 +77,7 @@
     end
 
     def self.parse_set_cookie(str)
-      cookie_elem = str.split(/;/)
+      cookie_elem = str.split(/;+/)
       first_elem = cookie_elem.shift
       first_elem.strip!
       key, value = first_elem.split(/=/, 2)
Index: test/webrick/test_cookie.rb
===================================================================
--- test/webrick/test_cookie.rb	(revision 17538)
+++ test/webrick/test_cookie.rb	(working copy)
@@ -71,6 +71,15 @@
     assert_equal(true, cookie.secure)
   end
 
+  def test_parse_set_cookie_extra_semicolon
+    data = %(WSIDC=WEST;; domain=.tenderlovemaking.com; path=/)
+    cookie = WEBrick::Cookie.parse_set_cookie(data)
+    assert_equal('WSIDC', cookie.name)
+    assert_equal('WEST', cookie.value)
+    assert_equal("/", cookie.path)
+    assert_equal(".tenderlovemaking.com", cookie.domain)
+  end
+
   def test_parse_set_cookies
     data = %(Shipping="FedEx"; Version="1"; Path="/acme"; Secure)
     data << %(, CUSTOMER=WILE_E_COYOTE; path=/; expires=Wednesday, 09-Nov-99 23:12:40 GMT; path=/; Secure)