diff --git a/src/NameMatchOptionHandler.cc b/src/NameMatchOptionHandler.cc
index faa5aa09..47a088d0 100644
--- a/src/NameMatchOptionHandler.cc
+++ b/src/NameMatchOptionHandler.cc
@@ -52,7 +52,6 @@ NameMatchOptionHandler::NameMatchOptionHandler
   : pref_(pref),
     description_(description),
     defaultValue_(defaultValue),
-    id_(0),
     argType_(argType),
     shortName_(shortName),
     hidden_(false),
@@ -65,11 +64,6 @@ NameMatchOptionHandler::NameMatchOptionHandler
 
 NameMatchOptionHandler::~NameMatchOptionHandler() {}
   
-bool NameMatchOptionHandler::canHandle(const std::string& optName)
-{
-  return pref_->k == optName;
-}
-
 void NameMatchOptionHandler::parse(Option& option, const std::string& arg)
 {
   try {
diff --git a/src/NameMatchOptionHandler.h b/src/NameMatchOptionHandler.h
index 2426484b..9bd9db96 100644
--- a/src/NameMatchOptionHandler.h
+++ b/src/NameMatchOptionHandler.h
@@ -56,8 +56,6 @@ protected:
 
   std::vector<std::string> tags_;
 
-  int id_;
-
   OptionHandler::ARG_TYPE argType_;
 
   char shortName_;
@@ -81,8 +79,6 @@ public:
 
   virtual ~NameMatchOptionHandler();
   
-  virtual bool canHandle(const std::string& optName);
-
   virtual void parse(Option& option, const std::string& arg);
 
   virtual bool hasTag(const std::string& tag) const;
@@ -123,16 +119,6 @@ public:
     return shortName_;
   }
 
-  virtual int getOptionID() const
-  {
-    return id_;
-  }
-
-  virtual void setOptionID(int id)
-  {
-    id_ = id;
-  }
-
   virtual OptionHandler::ARG_TYPE getArgType() const
   {
     return argType_;
@@ -189,8 +175,6 @@ public:
   }
 };
 
-typedef SharedHandle<NameMatchOptionHandler> NameMatchOptionHandlerHandle;
-
 } // namespace aria2
 
 #endif // D_NAME_MATCH_OPTION_HANDLER_H
diff --git a/src/OptionHandler.h b/src/OptionHandler.h
index f9302a28..b7a5dbb8 100644
--- a/src/OptionHandler.h
+++ b/src/OptionHandler.h
@@ -62,7 +62,6 @@ class OptionHandler {
 public:
   virtual ~OptionHandler() {}
   
-  virtual bool canHandle(const std::string& optName) = 0;
   virtual void parse(Option& option, const std::string& arg) = 0;
 
   virtual std::string createPossibleValuesString() const = 0;
@@ -95,10 +94,6 @@ public:
 
   virtual char getShortName() const = 0;
 
-  virtual int getOptionID() const = 0;
-
-  virtual void setOptionID(int id) = 0;
-
   // Returns true if option value should be erased from argv to
   // prevent it from appearing in the output of ps.
   virtual bool getEraseAfterParse() const = 0;
@@ -115,31 +110,6 @@ public:
   virtual void setCumulative(bool f) = 0;
 };
 
-class OptionHandlerNameLesser:public std::binary_function
-<SharedHandle<OptionHandler>, SharedHandle<OptionHandler>, bool> {
-public:
-  bool operator()
-  (const SharedHandle<OptionHandler>& lhs,
-   const SharedHandle<OptionHandler>& rhs) const
-  {
-    return lhs->getName() < rhs->getName();
-  }
-};
-
-class OptionHandlerIDLesser:public std::binary_function
-<SharedHandle<OptionHandler>, SharedHandle<OptionHandler>, bool> {
-public:
-  bool operator()
-  (const SharedHandle<OptionHandler>& lhs,
-   const SharedHandle<OptionHandler>& rhs) const
-  {
-    return lhs->getOptionID() < rhs->getOptionID();
-  }
-};
-
-typedef SharedHandle<OptionHandler> OptionHandlerHandle;
-typedef std::vector<OptionHandlerHandle> OptionHandlers;
-
 std::ostream& operator<<(std::ostream& o, const OptionHandler& optionHandler);
 
 } // namespace aria2
diff --git a/src/OptionHandlerFactory.cc b/src/OptionHandlerFactory.cc
index dda2e88e..1ffd8e6a 100644
--- a/src/OptionHandlerFactory.cc
+++ b/src/OptionHandlerFactory.cc
@@ -45,9 +45,10 @@
 
 namespace aria2 {
 
-OptionHandlers OptionHandlerFactory::createOptionHandlers()
+std::vector<SharedHandle<OptionHandler> >
+OptionHandlerFactory::createOptionHandlers()
 {
-  OptionHandlers handlers;
+  std::vector<SharedHandle<OptionHandler> > handlers;
   // General Options
   {
     SharedHandle<OptionHandler> op(new BooleanOptionHandler
diff --git a/src/OptionHandlerImpl.cc b/src/OptionHandlerImpl.cc
index e1c4b814..0c8ff279 100644
--- a/src/OptionHandlerImpl.cc
+++ b/src/OptionHandlerImpl.cc
@@ -702,11 +702,6 @@ DeprecatedOptionHandler::DeprecatedOptionHandler
   : depOptHandler_(depOptHandler), repOptHandler_(repOptHandler)
 {}
 
-bool DeprecatedOptionHandler::canHandle(const std::string& optName)
-{
-  return depOptHandler_->canHandle(optName);
-}
-
 void DeprecatedOptionHandler::parse(Option& option, const std::string& arg)
 {
   if(repOptHandler_) {
@@ -780,16 +775,6 @@ char DeprecatedOptionHandler::getShortName() const
   return depOptHandler_->getShortName();
 }
 
-int DeprecatedOptionHandler::getOptionID() const
-{
-  return depOptHandler_->getOptionID();
-}
-
-void DeprecatedOptionHandler::setOptionID(int id)
-{
-  depOptHandler_->setOptionID(id);
-}
-
 bool DeprecatedOptionHandler::getEraseAfterParse() const
 {
   return depOptHandler_->getEraseAfterParse();
diff --git a/src/OptionHandlerImpl.h b/src/OptionHandlerImpl.h
index 523419d2..5f11732e 100644
--- a/src/OptionHandlerImpl.h
+++ b/src/OptionHandlerImpl.h
@@ -294,7 +294,6 @@ public:
   (const SharedHandle<OptionHandler>& depOptHandler,
    const SharedHandle<OptionHandler>& repOptHandler =
    SharedHandle<OptionHandler>());
-  virtual bool canHandle(const std::string& optName);
   virtual void parse(Option& option, const std::string& arg);
   virtual std::string createPossibleValuesString() const;
   virtual bool hasTag(const std::string& tag) const;
@@ -308,8 +307,6 @@ public:
   virtual const Pref* getPref() const;
   virtual ARG_TYPE getArgType() const;
   virtual char getShortName() const;
-  virtual int getOptionID() const;
-  virtual void setOptionID(int id);
   virtual bool getEraseAfterParse() const;
   virtual void setEraseAfterParse(bool eraseAfterParse);
   virtual bool getInitialOption() const;
diff --git a/test/OptionHandlerTest.cc b/test/OptionHandlerTest.cc
index 19607b2d..1810cc79 100644
--- a/test/OptionHandlerTest.cc
+++ b/test/OptionHandlerTest.cc
@@ -58,8 +58,6 @@ CPPUNIT_TEST_SUITE_REGISTRATION( OptionHandlerTest );
 void OptionHandlerTest::testBooleanOptionHandler()
 {
   BooleanOptionHandler handler(PREF_DAEMON);
-  CPPUNIT_ASSERT(handler.canHandle(PREF_DAEMON->k));
-  CPPUNIT_ASSERT(!handler.canHandle(PREF_DIR->k));
   Option option;
   handler.parse(option, A2_V_TRUE);
   CPPUNIT_ASSERT_EQUAL(std::string(A2_V_TRUE), option.get(PREF_DAEMON));
@@ -76,8 +74,6 @@ void OptionHandlerTest::testBooleanOptionHandler()
 void OptionHandlerTest::testNumberOptionHandler()
 {
   NumberOptionHandler handler(PREF_TIMEOUT);
-  CPPUNIT_ASSERT(handler.canHandle(PREF_TIMEOUT->k));
-  CPPUNIT_ASSERT(!handler.canHandle(PREF_DIR->k));
   Option option;
   handler.parse(option, "0");
   CPPUNIT_ASSERT_EQUAL(std::string("0"), option.get(PREF_TIMEOUT));
@@ -136,8 +132,6 @@ void OptionHandlerTest::testNumberOptionHandler_min_max()
 void OptionHandlerTest::testUnitNumberOptionHandler()
 {
   UnitNumberOptionHandler handler(PREF_TIMEOUT);
-  CPPUNIT_ASSERT(handler.canHandle(PREF_TIMEOUT->k));
-  CPPUNIT_ASSERT(!handler.canHandle("foobar"));
   Option option;
   handler.parse(option, "4294967296");
   CPPUNIT_ASSERT_EQUAL(std::string("4294967296"), option.get(PREF_TIMEOUT));
@@ -161,8 +155,6 @@ void OptionHandlerTest::testUnitNumberOptionHandler()
 void OptionHandlerTest::testParameterOptionHandler_1argInit()
 {
   ParameterOptionHandler handler(PREF_TIMEOUT, "", "", "value1");
-  CPPUNIT_ASSERT(handler.canHandle(PREF_TIMEOUT->k));
-  CPPUNIT_ASSERT(!handler.canHandle("foobar"));
   Option option;
   handler.parse(option, "value1");
   CPPUNIT_ASSERT_EQUAL(std::string("value1"), option.get(PREF_TIMEOUT));
@@ -177,8 +169,6 @@ void OptionHandlerTest::testParameterOptionHandler_1argInit()
 void OptionHandlerTest::testParameterOptionHandler_2argsInit()
 {
   ParameterOptionHandler handler(PREF_TIMEOUT, "", "", "value1", "value2");
-  CPPUNIT_ASSERT(handler.canHandle(PREF_TIMEOUT->k));
-  CPPUNIT_ASSERT(!handler.canHandle("foobar"));
   Option option;
   handler.parse(option, "value1");
   CPPUNIT_ASSERT_EQUAL(std::string("value1"), option.get(PREF_TIMEOUT));
@@ -199,8 +189,6 @@ void OptionHandlerTest::testParameterOptionHandler_listInit()
   validValues.push_back("value2");
 
   ParameterOptionHandler handler(PREF_TIMEOUT, "", "", validValues);
-  CPPUNIT_ASSERT(handler.canHandle(PREF_TIMEOUT->k));
-  CPPUNIT_ASSERT(!handler.canHandle("foobar"));
   Option option;
   handler.parse(option, "value1");
   CPPUNIT_ASSERT_EQUAL(std::string("value1"), option.get(PREF_TIMEOUT));
@@ -217,8 +205,6 @@ void OptionHandlerTest::testParameterOptionHandler_listInit()
 void OptionHandlerTest::testDefaultOptionHandler()
 {
   DefaultOptionHandler handler(PREF_TIMEOUT);
-  CPPUNIT_ASSERT(handler.canHandle(PREF_TIMEOUT->k));
-  CPPUNIT_ASSERT(!handler.canHandle("foobar"));
   Option option;
   handler.parse(option, "bar");
   CPPUNIT_ASSERT_EQUAL(std::string("bar"), option.get(PREF_TIMEOUT));
@@ -238,8 +224,6 @@ void OptionHandlerTest::testDefaultOptionHandler()
 void OptionHandlerTest::testFloatNumberOptionHandler()
 {
   FloatNumberOptionHandler handler(PREF_TIMEOUT);
-  CPPUNIT_ASSERT(handler.canHandle(PREF_TIMEOUT->k));
-  CPPUNIT_ASSERT(!handler.canHandle("foobar"));
   Option option;
   handler.parse(option, "1.0");
   CPPUNIT_ASSERT_EQUAL(std::string("1.0"), option.get(PREF_TIMEOUT));
@@ -298,8 +282,6 @@ void OptionHandlerTest::testFloatNumberOptionHandler_min_max()
 void OptionHandlerTest::testHttpProxyOptionHandler()
 {
   HttpProxyOptionHandler handler(PREF_HTTP_PROXY, "", "");
-  CPPUNIT_ASSERT(handler.canHandle(PREF_HTTP_PROXY->k));
-  CPPUNIT_ASSERT(!handler.canHandle("foobar"));
   Option option;
   handler.parse(option, "proxy:65535");
   CPPUNIT_ASSERT_EQUAL(std::string("http://proxy:65535/"),