diff --git a/taglib/toolkit/tbytevectorlist.cpp b/taglib/toolkit/tbytevectorlist.cpp
index 33e10ad6..8171781d 100644
--- a/taglib/toolkit/tbytevectorlist.cpp
+++ b/taglib/toolkit/tbytevectorlist.cpp
@@ -72,6 +72,11 @@ ByteVectorList::ByteVectorList(const ByteVectorList &l) :
 {
 }
 
+ByteVectorList::ByteVectorList(std::initializer_list<ByteVector> init) :
+  List<ByteVector>(init)
+{
+}
+
 ByteVectorList &ByteVectorList::operator=(const ByteVectorList &l)
 {
   if(this == &l)
@@ -81,6 +86,12 @@ ByteVectorList &ByteVectorList::operator=(const ByteVectorList &l)
   return *this;
 }
 
+ByteVectorList &ByteVectorList::operator=(std::initializer_list<ByteVector> init)
+{
+  List<ByteVector>::operator=(init);
+  return *this;
+}
+
 ByteVector ByteVectorList::toByteVector(const ByteVector &separator) const
 {
   ByteVector v;
@@ -93,3 +104,18 @@ ByteVector ByteVectorList::toByteVector(const ByteVector &separator) const
 
   return v;
 }
+
+////////////////////////////////////////////////////////////////////////////////
+// related functions
+////////////////////////////////////////////////////////////////////////////////
+
+std::ostream &operator<<(std::ostream &s, const ByteVectorList &l)
+{
+  for(auto it = l.begin(); it != l.end(); ++it) {
+    if(it != l.begin()) {
+      s << ' ';
+    }
+    s << *it;
+  }
+  return s;
+}
diff --git a/taglib/toolkit/tbytevectorlist.h b/taglib/toolkit/tbytevectorlist.h
index f899f11c..c81f6f19 100644
--- a/taglib/toolkit/tbytevectorlist.h
+++ b/taglib/toolkit/tbytevectorlist.h
@@ -59,7 +59,13 @@ namespace TagLib {
      */
     ByteVectorList(const ByteVectorList &l);
 
+    /*!
+     * Construct a ByteVectorList with the contents of the braced initializer list.
+     */
+    ByteVectorList(std::initializer_list<ByteVector> init);
+
     ByteVectorList &operator=(const ByteVectorList &);
+    ByteVectorList &operator=(std::initializer_list<ByteVector> init);
 
     /*!
      * Convert the ByteVectorList to a ByteVector separated by \a separator.  By
@@ -83,4 +89,10 @@ namespace TagLib {
 
 }  // namespace TagLib
 
+/*!
+ * \related TagLib::ByteVectorList
+ * Send the ByteVectorList to an output stream.
+ */
+std::ostream TAGLIB_EXPORT &operator<<(std::ostream &s, const TagLib::ByteVectorList &l);
+
 #endif
diff --git a/taglib/toolkit/tlist.h b/taglib/toolkit/tlist.h
index 5c98bf08..d7a9ed25 100644
--- a/taglib/toolkit/tlist.h
+++ b/taglib/toolkit/tlist.h
@@ -73,7 +73,7 @@ namespace TagLib {
     List(const List<T> &l);
 
     /*!
-     * Construct a List with the contents of the braced initiliazer list
+     * Construct a List with the contents of the braced initializer list.
      */
     List(std::initializer_list<T> init);
 
diff --git a/taglib/toolkit/tmap.h b/taglib/toolkit/tmap.h
index fc582eb7..eb515d4a 100644
--- a/taglib/toolkit/tmap.h
+++ b/taglib/toolkit/tmap.h
@@ -212,6 +212,17 @@ namespace TagLib {
      */
     void swap(Map<Key, T> &m);
 
+    /*!
+     * Compares this map with \a m and returns true if all of the elements are
+     * the same.
+     */
+    bool operator==(const Map<Key, T> &m) const;
+
+    /*!
+     * Compares this map with \a m and returns true if the maps differ.
+     */
+    bool operator!=(const Map<Key, T> &m) const;
+
   protected:
     /*
      * If this List is being shared via implicit sharing, do a deep copy of the
diff --git a/taglib/toolkit/tmap.tcc b/taglib/toolkit/tmap.tcc
index 99115c1f..067491db 100644
--- a/taglib/toolkit/tmap.tcc
+++ b/taglib/toolkit/tmap.tcc
@@ -205,6 +205,18 @@ void Map<Key, T>::swap(Map<Key, T> &m)
   swap(d, m.d);
 }
 
+template <class Key, class T>
+bool Map<Key, T>::operator==(const Map<Key, T> &m) const
+{
+  return d->map == m.d->map;
+}
+
+template <class Key, class T>
+bool Map<Key, T>::operator!=(const Map<Key, T> &m) const
+{
+  return d->map != m.d->map;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // protected members
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/taglib/toolkit/tstringlist.cpp b/taglib/toolkit/tstringlist.cpp
index 5c833314..224afc2c 100644
--- a/taglib/toolkit/tstringlist.cpp
+++ b/taglib/toolkit/tstringlist.cpp
@@ -61,6 +61,11 @@ StringList::StringList(const StringList &l) :
 {
 }
 
+StringList::StringList(std::initializer_list<String> init) :
+  List<String>(init)
+{
+}
+
 StringList &StringList::operator=(const StringList &l)
 {
   if(this == &l)
@@ -70,6 +75,12 @@ StringList &StringList::operator=(const StringList &l)
   return *this;
 }
 
+StringList &StringList::operator=(std::initializer_list<String> init)
+{
+  List<String>::operator=(init);
+  return *this;
+}
+
 StringList::StringList(const String &s)
 {
   append(s);
diff --git a/taglib/toolkit/tstringlist.h b/taglib/toolkit/tstringlist.h
index 820b0af7..0396cde0 100644
--- a/taglib/toolkit/tstringlist.h
+++ b/taglib/toolkit/tstringlist.h
@@ -58,7 +58,13 @@ namespace TagLib {
      */
     StringList(const StringList &l);
 
+    /*!
+     * Construct a StringList with the contents of the braced initializer list.
+     */
+    StringList(std::initializer_list<String> init);
+
     StringList &operator=(const StringList &);
+    StringList &operator=(std::initializer_list<String> init);
 
     /*!
      * Constructs a StringList with \a s as a member.