+
+gchar*
+modest_text_utils_remove_duplicate_addresses (const gchar *address_list)
+{
+ GSList *addresses, *cursor;
+ GHashTable *table;
+ gchar *new_list;
+
+ g_return_val_if_fail (address_list, NULL);
+
+ table = g_hash_table_new (g_str_hash, g_str_equal);
+ addresses = modest_text_utils_split_addresses_list (address_list);
+
+ new_list = g_strdup("");
+ cursor = addresses;
+ while (cursor) {
+ const gchar* address = (const gchar*)cursor->data;
+
+ /* ignore the address if already seen */
+ if (g_hash_table_lookup (table, address) == 0) {
+
+ gchar *tmp = g_strjoin (",", new_list, address, NULL);
+ g_free (new_list);
+ new_list = tmp;
+
+ g_hash_table_insert (table, (gchar*)address, GINT_TO_POINTER(1));
+ }
+ cursor = g_slist_next (cursor);
+ }
+
+ g_hash_table_destroy (table);
+ g_slist_foreach (addresses, (GFunc)g_free, NULL);
+ g_slist_free (addresses);
+
+ return new_list;
+}
+
+