1 files changed, 26 insertions, 1 deletions
diff --git a/source/blender/nodes/function/nodes/node_fn_combine_strings.cc b/source/blender/nodes/function/nodes/node_fn_combine_strings.cc
index 1b6091451d9..a545c4f0749 100644
--- a/source/blender/nodes/function/nodes/node_fn_combine_strings.cc
+++ b/source/blender/nodes/function/nodes/node_fn_combine_strings.cc
@@ -1,4 +1,20 @@
-#include "node_function_util.h"
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include "node_function_util.hh"
 
 static bNodeSocketTemplate fn_node_combine_strings_in[] = {
     {SOCK_STRING, N_("A")},
@@ -11,11 +27,20 @@ static bNodeSocketTemplate fn_node_combine_strings_out[] = {
     {-1, ""},
 };
 
+static void fn_node_combine_strings_expand_in_mf_network(
+    blender::nodes::NodeMFNetworkBuilder &builder)
+{
+  static blender::fn::CustomMF_SI_SI_SO<std::string, std::string, std::string> combine_fn{
+      "Combine Strings", [](const std::string &a, const std::string &b) { return a + b; }};
+  builder.set_matching_fn(combine_fn);
+}
+
 void register_node_type_fn_combine_strings()
 {
   static bNodeType ntype;
 
   fn_node_type_base(&ntype, FN_NODE_COMBINE_STRINGS, "Combine Strings", 0, 0);
   node_type_socket_templates(&ntype, fn_node_combine_strings_in, fn_node_combine_strings_out);
+  ntype.expand_in_mf_network = fn_node_combine_strings_expand_in_mf_network;
   nodeRegisterType(&ntype);
 }