Node editor: when adding a new node, automatic links are created:

- from all selected nodes
- only connections between highest order socket types; so if there's RGBA
  and Value sockets, only RGBA sockets are connected. This because in
  these cases the Value sockets usually are for user input.
  Example: Mix node.

Thanks Trip for the hint!

1 files changed, 2 insertions, 0 deletions

diff --git a/source/blender/makesdna/DNA_node_types.h b/source/blender/makesdna/DNA_node_types.h
index 034369f6fe2..6a31dfebf01 100644
--- a/source/blender/makesdna/DNA_node_types.h
+++ b/source/blender/makesdna/DNA_node_types.h
@@ -140,6 +140,8 @@ typedef struct bNode {
 #define NODE_ACTIVE_ID		32
 #define NODE_DO_OUTPUT		64
 #define NODE_GROUP_EDIT		128
+		/* free test flag, undefined */
+#define NODE_TEST			256
 
 typedef struct bNodeLink {
 	struct bNodeLink *next, *prev;