Randomized set

Can /set node node2 node3 and it will randomly choose between those
three.

worldedit/manipulations.lua

@@ -24,7 +24,11 @@ worldedit.volume = function(pos1, pos2)
 end
 
 --sets a region defined by positions `pos1` and `pos2` to `nodename`, returning the number of nodes filled
-worldedit.set = function(pos1, pos2, nodename)
+worldedit.set = function(pos1, pos2, nodenames)
+    if type(nodenames) == 'string' then
+        nodenames = {nodenames}
+    end
+
 	local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
 
 	--set up voxel manipulator
@@ -40,9 +44,12 @@ worldedit.set = function(pos1, pos2, nodename)
 	end
 
 	--fill selected area with node
-	local node_id = minetest.get_content_id(nodename)
+	local node_ids = {}
+    for i,v in ipairs(nodenames) do
+        node_ids[i] = minetest.get_content_id(nodenames[i])
+    end
 	for i in area:iterp(pos1, pos2) do
-		nodes[i] = node_id
+		nodes[i] = node_ids[math.random(#node_ids)]
 	end
 
 	--update map nodes

worldedit_commands/init.lua

@@ -278,22 +278,26 @@ minetest.register_chatcommand("/volume", {
 	end,
 })
 
-local check_set = function(name, param)
-	local node = get_node(name, param)
-	if not node then return nil end
-	return check_region(name, param)
-end
-
 minetest.register_chatcommand("/set", {
 	params = "<node>",
 	description = "Set the current WorldEdit region to <node>",
 	privs = {worldedit=true},
 	func = safe_region(function(name, param)
+        local nodes = {}
+
+        for nodename in param:gmatch("[^%s]+") do
+            local node = get_node(name, nodename)
+            if not node then
+                worldedit.player_notify(name, 'Could not identify node "'..name..'"')
+                return
+            end
+            nodes[#nodes+1] = node
+        end
+
 		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
-		local node = get_node(name, param)
-		local count = worldedit.set(pos1, pos2, node)
+		local count = worldedit.set(pos1, pos2, nodes)
 		worldedit.player_notify(name, count .. " nodes set")
-	end, check_set),
+	end, check_region),
 })
 
 local check_replace = function(name, param)