src/awesomewmdtl/ast.tl

@@ -95,7 +95,14 @@ local function merge_nodes(node: Node, other: Node): Node
    end
 
    -- Children should be merged
+   local children: { string : integer } = {}
+   for i, child in ipairs(node.children) do
+      children[child.name] = i
+   end
    for _, child in ipairs(other.children) do
+      if children[child.name] ~= nil then
+         table.remove(node.children, children[child.name])
+      end
       table.insert(node.children, child)
    end