Added overload for properties-only shorthand

spec/kdl/builder_spec.cr

@@ -52,7 +52,7 @@ describe KDL::Builder do
       KDL
     end
 
-    it "builds a node with a single argument" do
+    it "builds a node with a single shorthand argument" do
       doc = KDL.build do |kdl|
         kdl.node "snorlax" do
           kdl.node "size", 10_i64
@@ -69,7 +69,18 @@ describe KDL::Builder do
       KDL
     end
 
-    it "builds a node with multiple arguments and properties" do
+    it "builds a node with shorthand properties" do
+      doc = KDL.build do |kdl|
+        kdl.node "pokemon", pokemon_type: "normal", level: 10_i64
+      end
+
+      doc.to_s.should eq <<-KDL
+      pokemon pokemon_type=normal level=10
+
+      KDL
+    end
+
+    it "builds a node with multiple shorthand arguments and properties" do
       doc = KDL.build do |kdl|
         kdl.node "pokemon", "snorlax", "jigglypuff", pokemon_type: "normal", level: 10_i64
       end

src/kdl/builder.cr

@@ -30,13 +30,26 @@ module KDL
       end
     end
 
-    def node(name : String, *arguments, type : String? = nil, comment : String? = nil)
+    def node(name : String, *, type : String? = nil, comment : String? = nil)
+      node name, type: type, comment: comment do
+      end
+    end
+
+    # Bug: https://github.com/crystal-lang/crystal/issues/15484, separate overload needed for splats
+    def node(name : String, *arguments : KDL::Value::Type, type : String? = nil, comment : String? = nil)
       node name, type: type, comment: comment do
         arguments.each &->arg(KDL::Value::Type)
       end
     end
 
-    # Bug: https://github.com/crystal-lang/crystal/issues/15484, separate overload needed for double splat
+    # :ditto:
+    def node(name : String, *, type : String? = nil, comment : String? = nil, **properties : KDL::Value::Type)
+      node name, type: type, comment: comment do
+        properties.each &->prop(Symbol, KDL::Value::Type)
+      end
+    end
+
+    # :ditto:
     def node(name : String, *arguments : KDL::Value::Type, type : String? = nil, comment : String? = nil, **properties : KDL::Value::Type)
       node name, type: type, comment: comment do
         arguments.each &->arg(KDL::Value::Type)