Format named constructor calls in enum value constructors. (#1443)

diff --git a/lib/src/front_end/ast_node_visitor.dart b/lib/src/front_end/ast_node_visitor.dart
index d6e9c1a..e1fe5d3 100644
--- a/lib/src/front_end/ast_node_visitor.dart
+++ b/lib/src/front_end/ast_node_visitor.dart
@@ -445,6 +445,14 @@
   }
 
   @override
+  Piece visitConstructorSelector(ConstructorSelector node) {
+    return buildPiece((b) {
+      b.token(node.period);
+      b.visit(node.name);
+    });
+  }
+
+  @override
   Piece visitContinueStatement(ContinueStatement node) {
     return createBreak(node.continueKeyword, node.label, node.semicolon);
   }
diff --git a/lib/src/front_end/piece_factory.dart b/lib/src/front_end/piece_factory.dart
index 472d610..1182412 100644
--- a/lib/src/front_end/piece_factory.dart
+++ b/lib/src/front_end/piece_factory.dart
@@ -310,6 +310,7 @@
       b.token(node.name);
       if (node.arguments case var arguments?) {
         b.visit(arguments.typeArguments);
+        b.visit(arguments.constructorSelector);
         b.visit(arguments.argumentList);
       }
 
diff --git a/test/tall/declaration/enum.unit b/test/tall/declaration/enum.unit
index eb7b73a..82efdf1 100644
--- a/test/tall/declaration/enum.unit
+++ b/test/tall/declaration/enum.unit
@@ -94,6 +94,22 @@
     anotherNamed: argumentValue,
   ),
 }
+>>> Named constructor in value.
+enum Things {
+  unsplit.name(argument),
+  private._(argument),
+  splitInArgumentList.longerName(argument),
+  generic<int>.name(argument)
+}
+<<<
+enum Things {
+  unsplit.name(argument),
+  private._(argument),
+  splitInArgumentList.longerName(
+    argument,
+  ),
+  generic<int>.name(argument),
+}
 >>> Generic enum type.
 enum MagicNumbers< T    extends num   ,   S> {
   one(1), two(2),pi<double,String>(3.14159)