[fix] Always render parens for capitalized methods with receivers (#870)

Author: reese

fixtures/small/constant_path_callers_actual.rb

@@ -0,0 +1,26 @@
+# Call nodes don't need to disambiguate blocks
+Case
+Case()
+Case { }
+Case() { }
+Case do; end
+Case() do; end
+Case(args) { }
+Case(args) do ;end
+
+# But ConstantReadNodes must disambiguate blocks
+Test::Case
+Test::Case()
+Test::Case { }
+Test::Case() { }
+Test::Case() do; end
+Test::Case(args) { }
+Test::Case(args) do ;end
+
+Test.Case
+Test.Case()
+Test.Case { }
+Test.Case() { }
+Test.Case() do; end
+Test.Case(args) { }
+Test.Case(args) do ;end

fixtures/small/constant_path_callers_expected.rb

@@ -0,0 +1,37 @@
+# Call nodes don't need to disambiguate blocks
+Case
+Case()
+Case { }
+Case { }
+Case do
+end
+
+Case do
+end
+
+Case(args) { }
+Case(args) do
+end
+
+# But ConstantReadNodes must disambiguate blocks
+Test::Case
+Test::Case()
+Test::Case() { }
+Test::Case() { }
+Test::Case() do
+end
+
+Test::Case(args) { }
+Test::Case(args) do
+end
+
+Test.Case()
+Test.Case()
+Test.Case() { }
+Test.Case() { }
+Test.Case() do
+end
+
+Test.Case(args) { }
+Test.Case(args) do
+end

librubyfmt/src/format_prism.rs

@@ -1708,7 +1708,7 @@ fn use_parens_for_call_node<'src>(
     });
 
     if is_terminal_call && method_name.first().is_some_and(|c| c.is_ascii_uppercase()) {
-        if !has_arguments && call_node.block().is_some() {
+        if !has_arguments && call_node.block().is_some() && call_node.receiver().is_none() {
             return false;
         }
         return true;