--- /dev/null
+// rustfmt-normalize_comments: true
+// rustfmt-format_code_in_doc_comments: true
+
+// Do not unindent macro calls in comment with unformattable syntax.
+//! ```rust
+//! let x = 3 ;
+//! some_macro!(pub fn fn foo() (
+//! println!("Don't unindent me!");
+//! ));
+//! ```
+
+// Format items that appear as arguments of macro call.
+//! ```rust
+//! let x = 3 ;
+//! some_macro!(pub fn foo() {
+//! println!("Don't unindent me!");
+//! });
+//! ```