awesome: arbitrary expressions excepted without braces

packages/core-macro/src/lib.rs

@@ -177,11 +177,12 @@ pub fn derive_typed_builder(input: proc_macro::TokenStream) -> proc_macro::Token
 ///     todo!()
 /// }
 /// ```
+#[proc_macro_error::proc_macro_error]
 #[proc_macro]
 pub fn rsx(s: TokenStream) -> TokenStream {
     match syn::parse::<rsx::CallBody>(s) {
-        Err(e) => e.to_compile_error().into(),
-        Ok(s) => s.to_token_stream().into(),
+        Err(err) => err.to_compile_error().into(),
+        Ok(stream) => stream.to_token_stream().into(),
     }
 }