tests/headers/anon_enum_allowlist.h - third_party/github.com/rust-lang/rust-bindgen - Git at Google

 // bindgen-flags: --allowlist-var "NODE_.*" --rustified-enum ".*"

 enum {
   NODE_FLAG_FOO,
   NODE_FLAG_BAR,
 };
	// bindgen-flags: --allowlist-var "NODE_." --rustified-enum "."

	enum {
	NODE_FLAG_FOO,
	NODE_FLAG_BAR,
	};