plugins/power-assert/testData/codegen/infix/RegexInfix.kt - third_party/github/JetBrains/kotlin - Git at Google

 fun box() = expectThrowableMessage {
     assert("Hello, World" matches "[A-Za-z]+".toRegex())
 }
	fun box() = expectThrowableMessage {
	assert("Hello, World" matches "[A-Za-z]+".toRegex())
	}