quarkus: Repeated @InterceptorBinding are ignored by arc-processor

I struggled for a while today with a repeatable interceptor binding that was ignored by arc-processor until I found in debug mode why it is ignored.

Let’s assume the interceptor binding looks like this:

@InterceptorBinding
@Retention(RetentionPolicy.RUNTIME)
@Target({ ElementType.TYPE, ElementType.METHOD })
@Repeatable(Bar.class)
public @interface Foo {

    @Nonbinding
    String someValue() default "";

    @Retention(RetentionPolicy.RUNTIME)
    @Target(ElementType.METHOD)
    @interface Bar {
        Foo[] value();
    }
}

And is used that way:

@ApplicationScoped
public class EmptyService {
    @Foo(someValue = "one")
    @Foo(someValue = "two")
    public void doSomething() {
    }
}

Then, in the following code the repeated interceptor bindings will be ignored because beanDeployment doesn’t know any interceptor binding named Foo$Bar: https://github.com/quarkusio/quarkus/blob/dda2f83a1c0b1ca65884e4a0b65fc80070e57418/independent-projects/arc/processor/src/main/java/io/quarkus/arc/processor/Methods.java#L158-L160

Here’s the value of methodAnnotations during the code execution:

[@Bar(value = [@Foo(someValue = "1"),@Foo(someValue = "2")])]

@mkouba Am I wrong trying to use repeatable interceptor bindings or is this a bug? It currently works when the bindings are added using an AnnotationsTransformer but I’d like it to work without the transformer as well.