https://github.com/for-GET/core-pegjs/commit/77f45661722cd93560daca02d4af774e05d28b63#diff-f46e51c936af3fe21202147d8d457c84R108 should also cover the case of concatenated strings like in https://github.com/for-GET/core-pegjs/commit/a8ec2314bb14006d7aa835c8ebfddf664b3a0a15#diff-f46e51c936af3fe21202147d8d457c84R1343