Deviled egg macaroni pasta salad

Pasta and macaroni Italian cuisine

½ cup thinly sliced red onion ¼ cup cider vinegar 1 teaspoon sugar 8 ounces large elbow macaroni 12 hard-cooked eggs ½ cup mayonnaise 3 tablespoons country Dijon-style mustard ½ teaspoon salt ½ teaspoon smoked paprika ¼ teaspoon cracked black pepper ½ cup chopped sweet pickle 1½ cups very thinly sliced celery Smoked paprika and/or pepper (optional)