aliases don't render in grouping directives

Question

For the following UML, I would expect Box 1 to show Request 1 and Request 2 much like Box 2 does. Box 1 shows up empty with Request 1 pointing to Request 2 outside it.

@startuml
[Request 1] as r1
[Request 2] as r2
rectangle "Box 1" {
  r1 -> r2
}
Rectangle "Box 2" {
  [Request 1]
  [Request 2]
}
@enduml

Comments

I have the same problem, very annoying when you have a lot of aliases for long names (in my case in a usecase diagram).

Answer 1

Looks like I've just found the solution : you have to declare your aliases inside the grouping directive, and it will also work outside of the package. You can even declare only the aliases in the package. With your example, it would give :

@startuml
rectangle "Box 1" {
  [Request 1] as r1
  [Request 2] as r2
}
r1 -> r2
Rectangle "Box 2" {
  [Request 1]
  [Request 2]
}
@enduml