"Explode" member listings for nested ACLs

[macrotex]

When "show"ing a wallet object which has a nested ACL, you see something like this:

              Type: password
           Name: testing
          Owner: ADMIN
        Get ACL: test-nested
      Store ACL: ADMIN
     Created by: user@example.com
   Created from: 1.1.1.1
     Created on: 2020-02-13 21:38:57
      Stored by: user@example.com
    Stored from: 1.1.1.1
      Stored on: 2020-02-13 21:49:05

Members of ACL ADMIN (id: 1) are:
  krb5 user@example.com

Members of ACL test-nested (id: 9) are:
  nested group/test1
  nested group/test2

However, is is often the case that I want to see not just the members of the group but the members of the members, and so on down:

              Type: password
           Name: testing
          Owner: ADMIN
        Get ACL: test-nested
      Store ACL: ADMIN
     Created by: user@example.com
   Created from: 1.1.1.1
     Created on: 2020-02-13 21:38:57
      Stored by: user@example.com
    Stored from: 1.1.1.1
      Stored on: 2020-02-13 21:49:05

Members of ACL ADMIN (id: 1) are:
  krb5 user@example.com

Members of ACL test-nested (id: 9) are:
  nested group/test1
    krb5 user@example.com
    krb5 user2@example.com
  nested group/test2
    krb5 user2@example.com
    krb5 user3@example.com

It would be helpful if there was an option to show this expanded list.

[ljl-geek]

A '-e' option for showing extended ACLs would be a handy way to show the nesting.