Under "Validation": "Field Selection Merging", the spec says that merging of fields is only valid when they have identical field names and arguments. However, I don't see anywhere where it addresses what to do about directives.

For each of the following, is the query valid? If so, how should it be interpreted after merging?

Case 1: one field has a directive and the other does not

{ sample { text @example text } } 

Case 2: both fields have the same directive

{ sample { text @example text @example } } 

Case 3: both fields have the same directive, but with different arguments

{ sample { text @example(arg: 1) text @example(arg: 2) } } 

Case 4: each field has different directives

{ sample { text @example1 text @example2 } } 

Case 5: each field has the same directives but in different orders

{ sample { text @example1 @example2 text @example2 @example1 } } 

I recognize that the answers may depend on the outcomes of several pending RFCs:

• [RFC] "Directive order is significant" section #470 might affect case 5
• [RFC] Limit uniqueness to @skip, @include and @deprecated directives #471 [RFC] Repeatable directives #472 might affect cases 2, 3, 4, and 5