A hidden port cannot be filled through the bundle
Decomposition filters on connectable alone, so a hidden port's key can survive the unpacking. Resolution then applies the exposure gate a second time. Two guards, one outcome: a hidden port is not fillable, by any route.
The rule
Normative: this is the rule
- Decomposition of the unified
inputport (CFG-16) admits a key on the strength ofconnectablealone. - A value that reaches a hidden connectable port this way is still discarded when the parameter is resolved, because priority 1 requires the port to be exposed (CFG-4).
- Bundling a value must never fill a port that could not be wired directly.
Rule identifiers are permanent and are never renumbered. Each implementation publishes its own standing against these rules; this specification does not.spec 1.0-draft · CFG-17 · changed in spec 1.0