Enum RebindVerdict 

#[non_exhaustive]
pub enum RebindVerdict<'a, A> {
    BreaksReserved {
        reserved: KeyInput,
        reason: BreakReason,
    },
    Allowed {
        shadows: Option<&'a A>,
        legacy: LegacyForm,
    },
}

What validate_rebind concluded.

This is #[non_exhaustive] so that additive verdicts (e.g. an advisory “allowed but unreachable on legacy terminals”) can be added without breaking callers. Match both arms with an explicit binding for all known fields so the compiler surfaces any future field additions.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

BreaksReserved

Refused. The proposed chord would break the caller’s escape hatch.

Fields

reserved: KeyInput

The reserved key whose resolution would be stolen.

reason: BreakReason

The structural reason the rebind is refused.

Allowed

Allowed. The rebind does not threaten any reserved key.

Fields

shadows: Option<&'a A>

The action that proposed currently resolves to via the layer stack, if any. Some(&a) means the rebind would silently override that action in the target layer — worth surfacing in a UI.

legacy: LegacyForm

How proposed fares on a legacy 7-bit C0 terminal. This is carried here so the caller can surface the legacy story alongside the safety verdict in a single call.

Trait Implementations

impl<'a, A: Debug> Debug for RebindVerdict<'a, A>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.