Struct ActionRegsGuard 

pub struct ActionRegsGuard;

Empty RAII guard — vestigial after MG.13.

It used to hold a Vec<ActionHandlerRegistration>, and its doc comment already named the hazard that motivated MG.13: “two buffers of the same major mode open at once silently let the second’s on_activate replace the first’s handler (registry is last-write-wins per CommandId), so firing the chord in buffer A can execute buffer B’s captured state against A’s cursor.”

Holding the tokens bounded the damage — the guard unregistered on close — but could not prevent it, because the registry has no buffer dimension: two live registrations of one CommandId cannot coexist no matter who owns the tokens. MG.13 removes the hazard at the source instead: every magit handler is registered once at boot via Mode::action_handlers() and resolves per-buffer state from a service at call time, so there is nothing per-activation left to unwind. Kept only because Mode requires an associated Guard.

Trait Implementations

impl Default for ActionRegsGuard

fn default() -> ActionRegsGuard

Returns the “default value” for a type.