Enum DiffOutcome 

#[non_exhaustive]
pub enum DiffOutcome {
    Accept,
    Reject,
}

D.6.e (2026-05-31): resolution signal fired through a DiffSession’s completion channel when the user invokes :diff-accept / :diff-reject. Consumed by the future openDiff plugin flow (Claude Code, AI multi-file edits) and by any in-tree consumer (magit plugin, AI proposals) that wants to know how the user resolved a session.

#[non_exhaustive] so future variants — notably the Partial(Vec<HunkId>) case from the design doc, which would require per-hunk acceptance tracking — can be added without breaking exhaustiveness in pattern-match consumers.

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.

Accept

User confirmed they’re done reviewing; the buffer’s current content (whatever they applied via do/dp or left alone) is the accepted resolution. Plugins typically commit the active buffer’s rope on receiving this.

Reject

User dismissed the session without committing. Plugins should revert to pre-session state if they modified the buffer for the diff display.

Trait Implementations

impl Clone for DiffOutcome

fn clone(&self) -> DiffOutcome

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DiffOutcome

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

Formats the value using the given formatter.

impl Eq for DiffOutcome

impl PartialEq for DiffOutcome

fn eq(&self, other: &DiffOutcome) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for DiffOutcome