Struct RefineSpan 

pub struct RefineSpan {
    pub start: usize,
    pub end: usize,
    pub kind: RefineKind,
}

DR.2 (2026-08-12): a byte range whose background differs from its row’s — intra-line diff refinement.

A second, independent axis from StyledSpan, and deliberately a separate type rather than a bg field on that one. The foreground axis resolves by first-match-wins over a concatenated list; a background is a different question with different precedence, and fusing them would force every existing span producer to have an opinion about a concern it does not have.

See docs/dev/architecture/diff-refinement.md §3 and span-layering.md §1 (the two-axis contract this extends).

Fields

start: usize

Byte offset within the line where the span starts.

end: usize

Byte offset within the line (exclusive).

kind: RefineKind

Trait Implementations

impl Clone for RefineSpan

fn clone(&self) -> RefineSpan

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RefineSpan

impl Debug for RefineSpan

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

Formats the value using the given formatter.

impl Eq for RefineSpan

impl PartialEq for RefineSpan

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RefineSpan