Struct Span 

pub struct Span {
    pub line: u16,
    pub left: u16,
    pub right: u16,
    pub cells: Vec<Cell>,
    pub combining: BTreeMap<usize, NonZeroU32>,
    pub links: BTreeMap<usize, NonZeroU32>,
    pub ucolors: BTreeMap<usize, Color>,
}

A damaged column run on one line, with its cells.

combining and links map a span-relative column to its frame-local index (1-based) — combining into Frame::side_table, links into Frame::link_table. These are the per-cell extra/link references lifted out of the cell now that combining clusters (#45) and hyperlinks (#46) live in per-row maps. A column is present iff its cell carries the matching bit; on the wire they are the cell record’s extra/link fields, so the bytes are unchanged.

Fields

line: u16

left: u16

right: u16

cells: Vec<Cell>

combining: BTreeMap<usize, NonZeroU32>

links: BTreeMap<usize, NonZeroU32>

ucolors: BTreeMap<usize, Color>

Underline colours (SGR 58, #520): span-relative column → the Color reference the cell’s coloured underline draws in. Sparse — only cells that carry a non-default underline colour appear (gated on the UNDERLINE attribute at parse time). Unlike combining/links this is a colour reference, not a side-table index, so it ships inline (no _table on the Frame). Kept off the per-cell record so a plain-text frame pays nothing (ADR-0020: no inert per-cell payload).

Trait Implementations

impl Clone for Span

fn clone(&self) -> Span

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Span

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

Formats the value using the given formatter.

impl Eq for Span

impl PartialEq for Span

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Span