Enum Role 

pub enum Role {
    Body,
    Heading(u8),
    Code,
    Link,
    Mark,
    ListMarker,
    QuoteGutter,
    Rule,
    Delimiter,
    Image,
}

What a glyph is, typographically — the semantic role a frontend maps to its own presentation. Mutually exclusive per glyph (a glyph is a heading, or a link, or body text — not two at once); the compositional emphasis a run can also carry lives in Style’s bold/italic/underline/strikethrough flags alongside this.

Variants

Body

Ordinary prose — the surface’s default text.

Heading(u8)

A heading of the given level (1 = top). A GUI scales the font by level; a terminal cycles a color by it.

Code

Code — inline `verbatim` or a fenced block. A GUI renders it in a monospace family; a terminal tints it.

Link

A hyperlink’s visible text (or bare URL/email).

Mark

Highlighted / marked text (==mark==).

ListMarker

A list item’s bullet or number — synthetic decoration, not authored text.

QuoteGutter

A block quote’s gutter (│), drawn down its left edge.

Rule

A drawn rule: a thematic break (───) or a table’s borders. A GUI that draws its own tables ignores the border glyphs; the rule still reaches it.

Delimiter

Raw markup a revealed line is showing: the * around an emphasis, the # opening a heading, a link’s ](dest). Only ever emitted for the caret’s line under MarkupMode::Full — every other line resolves its markup away and has none of these.

A role rather than a Style flag because it is what the glyph is: the delimiter of an emphasis is not itself emphasised text. A frontend typically dims it, so the revealed line still reads as prose with its scaffolding visible rather than as source code. One that doesn’t map it draws it as body text, which is correct if unsubtle.

Image

A block-level image’s placeholder text (🖼 alt). The glyphs are a default rendering any surface can paint as-is (a terminal shows the label); an image-capable frontend skips the placeholder row named by the map’s ImageInfo rows_span and paints the real picture in its place — the same skip-the-picture contract Role::Rule table borders use.

Trait Implementations

impl Clone for Role

fn clone(&self) -> Role

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Role

impl Debug for Role

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

Formats the value using the given formatter.

impl Default for Role

fn default() -> Role

Returns the “default value” for a type.

impl Eq for Role

impl PartialEq for Role

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Role