NodeKind::HeadingHint

Wire tag: headingHint — forward-reference heading hint (［＃「target」は中見出し］).

Source examples

序章
［＃「序章」は中見出し］

The hint refers to a quoted target string in the preceding line(s); downstream renderers pick this up as “promote the matched run to a heading.”

Rendered HTML

The marker itself emits no visible content; renderers that honour the hint elevate the previously-matched span to a <h2> / <h3> retroactively. The default HTML renderer in aozora-render emits a structural marker comment.

Serialize output

Round-trips to ［＃「target」は<level>見出し］.

AST shape

pub struct HeadingHint<'src> {
    pub level: u8,
    pub target: NonEmptyStr<'src>,
}

level follows the Aozora convention: 1=大見出し, 2=中見出し, 3=小見出し.

When emitted

Phase 3 matches the directive and records the level + target. Empty target is rejected and falls through to plain text.

Diagnostics

None on well-formed input.

Related kinds

• AozoraHeading — direct heading-marker variant.