Hand-rolled recursive-descent parser over the token stream. Resilient
per SPEC §6.7: never aborts the document — anything the dispatcher
can't claim becomes BlockNode::Error and the cursor advances, and
unterminated wikilinks / transclusions / delimiters fall back to
literal text.
Block coverage: every variant from §6.4 — Heading (with inline
content between markers), Paragraph (with soft-break across single
newlines), HorizontalRule, Blockquote (both `>` and 4-space styles),
Preformatted, MathBlock, List (with checkbox + indent-driven
sublists), DefinitionList, Table (header separator promotes the
preceding row, plus colspan / rowspan cells), Comment (single +
multiline), and page-level placeholders threaded into PageMetadata.
Inline pairing: left-to-right scan with "find next matching delim",
recursing on the slice between. `_*x*_` becomes Italic(Bold(...)),
mirroring SPEC §6.7 precedence. URLs inside `[[ ]]` route to
ExternalLinkNode; everything else to WikiLinkNode with full
LinkTarget classification (Wiki / Interwiki numbered + named /
Diary / File / Local / AnchorOnly / directory / root-relative /
filesystem-absolute).
VimwikiSyntax registers as id="vimwiki", extensions=[".wiki"] and
chains lexer + parser inside SyntaxPlugin::parse.
SPEC §4 updated to record the hand-rolled choice with rationale —
span-bearing tokens fit awkwardly into winnow/nom combinator style;
resilience and recovery are explicit in code instead.
Tests (41 new parser cases) cover every AST construct, inline
precedence including nested bold/italic, every LinkKind, transclusion
alt + attrs, resilience on unterminated links, and end-to-end
SyntaxRegistry dispatch.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
gffranco
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