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Add native links and reverse references to syntax diagrams - #809
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Syntax diagrams currently rely on JavaScript to match nonterminal names to rule headings. They also display helper symbols generated for midrule actions.
Use
RailroadDiagrams::Document#rule_sectionsfromrailroad_diagrams1.0.0 or later to add native SVG links and a “Referenced by” list to the standard--diagramoutput. Replace the existing JavaScript navigation with fragment links.Omit midrule action helper rules (
$@nand@n) and their references while retaining user-defined empty rules. Preserve rule and alternative order, and filter copies of rules to avoid changing the grammar used for parser generation.