Function processHighlight

public/js/markdown.js:310–351

(elements)

}

async function processHighlight(elements) {
	if (parseInt(config.markdown.highlight, 10)) {
		const hljs = window.hljs;
		if (!hljs) {
			console.debug(`[plugins/markdown] Tryin to highlight without initializing hljs`);
			return;
		}

		console.debug(`[plugins/markdown] Loading support for line numbers`);

		require('highlightjs-line-numbers.js');

		elements.each(function (i, block) {
			const parentNode = $(block.parentNode);
			if (parentNode.hasClass('markdown-highlight')) {
				return;
			}
			parentNode.addClass('markdown-highlight');

			// Default language if set in ACP
			if (!Array.prototype.some.call(block.classList, (className) => className.startsWith('language-')) && config.markdown.defaultHighlightLanguage) {
				block.classList.add(`language-${config.markdown.defaultHighlightLanguage}`);
			}

			window.hljs.highlightElement(block);

			// Check detected language against whitelist and add lines if enabled
			const classIterator = block.classList.values();
			for (const className of classIterator) {
				if (className.startsWith('language-')) {
					const language = className.split('-')[1];
					const list = config.markdown.highlightLinesLanguageList;
					if (aliasMap.has(language) && list && list.includes(aliasMap.get(language))) {
						$(block).attr('data-lines', 1);
						window.hljs.lineNumbersBlock(block);
					}
					break;
				}
			}
		});
	}
}