Access to the render function from a custom highlight function

[simondean]

Hi. I've trying to use markdown-it together with the https://www.npmjs.com/package/markdown-it-attrs extension.

I'm passing a custom highlight function to markdown-it to generate custom code block HTML

var md = markdownIt({
        linkify: true, html: true,
        highlight: function (str, lang) {
            if (highlightJs.getLanguage(lang)) {
                try {
                    return '<pre class="highlight lang-' + lang + '"><code>' +
                        highlightJs.highlight(lang, str, true).value +
                        '</code></pre>';
                } catch (__) { }
            }

            return '<pre class="highlight"><code>' + md.utils.escapeHtml(str) + '</code></pre>';
        }
    })
    .use(markdownItAttrs);

The problem I'm facing is that there's no way to access markdown-it's slf.renderAttrs(token) from within a custom highlight function. Because I can't access slf.renderAttrs(token), there's no way for to take advantage of the rendering that the https://www.npmjs.com/package/markdown-it-attrs extension provides.

I can think of a couple of ways of solving this:

• markdown-it passes the slf object as a new third argument when it calls a custom highlight function.
• markdown-it makes either slf or slf.renderAttrs(token) available on this when it calls a custom highlight function.

I've created some custom code for this issue here:

• https://github.com/simondean/markdown-it-issues/blob/master/highlight-attrs/index.js

[puzrin]

IMHO this request is too specific. You can override fenced renderer as you wish if default features are not enougth.

[simondean]

Thanks for the feedback @puzrin. I'll raise an issue on issue tracker for the extension https://github.com/arve0/markdown-it-attrs