Function addCopyText

src/javascript/config.js:3–21

(math, doc)

// Makes text selectable
MathJax = {
  addCopyText(math, doc) {
      if (math.state() < MathJax.STATE.ADDTEXT) {
          if (!math.isEscaped) {
              const adaptor = doc.adaptor;
              const text = adaptor.node('span', {'aria-hidden': true, 'class': 'mathjax_ignore mjx-copytext'}, [
                adaptor.text(math.start.delim + math.math + math.end.delim)
              ]);
              adaptor.append(math.typesetRoot, text);
              // Insert thin space(s) if math is at begin or end of text
              if (math.start.n == 0) {
                  adaptor.insert(adaptor.text('\u200A'), adaptor.firstChild(math.typesetRoot));
              }
              if (math.end.n == math.end.node.length) {
                  adaptor.append(math.typesetRoot, adaptor.text('\u200A'));
              }
          }
          math.state(MathJax.STATE.ADDTEXT);
      }
  },
  startup: {
      ready() {
        const {newState, STATE} = MathJax._.core.MathItem;