Function getBidi

docs/themes/htx/source/js/codemirror.js:3694–3698

(ch, partPos, invert)

    }

    function getBidi(ch, partPos, invert) {
      var part = order[partPos],
        right = part.level == 1;
      return get(invert ? ch - 1 : ch, right != invert);
    }
    var partPos = getBidiPartAt(order, ch, sticky);
    var other = bidiOther;
    var val = getBidi(ch, partPos, sticky == "before");