Function charDistanceBetween

lib/tern.js:613–620

(file, start, end)

  };

  function charDistanceBetween(file, start, end) {
    var diff = end - start, m;
    if (file.hasAstral) {
      astral.lastIndex = start;
      while ((m = astral.exec(file.text)) && m.index < end) diff--;
    }
    return diff;
  }

  function asLineChar(file, pos) {
    if (!file) return {line: 0, ch: 0};