Function lineLength

static/js/codemirror/codemirror.js:270–286

(doc, line)

  }

  function lineLength(doc, line) {
    if (line.height == 0) return 0;
    var len = line.text.length, merged, cur = line;
    while (merged = collapsedSpanAtStart(cur)) {
      var found = merged.find();
      cur = getLine(doc, found.from.line);
      len += found.from.ch - found.to.ch;
    }
    cur = line;
    while (merged = collapsedSpanAtEnd(cur)) {
      var found = merged.find();
      len -= cur.text.length - found.from.ch;
      cur = getLine(doc, found.to.line);
      len += cur.text.length - found.to.ch;
    }
    return len;
  }

  function computeMaxLength(cm) {
    var d = cm.display, doc = cm.doc;