src/language-html/printer-html.js/needsToBorrowParentOpeningTagEndMarker
function needsToBorrowParentOpeningTagEndMarker(node) {
  /**
   *     <p
   *       >123
   *       ^
   *
   *     <p
   *       ><a
   *       ^
   */
  return !node.prev && node.isLeadingSpaceSensitive && !node.hasLeadingSpaces;
}