less major mode indentation

less.el

(defun less-css-calculate-indentation ()
  "Return the column to which the current line should be indented."
  (save-excursion
    (end-of-line)
    (let ((indent-level 0))
      (while (not (bobp))
        ;; TODO search backwards
        (backward-char)
        (cond ((looking-at "{") (setq indent-level (+ 1 indent-level)))
              ((looking-at "}") (setq indent-level (- indent-level 1)))))
      indent-level)))