>>451
適当にフィルタ関数を自分で書いて，対応するorg-export-filter-*-functionsに
add-to-listするのはどうでしょうか？

(defun my-orgexp-html-filter-timestamp-remove-paren (text backend info)
(when (org-export-derived-backend-p backend 'html)
;; ここで適当に`text'に対するフィルタを書く
(setq text (replace-regexp-in-string "<[^>]*>" "" text))
(replace-regexp-in-string (regexp-opt-charset '(?< ?> ?\[ ?\])) "" text)))

(add-to-list 'org-export-filter-timestamp-functions
'my-orgexp-html-filter-timestamp-remove-paren)