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+;;; my-url-rewrite.el -- My customisation of url-rewrite -*- lexical-binding: t -*-
+
+;; Copyright (C) 2023  Free Software Foundation, Inc.
+
+;; Author: Yuchen Pei <id@ypei.org>
+;; Package-Requires: ((emacs "28.2") (url-rewrite))
+
+;; This file is part of dotted.
+
+;; dotted is free software: you can redistribute it and/or modify it under
+;; the terms of the GNU Affero General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; dotted is distributed in the hope that it will be useful, but WITHOUT
+;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+;; or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General
+;; Public License for more details.
+
+;; You should have received a copy of the GNU Affero General Public
+;; License along with dotted.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; My customisation of url-rewrite.
+
+;;; Code:
+
+(require 'url-rewrite)
+
+(defun my-url-strip-drw-tracking-params (url)
+  "Strip tracking params in a DRW's email newsletter URL.
+
+For use in `tracli-url-rewriter'."
+  (let ((urlobj (url-generic-parse-url url)))
+    (url-rw-remove-query
+     urlobj
+     (regexp-opt
+      '("can_id" "source" "email_referrer" "email_subject" "link_id"
+        "utm_source" "utm_medium" "utm_campaign" "utm_content" "utm_term")))
+    (url-recreate-url urlobj)))
+
+(provide 'my-url-rewrite)
+;;; my-url-rewrite.el ends here