;;; -*- lexical-binding: t -*-
;;
;; this file:
;;   https://dataswamp.org/~incal/emacs-init/regexp.el

(require 'dwim)

(defun replace-regexp-1 (re rep &optional beg end rev)
  (interactive
   `(,(read-string "regexp: ")
     ,(read-string "replace: ")
     ,@(use-region)
     ,current-prefix-arg))
  (or beg (setq beg (point-min)))
  (or end (setq end (point-max)))
  (pcase-let ((`(,start ,sfun ,stop)
               (if rev
                   (list end #'re-search-backward beg)
                 (list beg #'re-search-forward end) )))
    (save-excursion
      (goto-char start)
      (let ((c 0))
        (while (apply sfun re stop '(t))
          (cl-incf c)
          (replace-match rep) )
        (message "replaced: %d" c) ))))

(defalias 'rr #'replace-regexp-1)

(provide 'regexp)