Good afternoon. Difficulties with creating a regular expression for this function. Interested in finding a double quotation mark or back quotation mark. Attempts at use were unsuccessful:

(re-search-forward "\"\\|`" $z_poz t)
(re-search-forward "\"\|`" $z_poz t)
(re-search-forward "\"|`" $z_poz t)

The alternative character is followed by a back quotation mark. Thank you.

  • Your first attempt was correct (assuming you wish to search for either " or `), so your problem isn't what you think it is. What is your problem?
    – phils
    Commented Jun 27, 2022 at 10:08
  • Yes you are right, the errors were not in the regular expression
    – uanr81
    Commented Jun 27, 2022 at 19:54
  • Thanks for editing Muihlinn, I couldn't insert a back quotation mark
    – uanr81
    Commented Jun 27, 2022 at 19:59
  • 1
    I’m voting to close this question because the problem has been left unstated.
    – phils
    Commented Jun 27, 2022 at 20:39

2 Answers 2


You need to use


for the regexp part.

It is easier to build regular expressions with rx or rx-to-string.

Here is a demo using M-x ielm.

*** Welcome to IELM ***  Type (describe-mode) or press C-h m for help.
ELISP> (rx-to-string '(or "`" "\""))
  • They don't "need" to use that. What they did initially was equally valid.
    – phils
    Commented Jun 27, 2022 at 10:11
  • rx is the way to go; you’ll soon get LTS otherwise.
    – db48x
    Commented Jun 27, 2022 at 12:11
  • As far as you know, the inverse of a character class doesn't really matter.
    – uanr81
    Commented Jun 27, 2022 at 13:55

The function does work with the expression, the mistake was poor tracking of the position of the point. Below code

    (defun otmKvhk()
      "Отметка выражений в кавычках
    Обрабатывается выделенный регион
    Отмечается только крайние кавычки, вложения пропускаются,
    начало соответствия 'bbo# ', конец ' #obb'"
      (let ((n_pozRgn (region-beginning)) (z_pozRgn (region-end)) n_svpd k_svpd)
        (goto-char n_pozRgn)
        (while (setq n_svpd (re-search-forward "\"\\|`" z_pozRgn t))
          (let ((data (match-data)))
            (if (setq k_svpd (search-forward (match-string-no-properties 0) z_pozRgn t))
            (progn (insert " #obb")
                   (setq k_svpd (+ 5 k_svpd))
                   (setq n_svpd (- n_svpd 1))
                   (goto-char n_svpd)
                   (insert "bbo# ")
                   (setq k_svpd (+ 5 k_svpd))
                   (goto-char k_svpd)
                   (setq z_pozRgn (+ 10 z_pozRgn)))
              (error "%s" "Не найдено соответствие!")
          (set-match-data data)))
        (goto-char z_pozRgn))
  • n.b. C-h f save-match-data
    – phils
    Commented Jun 27, 2022 at 20:42

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