Re: Displaying a string as another one

[Stefan Monnier <monnier@iro.umontreal.ca>]

> Does anyone have a ready-made solution?

You could start with something like

    (defun my-decode-\n-\t ()
      (font-lock-add-keywords nil
        '(("\\\\[nt]"
           (0 (my-apply-decode (match-beginning 0) (match-end 0)))))))

    (defun my-apply-decode (beg end)
      (when (= 0 (mod (save-excursion (goto-char beg)
                                      (skip-chars-backward "\\\\"))
                      2))
        `(face nil
          display ,(string (if (eq (char-before end) ?n) ?\n ?\t)))))

    (add-hook 'foo-mode-hook #'my-decode-\n-\t)


-- Stefan