Hello,
A solution to my problem was indeed given in this web page
[[https://www.emacswiki.org/emacs/AutoInsertMode]]:
#+BEGIN_SRC
#+BEGIN_QUOTE
(auto-insert-mode) ;;; Adds hook to find-files-hook
(setq auto-insert-directory "~/.mytemplates/") ;;; Or use custom, *NOTE*
Trailing slash important
(setq auto-insert-query nil) ;;; If you don't want to be prompted before
insertion
(define-auto-insert "\.py" "my-python-template.py")
(define-auto-insert "\.php" "my-php-template.php")
#+END_SRC
It should not be too difficult, even for me, to adapt this code that I
just tested.
Best wishes,
--
Jo.