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* lisp/master.el (master-says): Check nil argument (bug#70230).

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Lin Sun 2024-04-05 06:58:07 +00:00 committed by Eli Zaretskii
parent ae296d762b
commit c7a0e4faa2
1 changed files with 2 additions and 0 deletions
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lisp/master.el
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@ -136,6 +136,8 @@ See `recenter'."
(defun master-says (&optional command arg)
"Display slave buffer and execute COMMAND with ARG in its window."
(interactive)
(unless master-of
(error "Current buffer is not a master of any other buffer"))
(if (null (buffer-live-p (get-buffer master-of)))
(error "Slave buffer has disappeared")
(let ((window (selected-window)))