(describe-package-1): Fix bug#69712

* lisp/emacs-lisp/package.el (describe-package-1): Improve the test to
determine if `maintainers` contains a single cons or a list of conses.

(cherry picked from commit 0f04aa06a69cb82eb66d5ffd46700ffdbd58b8f3)

diff --git a/lisp/emacs-lisp/package.el b/lisp/emacs-lisp/package.el
index fe7b10f569af8b5ab0ccf7059aeb3837a7c345e3..ab1731aeb54703d12619d4770f2ad73d56f2049d 100644 (file)
--- a/lisp/emacs-lisp/package.el
+++ b/lisp/emacs-lisp/package.el
@@ -2941,7 +2941,7 @@ Helper function for `describe-package'."
         (insert " "))
       (insert "\n"))
     (when maintainers
-      (unless (proper-list-p maintainers)
+      (when (stringp (car maintainers))
         (setq maintainers (list maintainers)))
       (package--print-help-section
           (if (cdr maintainers) "Maintainers" "Maintainer"))