bug#31139: [PATCH] Document Narrow indicator in describe-mode

[Michael Hendricks]

* lisp/help.el (describe-mode): document narrowing, if active
---
 lisp/help.el | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lisp/help.el b/lisp/help.el
index 8e6604d2db..92a2f52d2d 100644
--- a/lisp/help.el
+++ b/lisp/help.el
@@ -908,6 +908,8 @@ documentation for the major and minor modes of that buffer."
                   (push (list fmode pretty-minor-mode
                               (format-mode-line (assq mode minor-mode-alist)))
                         minor-modes)))))
+       (when (or (> (point-min) 1) (<= (point-max) (buffer-size)))
+         (push '(narrow-to-region "Narrow" " Narrow") minor-modes))
        (setq minor-modes
              (sort minor-modes
                    (lambda (a b) (string-lessp (cadr a) (cadr b)))))
-- 
2.14.2