Mention columns width variables in the buffer-menu doc string

* lisp/buff-menu.el (buffer-menu): Mention the variables that can
be used to change the columns widths (bug#36587).

diff --git a/lisp/buff-menu.el b/lisp/buff-menu.el
index 5f889866361d1cb98f4a3ab2d65667375f7afa61..6406a59c6aaf16c30d5c76c9dd8e86405201bd62 100644 (file)
--- a/lisp/buff-menu.el
+++ b/lisp/buff-menu.el
@@ -279,7 +279,11 @@ The remaining columns show the buffer name, the buffer size in
 characters, its major mode, and the visited file name (if any).
 
 See `Buffer-menu-mode' for the keybindings available the Buffer
-Menu."
+Menu.
+
+The width of the various columns can be customized by changing
+the `Buffer-menu-name-width', `Buffer-menu-size-width' and
+`Buffer-menu-mode-width' variables."
   (interactive "P")
   (switch-to-buffer (list-buffers-noselect arg))
   (message