(eshell-skip-prompt-function): Fix :type.

diff --git a/lisp/eshell/esh-mode.el b/lisp/eshell/esh-mode.el
index 5da511626c5c282964f2990200c39e73c8e85cdf..d0393df4153eaeb143d38bad693b5d6b12605f98 100644 (file)
--- a/lisp/eshell/esh-mode.el
+++ b/lisp/eshell/esh-mode.el
@@ -188,7 +188,7 @@ This is used by `eshell-watch-for-password-prompt'."
 
 (defcustom eshell-skip-prompt-function nil
   "*A function called from beginning of line to skip the prompt."
-  :type 'function
+  :type '(choice (const nil) function)
   :group 'eshell-mode)
 
 (defcustom eshell-status-in-modeline t