From: Noam Postavsky <npostavs@gmail.com>
Date: Wed, 1 Nov 2017 12:51:35 +0000 (-0400)
Subject: Fix customization of debugger-print-function (Bug#29077)
X-Git-Tag: emacs-26.0.91~420
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=70621e25713b8158cc386a70247f63106df3712c;p=emacs.git

Fix customization of debugger-print-function (Bug#29077)

* lisp/emacs-lisp/debug.el (debugger-print-function): The :options
keyword has no effect for :type 'function, use :type '(choice ...)
instead.
---

diff --git a/lisp/emacs-lisp/debug.el b/lisp/emacs-lisp/debug.el
index 6c754615b00..e1b87b5c6e2 100644
--- a/lisp/emacs-lisp/debug.el
+++ b/lisp/emacs-lisp/debug.el
@@ -51,8 +51,9 @@ the middle is discarded, and just the beginning and end are displayed."
 
 (defcustom debugger-print-function #'cl-prin1
   "Function used to print values in the debugger backtraces."
-  :type 'function
-  :options '(cl-prin1 prin1)
+  :type '(choice (const cl-prin1)
+                 (const prin1)
+                 function)
   :version "26.1")
 
 (defcustom debugger-bury-or-kill 'bury