* lisp/progmodes/project.el (project-vc-name): Fix the :type form (bug#48747).

diff --git a/lisp/progmodes/project.el b/lisp/progmodes/project.el
index 5b8648031fbb06b18c3d1929753ad38353c762fe..690b9bb5cd6b125e913c9c84ec2b7ff52ff3c76b 100644 (file)
--- a/lisp/progmodes/project.el
+++ b/lisp/progmodes/project.el
@@ -407,7 +407,8 @@ you might have to restart Emacs to see the effect."
 
 The best way to change the value a VC project reports as its
 name, is by setting this in .dir-locals.el."
-  :type 'string
+  :type '(choice (const :tag "Default to the base name" nil)
+                 (string :tag "Custom name"))
   :version "29.1"
   :safe #'stringp)