* lisp/gnus/gnus-cus.el (gnus-extra-group-parameters): Allow nil

for modseq.

diff --git a/lisp/gnus/gnus-cus.el b/lisp/gnus/gnus-cus.el
index 615b2b94101cebe41b14e8a4b1cfa3ea33df55b8..fb8b300e3509b63d2a9525f77e6ef47837f7cc58 100644 (file)
--- a/lisp/gnus/gnus-cus.el
+++ b/lisp/gnus/gnus-cus.el
@@ -254,7 +254,10 @@ DOC is a documentation string for the parameter.")
 (defconst gnus-extra-group-parameters
   '((uidvalidity (string :tag "IMAP uidvalidity") "\
 Server-assigned value attached to IMAP groups, used to maintain consistency.")
-    (modseq (string :tag "modseq") "modseq")
+    (modseq (choice :tag "modseq"
+                   (const :tag "None" nil)
+                   (string :tag "Sequence number"))
+           "Modification seqence number")
     (active (cons :tag "active" (integer :tag "min") (integer :tag "max"))
            "active")
     (permanent-flags (repeat :tag "Permanent Flags" (symbol :tag "Flag"))