bug#14955: 24.3.50; defcustom: :tag not shown when :options is present

[Jambunathan K]

1. C-M-x the defcustom below.

    (defcustom org-jabref-export-formats
      '(("odt"
         ("Chicago Manual of Style (author-date)"
          :in-text "chicago.ODF.text" :bibliography "chicago.ODF.reference")))
      "JabRef export formats for various backends."
      :group 'org-jabref
      :version "24.4"
      :type '(alist :key-type (string :tag "Export backend")
                    :options ("odt" "html")
                    :value-type
    ;; vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
                    (alist :key-type (string :tag "Citation style")
    ;; vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv    
               
                           :options ("Chicago Manual of Style (author-date)")
                           :value-type
                           (plist :tag "export formats"
                                  :value-type (string :tag "export format")
                                  :options (:in-text
                                            :bibliography)))))

2. M-x customize-variable RET org-jabref-export-formats RET

   Press INS to bring the customize buffer to the state below


    Hide Org Jabref Export Formats:
    [X] Key: odt
        Alist:
        [X] Key: Chicago Manual of Style (author-date) <======== :tag is missing
            export formats:
            [X] Key: :in-text
                export format: chicago.ODF.text
            [X] Key: :bibliography
                export format: chicago.ODF.reference
                    INS
            INS DEL Citation style:                   <========= :tag shown here
                    export formats:
                    [ ] Key: :in-text
                        export format: 
                    [ ] Key: :bibliography
                        export format: 
                                    INS
        INS


I think the :tag option should be displayed for values specified with
:options.  WDYT. 

Feel free to close this bug if this report sounds frivolous.

In GNU Emacs 24.3.50.24 (i686-pc-linux-gnu, GTK+ Version 2.20.1)
 of 2013-07-26 on debian-6.05
Bzr revision: 113547 rgm@gnu.org-20130726015506-xqc4ksyjl4qxvh8f
Windowing system distributor `The X.Org Foundation', version 11.0.10707000
Important settings:
  value of $LANG: en_IN
  locale-coding-system: iso-latin-1-unix
  default enable-multibyte-characters: t