Your bug report

#14738: 24.3.50; defcustom :type (repeat (cons symbol plist)) when nil is the default value.

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 14738@debbugs.gnu.org.

-- 
14738: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=14738
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