Unreadable deferred-warning causes error on load

If you enable deferred warnings, and load the current version of command-line-arguments (fbac862) on SBCL, when ASDF attempts to load the deferred warnings for parse.lisp, you get an error about a comma outside a quasiquote.

The file containing the deferred warning looks like this:

((SB-C::*UNDEFINED-WARNINGS*
  (:FUNCTION COMMAND-LINE-ARGUMENTS:SHOW-OPTION-HELP 1
   (:%ENCLOSING-SOURCE NIL :%SOURCE NIL :ORIGINAL-FORM
    (COMMAND-LINE-ARGUMENTS:SHOW-OPTION-HELP COMMAND-LINE-ARGUMENTS::OPTS
     :SORT-NAMES T :STREAM COMMAND-LINE-ARGUMENTS::STR :DOCSTRING T)
    :CONTEXT
    ((DEFMACRO COMMAND-LINE-ARGUMENTS:DEFINE-COMMAND)
     (DEFUN ,COMMAND-LINE-ARGUMENTS::NAME))
    :FILE-NAME #P"/root/common-lisp/command-line-arguments/parse.lisp"
    :FILE-POSITION 15697 :ORIGINAL-SOURCE-PATH (3 3 5 1 2 2 2 4 24)))))

As you can see there is indeed an invalid comma present.