bug#45610: 27.1; Symbol’s function definition is void: seq-concatenate

[Leo Liu]

I have the following macro that is working until 27.1.

(defmacro cl-concatenatef (type place &rest sequences)
  `(cl-callf2 cl-concatenate ,type ,place ,@sequences))

cl-concatenate is inlinable (since forever) as declared in cl-macs:

 (cl-proclaim '(inline cl-acons cl-map cl-concatenate cl-notany
                cl-notevery cl-revappend cl-nreconc gethash))

In 27.1 after expansion only (apply #'seq-concatenate type sequences)
remains bypassing the cl-concatenate autoload which is supposed to load
the dependency seq.el.