Variable: prefix-command-preserve-state-hook
prefix-command-preserve-state-hook is a variable defined in
simple.el.gz.
Value
(universal-argument--preserve)
Documentation
Normal hook run when a command needs to preserve the prefix.
Probably introduced at or before Emacs version 25.1.
Source Code
;; Defined in /usr/src/emacs/lisp/simple.el.gz
(defvar prefix-command-preserve-state-hook nil
"Normal hook run when a command needs to preserve the prefix.")