Function: cl-incf
cl-incf is a function alias for incf, defined in gv.el.gz.
Signature
(cl-incf ARG1 &optional ARG2)
Documentation
Increment PLACE by X (1 by default).
PLACE may be a symbol, or any generalized variable allowed by setf.
The return value is the incremented value of PLACE.
If X is specified, it should be an expression that should evaluate to a number.
This macro is considered deprecated in favor of the built-in macro
incf that was added in Emacs 31.1.
Probably introduced at or before Emacs version 31.1.