Variable: completion-in-region-function
completion-in-region-function is a variable defined in
minibuffer.el.gz.
Value
completion--in-region
Documentation
Function to perform the job of completion-in-region.
The function is called with 4 arguments: START END COLLECTION PREDICATE.
The arguments and expected return value are as specified for
completion-in-region.
Probably introduced at or before Emacs version 24.4.
Source Code
;; Defined in /usr/src/emacs/lisp/minibuffer.el.gz
(defvar completion-in-region-function #'completion--in-region
"Function to perform the job of `completion-in-region'.
The function is called with 4 arguments: START END COLLECTION PREDICATE.
The arguments and expected return value are as specified for
`completion-in-region'.")