Variable: fill-region-as-paragraph-function
fill-region-as-paragraph-function is a variable defined in fill.el.gz.
Value
fill-region-as-paragraph-default
Documentation
Function to fill the region as if it were a single paragraph.
It should accept the arguments defined by fill-region-as-paragraph and
return the fill-prefix used for filling.
Probably introduced at or before Emacs version 31.1.
Source Code
;; Defined in /usr/src/emacs/lisp/textmodes/fill.el.gz
(defvar fill-region-as-paragraph-function #'fill-region-as-paragraph-default
"Function to fill the region as if it were a single paragraph.
It should accept the arguments defined by `fill-region-as-paragraph' and
return the `fill-prefix' used for filling.")