Variable: paragraph-separate
paragraph-separate is a customizable variable defined in
paragraphs.el.gz.
Value
"[ \f]*$"
Documentation
Regexp for beginning of a line that separates paragraphs.
If you change this, you may have to change paragraph-start also.
This is matched against the text at the left margin, which is not necessarily the beginning of the line, so it should not use "^" as an anchor. This ensures that the paragraph functions will work equally within a region of text indented by a margin setting.
Probably introduced at or before Emacs version 19.29.
Source Code
;; Defined in /usr/src/emacs/lisp/textmodes/paragraphs.el.gz
;; paragraph-start requires a hard newline, but paragraph-separate does not:
;; It is assumed that paragraph-separate is distinctive enough to be believed
;; whenever it occurs, while it is reasonable to set paragraph-start to
;; something very minimal, even including "." (which makes every hard newline
;; start a new paragraph).
(defcustom paragraph-separate "[ \t\f]*$"
"Regexp for beginning of a line that separates paragraphs.
If you change this, you may have to change `paragraph-start' also.
This is matched against the text at the left margin, which is not necessarily
the beginning of the line, so it should not use \"^\" as an anchor. This
ensures that the paragraph functions will work equally within a region of
text indented by a margin setting."
:type 'regexp
:safe #'stringp)