Variable: colon-double-space
colon-double-space is a customizable variable defined in fill.el.gz.
Value
nil
Documentation
Non-nil means put two spaces after a colon when filling.
Probably introduced at or before Emacs version 19.30.
Source Code
;; Defined in /usr/src/emacs/lisp/textmodes/fill.el.gz
(defcustom colon-double-space nil
"Non-nil means put two spaces after a colon when filling."
:type 'boolean
:safe #'booleanp)