Variable: completion-on-separator-character
completion-on-separator-character is a customizable variable defined
in completion.el.gz.
Value
nil
Documentation
Non-nil means separator characters mark previous word as used.
This means the word will be saved as a completion.
Source Code
;; Defined in /usr/src/emacs/lisp/completion.el.gz
(defcustom completion-on-separator-character nil
"Non-nil means separator characters mark previous word as used.
This means the word will be saved as a completion."
:type 'boolean)