Variable: kill-do-not-save-duplicates
kill-do-not-save-duplicates is a customizable variable defined in
simple.el.gz.
Value
nil
Documentation
If non-nil, don't add a string to kill-ring if it duplicates the last one.
The comparison is done using equal-including-properties.
This variable was added, or its default value changed, in Emacs 23.2.
Probably introduced at or before Emacs version 23.2.
Source Code
;; Defined in /usr/src/emacs/lisp/simple.el.gz
(defcustom kill-do-not-save-duplicates nil
"If non-nil, don't add a string to `kill-ring' if it duplicates the last one.
The comparison is done using `equal-including-properties'."
:type 'boolean
:group 'killing
:version "23.2")