Variable: x-select-enable-primary
x-select-enable-primary is an alias and customizable for
select-enable-primary, defined in select.el.gz.
This variable is obsolete since 25.1; use select-enable-primary
instead.
Value
nil
Documentation
Non-nil means cutting and pasting uses the primary selection.
The existence of a primary selection depends on the underlying GUI you use. E.g. it doesn't exist under MS-Windows.
Probably introduced at or before Emacs version 23.1.
Aliases
x-select-enable-primary (obsolete since 25.1)