Require select. Set selection-coding-system to
mac-system-coding-system. Call menu-bar-enable-clipboard.
(x-last-selected-text-clipboard, x-last-selected-text-primary)
(x-select-enable-clipboard): New variables.
(x-select-text, x-get-selection, x-selection-value)
(x-get-selection-value, mac-select-convert-to-string)
(mac-services-open-file, mac-services-open-selection)
(mac-services-insert-text): New functions.
(CLIPBOARD, FIND): Put mac-scrap-name property.
(com.apple.traditional-mac-plain-text, public.utf16-plain-text)
(public.tiff): Put mac-ostype property.
(selection-converter-alist): Add entries for them.
(mac-application-menu-map): New keymap.
(interprogram-cut-function, interprogram-paste-function): Set to
x-select-text and x-get-selection-value, respectively.
(split-window-keep-point): Set to t.