Teemu Likonen [2015-10-15 12:40:21+03] wrote:

> Perhaps this is does what you want:
>
>     (add-hook 'gnus-summary-mode 'my-gnus-summary-mode-hook)
>
>     (defun my-gnus-summary-mode-hook ()
>       (set-display-table-slot buffer-display-table 'selective-display [?…]))

And to turn it on/off everywhere (e.g. outline, org) refer to the
"standard-display-table" variable:

(set-display-table-slot standard-display-table 'selective-display [?…])

(set-display-table-slot standard-display-table 'selective-display nil)