GitLab

(outline-mode): Use define-derived-mode.

(outline-mode): Define imenu-generic-expression.
(outline-headers-as-kill): New command.

(outline-up-heading-all): Use outline-previous-heading.
(outline-next-heading): Delete definition inserted yesterday.

(outline-up-heading-all): New function.
(outline-font-lock-level): Using outline-up-heading-all.
Tell outline-back-to-heading to accept invisible headings.

outline-view-change-hook to nil while making repeated calls to
outline-flag-region.  Run it once at the end.
(hide-other, hide-sublevels, show-children): Likewise.

Interpret PROP as a value for `invisible', not as property name.

Don't try to move back if already at beginning of buffer.

whole line, not just the part that matches the regexp.

(outline-on-heading-p):
(show-entry): If the heading is invisible, show it too.
(hide-other):

set the invisible property to `outline'.
(outline-minor-mode): Likewise.
Also, use `remove-from-invisibility-spec'.
(outline-flag-region): Set `outline' as the invisible property.

(outline-minor-mode): Likewise.

where an overlay extends on both sides of the region.
(outline-mark-subtree): New function.
(outline-mode-prefix-map): Put outline-mark-subtree on C-c @.

where an overlay extends on both sides of the region.

Use overlays-in, to ensure we get rid of empty overlays.

(outline-backward-same-level, outline-forward-same-level): Likewise.

(outline-flag-region): Run the hook.

backwards motion and handle beg/end of buffer properly.