* lisp/textmodes/emacs-news-mode.el (emacs-news-mode-map): Move
non-editing commands from here...
(emacs-news-common-map): ... to here.
(emacs-news-view-mode): Remove hard-coded 'special-mode' bindings.
(emacs-news-view-mode-map): Inherit from 'special-mode-map' and
'emacs-news-common-map' here instead.
(emacs-news-mode--menu-common-1): New defconst for menu items common to
'news-mode' and 'news-view-mode'.
(emacs-news-mode--menu-common-2): Second new defconst for common items.
(emacs-news-mode-menu): Use them.
(emacs-news-view-mode-menu): New menu, which omits the buffer editing
commands.
This builds on the fix for Bug#72080.
* lisp/textmodes/emacs-news-mode.el (emacs-news-cycle-tag): Search for
a heading starting with 2 or more '*' rather than exactly 3.
* test/lisp/textmodes/emacs-news-mode-resources/cycle-tag.erts
(Point-Char): Add tests for 2 and 4 '*' levels.
* lisp/textmodes/emacs-news-mode.el (emacs-news-cycle-tag): Renamed
from 'emacs-news-toggle-tag'.
(emacs-news-mode-map, emacs-news-mode-menu): Use new name.
* test/lisp/textmodes/emacs-news-mode-resources/cycle-tag.erts:
Renamed from "toggle-tag.erts".
* test/lisp/textmodes/emacs-news-mode-tests.el (emacs-news-cycle-tag):
Rename test from 'emacs-news-toggle-tag', and call
'emacs-news-cycle-tag' with new resource file name.
* lisp/textmodes/emacs-news-mode.el (emacs-news-mode-map): Add binding
for 'emacs-news-delete-temporary-markers'.
(emacs-news-mode-menu): Add menu for common actions.
* doc/emacs/text.texi (Outline Mode): Remove outline-minor-mode-use-margins.
Document the values insert/in-margins of outline-minor-mode-use-buttons.
* lisp/help.el (describe-bindings):
Set outline-minor-mode-use-buttons to 'insert'.
* lisp/textmodes/emacs-news-mode.el (emacs-news--mode-common):
Set outline-minor-mode-use-buttons to 'in-margins'.
* lisp/outline.el (outline-minor-mode-use-buttons): Change :type
from 'buffer-predicate' to choice of const values nil/in-margins/t.
(outline--use-buttons, outline-minor-mode-insert-buttons)
(outline-minor-mode-use-margins, outline--use-margins): Remove variables.
(outline-minor-mode-highlight-buffer): Change overlay name
'outline-overlay' to 'outline-highlight'.
(outline-minor-mode): Simplify to handle possible values of
'outline-minor-mode-use-buttons' instead of using many variables.
(outline--make-button-overlay): Use value 'insert' of
'outline-minor-mode-use-buttons'.
(outline--insert-open-button, outline--insert-close-button)
(outline--fix-up-all-buttons, outline--fix-buttons-after-change):
Handle values of outline-minor-mode-use-buttons instead of using
many variables.
(outline--make-button-overlay, outline--insert-open-button)
(outline--insert-close-button): Insert button when
outline-minor-mode-insert-buttons is non-nil, otherwise
put an overlay with before-string. (bug#57813)
* lisp/help.el (describe-bindings): Set buffer-local
outline-minor-mode-insert-buttons to t.
* lisp/textmodes/emacs-news-mode.el (emacs-news--mode-common):
Set buffer-local outline-minor-mode-use-margins to t. Don't set
outline-regexp for leading spaces because now spaces are not added
in the NEWS buffer.
* lisp/outline.el (outline-imenu-generic-expression): New variable
broken out from...
(outline-mode): ...here.
* lisp/textmodes/emacs-news-mode.el (emacs-news--mode-common): Use
above new variable to add imenu support.
* lisp/textmodes/emacs-news-mode.el (emacs-news-mode-map)
(emacs-news-view-mode-map): Make C-x C-q switch to the
appropriate mode for editing, and vice versa.
(emacs-news-mode): Disable button-mode and make buffer
read-write.
* lisp/textmodes/emacs-news-mode.el (emacs-news-toggle-tag): New
command.
(emacs-news-mode-map): Bind above new command to "C-c C-t".
* test/lisp/textmodes/emacs-news-mode-resources/toggle-tag.erts:
* test/lisp/textmodes/emacs-news-mode-tests.el: New files.
* lisp/textmodes/emacs-news-mode.el (emacs-news-common-map): New
defvar-keymap. Bind navigation commands as in 'org-mode' and
'outline-minor-mode'.
(emacs-news-mode-map): Inherit from 'emacs-news-common-map'.
(emacs-news-view-mode-map): New defvar-keymap; inherit from
'emacs-news-common-map'.
* lisp/help.el (view-emacs-news): Use emacs-news-view-mode.
* lisp/textmodes/emacs-news-mode.el (emacs-news-view-mode): Split
into own mode to avoid confusion.
* etc/NEWS (mode): Use emacs-news-mode.
* lisp/help.el (view-emacs-news): Use emacs-news-mode.
* lisp/textmodes/emacs-news-mode.el: New mode for editing and
viewing the Emacs NEWS file.
