Bug: Feature request: more automatic updating of cookies [8.3.6 (8.3.6-4-g4835be-elpaplus @ /home/jorge/.emacs.d/elpa/org-plus-contrib-20160926/)]

[Jorge <jorge13515@gmail.com>]

Paste the following in an Org buffer:
--8<---------------cut here---------------start------------->8---
* Cookie_a [0/0]
* TODO Dummy_a
* Cookie_b [0/1]
** TODO Dummy_b
--8<---------------cut here---------------end--------------->8---

Within that buffer:
   1. Move point to the line of Dummy_a.
   2. <M-right>
I wished the cookie to be updated to [0/1] but it is not.

Then:
   1. Move point to the line of Dummy_b.
   2. C-c C-x C-w
   3. Move point to the line of Dummy_a at column 0.
   4. C-c C-x C-y
I wished both cookies to be updated.  They are not.

The manual [[info:org#Checkboxes][says]]:
    Checkbox statistic cookies are updated automatically if you toggle
    checkboxes with `C-c C-c' and make new ones with `M-S-<RET>'.  TODO
    statistics cookies update when changing TODO states.  If you delete
    boxes/entries or add/change them by hand, use this command to get things
    back into sync.

I request the feature of Org automatically updating cookies when using
structure editing commands such as C-c C-x C-w, C-c C-x C-y, <M-left>,
<M-right> and friends.  This could be governed by a user option.

The point is that C-u C-c # (to update cookies in the entire buffer) takes
long enough that I only call it a few times per week.  This means that cookies
can get out of sync.  Then I try to remember manually invoking C-c # on the
relevant line every time it goes out of sync, but I sometimes omit it.

Regards

Emacs  : GNU Emacs 25.1.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.18.9)
 of 2016-09-18
Package: Org-mode version 8.3.6 (8.3.6-4-g4835be-elpaplus @
/home/jorge/.emacs.d/elpa/org-plus-contrib-20160926/)

current state:
==============
(setq
 org-tab-first-hook '(org-hide-block-toggle-maybe
org-babel-hide-result-toggle-maybe org-babel-header-arg-expand)
 org-speed-command-hook '(org-speed-command-default-hook
org-babel-speed-command-hook)
 org-occur-hook '(org-first-headline-recenter)
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-confirm-shell-link-function 'yes-or-no-p
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-src-mode-hook '(org-src-babel-configure-edit-buffer
org-src-mode-configure-edit-buffer)
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-babel-pre-tangle-hook '(save-buffer)
 org-mode-hook '(#[nil "\300\301\302\303\304$\207" [org-add-hook
change-major-mode-hook org-show-block-all append local] 5]
#[nil "\300\301\302\303\304$\207" [org-add-hook change-major-mode-hook
org-babel-show-result-all append local]
  5]
org-babel-result-hide-spec org-babel-hide-all-hashes org-eldoc-load)
 org-archive-hook '(org-attach-archive-delete-maybe)
 org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point
org-babel-execute-safely-maybe)
 org-cycle-hook '(org-cycle-hide-archived-subtrees
org-cycle-hide-drawers org-cycle-show-empty-lines
 org-optimize-window-after-visibility-change)
 org-confirm-elisp-link-function 'yes-or-no-p
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 )

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