work in progress

* ui
** remove garbage
*** startup screen
#+BEGIN_SRC emacs-lisp
(setq inhibit-startup-screen t)
#+END_SRC
*** useless mouse widgets
#+BEGIN_SRC emacs-lisp
(tool-bar-mode -1)
(menu-bar-mode -1)
(scroll-bar-mode -1)
#+END_SRC
*** line wrap
#+BEGIN_SRC emacs-lisp
(set-default 'truncate-lines t)
#+END_SRC
*** autosave/backup files
#+BEGIN_SRC emacs-lisp
  (setq make-backup-files nil)
  (setq auto-save-default nil)
#+END_SRC
*** popup windows
#+BEGIN_SRC emacs-lisp
(setq pop-up-windows nil) ; no popups (eg ediff)
#+END_SRC
** pretty stuff
*** enable line/column numbering
#+BEGIN_SRC emacs-lisp
;; (global-linum-mode t)
(line-number-mode 1)
(column-number-mode 1)
#+END_SRC
*** tab width
#+BEGIN_SRC emacs-lisp
(setq-default tab-width 4)
#+END_SRC
*** smooth scrolling
#+BEGIN_SRC emacs-lisp
(setq scroll-conservatively 100)
#+END_SRC
*** pretty symbols
#+BEGIN_SRC emacs-lisp
(when window-system (global-prettify-symbols-mode t))
#+END_SRC
*** highlight current line
#+BEGIN_SRC emacs-lisp
(when window-system (global-hl-line-mode t))
#+END_SRC
** yes-no prompt enhancement
#+BEGIN_SRC emacs-lisp
(defalias 'yes-or-no-p 'y-or-n-p) ; eliminate yes or no prompt on killing procs
#+END_SRC
** theme color selection
need this to:
a) apply the gui theme if gui is loaded as client and
b) ensure that the reloaded theme is only applied to the current frame

NOTE: this only works if we start term after gui, and term has light bg. not big deal for now since I hardly ever use term as client
#+BEGIN_SRC emacs-lisp
  (defvar my:theme 'spacemacs-dark)
  (defvar my:theme-window-loaded nil)
  (defvar my:theme-terminal-loaded nil)
  (if (daemonp)
      (add-hook 'after-make-frame-functions(lambda (frame)
                                             (select-frame frame)
                                             (if (window-system frame)
                                                 (unless my:theme-window-loaded
                                                   (if my:theme-terminal-loaded
                                                       (enable-theme my:theme)
                                                     (load-theme my:theme t))
                                                   (setq my:theme-window-loaded t))
                                               (unless my:theme-terminal-loaded
                                                 (if my:theme-window-loaded
                                                     (enable-theme my:theme)
                                                   (load-theme my:theme t))
                                                 (setq my:theme-terminal-loaded t)))))
    (progn
      (load-theme my:theme t)
      (if (display-graphic-p)
          (setq my:theme-window-loaded t)
        (setq my:theme-terminal-loaded t))))
#+END_SRC
* modeline
#+BEGIN_SRC emacs-lisp
  (use-package spaceline
    :ensure t
    :config
      (require 'spaceline-config)
      (setq powerline-default-separator (quote arrow))
      (spaceline-spacemacs-theme)
      (setq spaceline-buffer-size-p nil))
#+END_SRC
** dashboard
#+BEGIN_SRC emacs-lisp
  (use-package dashboard
    :ensure t
    :config
    (dashboard-setup-startup-hook)
    (setq dashboard-items '((recents . 10))))
#+END_SRC
* keybindings
** overrides
#+BEGIN_SRC emacs-lisp
  (global-set-key (kbd "C-h a") 'apropos)
#+END_SRC
** modeless bindings
These are commands that should work in any mode. Make the assumption that function keys are pretty much free in any major/minor mode
#+BEGIN_SRC emacs-lisp
  (global-set-key (kbd "<f1>") 'org-agenda)
  (global-set-key (kbd "<f2>") 'org-capture)
  (global-set-key (kbd "<f3>") 'org-iswitchb)
#+END_SRC
* printing
** 
* packages
** delight
#+BEGIN_SRC emacs-lisp
  (use-package delight
    :ensure t)
#+END_SRC
** beacon
#+BEGIN_SRC emacs-lisp
  (use-package beacon
    :ensure t
    :delight
    :init
    (beacon-mode 1))
#+END_SRC
** whichkey
#+BEGIN_SRC emacs-lisp
  (use-package which-key
    :ensure t
    :delight
    :init
    (which-key-mode))
#+END_SRC
** ido
#+BEGIN_SRC emacs-lisp
  (use-package ido
    :ensure t
    :bind
    ("C-x C-b" . 'ido-switch-buffer)
    ("C-x b" . 'ibuffer)
    :config
    (ido-mode 1)
    (setq ido-everywhere t)
    (setq ido-enable-flex-matching t)
    (setq ido-max-directory-size 100000)
    (setq ido-default-file-method 'selected-window)
    (setq ido-default-buffer-method 'selected-window)
    (use-package ido-vertical-mode
      :ensure t
      :init
      (ido-vertical-mode 1)
      (setq ido-vertical-define-keys 'C-n-and-C-p-only)))


    ;; (setq ido-file-extensions-order '(".org" ".txt" ".py" ".emacs" ".xml" ".el" ".ini" ".cfg" ".cnf"))
#+END_SRC
** smex
#+BEGIN_SRC emacs-lisp
  (use-package smex
    :ensure t
    :init
    (smex-initialize)
    :bind
    ("M-x" . 'smex)
    ("M-X" . 'smex-major-mode-commands))
#+END_SRC
** rainbow-delimiters
#+BEGIN_SRC emacs-lisp
  (use-package rainbow-delimiters
    :ensure t
    :delight
    :init
      (add-hook 'prog-mode-hook #'rainbow-delimiters-mode))
#+END_SRC
** ace-window
#+BEGIN_SRC emacs-lisp
  (use-package ace-window
    :ensure t
    :bind ("M-o" . ace-window)
    :config (setq aw-background nil))
#+END_SRC
** avy
#+BEGIN_SRC emacs-lisp
  (use-package avy
    :ensure t
    :bind ("M-s" . avy-goto-char)
    :config (setq avy-background t))
#+END_SRC
** sudo edit
#+BEGIN_SRC emacs-lisp
  (use-package sudo-edit
    :ensure t
    :bind ("C-c s" . sudo-edit))
#+END_SRC
** typit
#+BEGIN_SRC emacs-lisp
  (use-package typit
    :init
    :ensure t)
#+END_SRC
** calfw
#+BEGIN_SRC emacs-lisp
  (use-package calfw
    :init
    :ensure t)
#+END_SRC
** evil
*** packages
#+BEGIN_SRC emacs-lisp
  (use-package evil
    :ensure t
    :config
    (evil-mode 1)
    (use-package evil-org
      :ensure t
      :after org
      :delight
      :config
      (add-hook 'org-mode-hook 'evil-org-mode)
      (add-hook 'evil-org-mode-hook
                (lambda ()
                  (evil-org-set-key-theme)))
      (require 'evil-org-agenda)
      (evil-org-agenda-set-keys)))
#+END_SRC
*** keybindings
vim is all about escape, not...ctrl+g???
+BEGIN_SRC emacs-lisp
  (define-key evil-normal-state-map [escape] 'keyboard-quit)
  (define-key evil-visual-state-map [escape] 'keyboard-quit)

  ;; since ctrl+g and evil make no sense
  (defun nd/minibuffer-keyboard-quit ()
    "Abort recursive edit.
  In Delete Selection mode, if the mark is active, just deactivate it;
  then it takes a second \\[keyboard-quit] to abort the minibuffer."
    (interactive)
    (if (and delete-selection-mode transient-mark-mode mark-active)
        (setq deactivate-mark  t)
      (when (get-buffer "*Completions*") (delete-windows-on "*Completions*"))
      (abort-recursive-edit)))

  (define-key minibuffer-local-ns-map [escape] 'minibuffer-keyboard-quit)
  (define-key minibuffer-local-completion-map [escape] 'minibuffer-keyboard-quit)
  (define-key minibuffer-local-must-match-map [escape] 'minibuffer-keyboard-quit)
  (define-key minibuffer-local-isearch-map [escape] 'minibuffer-keyboard-quit)
#+END_SRC
** undo tree
#+BEGIN_SRC emacs-lisp
  (use-package undo-tree
    :ensure t
    :delight
    :config
    (global-undo-tree-mode)
    (setq undo-tree-visualizer-diff t))
#+END_SRC
* custom functions
** follow window splitting
#+BEGIN_SRC emacs-lisp
(defun split-and-follow-horizontally ()
    (interactive)
    (split-window-below)
    (balance-windows)
    (other-window 1))
(global-set-key (kbd "C-x 2") 'split-and-follow-horizontally)

(defun split-and-follow-vertically ()
    (interactive)
    (split-window-right)
    (balance-windows)
    (other-window 1))
(global-set-key (kbd "C-x 3") 'split-and-follow-vertically)
#+END_SRC
** config edit and reload
*** edit
#+BEGIN_SRC emacs-lisp
(defun config-visit ()
(interactive)
(find-file "~/.emacs.d/conf.org"))
(global-set-key (kbd "C-c e") 'config-visit)
#+END_SRC
*** reload
#+BEGIN_SRC emacs-lisp
(defun config-reload ()
"Reloads ~/.emacs.d/conf.org at runtime"
(interactive)
(org-babel-load-file (expand-file-name "~/.emacs.d/conf.org")))
(global-set-key (kbd "C-c r") 'config-reload)
#+END_SRC
** custom keybindings
*** delete whole line
#+BEGIN_SRC emacs-lisp
(global-set-key (kbd "C-S-w") 'fc/delete-whole-line)
(defun fc/delete-whole-line ()
"Delete the whole line without flooding the kill ring"
(interactive)
(delete-region (progn (forward-line 0) (point))
                (progn (forward-line 1) (point))))
#+END_SRC
*** delete word forward
#+BEGIN_SRC emacs-lisp
(global-set-key (kbd "M-d") 'fc/delete-word-forward)
(defun fc/delete-word-forward (arg)
"Delete word forward without flooding the kill ring"
(interactive "p")
(delete-region (point) (progn (forward-word arg) (point))))
#+END_SRC
*** delete word backward
#+BEGIN_SRC emacs-lisp
(global-set-key (kbd "<M-backspace>") 'fc/delete-word-backward)
(defun fc/delete-word-backward (arg)
"Delete word backward without flooding the kill ring"
(interactive "p")
(delete-region (point) (progn (backward-word arg) (point))))
#+END_SRC
*** duplicate line
#+BEGIN_SRC emacs-lisp
(global-set-key (kbd "C-c C-d") 'fc/duplicate-current-line-or-region)
(defun fc/duplicate-current-line-or-region (arg)
    "Duplicates the current line or region ARG times."
    (interactive "p")
    (let (beg end (origin (point)))
    (if (and mark-active (> (point) (mark)))
        (exchange-point-and-mark))
    (setq beg (line-beginning-position))
    (if mark-active
        (exchange-point-and-mark))
    (setq end (line-end-position))
    (let ((region (buffer-substring-no-properties beg end)))
        (dotimes (i arg)
        (goto-char end)
        (newline)
        (insert region)
        (setq end (point))))))
#+END_SRC
    (goto-char (+ origin (* (length region) arg) arg)))))
* ess
#+begin_src emacs-lisp
(setq inferior-R-args "--quiet --no-save")
(load "ess-site")
(setq ess-history-file "session.Rhistory")
(setq ess-history-directory
	  (substitute-in-file-name "${XDG_CONFIG_HOME}/r/"))
#+END_SRC
* languages
** python
#+BEGIN_SRC 
(elpy-enable)

;; make python tabs 4 chars
(add-hook 'python-mode-hook
      (lambda ()
        (setq indent-tabs-mode t)
        (setq tab-width 4)
        (setq python-indent 4)))

#+END_SRC
* org-mode
** basic
#+BEGIN_SRC emacs-lisp
  (setq org-log-done t)
  (setq org-src-window-setup 'current-window)
  (setq org-startup-indented t)
  (delight 'org-indent-mode)
  (setq org-directory "~/Org")
#+END_SRC
** evil modes
#+BEGIN_SRC emacs-lisp
  ;;(add-hook 'org-capture-mode-hook 'evil-append)
#+END_SRC
** source snippets
*** emacs-lisp
#+BEGIN_SRC emacs-lisp
  (add-to-list 'org-structure-template-alist
               '("el" "#+BEGIN_SRC emacs-lisp\n?\n#+END_SRC"))
#+END_SRC
** keyboard shortcuts
*** navigation
#+BEGIN_SRC emacs-lisp
  (setq org-special-ctrl-a/e t)
  (setq org-special-ctrl-k t)
  (setq org-yank-adjusted-subtrees t)
#+END_SRC
** todo states
*** sequences
#+BEGIN_SRC emacs-lisp
  (setq org-todo-keywords
        '((sequence "TODO(t)" "NEXT(n)" "|" "DONE(d)")
          (sequence "WAITING(w@/!)" "HOLD(h@/!)" "|" "CANCELLED(c@/!)")))
#+END_SRC
*** colors
#+BEGIN_SRC emacs-lisp
(setq org-todo-keyword-faces
      (quote (("TODO" :foreground "light coral" :weight bold)
              ("NEXT" :foreground "khaki" :weight bold)
              ("DONE" :foreground "light green" :weight bold)
              ("WAITING" :foreground "orange" :weight bold)
              ("HOLD" :foreground "violet" :weight bold)
              ("CANCELLED" :foreground "deep sky blue" :weight bold))))
#+END_SRC
** tags
I use tags for contexts (mostly). The "@" represents location contexts and a mutually exclusive as there is only one of me. The "#" contexts represent tools which must be available.
#+BEGIN_SRC emacs-lisp
  (setq  org-tag-alist '((:startgroup)
                         ("@errand" . ?e)
                         ("@work" . ?w)
                         ("@home" . ?h)
                         ("@travel" . ?f)
                         (:endgroup)
                         ("#laptop" . ?L)
                         ("#hood" . ?H)
                         ("NOTE" . ?N)
                         ("FLAGGED" . ??)))

  ;; TODO I'm sure there is a better way to do this in lisp
  (setq org-tag-faces
        '(("@errand" . (:foreground "PaleGreen"))
          ("@work" . (:foreground "PaleGreen"))
          ("@home" . (:foreground "PaleGreen"))
          ("@travel" . (:foreground "PaleGreen"))
          ("#laptop" . (:foreground "SkyBlue"))
          ("#hood" . (:foreground "SkyBlue"))))
#+END_SRC
** properties
#+BEGIN_SRC emacs-lisp
  ;; this is basically the same as putting the properties at the top of all org files
  (add-to-list 'org-default-properties "Project_Type")
  (setq org-global-properties '(("Project_Type_ALL" . "series")))
  ;; TODO this may not be needed
  (setq org-use-property-inheritance '("Project_Type"))
#+END_SRC
** capture templates
#+BEGIN_SRC emacs-lisp
  (setq org-capture-templates
        '(("t" "todo" entry (file "~/Org/capture.org") "* TODO %?\ndeliverable: \n%U\n")
          ("n" "note" entry (file "~/Org/capture.org") "* %? :NOTE:\n%U\n" )
          ("a" "appointment" entry (file "~/Org/capture.org") "* TODO %?\n%U\n%^t\n" )
          ("m" "multi-day" entry (file "~/Org/capture.org") "* TODO %?\n%U\n%^t--%^t\n" )
          ("d" "deadline" entry (file "~/Org/capture.org") "* TODO %?\nDEADLINE: %^t\ndeliverable:\n%U\n" )
          
          ("j" "journal" entry (file+datetree "~/Org/diary.org") "* %?\n%U\n")
          ("p" "org-protocol" entry (file+headline ,(concat org-directory "~/Org/capture.org") "Inbox")
           "* %^{Title}\nSource: %u, %c\n #+BEGIN_QUOTE\n%i\n#+END_QUOTE\n\n\n%?")
          ("L" "org-protocol" entry (file+headline ,(concat org-directory "~/Org/capture.org") "Inbox")
           "* %? [[%:link][%:description]] \nCaptured On: %U")            
          ("h" "habit" entry (file "~/Org/capture.org")
           "* NEXT %?\n%U\n%a\nSCHEDULED: %(format-time-string \"%<<%Y-%m-%d %a .+1d/3d>>\")\n:PROPERTIES:\n:STYLE: habit\n:REPEAT_TO_STATE: NEXT\n:END:\n")))
#+END_SRC
** refile
*** targets
#+BEGIN_SRC emacs-lisp
  (setq org-refile-targets (quote ((nil :maxlevel . 9)
                                   ("~/Org/reference/idea.org" :maxlevel . 9)
                                   (org-agenda-files :maxlevel . 9))))
#+END_SRC
*** completion
#+BEGIN_SRC emacs-lisp
  (setq org-refile-use-outline-path t)
  (setq org-outline-path-complete-in-steps nil)
  (setq org-completion-use-ido t)
#+END_SRC
*** node creation
#+BEGIN_SRC emacs-lisp
  (setq org-refile-allow-creating-parent-nodes 'confirm)
#+END_SRC
*** use current window
#+BEGIN_SRC emacs-lisp
  (setq org-indirect-buffer-display 'current-window)
#+END_SRC
*** exclude done states
#+BEGIN_SRC emacs-lisp
  (defun nd/verify-refile-target ()
    "Exclude todo keywords with a done state from refile targets"
    (not (member (nth 2 (org-heading-components)) org-done-keywords)))
  (setq org-refile-target-verify-function 'nd/verify-refile-target)
#+END_SRC
** agenda
*** basic config
#+BEGIN_SRC emacs-lisp
  (setq org-agenda-files (quote ("~/Org"
                                 "~/Org/large_projects"
                                 "~/Org/reference")))
  (setq org-agenda-dim-blocked-tasks nil)
  (setq org-agenda-compact-blocks t)
#+END_SRC
*** task helper functions
These are the building blocks for skip functions.
#+BEGIN_SRC emacs-lisp
  (defun nd/is-todoitem-p ()
    "return todo keyword if present in headline (which defines the heading as a todoitem)
  this is used to both test if a heading is a todoitem and retrieving the keyword"
    (let ((keyword (nth 2 (org-heading-components))))
      (if (member keyword org-todo-keywords-1)
          keyword)))

  (defun nd/is-project-p ()
    "return todo keyword if heading is todoitem and has children"
    (and (nd/heading-has-children) (nd/is-todoitem-p)))

  (defun nd/is-task-p ()
    "return todo keyword if heading is todoitem with no children"
    (and (not (nd/heading-has-children)) (nd/is-todoitem-p)))

  (defun nd/is-atomic-task-p ()
    "return todo keyword if heading is task with no parents"
    (and (not (nd/heading-has-parent)) (nd/is-task-p)))
    
  (defun nd/is-project-task-p ()
    "return todo keyword if heading is task with no parents"
    (and (nd/heading-has-parent) (nd/is-task-p)))

  (defun nd/is-scheduled-heading-p ()
    "return timestamp if headline is scheduled"
    (org-entry-get nil "SCHEDULED"))

  (defun nd/is-series-header-p ()
    "return t if headline has property Project_Type=series"
    (equal "series" (org-entry-get nil "Project_Type")))

  (defun nd/is-closed-heading-p ()
    "return timestamp if headline is closed"
    (let ((timestamp (org-entry-get nil "CLOSED")))
      (if timestamp (float-time (date-to-time timestamp)))))

  (defvar nd/archive-delay-days 30
    "the number of days to wait before tasks show up in the archive view")

  (defun nd/is-archivable-heading-p ()
    "return timestamp if todoitem is closed and older than specified time"
    (let ((timestamp (nd/is-closed-heading-p)))
      ;; NOTE we do not ensure that the todo state is in done keywords
      ;; this is to allow easier error correction in slip functions
      (if (and timestamp (> (- (float-time) timestamp) (* 60 60 24 nd/archive-delay-days)))
          timestamp)))

  (defun nd/is-archivable-atomic-task-p ()
    "return keyword if heading is an archivable task"
    (and (nd/is-archivable-heading-p) (nd/is-atomic-task-p)))
    
  (defun nd/is-archivable-project-p ()
    "return keyword if heading is an archivable task"
    (and (nd/is-archivable-heading-p) (nd/is-project-p)))

  (defun nd/is-active-task-p ()
    "return keyword if task is either NEXT or scheduled"
    (let ((keyword (nd/is-task-p)))
      (if (or (equal keyword "NEXT") (nd/is-scheduled-heading-p))
          keyword)))

  (defun nd/is-blocked-task-p ()
    "return keyword if task is WAITING"
    (equal (nd/is-task-p) "WAITING"))

  (defun nd/heading-has-children ()
    "returns t if heading has todoitems in its immediate subtree"
    ;; TODO make this more efficient (and accurate) by only testing
    ;; the level immediately below (if it exists)
    (let ((has-children)
          (subtree-end (save-excursion (org-end-of-subtree t))))
      (save-excursion
        (outline-next-heading)
        (while (and (not has-children)
                    (< (point) subtree-end))
          (when (nd/is-todoitem-p)
            (setq has-children t))
  ;;        (org-forward-heading-same-level 1 t)))
          (outline-next-heading)))
      has-children))

  (defun nd/heading-has-parent ()
    "returns parent keyword if heading is in the immediate subtree of a todoitem"
    (save-excursion (and (org-up-heading-safe) (nd/is-todoitem-p))))

  (defun nd/is-discontinuous-project-task-p ()
    "detects todoitems that are children of non-todoitems
  that in turn are children of todoitems (discontinous project)"
    (let ((has-todoitem-parent)
          (has-non-todoitem-parent))
      (save-excursion
        (while (and (org-up-heading-safe)
                    (not has-todoitem-parent))
          (if (nd/is-todoitem-p)
              (setq has-todoitem-parent t)
            (setq has-non-todoitem-parent t))))
      (and has-todoitem-parent has-non-todoitem-parent)))

  (defconst nd/project-invalid-todostates
    '("WAITING" "NEXT")
    "projects cannot have these todostates") 

  ;; project level testing
  (defun nd/descend-into-project ()
    "returns statuscode according to state of project:
  0: archivable
  5: complete
  10: stuck
  20: held
  30: waiting
  40: active
  50: invalid

  This function works on an assumed order of precendence:
  - we start by assuming all projects as complete (eg only DONE and CANCELLED)
  - if project has any TODO (regardless of DONE or CANCELLED) it is stuck
  - if project has any HOLD (regardless of DONE, CANCELLED, or TODO) it is held
  - in the same manner WAITING means waiting project
  - in the same manner, NEXT or scheduled means active.
  - can also detect errors which override all
  - anything higher than active breaks the recursion/tree walk

  Using this scheme, we simply compare the magnitude of the statuscodes"
    (let ((project-state 0)
          (previous-point))
      (save-excursion
        (setq previous-point (point))
        (outline-next-heading)
        (while (and (< project-state 40)
                    (> (point) previous-point))
          (let ((keyword (nd/is-todoitem-p)))
            (if keyword
                (let ((cur-state
                       (if (nd/heading-has-children)
                           ;; invalid todo states or scheduled project headers auto invalidate
                           (cond ((member keyword nd/project-invalid-todostates) 50)
                                 ((nd/is-scheduled-heading-p) 50)
                                 ;; cancelled and hold work independent of everything underneath
                                 ((equal keyword "CANCELLED") (if (nd/is-archivable-heading-p) 0 5))
                                 ((equal keyword "HOLD") 20)
                                 ;; all other tests require a descent into the child project
                                 (t (let ((child-statuscode (nd/descend-into-project)))
                                      ;; projects marked TODO should not be complete
                                      (cond ((equal keyword "TODO") (if (> child-statuscode 5)
                                                                        child-statuscode 50))
                                            ;; assume that all projects here are DONE
                                            ;; first test if all children are archivable
                                            (t (case child-statuscode
                                                 (5 5)
                                                 ;; if this heading is archivable
                                                 ;; then the entire project is archivable
                                                 ;; else merely completed
                                                 (0 (if (nd/is-archivable-heading-p) 0 5))
                                                 ;; if children are completed but not archivable
                                                 ;; then the project is completed, otherwise
                                                 ;; the project is marked DONE with incomplete
                                                 ;; subtasks and therefore invalid
                                                 (t (if (= child-statuscode 5) 5 50))))))))
                         (cond ((equal keyword "HOLD") 20)
                               ((equal keyword "WAITING") 30)
                               ((equal keyword "NEXT") 40)
                               ((and (equal keyword "TODO") (nd/is-scheduled-heading-p)) 40)
                               ((equal keyword "TODO") 10)
                               ((nd/is-archivable-heading-p) 0)
                               ;; catchall means CANCELLED or DONE (complete)
                               (t 5)))))
                  (if (> cur-state project-state)
                      (setq project-state cur-state)))))
          (setq previous-point (point))
          (org-forward-heading-same-level 1 t)))
      project-state))

  (defun nd/is-project-status-p (statuscode)
    (let ((keyword (nd/is-project-p)))
      (if keyword
          ;; these first cases are determined entirely by the toplevel heading
          ;; if invalid keyword, t if we ask about 50
          (cond ((member keyword nd/project-invalid-todostates) (if (= statuscode 50) keyword))
                ;; if hold, t if we ask about 20
                ((equal keyword "HOLD") (if (= statuscode 20) keyword))
                ;; if cancelled, figure out if archivable
                ;; t if archivable and we ask 0 and t if not archivable and we ask 5
                ((equal keyword "CANCELLED") (if (nd/is-archivable-heading-p)
                                                 (if (= statuscode 0) keyword)
                                               (if (= statuscode 5) keyword)))
                ;; all other cases need the statuscode from the subtasks below the heading
                (t (let ((child-statuscode (nd/descend-into-project)))
                     ;; if done, t if project is done and we ask about 0
                     ;; or t if project is not done (>0) and we ask about 50
                     (if (equal keyword "DONE")
                         (if (nd/is-archivable-heading-p)
                             (if (= statuscode child-statuscode 0) keyword)
                           (if (= statuscode child-statuscode 5)
                               keyword
                             (if (and (> child-statuscode 5) (= statuscode 50)) keyword)))

                       ;; if TODO then the subtasks must not be done (completed or archivable)
                       (if (equal keyword "TODO")
                           (if (> child-statuscode 5)
                               (if (= statuscode child-statuscode) keyword)
                             (if (= statuscode 50) keyword))
                         ;; all other queries are independent of heading
                         ;; t if children match the statuscode we ask
                         (if (= statuscode child-statuscode) keyword)))))))))
#+END_SRC
*** skip functions
These are the primary means we use to sort through tasks. Note that we could do this with
tags in the custom commands section but I find this easier to maintain and possibly faster.
#+BEGIN_SRC emacs-lisp
  ;; TODO we could clean this up with macros
  (defun nd/skip-non-atomic-tasks ()
    (save-restriction
      (widen)
      (if (not (nd/is-atomic-task-p))
          (save-excursion (or (outline-next-heading) (point-max))))))

  (defun nd/skip-non-next-project-tasks ()
    (save-restriction
      (widen)
      ;; TODO skip over invalid and held
      (if (not (equal (nd/is-project-task-p) "NEXT"))
          (save-excursion (or (outline-next-heading) (point-max))))))
    
  (defun nd/skip-non-waiting-project-tasks ()
    (save-restriction
      (widen)
      ;; TODO skip over invalid and held
      (if (not (equal (nd/is-project-task-p) "WAITING"))
          (save-excursion (or (outline-next-heading) (point-max))))))

  (defun nd/skip-non-held-project-tasks ()
    (save-restriction
      (widen)
      ;; TODO skip over invalid and held
      (if (not (equal (nd/is-project-task-p) "HOLD"))
          (save-excursion (or (outline-next-heading) (point-max))))))
    
  ;; slip functions
  (defun nd/skip-non-discontinuous-project-tasks ()
    (save-restriction
      (widen)
      (if (not (nd/is-discontinuous-project-task-p))
          (save-excursion (or (outline-next-heading) (point-max))))))

  (defun nd/skip-non-done-open-todoitems ()
    (save-restriction
      (widen)
      (if (not (and (member (nd/is-todoitem-p) org-done-keywords) (not (nd/is-closed-heading-p))))
          (save-excursion (or (outline-next-heading) (point-max))))))
    
  (defun nd/skip-non-undone-closed-todoitems ()
    (save-restriction
      (widen)
      (if (not (and (not (member (nd/is-todoitem-p)) org-done-keywords) (nd/is-closed-heading-p)))
          (save-excursion (or (outline-next-heading) (point-max))))))

  ;; projects
  ;; TODO skip entire subtree if we don't need to evaluate anything inside
  ;; otherwise (for example) a held project will still have it's subtasks show up
  (defun nd/skip-projects-without-statuscode (statuscode)
    (save-restriction
      (widen)
      (if (not (nd/is-project-status-p statuscode))
          (save-excursion (or (outline-next-heading) (point-max))))))

  ;; top-level projects
  (defun nd/skip-subprojects-without-statuscode (statuscode)
    (save-restriction
      (widen)
      (if (or (nd/heading-has-parent) (not (nd/is-project-status-p statuscode)))
          (save-excursion (or (outline-next-heading) (point-max))))))

  (defun nd/skip-series-projects-without-statuscode (statuscode)
    (save-restriction
      (widen)
      (if (not (and (nd/is-series-heading-p) (nd/is-project-status-p statuscode)))
          (save-excursion (or (outline-next-heading) (point-max))))))
  ;; series projects
  ;; defined as project with property Project_type=series
  ;; must have:
  ;; - one level of subtasks
  ;; - all subtasks either TODO/scheduled, NEXT, DONE, CANCELLED
  ;; - at least one TODO/scheduled or NEXT (active) ..else empty
  ;; invalid if:
  ;; - project header is invalid project header (typical rules apply)

  ;; archiving
  (defun nd/skip-non-archivable-atomic-tasks ()
    (save-restriction
      (widen)
      (if (not (nd/is-archivable-atomic-task-p))
          (save-excursion (or (outline-next-heading) (point-max))))))
#+END_SRC
*** interactive view functions
#+BEGIN_SRC emacs-lisp
  (defvar nd/agenda-limit-project-toplevel t
    "used to filter projects by all levels or top-level only")

  (defun nd/toggle-project-toplevel-display ()
    (interactive)
    (setq nd/agenda-limit-project-toplevel (not nd/agenda-limit-project-toplevel))
    (when  (equal major-mode 'org-agenda-mode)
      (org-agenda-redo))
    (message "Showing %s project view in agenda" (if nd/agenda-limit-project-toplevel "toplevel" "complete")))

  (defun nd/agenda-base-task-command (keyword skip-fun)
    "shorter syntax to define task agenda commands"
    `(tags-todo
      "-NA-REFILE/!"
      ((org-agenda-overriding-header (concat ,keyword " Tasks"))
       (org-agenda-skip-function ,skip-fun)
       (org-agenda-todo-ignore-with-date 'all)
       (org-agenda-sorting-strategy '(category-keep)))))

  (defun nd/agenda-base-project-command (match keyword statuscode)
    "shorter syntax to define project agenda commands"
    `(tags
      ,match
      ((org-agenda-overriding-header (concat
                                      (and nd/agenda-limit-project-toplevel "Toplevel ")
                                      ,keyword
                                      " Projects"))
       (org-agenda-skip-function (if nd/agenda-limit-project-toplevel
                                     '(nd/skip-subprojects-without-statuscode ,statuscode)
                                   '(nd/skip-projects-without-statuscode ,statuscode)))
       (org-agenda-sorting-strategy '(category-keep)))))
    
#+END_SRC
*** custom commands
#+BEGIN_SRC emacs-lisp
  (setq org-agenda-tags-todo-honor-ignore-options t)
  (setq org-agenda-custom-commands
        `(("t"
           "Task View"
           ((agenda "" nil)
            ,(nd/agenda-base-task-command "Next Project" ''nd/skip-non-next-project-tasks)
            ,(nd/agenda-base-task-command "Waiting Project" ''nd/skip-non-waiting-project-tasks)
            ,(nd/agenda-base-task-command "Atomic" ''nd/skip-non-atomic-tasks)
            ,(nd/agenda-base-task-command "Held Project" ''nd/skip-non-held-project-tasks)))
          ("o"
           "Project Overview"
           (,(nd/agenda-base-project-command "-NA-REFILE-ATOMIC-Project_Type=\"series\"/!" "Stuck" 10)
            ,(nd/agenda-base-project-command "-NA-REFILE-ATOMIC-Project_Type=\"series\"/!" "Waiting" 30)
            ,(nd/agenda-base-project-command "-NA-REFILE-ATOMIC-Project_Type=\"series\"/!" "Active" 40)
            ,(nd/agenda-base-project-command "-NA-REFILE-ATOMIC-Project_Type=\"series\"/!" "Held" 20)))
          ("r"
           "Refile and errors"
           ((tags "REFILE"
                  ((org-agenda-overriding-header "Tasks to Refile"))
                  (org-tags-match-list-sublevels nil))
            ,(nd/agenda-base-task-command "Discontinous Project" ''nd/skip-non-discontinuous-project-tasks)
            ,(nd/agenda-base-project-command "-NA-REFILE-ATOMIC-Project_Type=\"series\"/!" "Unmarked Completed" 5)
            ,(nd/agenda-base-project-command "-NA-REFILE-ATOMIC-Project_Type=\"series\"/" "Invalid" 50)
            ;; ,(nd/agenda-base-task-command "Done But Not Closed" ''nd/skip-non-done-open-todoitems)
            ;; ,(nd/agenda-base-task-command "Closed But Not Done" ''nd/skip-non-open-closed-todoitems)
            ))
          ("s"
           "Series projects"
           (,(nd/agenda-base-project-command "-NA-REFILE-ATOMIC+Project_Type=\"series\"/!" "Active Series" 40)
            ,(nd/agenda-base-project-command "-NA-REFILE-ATOMIC+Project_Type=\"series\"/!" "Empty Series" 5)))
          ("A"
           "Archivable Tasks and Projects"
           ((tags "-NA-REFILE/"
                  ((org-agenda-overriding-header "Atomic Tasks to Archive")
                   (org-agenda-skip-function 'nd/skip-non-archivable-atomic-tasks)
                   (org-tags-match-list-sublevels nil)))
            ,(nd/agenda-base-project-command "-NA-REFILE-ATOMIC+Project_Type=\"series\"/!" "Archivable Series" 0)
            ,(nd/agenda-base-project-command "-NA-REFILE-ATOMIC/" "Archivable" 0)))))

#+END_SRC
*** keymap
#+BEGIN_SRC emacs-lisp
  (evil-define-key 'motion org-agenda-mode-map "T" 'nd/toggle-project-toplevel-display)
#+END_SRC
*** views
**** calendar display
#+BEGIN_SRC emacs-lisp
  (setq org-agenda-span 'day)
  (setq org-agenda-time-grid (quote ((daily today remove-match)
                                     #("----------------" 0 16 (org-heading t))
                                     (0900 1100 1300 1500 1700))))
#+End_src
**** right align tags
the agenda does not do this by default...it's annoying
#+BEGIN_SRC emacs-lisp
  (add-hook 'org-finalize-agenda-hook 'place-agenda-tags)
  (defun place-agenda-tags ()
    "Put the agenda tags by the right border of the agenda window."
    (setq org-agenda-tags-column (- 4 (window-width)))
    (org-agenda-align-tags))
#+END_SRC 
*** auto exclusion
#+BEGIN_SRC emacs-lisp
  (defun nd/org-auto-exclude-function (tag)
    "Automatic task exclusion in the agenda with / RET"
    (and (cond
          ((string= tag "hold")
           t))
         (concat "-" tag)))

  (setq org-agenda-auto-exclude-function 'nd/org-auto-exclude-function)
#+END_SRC
** ui
*** bullets
#+BEGIN_SRC emacs-lisp
(use-package org-bullets
  :ensure t
  :config
    (add-hook 'org-mode-hook (lambda () (org-bullets-mode))))
#+END_SRC
** caldav
+BEGIN_SRC emacs-lisp
  (use-package org-caldav
    :ensure t
    :config (org-caldav-url "https://portnoy4prez.yavin4.ch/nextcloud/remote.php/dav/calendars/petrucci4prez/concerts/"
                            org-cladav-calendar-id "testorg"
                            org-caldav-inbox "~/Org/reference/testcal.org"))
#+END_SRC
** calfw
#+BEGIN_SRC emacs-lisp
  (use-package calfw-org
    :init
    :ensure t
    :config (setq cfw:fchar-junction ?╋
                  cfw:fchar-vertical-line ?┃
                  cfw:fchar-horizontal-line ?━
                  cfw:fchar-left-junction ?┣
                  cfw:fchar-right-junction ?┫
                  cfw:fchar-top-junction ?┯
                  cfw:fchar-top-left-corner ?┏
                  cfw:fchar-top-right-corner ?┓))
#+END_SRC
* shell
#+begin_src emacs-lisp
(defvar nd-term-shell "/bin/bash")
(defadvice ansi-term (before force-bash)
  (interactive (list nd-term-shell)))
(ad-activate 'ansi-term)
#+END_SRC
* ediff
#+BEGIN_SRC emacs-lisp
(setq ediff-window-setup-function 'ediff-setup-windows-plain)
#+END_SRC