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[Orgmode] in-buffer settings for priorities

From: Dmitri Minaev
Subject: [Orgmode] in-buffer settings for priorities
Date: Wed, 16 May 2007 14:43:56 +0500


I'd like to know the opinion of the community (and Carsten's in
particular, of course) on the following idea -- do you think it would
be useful to have in-buffer settings to customize priorities?

The background story (sorry if it's verbose) is like this. I keep my
reading list in org-mode (quite naturally). Normally, the entries are
stored in the chronological order, but sometimes I would like to see
the best or the worst read books. I started by using tags like
:score2:, :score8:, etc., so I could search for tags using regexps
like {score[7-9]}. Unfortunately, the entries were not sorted.
Basically, the only way to sort them is to use priorities instead of
tags. Three grades were not enough, of course, so I set
org-lowest-priority to J. On the contrary, 10 grades were too much for
other files, like todo lists. So, I decided to add per-file settings
for priorities: parameter #+PRIORITY_LOW.

This worked, but using letters to rate books was not the best idea and
I decided to add digits from 0 to 9 to the list of priorities. Now I
think that it might have been better to add a kind of a
#+PRIORITY_STYLE with values 'abc' and 'num', for example, but at that
moment I added another variable -- org-highest-priority and a
corresponding in-buffer setting #+PRIORITY_HIGH. I also had to replace
the regexps for priorities with [A-Z0-9],  I changed the
org-default-priority value from \B to org-lowest-priority, added
#+PRIORITY_DEF setting and adapted the prompts to use
org-highest-priority instead of \A.

Now, I could add this to the reading list:

Now, only a small change in the .emacs was needed to add a new agenda
custom command that changes the sorting strategy to priority-up, et
voila! I only have to type C-c a 1 b to see the list of books sorted
by my rating.

What still confuses me is the necessity to press S-down to _increase_
the rating. Or, perhaps, I should just get used to the fact the best
books should have rating 1 instead of 9.

The patch against version 4.74 is below. Don't judge me too harshly :)

--- ../org.el   2007-05-16 12:17:15.000000000 +0500
+++ org.el      2007-05-16 13:20:17.000000000 +0500
@@ -1527,9 +1527,8 @@
  :tag "Org Priorities"
  :group 'org-todo)

-(defcustom org-default-priority ?B
-  "The default priority of TODO items.
-This is the priority an item get if no explicit priority is given."
+(defcustom org-highest-priority ?A
+  "The highest priority of TODO items.  A character like ?A, ?B etc."
  :group 'org-priorities
  :type 'character)

@@ -1538,6 +1537,12 @@
  :group 'org-priorities
  :type 'character)

+(defcustom org-default-priority org-lowest-priority
+  "The default priority of TODO items.
+This is the priority an item get if no explicit priority is given."
+  :group 'org-priorities
+  :type 'character)
(defgroup org-time nil
  "Options concerning time stamps and deadlines in Org-mode."
  :tag "Org Time"
@@ -3346,9 +3351,9 @@
    (org-set-local 'org-todo-sets nil)
    (let ((re (org-make-options-regexp
               '("CATEGORY" "SEQ_TODO" "PRI_TODO" "TYP_TODO"
-                "STARTUP" "ARCHIVE" "TAGS" "LINK")))
          (splitre "[ \t]+")
-         kwds key value cat arch tags links hw dws tail sep kws1)
+         kwds key value cat arch tags links hw dws tail sep kws1 prio-high
prio-low prio-def)
@@ -3371,6 +3376,12 @@
                (push (cons (match-string 1 value)
                            (org-trim (match-string 2 value)))
+            ((equal key "PRIORITY_HIGH")
+             (setq prio-high value))
+            ((equal key "PRIORITY_LOW")
+             (setq prio-low value))
+            ((equal key "PRIORITY_DEFAULT")
+             (setq prio-def value))
             ((equal key "STARTUP")
              (let ((opts (org-split-string value splitre))
                    l var val)
@@ -3390,6 +3401,9 @@
                                      '(face t fontified t) arch)))
      (and cat (org-set-local 'org-category cat))
+      (and prio-high (org-set-local 'org-highest-priority (aref prio-high 0)))
+      (and prio-low (org-set-local 'org-lowest-priority (aref prio-low 0)))
+      (and prio-def (org-set-local 'org-default-priority (aref prio-def 0)))
      (and arch (org-set-local 'org-archive-location arch))
      (and links (setq org-link-abbrev-alist-local (nreverse links)))
      ;; Process the TODO keywords
@@ -4150,7 +4164,7 @@
           (list (concat "^\\*+[ \t]*" org-not-done-regexp)
                 '(1 'org-todo t))
           ;; Priorities
-          (list (concat "\\[#[A-Z]\\]") '(0 'org-special-keyword t))
+          (list (concat "\\[#[A-Z0-9]\\]") '(0 'org-special-keyword t))
           ;; Special keywords
           (list org-repeat-re  '(0 'org-special-keyword t))
           (list (concat "\\<" org-deadline-string) '(0 'org-special-keyword t))
@@ -11983,7 +11997,7 @@

;;;; Priorities

-(defvar org-priority-regexp ".*?\\(\\[#\\([A-Z]\\)\\] ?\\)"
+(defvar org-priority-regexp ".*?\\(\\[#\\([A-Z0-9]\\)\\] ?\\)"
  "Regular expression matching the priority indicator.")

(defvar org-remove-priority-next-time nil)
@@ -12012,18 +12026,18 @@
        (setq current org-default-priority))
       ((eq action 'set)
-       (message "Priority A-%c, SPC to remove: " org-lowest-priority)
+       (message "Priority %c-%c, SPC to remove: " org-highest-priority
        (setq new (read-char-exclusive))
        (cond ((equal new ?\ ) (setq remove t))
-             ((or (< (upcase new) ?A) (> (upcase new) org-lowest-priority))
+             ((or (< (upcase new) org-highest-priority) (> (upcase new)
               (error "Priority must be between `%c' and `%c'"
-                     ?A org-lowest-priority))))
+                     org-highest-priority org-lowest-priority))))
       ((eq action 'up)
        (setq new (1- current)))
       ((eq action 'down)
        (setq new (1+ current)))
       (t (error "Invalid action")))
-      (setq new (min (max ?A (upcase new)) org-lowest-priority))
+      (setq new (min (max org-highest-priority (upcase new))
      (setq news (format "%c" new))
      (if have
          (if remove
@@ -14219,7 +14233,7 @@
        (setq tmp (calendar-date-string tmp)))
      (setq props (plist-put props 'date tmp)))
    (when (setq tmp (plist-get props 'txt))
-      (when (string-match "\\[#\\([A-Z]\\)\\] ?" tmp)
+      (when (string-match "\\[#\\([A-Z0-9]\\)\\] ?" tmp)
        (plist-put props 'priority-letter (match-string 1 tmp))
        (setq tmp (replace-match "" t t tmp)))
      (when (and (setq re (plist-get props 'org-todo-regexp))
@@ -19499,7 +19513,7 @@
                                 (substring hd (match-end 1))))
              (setq pri org-default-priority))
            (setq pri (floor (1+ (* 8. (/ (float (- org-lowest-priority pri))
-                                         (- org-lowest-priority ?A))))))
+                                         (- org-lowest-priority 

            (princ (format "BEGIN:VTODO
@@ -20509,7 +20523,7 @@
        (push (org-point-in-group p 4 :tags) clist))
      (goto-char p)
      (skip-chars-backward "^[\n\r \t") (or (eobp) (backward-char 1))
-      (if (looking-at "\\[#[A-Z]\\]")
+      (if (looking-at "\\[#[A-Z0-9]\\]")
          (push (org-point-in-group p 0 :priority) clist)))


With best regards,
Dmitri Minaev

Russian history blog: http://minaev.blogspot.com

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