Initial commit of Luke Shumaker's "dot-files".

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+;;; org-id.el --- Global identifiers for Org-mode entries
+;;
+;; Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
+;;
+;; Author: Carsten Dominik <carsten at orgmode dot org>
+;; Keywords: outlines, hypermedia, calendar, wp
+;; Homepage: http://orgmode.org
+;; Version: 7.4
+;;
+;; This file is part of GNU Emacs.
+;;
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;
+;;; Commentary:
+
+;; This file implements globally unique identifiers for Org-mode entries.
+;; Identifiers are stored in the entry as an :ID: property.  Functions
+;; are provided that create and retrieve such identifiers, and that find
+;; entries based on the identifier.
+
+;; Identifiers consist of a prefix (default "Org" given by the variable
+;; `org-id-prefix') and a unique part that can be created by a number
+;; of different methods, see the variable `org-id-method'.
+;; Org has a builtin method that uses a compact encoding of the creation
+;; time of the ID, with microsecond accuracy.  This virtually
+;; guarantees globally unique identifiers, even if several people are
+;; creating IDs at the same time in files that will eventually be used
+;; together.
+;;
+;; By default Org uses UUIDs as global unique identifiers.
+;;
+;; This file defines the following API:
+;;
+;; org-id-get-create
+;;        Create an ID for the entry at point if it does not yet have one.
+;;        Returns the ID (old or new).  This function can be used
+;;        interactively, with prefix argument the creation of a new ID is
+;;        forced, even if there was an old one.
+;;
+;; org-id-get
+;;        Get the ID property of an entry.  Using appropriate arguments
+;;        to the function, it can also create the ID for this entry.
+;;
+;; org-id-goto
+;;        Command to go to a specific ID, this command can be used
+;;        interactively.
+;;
+;; org-id-get-with-outline-path-completion
+;;        Retrieve the ID of an entry, using outline path completion.
+;;        This function can work for multiple files.
+;;
+;; org-id-get-with-outline-drilling
+;;        Retrieve the ID of an entry, using outline path completion.
+;;        This function only works for the current file.
+;;
+;; org-id-find
+;;        Find the location of an entry with specific id.
+;;
+
+;;; Code:
+
+(require 'org)
+
+(declare-function message-make-fqdn "message" ())
+
+;;; Customization
+
+(defgroup org-id nil
+  "Options concerning global entry identifiers in Org-mode."
+  :tag "Org ID"
+  :group 'org)
+
+(defcustom org-id-uuid-program "uuidgen"
+  "The uuidgen program."
+  :group 'org-id
+  :type 'string)
+
+(defcustom org-id-method 'uuid
+  "The method that should be used to create new IDs.
+
+An ID will consist of the optional prefix specified in `org-id-prefix',
+and a unique part created by the method this variable specifies.
+
+Allowed values are:
+
+org        Org's own internal method, using an encoding of the current time to
+           microsecond accuracy, and optionally the current domain of the
+           computer.  See the variable `org-id-include-domain'.
+
+uuid       Create random (version 4) UUIDs.  If the program defined in
+           `org-id-uuid-program' is available it is used to create the ID.
+           Otherwise an internal functions is used."
+  :group 'org-id
+  :type '(choice
+	  (const :tag "Org's internal method" org)
+	  (const :tag "external: uuidgen" uuid)))
+
+(defcustom org-id-prefix nil
+  "The prefix for IDs.
+
+This may be a string, or it can be nil to indicate that no prefix is required.
+When a string, the string should have no space characters as IDs are expected
+to have no space characters in them."
+  :group 'org-id
+  :type '(choice
+	  (const :tag "No prefix")
+	  (string :tag "Prefix")))
+
+(defcustom org-id-include-domain nil
+  "Non-nil means add the domain name to new IDs.
+This ensures global uniqueness of IDs, and is also suggested by
+RFC 2445 in combination with RFC 822.  This is only relevant if
+`org-id-method' is `org'.  When uuidgen is used, the domain will never
+be added.
+The default is to not use this because we have no really good way to get
+the true domain, and Org entries will normally not be shared with enough
+people to make this necessary."
+  :group 'org-id
+  :type 'boolean)
+
+(defcustom org-id-track-globally t
+  "Non-nil means track IDs through files, so that links work globally.
+This work by maintaining a hash table for IDs and writing this table
+to disk when exiting Emacs.  Because of this, it works best if you use
+a single Emacs process, not many.
+
+When nil, IDs are not tracked.  Links to IDs will still work within
+a buffer, but not if the entry is located in another file.
+IDs can still be used if the entry with the id is in the same file as
+the link."
+  :group 'org-id
+  :type 'boolean)
+
+(defcustom org-id-locations-file (convert-standard-filename
+				  "~/.emacs.d/.org-id-locations")
+  "The file for remembering in which file an ID was defined.
+This variable is only relevant when `org-id-track-globally' is set."
+  :group 'org-id
+  :type 'file)
+
+(defvar org-id-locations nil
+  "List of files with IDs in those files.
+Depending on `org-id-use-hash' this can also be a hash table mapping IDs
+to files.")
+
+(defvar org-id-files nil
+  "List of files that contain IDs.")
+
+(defcustom org-id-extra-files 'org-agenda-text-search-extra-files
+  "Files to be searched for IDs, besides the agenda files.
+When Org reparses files to remake the list of files and IDs it is tracking,
+it will normally scan the agenda files, the archives related to agenda files,
+any files that are listed as ID containing in the current register, and
+any Org-mode files currently visited by Emacs.
+You can list additional files here.
+This variable is only relevant when `org-id-track-globally' is set."
+  :group 'org-id
+  :type
+  '(choice
+    (symbol :tag "Variable")
+    (repeat :tag "List of files"
+	    (file))))
+
+(defcustom org-id-search-archives t
+  "Non-nil means search also the archive files of agenda files for entries.
+This is a possibility to reduce overhead, but it means that entries moved
+to the archives can no longer be found by ID.
+This variable is only relevant when `org-id-track-globally' is set."
+  :group 'org-id
+  :type 'boolean)
+
+;;; The API functions
+
+;;;###autoload
+(defun org-id-get-create (&optional force)
+  "Create an ID for the current entry and return it.
+If the entry already has an ID, just return it.
+With optional argument FORCE, force the creation of a new ID."
+  (interactive "P")
+  (when force
+    (org-entry-put (point) "ID" nil))
+  (org-id-get (point) 'create))
+
+;;;###autoload
+(defun org-id-copy ()
+  "Copy the ID of the entry at point to the kill ring.
+Create an ID if necessary."
+  (interactive)
+  (org-kill-new (org-id-get nil 'create)))
+
+;;;###autoload
+(defun org-id-get (&optional pom create prefix)
+  "Get the ID property of the entry at point-or-marker POM.
+If POM is nil, refer to the entry at point.
+If the entry does not have an ID, the function returns nil.
+However, when CREATE is non nil, create an ID if none is present already.
+PREFIX will be passed through to `org-id-new'.
+In any case, the ID of the entry is returned."
+  (org-with-point-at pom
+    (let ((id (org-entry-get nil "ID")))
+      (cond
+       ((and id (stringp id) (string-match "\\S-" id))
+	id)
+       (create
+	(setq id (org-id-new prefix))
+	(org-entry-put pom "ID" id)
+	(org-id-add-location id (buffer-file-name (buffer-base-buffer)))
+	id)
+       (t nil)))))
+
+;;;###autoload
+(defun org-id-get-with-outline-path-completion (&optional targets)
+  "Use outline-path-completion to retrieve the ID of an entry.
+TARGETS may be a setting for `org-refile-targets' to define the eligible
+headlines.  When omitted, all headlines in all agenda files are
+eligible.
+It returns the ID of the entry.  If necessary, the ID is created."
+  (let* ((org-refile-targets (or targets '((nil . (:maxlevel . 10)))))
+	 (org-refile-use-outline-path
+	  (if (caar org-refile-targets) 'file t))
+	 (org-refile-target-verify-function nil)
+	 (spos (org-refile-get-location "Entry: "))
+	 (pom (and spos (move-marker (make-marker) (nth 3 spos)
+				     (get-file-buffer (nth 1 spos))))))
+    (prog1 (org-id-get pom 'create)
+      (move-marker pom nil))))
+
+;;;###autoload
+(defun org-id-get-with-outline-drilling (&optional targets)
+  "Use an outline-cycling interface to retrieve the ID of an entry.
+This only finds entries in the current buffer, using `org-get-location'.
+It returns the ID of the entry.  If necessary, the ID is created."
+  (let* ((spos (org-get-location (current-buffer) org-goto-help))
+	 (pom (and spos (move-marker (make-marker) (car spos)))))
+    (prog1 (org-id-get pom 'create)
+      (move-marker pom nil))))
+
+;;;###autoload
+(defun org-id-goto (id)
+  "Switch to the buffer containing the entry with id ID.
+Move the cursor to that entry in that buffer."
+  (interactive "sID: ")
+  (let ((m (org-id-find id 'marker)))
+    (unless m
+      (error "Cannot find entry with ID \"%s\"" id))
+    (switch-to-buffer (marker-buffer m))
+    (goto-char m)
+    (move-marker m nil)
+    (org-show-context)))
+
+;;;###autoload
+(defun org-id-find (id &optional markerp)
+  "Return the location of the entry with the id ID.
+The return value is a cons cell (file-name . position), or nil
+if there is no entry with that ID.
+With optional argument MARKERP, return the position as a new marker."
+  (cond
+   ((symbolp id) (setq id (symbol-name id)))
+   ((numberp id) (setq id (number-to-string id))))
+  (let ((file (org-id-find-id-file id))
+	org-agenda-new-buffers where)
+    (when file
+      (setq where (org-id-find-id-in-file id file markerp)))
+    (unless where
+      (org-id-update-id-locations)
+      (setq file (org-id-find-id-file id))
+      (when file
+	(setq where (org-id-find-id-in-file id file markerp))))
+    where))
+
+;;; Internal functions
+
+;; Creating new IDs
+
+(defun org-id-new (&optional prefix)
+  "Create a new globally unique ID.
+
+An ID consists of two parts separated by a colon:
+- a prefix
+- a unique part that will be created according to `org-id-method'.
+
+PREFIX can specify the prefix, the default is given by the variable
+`org-id-prefix'.  However, if PREFIX is the symbol `none', don't use any
+prefix even if `org-id-prefix' specifies one.
+
+So a typical ID could look like \"Org:4nd91V40HI\"."
+  (let* ((prefix (if (eq prefix 'none)
+		     ""
+		   (concat (or prefix org-id-prefix) ":")))
+	 unique)
+    (if (equal prefix ":") (setq prefix ""))
+    (cond
+     ((memq org-id-method '(uuidgen uuid))
+      (setq unique (org-trim (shell-command-to-string org-id-uuid-program)))
+      (unless (org-uuidgen-p unique)
+	(setq unique (org-id-uuid))))
+     ((eq org-id-method 'org)
+      (let* ((etime (org-id-reverse-string (org-id-time-to-b36)))
+	     (postfix (if org-id-include-domain
+			  (progn
+			    (require 'message)
+			    (concat "@" (message-make-fqdn))))))
+	(setq unique (concat etime postfix))))
+     (t (error "Invalid `org-id-method'")))
+    (concat prefix unique)))
+
+(defun org-id-uuid ()
+  "Return string with random (version 4) UUID."
+  (let ((rnd (md5 (format "%s%s%s%s%s%s%s"
+			  (random t)
+			  (current-time)
+			  (user-uid)
+			  (emacs-pid)
+			  (user-full-name)
+			  user-mail-address
+			  (recent-keys)))))
+    (format "%s-%s-4%s-%s%s-%s"
+	    (substring rnd 0 8)
+	    (substring rnd 8 12)
+	    (substring rnd 13 16)
+	    (format "%x"
+		    (logior
+		     #b10000000
+		     (logand
+		      #b10111111
+		      (string-to-number
+		       (substring rnd 16 18) 16))))
+	    (substring rnd 18 20)
+	    (substring rnd 20 32))))
+
+(defun org-id-reverse-string (s)
+  (mapconcat 'char-to-string (nreverse (string-to-list s)) ""))
+
+(defun org-id-int-to-b36-one-digit (i)
+  "Turn an integer between 0 and 61 into a single character 0..9, A..Z, a..z."
+  (cond
+   ((< i 10) (+ ?0 i))
+   ((< i 36) (+ ?a i -10))
+   (t (error "Larger that 35"))))
+
+(defun org-id-b36-to-int-one-digit (i)
+  "Turn a character 0..9, A..Z, a..z into a number 0..61.
+The input I may be a character, or a single-letter string."
+  (and (stringp i) (setq i (string-to-char i)))
+  (cond
+   ((and (>= i ?0) (<= i ?9)) (- i ?0))
+   ((and (>= i ?a) (<= i ?z)) (+ (- i ?a) 10))
+   (t (error "Invalid b36 letter"))))
+
+(defun org-id-int-to-b36 (i &optional length)
+  "Convert an integer to a base-36 number represented as a string."
+  (let ((s ""))
+    (while (> i 0)
+      (setq s (concat (char-to-string
+		       (org-id-int-to-b36-one-digit (mod i 36))) s)
+	    i (/ i 36)))
+    (setq length (max 1 (or length 1)))
+    (if (< (length s) length)
+	(setq s (concat (make-string (- length (length s)) ?0) s)))
+    s))
+
+(defun org-id-b36-to-int (s)
+  "Convert a base-36 string into the corresponding integer."
+  (let ((r 0))
+    (mapc (lambda (i) (setq r (+ (* r 36) (org-id-b36-to-int-one-digit i))))
+	  s)
+    r))
+
+(defun org-id-time-to-b36 (&optional time)
+  "Encode TIME as a 10-digit string.
+This string holds the time to micro-second accuracy, and can be decoded
+using `org-id-decode'."
+  (setq time (or time (current-time)))
+  (concat (org-id-int-to-b36 (nth 0 time) 4)
+	  (org-id-int-to-b36 (nth 1 time) 4)
+	  (org-id-int-to-b36 (or (nth 2 time) 0) 4)))
+
+(defun org-id-decode (id)
+  "Split ID into the prefix and the time value that was used to create it.
+The return value is (prefix . time) where PREFIX is nil or a string,
+and time is the usual three-integer representation of time."
+  (let (prefix time parts)
+    (setq parts (org-split-string id ":"))
+    (if (= 2 (length parts))
+	(setq prefix (car parts) time (nth 1 parts))
+      (setq prefix nil time (nth 0 parts)))
+    (setq time (org-id-reverse-string time))
+    (setq time (list (org-id-b36-to-int (substring time 0 4))
+		     (org-id-b36-to-int (substring time 4 8))
+		     (org-id-b36-to-int (substring time 8 12))))
+    (cons prefix time)))
+
+;; Storing ID locations (files)
+
+(defun org-id-update-id-locations (&optional files)
+  "Scan relevant files for IDs.
+Store the relation between files and corresponding IDs.
+This will scan all agenda files, all associated archives, and all
+files currently mentioned in `org-id-locations'.
+When FILES is given, scan these files instead.
+When CHECK is given, prepare detailed information about duplicate IDs."
+  (interactive)
+  (if (not org-id-track-globally)
+      (error "Please turn on `org-id-track-globally' if you want to track IDs")
+    (let* ((org-id-search-archives
+	    (or org-id-search-archives
+		(and (symbolp org-id-extra-files)
+		     (symbol-value org-id-extra-files)
+		     (member 'agenda-archives org-id-extra-files))))
+	   (files
+	    (or files
+		(append
+		 ;; Agenda files and all associated archives
+		 (org-agenda-files t org-id-search-archives)
+		 ;; Explicit extra files
+		 (if (symbolp org-id-extra-files)
+		     (symbol-value org-id-extra-files)
+		   org-id-extra-files)
+	      ;; Files associated with live org-mode buffers
+		 (delq nil
+		       (mapcar (lambda (b)
+				 (with-current-buffer b
+				   (and (org-mode-p) (buffer-file-name))))
+			       (buffer-list)))
+		 ;; All files known to have IDs
+		 org-id-files)))
+	   org-agenda-new-buffers
+	   file nfiles tfile ids reg found id seen (ndup 0))
+      (when (member 'agenda-archives files)
+	(setq files (delq 'agenda-archives (copy-sequence files))))
+      (setq nfiles (length files))
+      (while (setq file (pop files))
+	(message "Finding ID locations (%d/%d files): %s"
+		 (- nfiles (length files)) nfiles file)
+	(setq tfile (file-truename file))
+	(when (and (file-exists-p file) (not (member tfile seen)))
+	  (push tfile seen)
+	  (setq ids nil)
+	  (with-current-buffer (org-get-agenda-file-buffer file)
+	    (save-excursion
+	      (save-restriction
+		(widen)
+		(goto-char (point-min))
+		(while (re-search-forward "^[ \t]*:ID:[ \t]+\\(\\S-+\\)[ \t]*$"
+					  nil t)
+		  (setq id (org-match-string-no-properties 1))
+		  (if (member id found)
+		      (progn
+			(message "Duplicate ID \"%s\", also in file %s"
+				 id (or (car (delq
+					      nil
+					      (mapcar
+					       (lambda (x)
+						 (if (member id (cdr x))
+						     (car x)))
+					       reg)))
+					(buffer-file-name)))
+			(when (= ndup 0)
+			  (ding)
+			  (sit-for 2))
+			(setq ndup (1+ ndup)))
+		    (push id found)
+		    (push id ids)))
+		(push (cons (abbreviate-file-name file) ids) reg))))))
+      (org-release-buffers org-agenda-new-buffers)
+      (setq org-agenda-new-buffers nil)
+      (setq org-id-locations reg)
+      (setq org-id-files (mapcar 'car org-id-locations))
+      (org-id-locations-save) ;; this function can also handle the alist form
+      ;; now convert to a hash
+      (setq org-id-locations (org-id-alist-to-hash org-id-locations))
+      (if (> ndup 0)
+	  (message "WARNING: %d duplicate IDs found, check *Messages* buffer" ndup)
+	(message "%d unique files scanned for IDs" (length org-id-files)))
+      org-id-locations)))
+
+(defun org-id-locations-save ()
+  "Save `org-id-locations' in `org-id-locations-file'."
+  (when (and org-id-track-globally org-id-locations)
+    (let ((out (if (hash-table-p org-id-locations)
+		   (org-id-hash-to-alist org-id-locations)
+		 org-id-locations)))
+      (with-temp-file org-id-locations-file
+	(print out (current-buffer))))))
+
+(defun org-id-locations-load ()
+  "Read the data from `org-id-locations-file'."
+  (setq org-id-locations nil)
+  (when org-id-track-globally
+    (with-temp-buffer
+      (condition-case nil
+	  (progn
+	    (insert-file-contents-literally org-id-locations-file)
+	    (goto-char (point-min))
+	    (setq org-id-locations (read (current-buffer))))
+	(error
+	 (message "Could not read org-id-values from %s. Setting it to nil."
+		  org-id-locations-file))))
+    (setq org-id-files (mapcar 'car org-id-locations))
+    (setq org-id-locations (org-id-alist-to-hash org-id-locations))))
+
+(defun org-id-add-location (id file)
+  "Add the ID with location FILE to the database of ID locations."
+  ;; Only if global tracking is on, and when the buffer has a file
+  (when (and org-id-track-globally id file)
+    (unless org-id-locations (org-id-locations-load))
+    (puthash id (abbreviate-file-name file) org-id-locations)
+    (add-to-list 'org-id-files (abbreviate-file-name file))))
+
+(add-hook 'kill-emacs-hook 'org-id-locations-save)
+
+(defun org-id-hash-to-alist (hash)
+  "Turn an org-id hash into an alist, so that it can be written to a file."
+  (let (res x)
+    (maphash
+     (lambda (k v)
+       (if (setq x (member v res))
+	   (setcdr x (cons k (cdr x)))
+	 (push (list v k) res)))
+     hash)
+    res))
+
+(defun org-id-alist-to-hash (list)
+  "Turn an org-id location list into a hash table."
+  (let ((res (make-hash-table
+	      :test 'equal
+	      :size (apply '+ (mapcar 'length list))))
+	f)
+    (mapc
+     (lambda (x)
+       (setq f (car x))
+       (mapc (lambda (i) (puthash i f res)) (cdr x)))
+     list)
+    res))
+
+(defun org-id-paste-tracker (txt &optional buffer-or-file)
+  "Update any IDs in TXT and assign BUFFER-OR-FILE to them."
+  (when org-id-track-globally
+    (save-match-data
+      (setq buffer-or-file (or buffer-or-file (current-buffer)))
+      (when (bufferp buffer-or-file)
+	(setq buffer-or-file (or (buffer-base-buffer buffer-or-file)
+				 buffer-or-file))
+	(setq buffer-or-file (buffer-file-name buffer-or-file)))
+      (when buffer-or-file
+	(let ((fname (abbreviate-file-name buffer-or-file))
+	      (s 0))
+	  (while (string-match "^[ \t]*:ID:[ \t]+\\([^ \t\n\r]+\\)" txt s)
+	    (setq s (match-end 0))
+	    (org-id-add-location (match-string 1 txt) fname)))))))
+
+;; Finding entries with specified id
+
+;;;###autoload
+(defun org-id-find-id-file (id)
+  "Query the id database for the file in which this ID is located."
+  (unless org-id-locations (org-id-locations-load))
+  (or (and org-id-locations
+	   (hash-table-p org-id-locations)
+	   (gethash id org-id-locations))
+      ;; ball back on current buffer
+      (buffer-file-name (or (buffer-base-buffer (current-buffer))
+			    (current-buffer)))))
+
+(defun org-id-find-id-in-file (id file &optional markerp)
+  "Return the position of the entry ID in FILE.
+If that files does not exist, or if it does not contain this ID,
+return nil.
+The position is returned as a cons cell (file-name . position).  With
+optional argument MARKERP, return the position as a new marker."
+  (let (org-agenda-new-buffers buf pos)
+    (cond
+     ((not file) nil)
+     ((not (file-exists-p file)) nil)
+     (t (with-current-buffer (setq buf (org-get-agenda-file-buffer file))
+	  (setq pos (org-find-entry-with-id id))
+	  (when pos
+	    (if markerp
+		(move-marker (make-marker) pos buf)
+	      (cons file pos))))))))
+
+;; id link type
+
+;; Calling the following function is hard-coded into `org-store-link',
+;; so we do have to add it to `org-store-link-functions'.
+
+;;;###autoload
+(defun org-id-store-link ()
+  "Store a link to the current entry, using its ID."
+  (interactive)
+  (when (and (buffer-file-name (buffer-base-buffer)) (org-mode-p))
+    (let* ((link (org-make-link "id:" (org-id-get-create)))
+	   (case-fold-search nil)
+	   (desc (save-excursion
+		   (org-back-to-heading t)
+		   (or (and (looking-at org-complex-heading-regexp)
+			    (if (match-end 4)
+				(match-string 4)
+			      (match-string 0)))
+		       link))))
+      (org-store-link-props :link link :description desc :type "id")
+      link)))
+
+(defun org-id-open (id)
+  "Go to the entry with id ID."
+  (org-mark-ring-push)
+  (let ((m (org-id-find id 'marker))
+	cmd)
+    (unless m
+      (error "Cannot find entry with ID \"%s\"" id))
+    ;; Use a buffer-switching command in analogy to finding files
+    (setq cmd
+	  (or
+	   (cdr
+	    (assq
+	     (cdr (assq 'file org-link-frame-setup))
+	     '((find-file . switch-to-buffer)
+	       (find-file-other-window . switch-to-buffer-other-window)
+	       (find-file-other-frame . switch-to-buffer-other-frame))))
+	   'switch-to-buffer-other-window))
+    (if (not (equal (current-buffer) (marker-buffer m)))
+	(funcall cmd (marker-buffer m)))
+    (goto-char m)
+    (move-marker m nil)
+    (org-show-context)))
+
+(org-add-link-type "id" 'org-id-open)
+
+(provide 'org-id)
+
+;;; org-id.el ends here
+
+;; arch-tag: e5abaca4-e16f-4b25-832a-540cfb63a712
+
+