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+;;; remember --- a mode for quickly jotting down things to remember
+
+;; Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005, 2006,
+;;   2007 Free Software Foundation, Inc.
+
+;; Author: John Wiegley <johnw@gnu.org>
+;; Created: 29 Mar 1999
+;; Version: 1.9
+;; Keywords: data memory todo pim
+;; URL: http://gna.org/projects/remember-el/
+
+;; 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, 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; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Commentary:
+
+;; * The idea
+;;
+;; Todo lists, schedules, phone databases... everything we use
+;; databases for is really just a way to extend the power of our
+;; memory.  To be able to remember what our conscious mind may not
+;; currently have access to.
+;;
+;; There are many different databases out there -- and good ones --
+;; which this mode is not trying to replace.  Rather, it's how that
+;; data gets there that's the question.  Most of the time, we just
+;; want to say "Remember so-and-so's phone number, or that I have to
+;; buy dinner for the cats tonight."  That's the FACT.  How it's
+;; stored is really the computer's problem.  But at this point in
+;; time, it's most definitely also the user's problem, and sometimes
+;; so laboriously so that people just let data slip, rather than
+;; expend the effort to record it.
+;;
+;; "Remember" is a mode for remembering data.  It uses whatever
+;; back-end is appropriate to record and correlate the data, but it's
+;; main intention is to allow you to express as _little_ structure as
+;; possible up front.  If you later want to express more powerful
+;; relationships between your data, or state assumptions that were at
+;; first too implicit to be recognized, you can "study" the data later
+;; and rearrange it.  But the initial "just remember this" impulse
+;; should be as close to simply throwing the data at Emacs as
+;; possible.
+;;
+;; * Implementation
+;;
+;; Hyperbole, as a data presentation tool, always struck me as being
+;; very powerful, but it seemed to require a lot of "front-end" work
+;; before that data was really available.  The problem with BBDB, or
+;; keeping up a Bibl-mode file, is that you have to use different
+;; functions to record the data, and it always takes time to stop what
+;; you're doing, format the data in the manner expected by that
+;; particular data interface, and then resume your work.
+;;
+;; With "remember", you just hit `M-x remember' (you'd probably want
+;; to bind this to an easily accessible keystroke, like C-x M-r), slam
+;; in your text however you like, and then hit C-c C-c.  It will file
+;; the data away for later retrieval, and possibly indexing.
+;;
+;; Indexing is to data what "studying" is in the real world.  What you
+;; do when you study (or lucubrate, for some of us) is to realize
+;; certain relationships implicit in the data, so that you can make
+;; use of those relationships.  Expressing that a certain quote you
+;; remembered was a religious quote, and that you want the ability to
+;; pull up all quotes of a religious nature, is what studying does.
+;; This is a more labor intensive task than the original remembering
+;; of the data, and it's typical in real life to set aside a special
+;; period of time for doing this work.
+;;
+;; "Remember" works in the same way.  When you enter data, either by
+;; typing it into a buffer, or using the contents of the selected
+;; region, it will store that data -- unindexed, uninterpreted -- in a
+;; data pool.  It will also try to remember as much context
+;; information as possible (any text properties that were set, where
+;; you copied it from, when, how, etc).  Later, you can walk through
+;; your accumulated set of data (both organized, and unorganized) and
+;; easily begin moving things around, and making annotations that will
+;; express the full meaning of that data, as far as you know it.
+;;
+;; Obviously this latter stage is more user-interface intensive, and
+;; it would be nice if "remember" could do it as elegantly as
+;; possible, rather than requiring a billion keystrokes to reorganize
+;; your hierarchy.  Well, as the future arrives, hopefully experience
+;; and user feedback will help to make this as intuitive a tool as
+;; possible.
+;;
+;; * Future Goals
+;;
+;; This tool hopes to track (and by doing it with as little new code
+;; as possible):
+;;
+;;  - The raw data that gets entered
+;;
+;;  - The relationships between that data (either determined
+;;    implicitly by parsing the input, or explicitly by the user's
+;;    studying the data).
+;;
+;;  - Revisioning of the data
+;;
+;;  - Where it came from, and any context information that can be
+;;    programmatically determined.
+;;
+;;  - Allowing particular views of the initially amorphous data pool
+;;    (ala the Xanadu concept).
+;;
+;;  - Storage of the data in a manner most appopriate to that data,
+;;    such as keeping address-book type information in BBDB, etc.
+;;
+;; * Using "remember"
+;;
+;; As a rough beginning, what I do is to keep my .notes file in
+;; outline-mode format, with a final entry called "* Raw data".  Then,
+;; at intervals, I can move the data that gets appended there into
+;; other places.  But certainly this should evolve into an intuitive
+;; mechanism for shuffling data off to its appropriate corner of the
+;; universe.
+;;
+;; To map the primary remember function to the keystroke F8, do the
+;; following.
+;;
+;;   (autoload 'remember "remember" nil t)
+;;
+;;   (define-key global-map [f8] 'remember)
+;;
+;; * Feedback
+;;
+;; If Emacs could become a more intelligent data store, where
+;; brainstorming would focus on the IDEAS involved -- rather than the
+;; structuring and format of those ideas, or having to stop your
+;; current flow of work in order to record them -- it would map much
+;; more closely to how the mind (well, at least mine) works, and hence
+;; would eliminate that very manual-ness which computers from the very
+;; beginning have been championed as being able to reduce.
+;;
+;; Have you ever noticed that having a laptop to write on doesn't
+;; _actually_ increase the amount of quality material that you turn
+;; out, in the long run?  Perhaps its because the time we save
+;; electronically in one way, we're losing electronically in another;
+;; the tool should never dominate one's focus.  As the mystic
+;; Faridu'd-Din `Attar wrote: "Be occupied as little as possible with
+;; things of the outer world but much with things of the inner world;
+;; then right action will overcome inaction."
+
+;;; History:
+
+;;; Code:
+
+(provide 'remember)
+
+(defconst remember-version "1.9"
+  "This version of remember.")
+
+(defgroup remember nil
+  "A mode to remember information."
+  :group 'data)
+
+;;; User Variables:
+
+(defcustom remember-mode-hook nil
+  "Functions run upon entering `remember-mode'."
+  :type 'hook
+  :options '(flyspell-mode turn-on-auto-fill org-remember-apply-template)
+  :group 'remember)
+
+(defcustom remember-in-new-frame nil
+  "Non-nil means use a separate frame for capturing remember data."
+  :type 'boolean
+  :group 'remember)
+
+(defcustom remember-register ?R
+  "The register in which the window configuration is stored."
+  :type 'character
+  :group 'remember)
+
+(defcustom remember-filter-functions nil
+  "*Functions run to filter remember data.
+All functions are run in the remember buffer."
+  :type 'hook
+  :group 'remember)
+
+(defcustom remember-handler-functions '(remember-append-to-file)
+  "*Functions run to process remember data.
+Each function is called with the current buffer narrowed to what the
+user wants remembered.
+If any function returns non-nil, the data is assumed to have been
+recorded somewhere by that function. "
+  :type 'hook
+  :options '(remember-store-in-mailbox
+             remember-append-to-file
+             remember-diary-extract-entries
+             org-remember-handler)
+  :group 'remember)
+
+(defcustom remember-all-handler-functions nil
+  "If non-nil every function in `remember-handler-functions' is
+called."
+  :type 'boolean
+  :group 'remember)
+
+;;; Internal Variables:
+
+(defvar remember-buffer "*Remember*"
+  "The name of the remember data entry buffer.")
+
+(defcustom remember-save-after-remembering t
+  "*Non-nil means automatically save after remembering."
+  :type 'boolean
+  :group 'remember)
+
+;;; User Functions:
+
+(defcustom remember-annotation-functions '(buffer-file-name)
+  "Hook that returns an annotation to be inserted into the remember buffer."
+  :type 'hook
+  :options '(org-remember-annotation buffer-file-name)
+  :group 'remember)
+
+(defvar remember-annotation nil
+  "Current annotation.")
+(defvar remember-initial-contents nil
+  "Initial contents to place into *Remember* buffer.")
+
+(defcustom remember-before-remember-hook nil
+  "Functions run before switching to the *Remember* buffer."
+  :type 'hook
+  :group 'remember)
+
+(defcustom remember-run-all-annotation-functions-flag nil
+  "Non-nil means use all annotations returned by
+`remember-annotation-functions'."
+  :type 'boolean
+  :group 'remember)
+
+;;;###autoload
+(defun remember (&optional initial)
+  "Remember an arbitrary piece of data.
+INITIAL is the text to initially place in the *Remember* buffer,
+or nil to bring up a blank *Remember* buffer.
+
+With a prefix, use the region as INITIAL."
+  (interactive
+   (list (when current-prefix-arg
+           (buffer-substring (point) (mark)))))
+  (funcall (if remember-in-new-frame
+               #'frame-configuration-to-register
+             #'window-configuration-to-register) remember-register)
+  (let* ((annotation
+          (if remember-run-all-annotation-functions-flag
+              (mapconcat 'identity
+                         (delq nil
+                               (mapcar 'funcall remember-annotation-functions))
+                         "\n")
+            (run-hook-with-args-until-success
+             'remember-annotation-functions)))
+         (buf (get-buffer-create remember-buffer)))
+    (run-hooks 'remember-before-remember-hook)
+    (funcall (if remember-in-new-frame
+                 #'switch-to-buffer-other-frame
+               #'switch-to-buffer-other-window) buf)
+    (if remember-in-new-frame
+        (set-window-dedicated-p
+         (get-buffer-window (current-buffer) (selected-frame)) t))
+    (remember-mode)
+    (when (= (point-max) (point-min))
+      (when initial (insert initial))
+      (setq remember-annotation annotation)
+      (when remember-initial-contents (insert remember-initial-contents))
+      (when (and (stringp annotation)
+                 (not (equal annotation "")))
+        (insert "\n\n" annotation))
+      (setq remember-initial-contents nil)
+      (goto-char (point-min)))
+    (message "Use C-c C-c to remember the data.")))
+
+;;;###autoload
+(defun remember-other-frame (&optional initial)
+  "Call `remember' in another frame."
+  (interactive
+   (list (when current-prefix-arg
+           (buffer-substring (point) (mark)))))
+  (let ((remember-in-new-frame t))
+    (remember initial)))
+
+(defsubst remember-time-to-seconds (time)
+  "Convert TIME to a floating point number."
+  (+ (* (car time) 65536.0)
+     (cadr time)
+     (/ (or (car (cdr (cdr time))) 0) 1000000.0)))
+
+(defsubst remember-mail-date (&optional rfc822-p)
+  "Return a simple date.  Nothing fancy."
+  (if rfc822-p
+      (format-time-string "%a, %e %b %Y %T %z" (current-time))
+    (format-time-string "%c" (current-time))))
+
+(defun remember-buffer-desc ()
+  "Using the first line of the current buffer, create a short description."
+  (buffer-substring (point-min)
+                    (save-excursion
+                      (goto-char (point-min))
+                      (end-of-line)
+                      (if (> (- (point) (point-min)) 60)
+                          (goto-char (+ (point-min) 60)))
+                      (point))))
+
+;; Remembering to UNIX mailboxes
+
+(defcustom remember-mailbox "~/Mail/remember"
+  "*The file in which to store remember data as mail."
+  :type 'file
+  :group 'remember)
+
+(defcustom remember-default-priority "medium"
+  "*The default priority for remembered mail messages."
+  :type 'string
+  :group 'remember)
+
+(defun remember-store-in-mailbox ()
+  "Store remember data as if it were incoming mail.
+In which case `remember-mailbox' should be the name of the mailbox.
+Each piece of psuedo-mail created will have an `X-Todo-Priority'
+field, for the purpose of appropriate splitting."
+  (let ((who (read-string "Who is this item related to? "))
+        (moment
+         (format "%.0f" (remember-time-to-seconds (current-time))))
+        (desc (remember-buffer-desc))
+        (text (buffer-string)))
+    (with-temp-buffer
+      (insert (format "
+From %s  %s
+Date: %s
+From: %s
+Message-Id: <remember-%s@%s>
+X-Todo-Priority: %s
+To: %s <%s>
+Subject: %s\n\n"
+                      (user-login-name)
+                      (remember-mail-date)
+                      (remember-mail-date t)
+                      who
+                      moment (system-name)
+                      remember-default-priority
+                      (user-full-name) user-mail-address
+                      desc))
+      (let ((here (point)))
+        (insert text)
+        (unless (bolp)
+          (insert "\n"))
+        (insert "\n")
+        (goto-char here)
+        (while (re-search-forward "^\\(From[: ]\\)" nil t)
+          (replace-match ">\\1")))
+      (append-to-file (point-min) (point-max) remember-mailbox)
+      t)))
+
+;; Remembering to plain files
+
+(defcustom remember-data-file "~/.notes"
+  "*The file in which to store unprocessed data."
+  :type 'file
+  :group 'remember)
+
+(defcustom remember-leader-text "** "
+  "*The text used to begin each remember item."
+  :type 'string
+  :group 'remember)
+
+(defun remember-append-to-file ()
+  "Remember, with description DESC, the given TEXT."
+  (let ((text (buffer-string))
+        (desc (remember-buffer-desc)))
+    (with-temp-buffer
+      (insert "\n" remember-leader-text (current-time-string)
+              " (" desc ")\n\n" text)
+      (if (not (bolp))
+          (insert "\n"))
+      (if (find-buffer-visiting remember-data-file)
+          (let ((remember-text (buffer-string)))
+            (set-buffer (get-file-buffer remember-data-file))
+            (save-excursion
+              (goto-char (point-max))
+              (insert remember-text)
+              (when remember-save-after-remembering (save-buffer))))
+        (append-to-file (point-min) (point-max) remember-data-file)))))
+
+(defun remember-region (&optional beg end)
+  "Remember the data from BEG to END.
+It is called from within the *Remember* buffer to save the text
+that was entered,
+
+If BEG and END are nil, the entire buffer will be remembered.
+
+If you want to remember a region, supply a universal prefix to
+`remember' instead.  For example: C-u M-x remember RET."
+  ;; Sacha: I have no idea where remember.el gets this context information, but
+  ;; you can just use remember-annotation-functions.
+  (interactive)
+  (let ((b (or beg (min (point) (or (mark) (point-min)))))
+        (e (or end (max (point) (or (mark) (point-max))))))
+    (save-restriction
+      (narrow-to-region b e)
+      (if remember-all-handler-functions
+          (run-hooks 'remember-handler-functions)
+        (run-hook-with-args-until-success 'remember-handler-functions))
+      (remember-destroy))))
+
+;;;###autoload
+(defun remember-clipboard ()
+  "Remember the contents of the current clipboard.
+Most useful for remembering things from Netscape or other X Windows
+application."
+  (interactive)
+  (remember (current-kill 0)))
+
+(defun remember-finalize ()
+  "Remember the contents of the current buffer."
+  (interactive)
+  (remember-region (point-min) (point-max)))
+
+;; Org needs this
+(define-obsolete-function-alias 'remember-buffer 'remember-finalize)
+
+(defun remember-destroy ()
+  "Destroy the current *Remember* buffer."
+  (interactive)
+  (when (equal remember-buffer (buffer-name))
+    (kill-buffer (current-buffer))
+    (jump-to-register remember-register)))
+
+;;; Internal Functions:
+
+(defvar remember-mode-map
+  (let ((map (make-sparse-keymap)))
+    (define-key map "\C-x\C-s" 'remember-finalize)
+    (define-key map "\C-c\C-c" 'remember-finalize)
+    (define-key map "\C-c\C-k" 'remember-destroy)
+
+    map)
+  "Keymap used in Remember mode.")
+
+(defun remember-mode ()
+  "Major mode for output from \\[remember].
+This buffer is used to collect data that you want to remember.
+
+Just hit `C-c C-c' when you're done entering, and it will file
+the data away for latter retrieval, and possible indexing.
+
+\\{remember-mode-map}"
+  (interactive)
+  (kill-all-local-variables)
+  (indented-text-mode)
+  (use-local-map remember-mode-map)
+  (setq major-mode 'remember-mode
+        mode-name "Remember")
+  (run-hooks 'remember-mode-hook))
+
+;; arch-tag: 59312a05-06c7-4da1-b6f7-5ea41c9d5577
+;;; remember.el ends here