initial steps

contrib/README

@@ -14,11 +14,13 @@ org-annotate-file.el --- Annotate a file with org syntax
 org-bookmark.el      --- Org links to bookmarks
 org-depend.el        --- TODO dependencies for Org-mode
 org-elisp-symbol.el  --- Org links to emacs-lisp symbols
+org-eval.el          --- The <lisp> tag, adapted from Muse
 org-expiry.el 	     --- expiry mechanism for Org entries
 org-id.el 	     --- Global id's for identifying entries
 org-interactive-query.el --- Interactive modification of tags query
 org-mairix.el 	     --- Hook mairix search into Org for different MUAs
 org-man.el 	     --- Support for links to manpages in Org-mode
+org-mtags.el 	     --- Support for some Muse-like tags in Org-mode
 org-panel.el 	     --- Simple routines for us with bad memory
 org-registry.el      --- a registry for Org links
 org2rem.el           --- Convert org appointments into reminders

contrib/lisp/org-mtags.el

@@ -0,0 +1,184 @@
+;;; org-mtags.el --- Muse-like tags in Org-mode
+;; Copyright (C) 2008 Free Software Foundation, Inc.
+;;
+;; Author: Carsten Dominik <carsten at orgmode dot org>
+;; Keywords: outlines, hypermedia, calendar, wp
+;; Homepage: http://orgmode.org
+;; Version: 0.01
+;;
+;; This file is not yet 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:
+;;
+;; This modules implements some of the formatting tags available in
+;; Emacs Muse.  The goal of this devellopment is to  make it easier for
+;; people to move between both worlds, and eventually to allow Org files
+;; to be published as parts of the Muse environment.
+
+(require 'org)
+
+;;; Customization
+
+(defgroup org-eval nil
+  "Options concerning including output from commands into the Org-mode buffer."
+  :tag "Org Eval"
+  :group 'org)
+
+(defface org-eval
+  (org-compatible-face nil
+    '((((class color grayscale) (min-colors 88) (background light))
+       (:foreground "grey40"))
+      (((class color grayscale) (min-colors 88) (background dark))
+       (:foreground "grey60"))
+      (((class color) (min-colors 8) (background light))
+       (:foreground "green"))
+      (((class color) (min-colors 8) (background dark))
+       (:foreground "yellow"))))
+  "Face for command output that is included into an Org-mode buffer."
+  :group 'org-eval
+  :group 'org-faces
+  :version "22.1")
+
+(defvar org-eval-regexp nil)
+
+(defun org-eval-set-interpreters (var value)
+  (set-default var value)
+  (setq org-eval-regexp
+	(concat "<\\("
+		(mapconcat 'regexp-quote value "\\|")
+		"\\)"
+		"\\([^>]\\{0,50\\}?\\)>"
+		"\\([^\000]+?\\)</\\1>")))
+
+(defcustom org-eval-interpreters '("lisp")
+  "Interpreters allows for evaluation tags.
+This is a list of program names (as strings) that can evaluate code and
+insert the output into an Org-mode buffer.  Valid choices are 
+
+lisp    Interpret Emacs Lisp code and display the result
+shell   Pass command to the shell and display the result
+perl    The perl interpreter
+python  Thy python interpreter
+ruby    The ruby interpreter"
+  :group 'org-eval
+  :set 'org-eval-set-interpreters
+  :type '(set :greedy t
+	      (const "lisp")
+	      (const "perl")
+	      (const "python")
+	      (const "ruby")
+	      (const "shell")))
+  
+(defun org-eval-handle-snippets (limit &optional replace)
+  "Evaluate code nisppets and display the results as display property.
+When REPLACE is non-nil, replace the code region with the result (used
+for export)."
+  (let (a)
+    (while (setq a (text-property-any (point) (or limit (point-max))
+				      'org-eval t))
+      (remove-text-properties
+       a (next-single-property-change a 'org-eval nil limit)
+       '(display t intangible t org-eval t))))
+  (while (re-search-forward org-eval-regexp limit t)
+    (let* ((beg (match-beginning 0))
+	   (end (match-end 0))
+	   (kind (match-string 1))
+	   (attr (match-string 2))
+	   (code (match-string 3))
+	   (value (org-eval-code kind code))
+	   markup lang)
+      (if replace
+	  (progn
+	    (setq attr (save-match-data (org-eval-get-attributes attr))
+		  markup (cdr (assoc "markup" attr))
+		  lang  (cdr (assoc "lang" attr)))
+	    (replace-match
+	     (concat (if markup (format "#+BEGIN_%s" (upcase markup)))
+		     (if (and markup (equal (downcase markup) "src"))
+			 (concat " " (or lang "fundamental")))
+		     "\n"
+		     value
+		     (if markup (format "\n#+END_%s\n" (upcase markup))))
+	     t t))
+	(add-text-properties
+	 beg end
+	 (list 'display value 'intangible t 'font-lock-multiline t
+	       'face 'org-eval
+	       'org-eval t))))))
+
+(defun org-eval-replace-snippts ()
+  "Replace EVAL snippets in the entire buffer.
+This should go into the `org-export-preprocess-hook'."
+  (goto-char (point-min))
+  (org-eval-handle-snippets nil 'replace))
+
+(add-hook 'org-export-preprocess-hook 'org-eval-replace-snippts)
+(add-hook 'org-font-lock-hook 'org-eval-handle-snippets)
+
+(defun org-eval-get-attributes (str)
+  (let ((start 0) key value rtn)
+    (while (string-match "\\<\\([a-zA-Z]+\\)\\>=\"\\([^\"]+\\)\"" str start)
+      (setq key (match-string 1 str)
+	    value (match-string 2 str)
+	    start (match-end 0))
+      (push (cons key value) rtn))
+    rtn))
+
+(defun org-eval-code (interpreter code)
+  (cond
+   ((equal interpreter "lisp")
+    (org-eval-lisp (concat "(progn\n" code "\n)")))
+   ((equal interpreter "shell")
+    (shell-command-to-string code))
+   ((member interpreter '("perl" "python" "ruby"))
+    (org-eval-run (executable-find interpreter) code))
+   (t (error "Cannot evaluate code type %s" interpreter))))
+
+(defun org-eval-lisp (form)
+  "Evaluate the given form and return the result as a string."
+  (require 'pp)
+  (save-match-data
+    (condition-case err
+        (let ((object (eval (read form))))
+          (cond
+           ((stringp object) object)
+           ((and (listp object)
+                 (not (eq object nil)))
+            (let ((string (pp-to-string object)))
+              (substring string 0 (1- (length string)))))
+           ((numberp object)
+            (number-to-string object))
+           ((eq object nil) "")
+           (t
+            (pp-to-string object))))
+      (error
+       (org-display-warning (format "%s: Error evaluating %s: %s"
+                                     "???" form err))
+       "; INVALID LISP CODE"))))
+
+(defun org-eval-run (cmd code)
+  (with-temp-buffer
+    (insert code)
+    (shell-command-on-region (point-min) (point-max) cmd nil 'replace)
+    (buffer-string)))  
+
+(provide 'org-eval)
+
+;;; org-eval.el ends here
+

lisp/org.el

@@ -182,6 +182,7 @@ to add the symbol `xyz', and the package must have a call to
 	(const :tag "C  interactive-query: Interactive modification of tags query" org-interactive-query)
 	(const :tag "C  mairix:            Hook mairix search into Org for different MUAs" org-mairix)
 	(const :tag "C  man:               Support for links to manpages in Org-mode" org-man)
+	(const :tag "C  mtags:             Support for muse-like tags" org-mtags)
 	(const :tag "C  panel:             Simple routines for us with bad memory" org-panel)
 	(const :tag "C  registry:          A registry for Org links" org-registry)
 	(const :tag "C  org2rem:           Convert org appointments into reminders" org2rem)