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Anonymous committed a588981

Move Ruby stuff from prog-modes to ruby-modes.

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+_pkg.el
+auto-autoloads.el
+custom-load.el
+package-info
+pdepends.mk
+2002-09-18  Ville Skyttä  <ville.skytta@xemacs.org>
+
+	* Package created, moved Ruby modes from the prog-modes
+	package here.
+
+# Makefile for Ruby modes lisp code
+
+# This file is part of XEmacs.
+
+# XEmacs 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 2, or (at your option) any
+# later version.
+
+# XEmacs 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 XEmacs; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+VERSION = 0.99
+AUTHOR_VERSION =
+MAINTAINER = XEmacs Development Team <xemacs-beta@xemacs.org>
+PACKAGE = ruby-modes
+PKG_TYPE = single-file
+REQUIRES = xemacs-base
+CATEGORY = standard
+
+ELCS = inf-ruby.elc ruby-mode.elc
+
+include ../../XEmacs.rules
+
+GENERATED += custom-load.elc
+
+all:: $(ELCS) auto-autoloads.elc custom-load.elc
+
+srckit: srckit-std
+
+binkit: binkit-common
+;;; -*-Emacs-Lisp-*-
+;;;
+;;;  $Id$
+;;;  $Author$
+;;;  $Date$
+;;;
+;;; Inferior Ruby Mode - ruby process in a buffer.
+;;;                      adapted from cmuscheme.el
+;;;
+;;; Usage:
+;;;
+;;; (0) check ruby-program-name variable that can run your environment.
+;;;
+;;; (1) modify .emacs to use ruby-mode 
+;;;     for example :
+;;;
+;;;    (autoload 'ruby-mode "ruby-mode"
+;;;      "Mode for editing ruby source files")
+;;;    (setq auto-mode-alist
+;;;          (append '(("\\.rb$" . ruby-mode)) auto-mode-alist))
+;;;    (setq interpreter-mode-alist (append '(("ruby" . ruby-mode))
+;;;    				     interpreter-mode-alist))
+;;;    
+;;; (2) set to road inf-ruby and set inf-ruby key definition in ruby-mode.
+;;;
+;;;    (autoload 'run-ruby "inf-ruby"
+;;;      "Run an inferior Ruby process")
+;;;    (autoload 'inf-ruby-keys "inf-ruby"
+;;;      "Set local key defs for inf-ruby in ruby-mode")
+;;;    (add-hook 'ruby-mode-hook
+;;;          '(lambda ()
+;;;             (inf-ruby-keys)
+;;;    ))
+;;;
+;;; HISTORY
+;;; senda -  8 Apr 1998: Created.
+;;;	 $Log$
+;;;	 Revision 1.3.2.2  2002/08/19 10:06:20  nobu
+;;;	 * misc/inf-ruby.el (inf-ruby-keys): ruby-send-definition
+;;;	   conflicted with ruby-insert-end.
+;;;
+;;;	 * misc/inf-ruby.el (inferior-ruby-mode): compilation-minor-mode.
+;;;
+;;;	 * misc/inf-ruby.el (ruby-send-region): send as here document to
+;;;	   adjust source file/line.  [ruby-talk:47113], [ruby-dev:17965]
+;;;
+;;;	 * misc/inf-ruby.el (ruby-send-terminator): added to make unique
+;;;	   terminator.
+;;;
+;;;	 Revision 1.3  1999/12/01 09:24:18  matz
+;;;	 19991201
+;;;	
+;;;	 Revision 1.2  1999/08/13 05:45:18  matz
+;;;	 1.4.0
+;;;	
+;;;	 Revision 1.1.1.1.2.1  1999/07/15 07:59:59  matz
+;;;	 990715
+;;;	
+;;;	 Revision 1.1.1.1  1999/01/20 04:59:36  matz
+;;;	 ruby 1.3 cycle
+;;;	
+;;;	 Revision 1.1.2.1  1998/12/16 07:30:36  matz
+;;;	 first public release of 1.1d (pre1.2) series
+;;;	
+;;;	 Revision 1.4  1998/05/20 02:45:58  senda
+;;;	 default program to irb
+;;;
+;;;	 Revision 1.3  1998/04/10 04:11:30  senda
+;;;	 modification by Matsumoto san (1.1b9_09)
+;;;	 remove-in-string defined
+;;;	 global variable :
+;;;	 	 inferior-ruby-first-prompt-pattern
+;;;	       inferior-ruby-prompt-pattern
+;;;	 defined
+;;;
+;;;	 Revision 1.2  1998/04/09 07:53:42  senda
+;;;	 remove M-C-x in inferior-ruby-mode
+;;;
+;;;	 Revision 1.1  1998/04/09 07:28:36  senda
+;;;	 Initial revision
+;;;
+;;;
+
+(require 'comint)
+(require 'compile)
+(require 'ruby-mode)
+
+(defgroup ruby-inferior-mode nil
+  "Major mode for interacting with an inferior ruby (irb) process."
+  :group 'ruby
+  :prefix "inferior-ruby-")
+
+;;;; for irb
+(defcustom ruby-program-name "irb --inf-ruby-mode"
+  "*Program invoked by the `run-ruby' command."
+  :type 'string
+  :group 'ruby-inferior-mode)
+
+(defcustom inferior-ruby-first-prompt-pattern "^irb(.*)[0-9:]+0> *"
+  "*First prompt regex pattern of ruby interpreter."
+  :type 'regexp
+  :group 'ruby-inferior-mode)
+
+(defcustom inferior-ruby-prompt-pattern "^\\(irb(.*)[0-9:]+[>*\"'] *\\)+"
+  "*Prompt regex pattern of ruby interpreter."
+  :type 'regexp
+  :group 'ruby-inferior-mode)
+
+;;
+;; mode variables
+;;
+(defcustom inferior-ruby-mode-hook nil
+  "*Hook for customising `inferior-ruby-mode'."
+  :type 'hook
+  :group 'ruby-inferior-mode)
+
+(defvar inferior-ruby-mode-map nil
+  "*Mode map for `inferior-ruby-mode'.")
+
+(pushnew '(ruby ("^\tfrom \\([^\(].*\\):\\([1-9][0-9]*\\):in \`.*\'$" 1 2))
+	 compilation-error-regexp-alist-alist)
+(pushnew '(ruby ("SyntaxError: compile error\n^\\([^\(].*\\):\\([1-9][0-9]*\\):" 1 2))
+	 compilation-error-regexp-alist-alist)
+
+(cond ((not inferior-ruby-mode-map)
+       (setq inferior-ruby-mode-map
+	     (copy-keymap comint-mode-map))
+;       (define-key inferior-ruby-mode-map "\M-\C-x" ;gnu convention
+;	           'ruby-send-definition)
+;       (define-key inferior-ruby-mode-map "\C-x\C-e" 'ruby-send-last-sexp)
+       (define-key inferior-ruby-mode-map "\C-c\C-l" 'ruby-load-file)
+))
+
+(defcustom inferior-ruby-filter-regexp "\\`\\s *\\S ?\\S ?\\s *\\'"
+  "*Input matching this regexp are not saved on the history list.
+Defaults to a regexp ignoring all inputs of 0, 1, or 2 letters."
+  :type 'regexp
+  :group 'ruby-inferior-mode)
+
+;;;###autoload
+(defun inf-ruby-keys ()
+  "Set local key defs for inf-ruby in `ruby-mode'."
+  (define-key ruby-mode-map "\M-\C-x" 'ruby-send-definition)
+;  (define-key ruby-mode-map "\C-x\C-e" 'ruby-send-last-sexp)
+  (define-key ruby-mode-map "\C-c\C-b" 'ruby-send-block)
+  (define-key ruby-mode-map "\C-c\M-b" 'ruby-send-block-and-go)
+  (define-key ruby-mode-map "\C-c\C-x" 'ruby-send-definition)
+  (define-key ruby-mode-map "\C-c\M-x" 'ruby-send-definition-and-go)
+  (define-key ruby-mode-map "\C-c\C-r" 'ruby-send-region)
+  (define-key ruby-mode-map "\C-c\M-r" 'ruby-send-region-and-go)
+  (define-key ruby-mode-map "\C-c\C-z" 'switch-to-ruby)
+  (define-key ruby-mode-map "\C-c\C-l" 'ruby-load-file)
+  (define-key ruby-mode-map "\C-c\C-s" 'run-ruby)
+)
+
+(defvar ruby-buffer nil
+  "Current ruby (actually irb) process buffer.")
+
+(defun inferior-ruby-mode ()
+  "Major mode for interacting with an inferior ruby (irb) process.
+
+The following commands are available:
+\\{inferior-ruby-mode-map}
+
+A ruby process can be fired up with \\[run-ruby].
+
+Customisation:
+
+Entry to this mode runs the hooks on `comint-mode-hook' and
+`inferior-ruby-mode-hook' (in that order).
+
+You can send text to the inferior ruby process from other buffers containing
+Ruby source.
+    `switch-to-ruby' switches the current buffer to the ruby process buffer.
+    `ruby-send-definition' sends the current definition to the ruby process.
+    `ruby-send-region' sends the current region to the ruby process.
+
+    `ruby-send-definition-and-go', `ruby-send-region-and-go',
+        switch to the ruby process buffer after sending their text.
+
+For information on running multiple processes in multiple buffers, see
+documentation for variable `ruby-buffer'.
+
+Commands:
+
+Return after the end of the process' output sends the text from the end of
+process to point.
+
+Return before the end of the process' output copies the sexp ending at
+point to the end of the process' output, and sends it.
+
+Delete converts tabs to spaces as it moves back.
+
+Tab indents for ruby; with argument, shifts rest of expression rigidly with
+the current line.
+
+C-M-q does Tab on each line starting within following expression.
+
+Paragraphs are separated only by blank lines.
+
+# start comments.
+
+If you accidentally suspend your process, use \\[comint-continue-subjob]
+to continue it."
+  (interactive)
+  (comint-mode)
+  ;; Customise in inferior-ruby-mode-hook
+  ;(setq comint-prompt-regexp "^[^>\n]*>+ *")
+  (setq comint-prompt-regexp inferior-ruby-prompt-pattern)
+  ;;(scheme-mode-variables)
+  (ruby-mode-variables)
+  (setq major-mode 'inferior-ruby-mode)
+  (setq mode-name "Inferior Ruby")
+  (setq mode-line-process '(":%s"))
+  (use-local-map inferior-ruby-mode-map)
+  (setq comint-input-filter (function ruby-input-filter))
+  (setq comint-get-old-input (function ruby-get-old-input))
+  (compilation-minor-mode)
+  (compilation-build-compilation-error-regexp-alist)
+  (run-hooks 'inferior-ruby-mode-hook))
+
+(defun ruby-input-filter (str)
+  "Don't save anything matching `inferior-ruby-filter-regexp'."
+  (not (string-match inferior-ruby-filter-regexp str)))
+
+;; adapted from replace-in-string in XEmacs (subr.el)
+(defun remove-in-string (str regexp)
+  "Remove all matches in STR for REGEXP and returns the new string."
+  (let ((rtn-str "") (start 0) match prev-start)
+    (while (setq match (string-match regexp str start))
+      (setq prev-start start
+	    start (match-end 0)
+	    rtn-str (concat rtn-str (substring str prev-start match))))
+    (concat rtn-str (substring str start))))
+
+(defun ruby-get-old-input ()
+  "Snarf the sexp ending at point."
+  (save-excursion
+    (let ((end (point)))
+      (re-search-backward inferior-ruby-first-prompt-pattern)
+      (remove-in-string (buffer-substring (point) end)
+			inferior-ruby-prompt-pattern)
+      )))
+
+(defun ruby-args-to-list (string)
+  (let ((where (string-match "[ \t]" string)))
+    (cond ((null where) (list string))
+	  ((not (= where 0))
+	   (cons (substring string 0 where)
+		 (ruby-args-to-list (substring string (+ 1 where)
+						 (length string)))))
+	  (t (let ((pos (string-match "[^ \t]" string)))
+	       (if (null pos)
+		   nil
+		 (ruby-args-to-list (substring string pos
+						 (length string)))))))))
+
+;;;###autoload
+(defun run-ruby (cmd)
+  "Run an inferior Ruby process, input and output via buffer *ruby*.
+If there is a process already running in `*ruby*', switch to that buffer.
+With argument, allows you to edit the command line (default is value
+of `ruby-program-name').  Runs the hooks `inferior-ruby-mode-hook'
+\(after the `comint-mode-hook' is run).
+\(Type \\[describe-mode] in the process buffer for a list of commands.)"
+
+  (interactive (list (if current-prefix-arg
+			 (read-string "Run Ruby: " ruby-program-name)
+			 ruby-program-name)))
+  (if (not (comint-check-proc "*ruby*"))
+      (let ((cmdlist (ruby-args-to-list cmd)))
+	(set-buffer (apply 'make-comint "ruby" (car cmdlist)
+			   nil (cdr cmdlist)))
+	(inferior-ruby-mode)))
+  (setq ruby-program-name cmd)
+  (setq ruby-buffer "*ruby*")
+  (pop-to-buffer "*ruby*"))
+
+(defconst ruby-send-terminator "--inf-ruby-%x-%d-%d-%d--"
+  "Template for irb here document terminator.
+Must not contain ruby meta characters.")
+
+(defun ruby-send-region (start end)
+  "Send the current region to the inferior Ruby process."
+  (interactive "r")
+  (let (term (file (buffer-file-name)) line)
+    (save-excursion
+      (goto-char start)
+      (setq line (line-number))
+      (while (progn
+	       (setq term (apply 'format ruby-send-terminator (random) (current-time)))
+	       (re-search-forward (concat "^" (regexp-quote term) "$") end t))))
+    (comint-send-string (ruby-proc) (format "eval <<'%s', nil, %S, %d\n" term file line))
+    (comint-send-region (ruby-proc) start end)
+    (comint-send-string (ruby-proc) (concat "\n" term "\n"))))
+
+(defun ruby-send-definition ()
+  "Send the current definition to the inferior Ruby process."
+  (interactive)
+  (save-excursion
+    (ruby-end-of-defun)
+    (let ((end (point)))
+      (ruby-beginning-of-defun)
+      (ruby-send-region (point) end))))
+
+;(defun ruby-send-last-sexp ()
+;  "Send the previous sexp to the inferior Ruby process."
+;  (interactive)
+;  (ruby-send-region (save-excursion (backward-sexp) (point)) (point)))
+
+(defun ruby-send-block ()
+  "Send the current block to the inferior Ruby process."
+  (interactive)
+  (save-excursion
+    (ruby-end-of-block)
+    (end-of-line)
+    (let ((end (point)))
+      (ruby-beginning-of-block)
+      (ruby-send-region (point) end))))
+
+(defun switch-to-ruby (eob-p)
+  "Switch to the ruby process buffer.
+With argument, positions cursor at end of buffer."
+  (interactive "P")
+  (if (get-buffer ruby-buffer)
+      (pop-to-buffer ruby-buffer)
+      (error "No current process buffer. See variable `ruby-buffer'."))
+  (cond (eob-p
+	 (push-mark)
+	 (goto-char (point-max)))))
+
+(defun ruby-send-region-and-go (start end)
+  "Send the current region to the inferior Ruby process.
+Then switch to the process buffer."
+  (interactive "r")
+  (ruby-send-region start end)
+  (switch-to-ruby t))
+
+(defun ruby-send-definition-and-go ()
+  "Send the current definition to the inferior Ruby. 
+Then switch to the process buffer."
+  (interactive)
+  (ruby-send-definition)
+  (switch-to-ruby t))
+
+(defun ruby-send-block-and-go ()
+  "Send the current block to the inferior Ruby. 
+Then switch to the process buffer."
+  (interactive)
+  (ruby-send-block)
+  (switch-to-ruby t))
+
+(defvar ruby-source-modes '(ruby-mode)
+  "*Used to determine if a buffer contains Ruby source code.
+If it's loaded into a buffer that is in one of these major modes, it's
+considered a ruby source file by `ruby-load-file'.
+Used by these commands to determine defaults.")
+
+(defvar ruby-prev-l/c-dir/file nil
+  "Caches the last (directory . file) pair.
+Caches the last pair used in the last `ruby-load-file' command.
+Used for determining the default in the next one.")
+
+(defun ruby-load-file (file-name)
+  "Load a Ruby file into the inferior Ruby process."
+  (interactive (comint-get-source "Load Ruby file: " ruby-prev-l/c-dir/file
+				  ruby-source-modes t)) ; T because LOAD 
+                                                          ; needs an exact name
+  (comint-check-source file-name) ; Check to see if buffer needs saved.
+  (setq ruby-prev-l/c-dir/file (cons (file-name-directory    file-name)
+				       (file-name-nondirectory file-name)))
+  (comint-send-string (ruby-proc) (concat "(load \""
+					    file-name
+					    "\"\)\n")))
+
+(defun ruby-proc ()
+  "Returns the current ruby process. See variable `ruby-buffer'."
+  (let ((proc (get-buffer-process (if (eq major-mode 'inferior-ruby-mode)
+				      (current-buffer)
+				    ruby-buffer))))
+    (or proc
+	(error "No current process. See variable `ruby-buffer'."))))
+
+;;; Do the user's customisation...
+
+(defvar inf-ruby-load-hook nil
+  "This hook is run when inf-ruby is loaded in.
+This is a good place to put keybindings.")
+	
+(run-hooks 'inf-ruby-load-hook)
+
+;;;###autoload
+(add-to-list 'interpreter-mode-alist '("ruby" . ruby-mode))
+
+;;;###autoload
+(add-hook 'ruby-mode-hook '(lambda () (inf-ruby-keys)))
+
+(provide 'inf-ruby)
+
+;;; inf-ruby.el ends here
+;;; -*-Emacs-Lisp-*-
+;;;
+;;;  $Id$
+;;;  $Author$
+;;;  $Date$
+;;;
+;;; Inferior Ruby Mode - ruby process in a buffer.
+;;;                      adapted from cmuscheme.el
+;;;
+;;; Usage:
+;;;
+;;; (0) check ruby-program-name variable that can run your environment.
+;;;
+;;; (1) modify .emacs to use ruby-mode 
+;;;     for example :
+;;;
+;;;    (autoload 'ruby-mode "ruby-mode"
+;;;      "Mode for editing ruby source files" t)
+;;;    (setq auto-mode-alist
+;;;          (append '(("\\.rb$" . ruby-mode)) auto-mode-alist))
+;;;    (setq interpreter-mode-alist (append '(("ruby" . ruby-mode))
+;;;    				     interpreter-mode-alist))
+;;;    
+;;; (2) set to road inf-ruby and set inf-ruby key definition in ruby-mode.
+;;;
+;;;    (autoload 'run-ruby "inf-ruby"
+;;;      "Run an inferior Ruby process")
+;;;    (autoload 'inf-ruby-keys "inf-ruby"
+;;;      "Set local key defs for inf-ruby in ruby-mode")
+;;;    (add-hook 'ruby-mode-hook
+;;;          '(lambda ()
+;;;             (inf-ruby-keys)
+;;;    ))
+;;;
+;;; HISTORY
+;;; senda -  8 Apr 1998: Created.
+;;;	 $Log$
+;;;	 Revision 1.3.2.2  2002/08/19 10:06:20  nobu
+;;;	 * misc/inf-ruby.el (inf-ruby-keys): ruby-send-definition
+;;;	   conflicted with ruby-insert-end.
+;;;	
+;;;	 * misc/inf-ruby.el (inferior-ruby-mode): compilation-minor-mode.
+;;;	
+;;;	 * misc/inf-ruby.el (ruby-send-region): send as here document to
+;;;	   adjust source file/line.  [ruby-talk:47113], [ruby-dev:17965]
+;;;	
+;;;	 * misc/inf-ruby.el (ruby-send-terminator): added to make unique
+;;;	   terminator.
+;;;	
+;;;	 Revision 1.3.2.1  2002/02/01 06:01:51  matz
+;;;	 * re.c (rb_reg_search): should set regs.allocated.
+;;;	
+;;;	 Revision 1.3  1999/12/01 09:24:18  matz
+;;;	 19991201
+;;;	
+;;;	 Revision 1.2  1999/08/13 05:45:18  matz
+;;;	 1.4.0
+;;;	
+;;;	 Revision 1.1.1.1.2.1  1999/07/15 07:59:59  matz
+;;;	 990715
+;;;	
+;;;	 Revision 1.1.1.1  1999/01/20 04:59:36  matz
+;;;	 ruby 1.3 cycle
+;;;	
+;;;	 Revision 1.1.2.1  1998/12/16 07:30:36  matz
+;;;	 first public release of 1.1d (pre1.2) series
+;;;	
+;;;	 Revision 1.4  1998/05/20 02:45:58  senda
+;;;	 default program to irb
+;;;
+;;;	 Revision 1.3  1998/04/10 04:11:30  senda
+;;;	 modification by Matsumoto san (1.1b9_09)
+;;;	 remove-in-string defined
+;;;	 global variable :
+;;;	 	 inferior-ruby-first-prompt-pattern
+;;;	       inferior-ruby-prompt-pattern
+;;;	 defined
+;;;
+;;;	 Revision 1.2  1998/04/09 07:53:42  senda
+;;;	 remove M-C-x in inferior-ruby-mode
+;;;
+;;;	 Revision 1.1  1998/04/09 07:28:36  senda
+;;;	 Initial revision
+;;;
+;;;
+
+(require 'comint)
+(require 'compile)
+(require 'ruby-mode)
+
+;;
+;; you may change these variables
+;;
+;(defvar ruby-program-name "rbc --noreadline"
+;  "*Program invoked by the run-ruby command")
+;
+;(defvar inferior-ruby-first-prompt-pattern "^rbc0> *"
+;  "first prompt regex pattern of ruby interpreter.")
+;
+;(defvar inferior-ruby-prompt-pattern "^\\(rbc.[>*\"'] *\\)+"
+;  "prompt regex pattern of ruby interpreter.")
+
+;;;; for irb
+(defvar ruby-program-name "irb --inf-ruby-mode"
+  "*Program invoked by the run-ruby command")
+
+(defvar inferior-ruby-first-prompt-pattern "^irb(.*)[0-9:]+0> *"
+  "first prompt regex pattern of ruby interpreter.")
+
+(defvar inferior-ruby-prompt-pattern "^\\(irb(.*)[0-9:]+[>*\"'] *\\)+"
+  "prompt regex pattern of ruby interpreter.")
+
+;;
+;; mode variables
+;;
+(defvar inferior-ruby-mode-hook nil
+  "*Hook for customising inferior-ruby mode.")
+(defvar inferior-ruby-mode-map nil
+  "*Mode map for inferior-ruby-mode")
+
+(pushnew '(ruby ("^\tfrom \\([^\(].*\\):\\([1-9][0-9]*\\):in \`.*\'$" 1 2))
+	 compilation-error-regexp-alist-alist)
+(pushnew '(ruby ("SyntaxError: compile error\n^\\([^\(].*\\):\\([1-9][0-9]*\\):" 1 2))
+	 compilation-error-regexp-alist-alist)
+
+(cond ((not inferior-ruby-mode-map)
+       (setq inferior-ruby-mode-map
+	     (copy-keymap comint-mode-map))
+;       (define-key inferior-ruby-mode-map "\M-\C-x" ;gnu convention
+;	           'ruby-send-definition)
+;       (define-key inferior-ruby-mode-map "\C-x\C-e" 'ruby-send-last-sexp)
+       (define-key inferior-ruby-mode-map "\C-c\C-l" 'ruby-load-file)
+))
+
+(defun inf-ruby-keys ()
+  "Set local key defs for inf-ruby in ruby-mode"
+  (define-key ruby-mode-map "\M-\C-x" 'ruby-send-definition)
+;  (define-key ruby-mode-map "\C-x\C-e" 'ruby-send-last-sexp)
+  (define-key ruby-mode-map "\C-c\C-b" 'ruby-send-block)
+  (define-key ruby-mode-map "\C-c\M-b" 'ruby-send-block-and-go)
+  (define-key ruby-mode-map "\C-c\C-x" 'ruby-send-definition)
+  (define-key ruby-mode-map "\C-c\M-x" 'ruby-send-definition-and-go)
+  (define-key ruby-mode-map "\C-c\C-r" 'ruby-send-region)
+  (define-key ruby-mode-map "\C-c\M-r" 'ruby-send-region-and-go)
+  (define-key ruby-mode-map "\C-c\C-z" 'switch-to-ruby)
+  (define-key ruby-mode-map "\C-c\C-l" 'ruby-load-file)
+  (define-key ruby-mode-map "\C-c\C-s" 'run-ruby)
+)
+
+(defvar ruby-buffer nil "current ruby (actually irb) process buffer.")
+
+(defun inferior-ruby-mode ()
+  "Major mode for interacting with an inferior ruby (irb) process.
+
+The following commands are available:
+\\{inferior-ruby-mode-map}
+
+A ruby process can be fired up with M-x run-ruby.
+
+Customisation: Entry to this mode runs the hooks on comint-mode-hook and
+inferior-ruby-mode-hook (in that order).
+
+You can send text to the inferior ruby process from other buffers containing
+Ruby source.
+    switch-to-ruby switches the current buffer to the ruby process buffer.
+    ruby-send-definition sends the current definition to the ruby process.
+    ruby-send-region sends the current region to the ruby process.
+
+    ruby-send-definition-and-go, ruby-send-region-and-go,
+        switch to the ruby process buffer after sending their text.
+For information on running multiple processes in multiple buffers, see
+documentation for variable ruby-buffer.
+
+Commands:
+Return after the end of the process' output sends the text from the 
+    end of process to point.
+Return before the end of the process' output copies the sexp ending at point
+    to the end of the process' output, and sends it.
+Delete converts tabs to spaces as it moves back.
+Tab indents for ruby; with argument, shifts rest
+    of expression rigidly with the current line.
+C-M-q does Tab on each line starting within following expression.
+Paragraphs are separated only by blank lines.  # start comments.
+If you accidentally suspend your process, use \\[comint-continue-subjob]
+to continue it."
+  (interactive)
+  (comint-mode)
+  ;; Customise in inferior-ruby-mode-hook
+  ;(setq comint-prompt-regexp "^[^>\n]*>+ *")
+  (setq comint-prompt-regexp inferior-ruby-prompt-pattern)
+  ;;(scheme-mode-variables)
+  (ruby-mode-variables)
+  (setq major-mode 'inferior-ruby-mode)
+  (setq mode-name "Inferior Ruby")
+  (setq mode-line-process '(":%s"))
+  (use-local-map inferior-ruby-mode-map)
+  (setq comint-input-filter (function ruby-input-filter))
+  (setq comint-get-old-input (function ruby-get-old-input))
+  (compilation-minor-mode)
+  (compilation-build-compilation-error-regexp-alist)
+  (run-hooks 'inferior-ruby-mode-hook))
+
+(defvar inferior-ruby-filter-regexp "\\`\\s *\\S ?\\S ?\\s *\\'"
+  "*Input matching this regexp are not saved on the history list.
+Defaults to a regexp ignoring all inputs of 0, 1, or 2 letters.")
+
+(defun ruby-input-filter (str)
+  "Don't save anything matching inferior-ruby-filter-regexp"
+  (not (string-match inferior-ruby-filter-regexp str)))
+
+;; adapted from replace-in-string in XEmacs (subr.el)
+(defun remove-in-string (str regexp)
+  "Remove all matches in STR for REGEXP and returns the new string."
+  (let ((rtn-str "") (start 0) match prev-start)
+    (while (setq match (string-match regexp str start))
+      (setq prev-start start
+	    start (match-end 0)
+	    rtn-str (concat rtn-str (substring str prev-start match))))
+    (concat rtn-str (substring str start))))
+
+(defun ruby-get-old-input ()
+  "Snarf the sexp ending at point"
+  (save-excursion
+    (let ((end (point)))
+      (re-search-backward inferior-ruby-first-prompt-pattern)
+      (remove-in-string (buffer-substring (point) end)
+			inferior-ruby-prompt-pattern)
+      )))
+
+(defun ruby-args-to-list (string)
+  (let ((where (string-match "[ \t]" string)))
+    (cond ((null where) (list string))
+	  ((not (= where 0))
+	   (cons (substring string 0 where)
+		 (ruby-args-to-list (substring string (+ 1 where)
+						 (length string)))))
+	  (t (let ((pos (string-match "[^ \t]" string)))
+	       (if (null pos)
+		   nil
+		 (ruby-args-to-list (substring string pos
+						 (length string)))))))))
+
+(defun run-ruby (cmd)
+  "Run an inferior Ruby process, input and output via buffer *ruby*.
+If there is a process already running in `*ruby*', switch to that buffer.
+With argument, allows you to edit the command line (default is value
+of `ruby-program-name').  Runs the hooks `inferior-ruby-mode-hook'
+\(after the `comint-mode-hook' is run).
+\(Type \\[describe-mode] in the process buffer for a list of commands.)"
+
+  (interactive (list (if current-prefix-arg
+			 (read-string "Run Ruby: " ruby-program-name)
+			 ruby-program-name)))
+  (if (not (comint-check-proc "*ruby*"))
+      (let ((cmdlist (ruby-args-to-list cmd)))
+	(set-buffer (apply 'make-comint "ruby" (car cmdlist)
+			   nil (cdr cmdlist)))
+	(inferior-ruby-mode)))
+  (setq ruby-program-name cmd)
+  (setq ruby-buffer "*ruby*")
+  (pop-to-buffer "*ruby*"))
+
+(defconst ruby-send-terminator "--inf-ruby-%x-%d-%d-%d--"
+  "Template for irb here document terminator.
+Must not contain ruby meta characters.")
+
+(defun ruby-send-region (start end)
+  "Send the current region to the inferior Ruby process."
+  (interactive "r")
+  (let (term (file (buffer-file-name)) line)
+    (save-excursion
+      (goto-char start)
+      (setq line (line-number))
+      (while (progn
+	       (setq term (apply 'format ruby-send-terminator (random) (current-time)))
+	       (re-search-forward (concat "^" (regexp-quote term) "$") end t))))
+    (comint-send-string (ruby-proc) (format "eval <<'%s', nil, %S, %d\n" term file line))
+    (comint-send-region (ruby-proc) start end)
+    (comint-send-string (ruby-proc) (concat "\n" term "\n"))))
+
+(defun ruby-send-definition ()
+  "Send the current definition to the inferior Ruby process."
+  (interactive)
+  (save-excursion
+    (ruby-end-of-defun)
+    (let ((end (point)))
+      (ruby-beginning-of-defun)
+      (ruby-send-region (point) end))))
+
+;(defun ruby-send-last-sexp ()
+;  "Send the previous sexp to the inferior Ruby process."
+;  (interactive)
+;  (ruby-send-region (save-excursion (backward-sexp) (point)) (point)))
+
+(defun ruby-send-block ()
+  "Send the current block to the inferior Ruby process."
+  (interactive)
+  (save-excursion
+    (ruby-end-of-block)
+    (end-of-line)
+    (let ((end (point)))
+      (ruby-beginning-of-block)
+      (ruby-send-region (point) end))))
+
+(defun switch-to-ruby (eob-p)
+  "Switch to the ruby process buffer.
+With argument, positions cursor at end of buffer."
+  (interactive "P")
+  (if (get-buffer ruby-buffer)
+      (pop-to-buffer ruby-buffer)
+      (error "No current process buffer. See variable ruby-buffer."))
+  (cond (eob-p
+	 (push-mark)
+	 (goto-char (point-max)))))
+
+(defun ruby-send-region-and-go (start end)
+  "Send the current region to the inferior Ruby process.
+Then switch to the process buffer."
+  (interactive "r")
+  (ruby-send-region start end)
+  (switch-to-ruby t))
+
+(defun ruby-send-definition-and-go ()
+  "Send the current definition to the inferior Ruby. 
+Then switch to the process buffer."
+  (interactive)
+  (ruby-send-definition)
+  (switch-to-ruby t))
+
+(defun ruby-send-block-and-go ()
+  "Send the current block to the inferior Ruby. 
+Then switch to the process buffer."
+  (interactive)
+  (ruby-send-block)
+  (switch-to-ruby t))
+
+(defvar ruby-source-modes '(ruby-mode)
+  "*Used to determine if a buffer contains Ruby source code.
+If it's loaded into a buffer that is in one of these major modes, it's
+considered a ruby source file by ruby-load-file.
+Used by these commands to determine defaults.")
+
+(defvar ruby-prev-l/c-dir/file nil
+  "Caches the last (directory . file) pair.
+Caches the last pair used in the last ruby-load-file command.
+Used for determining the default in the 
+next one.")
+
+(defun ruby-load-file (file-name)
+  "Load a Ruby file into the inferior Ruby process."
+  (interactive (comint-get-source "Load Ruby file: " ruby-prev-l/c-dir/file
+				  ruby-source-modes t)) ; T because LOAD 
+                                                          ; needs an exact name
+  (comint-check-source file-name) ; Check to see if buffer needs saved.
+  (setq ruby-prev-l/c-dir/file (cons (file-name-directory    file-name)
+				       (file-name-nondirectory file-name)))
+  (comint-send-string (ruby-proc) (concat "(load \""
+					    file-name
+					    "\"\)\n")))
+
+(defun ruby-proc ()
+  "Returns the current ruby process. See variable ruby-buffer."
+  (let ((proc (get-buffer-process (if (eq major-mode 'inferior-ruby-mode)
+				      (current-buffer)
+				    ruby-buffer))))
+    (or proc
+	(error "No current process. See variable ruby-buffer"))))
+
+;;; Do the user's customisation...
+
+(defvar inf-ruby-load-hook nil
+  "This hook is run when inf-ruby is loaded in.
+This is a good place to put keybindings.")
+	
+(run-hooks 'inf-ruby-load-hook)
+
+(provide 'inf-ruby)
+
+;;; inf-ruby.el ends here
+(ruby-modes
+  (standards-version 1.1
+   version VERSION
+   author-version AUTHOR_VERSION
+   date DATE
+   build-date BUILD_DATE
+   maintainer MAINTAINER
+   distribution xemacs
+   priority low
+   category CATEGORY
+   dump nil
+   description "Ruby support."
+   filename FILENAME
+   md5sum MD5SUM
+   size SIZE
+   provides (inf-ruby ruby-mode)
+   requires (REQUIRES)
+   type regular
+))
+;;;
+;;;  ruby-mode.el -
+;;;
+;;;  $Author$
+;;;  $Date$
+;;;  created at: Fri Feb  4 14:49:13 JST 1994
+;;;
+
+(defconst ruby-mode-revision "$Revision$")
+
+(defconst ruby-mode-version
+  (progn
+   (string-match "[0-9.]+" ruby-mode-revision)
+   (substring ruby-mode-revision (match-beginning 0) (match-end 0))))
+
+(defgroup ruby nil
+  "Major mode for editing ruby scripts."
+  :group 'languages
+  :prefix "ruby-")
+
+(defcustom ruby-indent-level 2
+  "*Indentation of ruby statements."
+  :type 'integer
+  :group 'ruby)
+
+(defconst ruby-block-beg-re
+  "class\\|module\\|def\\|if\\|unless\\|case\\|while\\|until\\|for\\|begin\\|do"
+  )
+
+(defconst ruby-non-block-do-re
+  "\\(while\\|until\\|for\\|rescue\\)\\>"
+  )
+
+(defconst ruby-indent-beg-re
+  "\\(\\s *\\(class\\|module\\|def\\)\\)\\|if\\|unless\\|case\\|while\\|until\\|for\\|begin"
+    )
+
+(defconst ruby-modifier-beg-re
+  "if\\|unless\\|while\\|until"
+  )
+
+(defconst ruby-modifier-re
+  (concat ruby-modifier-beg-re "\\|rescue")
+  )
+
+(defconst ruby-block-mid-re
+  "then\\|else\\|elsif\\|when\\|rescue\\|ensure"
+  )
+
+(defconst ruby-block-op-re
+  "and\\|or\\|not"
+  )
+
+(defconst ruby-block-hanging-re
+  (concat ruby-modifier-beg-re "\\|" ruby-block-op-re)
+  )
+
+(defconst ruby-block-end-re "end")
+
+(defconst ruby-delimiter
+  (concat "[?$/%(){}#\"'`.:]\\|\\[\\|\\]\\|\\<\\("
+	  ruby-block-beg-re
+	  "\\|" ruby-block-end-re
+	  "\\)\\>\\|^=begin")
+  )
+
+(defconst ruby-negative
+  (concat "^[ \t]*\\(\\(" ruby-block-mid-re "\\)\\>\\|\\("
+	    ruby-block-end-re "\\)\\>\\|}\\|\\]\\)")
+  )
+
+(defconst ruby-operator-chars "-,.+*/%&|^~=<>:")
+(defconst ruby-operator-re (concat "[" ruby-operator-chars "]"))
+
+(defconst ruby-symbol-chars "a-zA-Z0-9_")
+(defconst ruby-symbol-re (concat "[" ruby-symbol-chars "]"))
+
+(defvar ruby-mode-abbrev-table nil
+  "Abbrev table in use in `ruby-mode' buffers.")
+
+(define-abbrev-table 'ruby-mode-abbrev-table ())
+
+(defvar ruby-mode-map nil "Keymap used in `ruby-mode'.")
+
+(if ruby-mode-map
+    nil
+  (setq ruby-mode-map (make-sparse-keymap))
+  (define-key ruby-mode-map "{" 'ruby-electric-brace)
+  (define-key ruby-mode-map "}" 'ruby-electric-brace)
+  (define-key ruby-mode-map "\e\C-a" 'ruby-beginning-of-defun)
+  (define-key ruby-mode-map "\e\C-e" 'ruby-end-of-defun)
+  (define-key ruby-mode-map "\e\C-b" 'ruby-beginning-of-block)
+  (define-key ruby-mode-map "\e\C-f" 'ruby-end-of-block)
+  (define-key ruby-mode-map "\e\C-p" 'ruby-beginning-of-block)
+  (define-key ruby-mode-map "\e\C-n" 'ruby-end-of-block)
+  (define-key ruby-mode-map "\e\C-h" 'ruby-mark-defun)
+  (define-key ruby-mode-map "\t" 'ruby-indent-command)
+  (define-key ruby-mode-map "\C-c\C-e" 'ruby-insert-end)
+  (define-key ruby-mode-map "\C-j" 'ruby-reindent-then-newline-and-indent)
+  (define-key ruby-mode-map "\C-m" 'newline))
+
+(defvar ruby-mode-syntax-table nil
+  "Syntax table in use in `ruby-mode' buffers.")
+
+(if ruby-mode-syntax-table
+    ()
+  (setq ruby-mode-syntax-table (make-syntax-table))
+  (modify-syntax-entry ?\' "\"" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\" "\"" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\` "\"" ruby-mode-syntax-table)
+  (modify-syntax-entry ?# "<" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\n ">" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\\ "\\" ruby-mode-syntax-table)
+  (modify-syntax-entry ?$ "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?? "_" ruby-mode-syntax-table)
+  (modify-syntax-entry ?_ "_" ruby-mode-syntax-table)
+  (modify-syntax-entry ?< "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?> "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?& "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?| "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?% "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?= "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?/ "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?+ "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?* "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?- "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?\; "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?\( "()" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\) ")(" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\{ "(}" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\} "){" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\[ "(]" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\] ")[" ruby-mode-syntax-table)
+  )
+
+(eval-when-compile (require 'cl))
+(defun ruby-imenu-create-index ()
+  (let ((index-alist '())
+	class-name class-begin method-name method-begin decl)
+    (goto-char (point-min))
+    (while (re-search-forward "^\\s *\\(class\\|def\\)\\s *\\([^(\n ]+\\)" nil t)
+      (setq decl (buffer-substring (match-beginning 1) (match-end 1)))
+      (cond
+       ((string= "class" decl)
+	(setq class-begin (match-beginning 2))
+	(setq class-name (buffer-substring class-begin (match-end 2)))
+	(push (cons class-name (match-beginning 0)) index-alist)
+	(ruby-mark-defun)
+	(save-restriction
+	  (narrow-to-region (region-beginning) (region-end))
+         (while (re-search-forward "^\\s *def\\s *\\([^(\n ]+\\)" nil 'move)
+	    (setq method-begin (match-beginning 1))
+	    (setq method-name (buffer-substring method-begin (match-end 1)))
+	    (push (cons (concat class-name "#" method-name) (match-beginning 0)) index-alist))))
+       ((string= "def" decl)
+	(setq method-begin (match-beginning 2))
+	(setq method-name (buffer-substring method-begin (match-end 2)))
+	(push (cons method-name (match-beginning 0)) index-alist))))
+    index-alist))
+
+(defun ruby-mode-variables ()
+  (set-syntax-table ruby-mode-syntax-table)
+  (setq local-abbrev-table ruby-mode-abbrev-table)
+  (make-local-variable 'indent-line-function)
+  (setq indent-line-function 'ruby-indent-line)
+  (make-local-variable 'require-final-newline)
+  (setq require-final-newline t)
+  (make-variable-buffer-local 'comment-start)
+  (setq comment-start "# ")
+  (make-variable-buffer-local 'comment-end)
+  (setq comment-end "")
+  (make-variable-buffer-local 'comment-column)
+  (setq comment-column 32)
+  (make-variable-buffer-local 'comment-start-skip)
+  (setq comment-start-skip "\\(^\\|\\s-\\);?#+ *")
+  (make-local-variable 'parse-sexp-ignore-comments)
+  (setq parse-sexp-ignore-comments t)
+  (make-local-variable 'paragraph-start)
+  (setq paragraph-start (concat "$\\|" page-delimiter))
+  (make-local-variable 'paragraph-separate)
+  (setq paragraph-separate paragraph-start)
+  (make-local-variable 'paragraph-ignore-fill-prefix)
+  (setq paragraph-ignore-fill-prefix t))
+
+;;;###autoload
+(defun ruby-mode ()
+  "Major mode for editing ruby scripts.
+\\[ruby-indent-command] properly indents subexpressions of multi-line
+class, module, def, if, while, for, do, and case statements, taking
+nesting into account.
+
+The variable `ruby-indent-level' controls the amount of indentation.
+\\{ruby-mode-map}"
+  (interactive)
+  (kill-all-local-variables)
+  (use-local-map ruby-mode-map)
+  (setq mode-name "Ruby")
+  (setq major-mode 'ruby-mode)
+  (ruby-mode-variables)
+
+  (make-local-variable 'imenu-create-index-function)
+  (setq imenu-create-index-function 'ruby-imenu-create-index)
+
+  (run-hooks 'ruby-mode-hook))
+
+(defun ruby-current-indentation ()
+  (save-excursion
+    (beginning-of-line)
+    (back-to-indentation)
+    (current-column)))
+
+(defun ruby-indent-line (&optional flag)
+  "Correct indentation of the current ruby line."
+  (ruby-indent-to (ruby-calculate-indent)))
+
+(defun ruby-indent-command ()
+  (interactive)
+  (ruby-indent-line t))
+
+(defun ruby-indent-to (x)
+  (if x
+      (let (shift top beg)
+	(and (< x 0) (error "invalid nest"))
+	(setq shift (current-column))
+	(beginning-of-line)
+	(setq beg (point))
+	(back-to-indentation)
+	(setq top (current-column))
+	(skip-chars-backward " \t")
+	(if (>= shift top) (setq shift (- shift top))
+	  (setq shift 0))
+	(if (and (bolp)
+		 (= x top))
+	    (move-to-column (+ x shift))
+	  (move-to-column top)
+	  (delete-region beg (point))
+	  (beginning-of-line)
+	  (indent-to x)
+	  (move-to-column (+ x shift))))))
+
+(defun ruby-expr-beg (&optional option)
+  (save-excursion
+    (store-match-data nil)
+    (skip-chars-backward " \t")
+    (cond
+     ((bolp) t)
+     ((looking-at "\\?")
+      (or (bolp) (forward-char -1))
+      (not (looking-at "\\sw")))
+     (t
+      (forward-char -1)
+      (or (looking-at ruby-operator-re)
+	  (looking-at "[\\[({,;]")
+	  (and (not (eq option 'modifier))
+	       (looking-at "[!?]"))
+	  (and (looking-at ruby-symbol-re)
+	       (skip-chars-backward ruby-symbol-chars)
+	       (cond
+		((or (looking-at ruby-block-beg-re)
+		     (looking-at ruby-block-op-re)
+		     (looking-at ruby-block-mid-re))
+		 (goto-char (match-end 0))
+		 (looking-at "\\>"))
+		(t
+		 (and (not (eq option 'expr-arg))
+		      (looking-at "[a-zA-Z][a-zA-z0-9_]* +/[^ \t]"))))))))))
+
+(defun ruby-forward-string (term &optional end no-error expand)
+  (let ((n 1) (c (string-to-char term))
+	(re (if expand
+		(concat "[^\\]\\(\\\\\\\\\\)*\\([" term "]\\|\\(#{\\)\\)")
+	      (concat "[^\\]\\(\\\\\\\\\\)*[" term "]"))))
+    (while (and (re-search-forward re end no-error)
+		(if (match-beginning 3)
+		    (ruby-forward-string "}{" end no-error nil)
+		  (> (setq n (if (eq (char-before (point)) c)
+				     (1- n) (1+ n))) 0)))
+      (forward-char -1))
+    (cond ((zerop n))
+	  (no-error nil)
+	  (error "unterminated string"))))
+
+(defun ruby-parse-region (start end)
+  (let ((indent-point end)
+	  (indent 0)
+	  (in-string nil)
+	  (in-paren nil)
+	  (depth 0)
+	  (nest nil)
+	  (pcol nil))
+    (save-excursion
+	(if start
+	    (goto-char start)
+	  (ruby-beginning-of-indent))
+	(save-restriction
+	  (narrow-to-region (point) end)
+	  (while (and (> indent-point (point))
+		      (re-search-forward ruby-delimiter indent-point t))
+	    (or depth (setq depth 0))
+	    (let ((pnt (point)) w re expand)
+	      (goto-char (match-beginning 0))
+	      (cond
+	       ((or (looking-at "\"")	;skip string
+		    (looking-at "`"))
+		(cond
+		 ((and (not (eobp))
+		       (ruby-forward-string (buffer-substring (point) (1+ (point))) indent-point t t))
+		  nil)
+		 (t
+		  (setq in-string (point))
+		  (goto-char indent-point))))
+	       ((looking-at "'")
+		(cond
+		 ((and (not (eobp))
+		       (re-search-forward "[^\\]\\(\\\\\\\\\\)*'" indent-point t))
+		  nil)
+		 (t
+		  (setq in-string (point))
+		  (goto-char indent-point))))
+	       ((looking-at "/")
+		(cond
+		 ((and (not (eobp)) (ruby-expr-beg))
+		  (if (ruby-forward-string "/" indent-point t t)
+		      nil
+		    (setq in-string (point))
+		    (goto-char indent-point)))
+		 (t
+		  (goto-char pnt))))
+	       ((looking-at "%")
+		(cond
+		 ((and (not (eobp)) (ruby-expr-beg 'expr-arg)
+		       (not (looking-at "%="))
+		       (looking-at "%[Qqrxw]?\\(.\\)"))
+		  (goto-char (match-beginning 1))
+		  (setq expand (not (eq (char-before) ?q)))
+		  (setq w (buffer-substring (match-beginning 1)
+					    (match-end 1)))
+		  (cond
+		   ((string= w "[") (setq re "]["))
+		   ((string= w "{") (setq re "}{"))
+		   ((string= w "(") (setq re ")("))
+		   ((string= w "<") (setq re "><"))
+		   ((or (and expand (string= w "\\"))
+			(member w '("*" "." "+" "?" "^" "$")))
+		    (setq w (concat "\\" w))))
+		  (unless (cond (re (ruby-forward-string re indent-point t expand))
+				(expand (ruby-forward-string w indent-point t t))
+				(t (re-search-forward
+				    (if (string= w "\\")
+					"\\\\[^\\]*\\\\"
+				      (concat "[^\\]\\(\\\\\\\\\\)*" w))
+				    indent-point t)))
+		    (setq in-string (point))
+		    (goto-char indent-point)))
+		 (t
+		  (goto-char pnt))))
+	       ((looking-at "\\?")	;skip ?char
+		(cond
+		 ((ruby-expr-beg)
+		  (looking-at "?\\(\\\\C-\\|\\\\M-\\)*.")
+		  (goto-char (match-end 0)))
+		 (t
+		  (goto-char pnt))))
+	       ((looking-at "\\$")	;skip $char
+		(goto-char pnt)
+		(forward-char 1))
+	       ((looking-at "#")	;skip comment
+		(forward-line 1)
+		(goto-char (point))
+		)
+	       ((looking-at "(")
+		(setq nest (cons (cons (char-after (point)) pnt) nest))
+		(setq pcol (cons (cons pnt depth) pcol))
+		(setq depth 0)
+		(goto-char pnt)
+		)
+	       ((looking-at "[\\[{]")
+		(setq nest (cons (cons (char-after (point)) pnt) nest))
+		(setq depth (1+ depth))
+		(goto-char pnt)
+		)
+	       ((looking-at ")")
+		(setq nest (cdr nest))
+		(setq depth (cdr (car pcol)))
+		(setq pcol (cdr pcol))
+		(goto-char pnt))
+	       ((looking-at "[])}]")
+		(setq nest (cdr nest))
+		(setq depth (1- depth))
+		(goto-char pnt))
+	       ((looking-at ruby-block-end-re)
+		(if (or (and (not (bolp))
+			     (progn
+			       (forward-char -1)
+			       (setq w (char-after (point)))
+			       (or (eq ?_ w)
+				   (eq ?. w))))
+			(progn
+			  (goto-char pnt)
+			  (setq w (char-after (point)))
+			  (or (eq ?_ w)
+			      (eq ?! w)
+			      (eq ?? w))))
+		    nil
+		  (setq nest (cdr nest))
+		  (setq depth (1- depth)))
+		(goto-char pnt))
+	       ((looking-at "def\\s +[^(\n;]*")
+		(if (or (bolp)
+			(progn
+			  (forward-char -1)
+			  (not (eq ?_ (char-after (point))))))
+		    (progn
+		      (setq nest (cons (cons nil pnt) nest))
+		      (setq depth (1+ depth))))
+		(goto-char (match-end 0)))
+	       ((looking-at ruby-block-beg-re)
+		(and
+		 (save-match-data
+                   (or (not (looking-at "do\\>[^_]"))
+                       (save-excursion
+                         (back-to-indentation)
+			 (not (looking-at ruby-non-block-do-re)))))
+		 (or (bolp)
+		     (progn
+		       (forward-char -1)
+		       (setq w (char-after (point)))
+		       (not (or (eq ?_ w)
+				(eq ?. w)))))
+		 (goto-char pnt)
+		 (setq w (char-after (point)))
+		 (not (eq ?_ w))
+		 (not (eq ?! w))
+		 (not (eq ?? w))
+		 (skip-chars-forward " \t")
+		 (goto-char (match-beginning 0))
+		 (or (not (looking-at ruby-modifier-re))
+		     (ruby-expr-beg 'modifier))
+		 (goto-char pnt)
+		 (setq nest (cons (cons nil pnt) nest))
+		 (setq depth (1+ depth)))
+		(goto-char pnt))
+	       ((looking-at ":\\([a-zA-Z_][a-zA-Z_0-9]*\\)?")
+		(goto-char (match-end 0)))
+	       ((or (looking-at "\\.")
+		    (looking-at "\\.\\.\\.?")
+		    (looking-at "\\.[0-9]+")
+		    (looking-at "\\.[a-zA-Z_0-9]+"))
+		(goto-char (match-end 0)))
+	       ((looking-at "^=begin")
+		(if (re-search-forward "^=end" indent-point t)
+		    (forward-line 1)
+		  (setq in-string (match-end 0))
+		  (goto-char indent-point)))
+	       (t
+		(error (format "bad string %s"
+			       (buffer-substring (point) pnt)
+			       )))))))
+	(list in-string (car nest) depth (car (car pcol))))))
+
+(defun ruby-indent-size (pos nest)
+  (+ pos (* (if nest nest 1) ruby-indent-level)))
+
+(defun ruby-calculate-indent (&optional parse-start)
+  (save-excursion
+    (beginning-of-line)
+    (let ((indent-point (point))
+	    (case-fold-search nil)
+	    state bol eol
+	    (indent 0))
+	(if parse-start
+	    (goto-char parse-start)
+	  (ruby-beginning-of-indent)
+	  (setq parse-start (point)))
+	(back-to-indentation)
+	(setq indent (current-column))
+	(setq state (ruby-parse-region parse-start indent-point))
+	(cond
+	 ((nth 0 state)			; within string
+	  (setq indent nil))		;  do nothing
+	 ((car (nth 1 state))		; in paren
+	  (goto-char (cdr (nth 1 state)))
+	  (if (eq (car (nth 1 state)) ?\( )
+	      (let ((column (current-column))
+		    (s (ruby-parse-region (point) indent-point)))
+		(cond
+		 ((and (nth 2 s) (> (nth 2 s) 0))
+		  (goto-char (cdr (nth 1 s)))
+		  (forward-word -1)
+		  (setq indent (ruby-indent-size (current-column) (nth 2 state))))
+		 (t
+		  (setq indent (current-column)))))
+	    (cond
+	     ((nth 3 state)
+	      (goto-char (nth 3 state))
+	      (setq indent (ruby-indent-size (current-column) (nth 2 state))))
+	     (t
+	      (goto-char parse-start)
+	      (back-to-indentation)
+	      (setq indent (ruby-indent-size (current-column) (nth 2 state)))))
+	    ))
+	 ((and (nth 2 state)(> (nth 2 state) 0)) ; in nest
+	  (if (null (cdr (nth 1 state)))
+	      (error "invalid nest"))
+	  (goto-char (cdr (nth 1 state)))
+	  (forward-word -1)		; skip back a keyword
+	  (cond
+	   ((looking-at "do\\>[^_]")	; iter block is a special case
+	    (cond
+	     ((nth 3 state)
+	      (goto-char (nth 3 state))
+	      (setq indent (ruby-indent-size (current-column) (nth 2 state))))
+	     (t
+	      (goto-char parse-start)
+	      (back-to-indentation)
+	      (setq indent (ruby-indent-size (current-column) (nth 2 state))))))
+	   (t
+	    (setq indent (+ (current-column) ruby-indent-level)))))
+
+	 ((and (nth 2 state) (< (nth 2 state) 0)) ; in negative nest
+	  (setq indent (ruby-indent-size (current-column) (nth 2 state)))))
+
+	(cond
+	 (indent
+	  (goto-char indent-point)
+	  (end-of-line)
+	  (setq eol (point))
+	  (beginning-of-line)
+	  (cond
+	   ((re-search-forward ruby-negative eol t)
+	    (and (not (eq ?_ (char-after (match-end 0))))
+		 (setq indent (- indent ruby-indent-level))))
+	   ;;operator terminated lines
+	   ((and
+	     (save-excursion
+	       (beginning-of-line)
+	       (not (bobp)))
+	     (or (null (car (nth 1 state))) ;not in parens
+		 (and (eq (car (nth 1 state)) ?\{)
+		      (save-excursion	;except non-block braces
+			(goto-char (cdr (nth 1 state)))
+			(or (bobp) (forward-char -1))
+			(not (ruby-expr-beg))))))
+	    ;; goto beginning of non-empty no-comment line
+	    (let (end done)
+	      (while (not done)
+		(skip-chars-backward " \t\n")
+		(setq end (point))
+		(beginning-of-line)
+		(if (re-search-forward "^\\s *#" end t)
+		    (beginning-of-line)
+		  (setq done t))))
+	    (setq bol (point))
+	    (end-of-line)
+	    (skip-chars-backward " \t")
+	    (let ((pos (point)))
+	      (while (and (re-search-backward "#" bol t)
+			  (eq (char-before) ??))
+		(forward-char -1))
+	      (skip-chars-backward " \t")
+	      (and
+	       (setq state (ruby-parse-region parse-start (point)))
+	       (nth 0 state)
+	       (goto-char pos)))
+	    (or (bobp) (forward-char -1))
+	    (and
+	     (or (and (looking-at ruby-symbol-re)
+		      (skip-chars-backward ruby-symbol-chars)
+		      (looking-at ruby-block-hanging-re)
+		      (not (eq (point) (nth 3 state)))
+		      (save-excursion
+			(goto-char (match-end 0))
+			(not (looking-at "[a-z_]"))))
+		 (and (looking-at ruby-operator-re)
+		      (not (eq (char-after (1- (point))) ??))
+		      (not (eq (char-after (1- (point))) ?$))
+		      (or (not (eq ?/ (char-after (point))))
+			  (null (nth 0 (ruby-parse-region parse-start (point)))))
+		      (or (not (eq ?| (char-after (point))))
+			  (save-excursion
+			    (or (eolp) (forward-char -1))
+			    (cond
+			     ((search-backward "|" nil t)
+			      (skip-chars-backward " \t\n")
+			      (and (not (eolp))
+				   (progn
+				     (forward-char -1)
+				     (not (looking-at "{")))
+				   (progn
+				     (forward-word -1)
+				     (not (looking-at "do\\>[^_]")))))
+			     (t t))))))
+	     (setq indent (+ indent ruby-indent-level)))))))
+	indent)))
+
+(defun ruby-electric-brace (arg)
+  (interactive "P")
+  (self-insert-command (prefix-numeric-value arg))
+  (ruby-indent-line t))
+
+(defun ruby-beginning-of-defun (&optional arg)
+  "Move backward to next beginning-of-defun.
+With argument, do this that many times.
+Returns t unless search stops due to end of buffer."
+  (interactive "p")
+  (and (re-search-backward (concat "^\\(" ruby-block-beg-re "\\)\\b")
+			   nil 'move (or arg 1))
+       (progn (beginning-of-line) t)))
+
+(defun ruby-beginning-of-indent ()
+  (and (re-search-backward (concat "^\\(" ruby-indent-beg-re "\\)\\b")
+			   nil 'move)
+       (progn
+	 (beginning-of-line)
+	 t)))
+
+(defun ruby-end-of-defun (&optional arg)
+  "Move forward to next end of defun.
+An end of a defun is found by moving forward from the beginning of one."
+  (interactive "p")
+  (and (re-search-forward (concat "^\\(" ruby-block-end-re "\\)\\($\\|\\b[^_]\\)")
+			  nil 'move (or arg 1))
+       (progn (beginning-of-line) t))
+  (forward-line 1))
+
+(defun ruby-move-to-block (n)
+  (let (start pos done down)
+    (setq start (ruby-calculate-indent))
+    (if (eobp)
+	nil
+      (while (and (not (bobp)) (not (eobp)) (not done))
+	(forward-line n)
+	(cond
+	 ((looking-at "^$"))
+	 ((looking-at "^\\s *#"))
+	 (t
+	  (setq pos (current-indentation))
+	  (cond
+	   ((< start pos)
+	    (setq down t))
+	   ((and down (= pos start))
+	    (setq done t))
+	   ((> start pos)
+	    (setq done t)))))
+	(if done
+	    (progn
+	      (back-to-indentation)
+	      (if (looking-at ruby-block-mid-re)
+		  (setq done nil)))))))
+  (back-to-indentation))
+
+(defun ruby-beginning-of-block ()
+  "Move backward to next beginning-of-block."
+  (interactive)
+  (ruby-move-to-block -1))
+
+(defun ruby-end-of-block ()
+  "Move forward to next beginning-of-block."
+  (interactive)
+  (ruby-move-to-block 1))
+
+(defun ruby-reindent-then-newline-and-indent ()
+  (interactive "*")
+  (newline)
+  (save-excursion
+    (end-of-line 0)
+    (indent-according-to-mode)
+    (delete-region (point) (progn (skip-chars-backward " \t") (point))))
+  (indent-according-to-mode))
+
+(fset 'ruby-encomment-region (symbol-function 'comment-region))
+
+(defun ruby-decomment-region (beg end)
+  (interactive "r")
+  (save-excursion
+    (goto-char beg)
+    (while (re-search-forward "^\\([ \t]*\\)#" end t)
+      (replace-match "\\1" nil nil)
+      (save-excursion
+	(ruby-indent-line)))))
+
+(defun ruby-insert-end ()
+  (interactive)
+  (insert "end")
+  (ruby-indent-line t)
+  (end-of-line))
+
+(defun ruby-mark-defun ()
+  "Put mark at end of this Ruby function, point at beginning."
+  (interactive)
+  (push-mark (point))
+  (ruby-end-of-defun)
+  (push-mark (point) nil t)
+  (ruby-beginning-of-defun)
+  (re-search-backward "^\n" (- (point) 1) t))
+
+(cond
+ ((featurep 'font-lock)
+  (or (boundp 'font-lock-variable-name-face)
+      (setq font-lock-variable-name-face font-lock-type-face))
+
+  (setq ruby-font-lock-syntactic-keywords
+	'(
+	  ;; #{ }, #$hoge, #@foo are not comments
+	  ("\\(#\\)[{$@]" 1 (1 . nil))
+	  ;; the last $' in the string ,'...$' is not variable
+	  ;; the last ?' in the string ,'...?' is not ascii code
+	  ("\\(^\\|[[\\s <+(,=]\\)\\('\\)[^'\n\\\\]*\\(\\\\.[^'\n\\\\]*\\)*[?$]\\('\\)"
+	   (2 (7 . nil))
+	   (4 (7 . nil)))
+	  ;; the last $` in the string ,`...$` is not variable
+	  ;; the last ?` in the string ,`...?` is not ascii code
+	  ("\\(^\\|[[\\s <+(,=]\\)\\(`\\)[^`\n\\\\]*\\(\\\\.[^`\n\\\\]*\\)*[?$]\\(`\\)"
+	   (2 (7 . nil))
+	   (4 (7 . nil)))
+	  ;; the last $" in the string ,"...$" is not variable
+	  ;; the last ?" in the string ,"...?" is not ascii code
+	  ("\\(^\\|[[\\s <+(,=]\\)\\(\"\\)[^\"\n\\\\]*\\(\\\\.[^\"\n\\\\]*\\)*[?$]\\(\"\\)"
+	   (2 (7 . nil))
+	   (4 (7 . nil)))
+	  ;; $' $" $` .... are variables
+	  ;; ?' ?" ?` are ascii codes
+	  ("[?$][#\"'`]" 0 (1 . nil))
+	  ;; regexps
+	  ("\\(^\\|[=(,~?:;]\\|\\(^\\|\\s \\)\\(if\\|elsif\\|unless\\|while\\|until\\|when\\|and\\|or\\|&&\\|||\\)\\|g?sub!?\\|scan\\|split!?\\)\\s *\\(/\\)[^/\n\\\\]*\\(\\\\.[^/\n\\\\]*\\)*\\(/\\)"
+	   (4 (7 . ?/))
+	   (6 (7 . ?/)))
+	  ;; %Q!...!
+	  ("\\(^\\|[[\\s <+(,=]\\)%[xrqQ]?\\([^a-zA-Z0-9 \n]\\)[^\n\\\\]*\\(\\\\.[^\n\\\\]*\\)*\\(\\2\\)"
+	   (2 (7 . nil))
+	   (4 (7 . nil)))
+	  ("^\\(=\\)begin\\(\\s \\|$\\)" 1 (7 . nil))
+	  ("^\\(=\\)end\\(\\s \\|$\\)" 1 (7 . nil))))
+
+  (cond ((featurep 'xemacs)
+	 (put 'ruby-mode 'font-lock-defaults
+	      '((ruby-font-lock-keywords)
+		nil nil nil
+		beginning-of-line
+		(font-lock-syntactic-keywords
+		 . ruby-font-lock-syntactic-keywords))))
+	(t
+	 (add-hook 'ruby-mode-hook
+	    '(lambda ()
+	       (make-local-variable 'font-lock-defaults)
+	       (make-local-variable 'font-lock-keywords)
+	       (make-local-variable 'font-lock-syntactic-keywords)
+	       (setq font-lock-defaults '((ruby-font-lock-keywords) nil nil))
+	       (setq font-lock-keywords ruby-font-lock-keywords)
+	       (setq font-lock-syntactic-keywords ruby-font-lock-syntactic-keywords)))))
+
+  (defun ruby-font-lock-docs (limit)
+    (if (re-search-forward "^=begin\\(\\s \\|$\\)" limit t)
+	(let (beg)
+	  (beginning-of-line)
+	  (setq beg (point))
+	  (forward-line 1)
+	  (if (re-search-forward "^=end\\(\\s \\|$\\)" limit t)
+	      (progn
+		(set-match-data (list beg (point)))
+		t)))))
+
+  (defun ruby-font-lock-maybe-docs (limit)
+    (let (beg)
+      (save-excursion
+	(if (and (re-search-backward "^=\\(begin\\|end\\)\\(\\s \\|$\\)" nil t)
+		 (string= (match-string 1) "begin"))
+	    (progn
+	      (beginning-of-line)
+	      (setq beg (point)))))
+      (if (and beg (and (re-search-forward "^=\\(begin\\|end\\)\\(\\s \\|$\\)" nil t)
+			(string= (match-string 1) "end")))
+	  (progn
+	    (set-match-data (list beg (point)))
+	    t)
+	nil)))
+
+  (defvar ruby-font-lock-keywords
+    (list
+     (cons (concat
+	    "\\(^\\|[^_:.@$]\\|\\.\\.\\)\\b\\("
+	    (mapconcat
+	     'identity
+	     '("alias"
+	       "and"
+	       "begin"
+	       "break"
+	       "case"
+	       "catch"
+	       "class"
+	       "def"
+	       "do"
+	       "elsif"
+	       "else"
+	       "fail"
+	       "ensure"
+	       "for"
+	       "end"
+	       "if"
+	       "in"
+	       "module"
+	       "next"
+	       "not"
+	       "or"
+	       "raise"
+	       "redo"
+	       "rescue"
+	       "retry"
+	       "return"
+	       "then"
+	       "throw"
+	       "super"
+	       "unless"
+	       "undef"
+	       "until"
+	       "when"
+	       "while"
+	       "yield"
+	       )
+	     "\\|")
+	    "\\)\\>\\([^_]\\|$\\)")
+	   2)
+     ;; variables
+     '("\\(^\\|[^_:.@$]\\|\\.\\.\\)\\b\\(nil\\|self\\|true\\|false\\)\\b\\([^_]\\|$\\)"
+       2 font-lock-variable-name-face)
+     ;; variables
+     '("\\(\\$\\([^a-zA-Z0-9 \n]\\|[0-9]\\)\\)\\W"
+       1 font-lock-variable-name-face)
+     '("\\(\\$\\|@\\|@@\\)\\(\\w\\|_\\)+"
+       0 font-lock-variable-name-face)
+     ;; embedded document
+     '(ruby-font-lock-docs
+       0 font-lock-comment-face t)
+     '(ruby-font-lock-maybe-docs
+       0 font-lock-comment-face t)
+     ;; constants
+     '("\\(^\\|[^_]\\)\\b\\([A-Z]+\\(\\w\\|_\\)*\\)"
+       2 font-lock-type-face)
+     ;; functions
+     '("^\\s *def\\s +\\([^( ]+\\)"
+       1 font-lock-function-name-face)
+     ;; symbols
+     '("\\(^\\|[^:]\\)\\(:\\([-+~]@?\\|[/%&|^`]\\|\\*\\*?\\|<\\(<\\|=>?\\)?\\|>[>=]?\\|===?\\|=~\\|\\[\\]=?\\|\\(\\w\\|_\\)+\\([!?=]\\|\\b_*\\)\\|#{[^}\n\\\\]*\\(\\\\.[^}\n\\\\]*\\)*}\\)\\)"
+       2 font-lock-reference-face)
+     ;; expression expansion
+     '("#\\({[^}\n\\\\]*\\(\\\\.[^}\n\\\\]*\\)*}\\|\\(\\$\\|@\\|@@\\)\\(\\w\\|_\\)+\\)"
+       0 font-lock-variable-name-face t))
+    "Additional expressions to highlight in `ruby-mode'."))
+
+ ((featurep 'hilit19)
+  (hilit-set-mode-patterns
+   'ruby-mode
+   '(("[^$\\?]\\(\"[^\\\"]*\\(\\\\\\(.\\|\n\\)[^\\\"]*\\)*\"\\)" 1 string)
+     ("[^$\\?]\\('[^\\']*\\(\\\\\\(.\\|\n\\)[^\\']*\\)*'\\)" 1 string)
+     ("[^$\\?]\\(`[^\\`]*\\(\\\\\\(.\\|\n\\)[^\\`]*\\)*`\\)" 1 string)
+     ("^\\s *#.*$" nil comment)
+     ("[^$@?\\]\\(#[^$@{\n].*$\\)" 1 comment)
+     ("[^a-zA-Z_]\\(\\?\\(\\\\[CM]-\\)*.\\)" 1 string)
+     ("^\\s *\\(require\\|load\\).*$" nil include)
+     ("^\\s *\\(include\\|alias\\|undef\\).*$" nil decl)
+     ("^\\s *\\<\\(class\\|def\\|module\\)\\>" "[)\n;]" defun)
+     ("[^_]\\<\\(begin\\|case\\|else\\|elsif\\|end\\|ensure\\|for\\|if\\|unless\\|rescue\\|then\\|when\\|while\\|until\\|do\\|yield\\)\\>\\([^_]\\|$\\)" 1 defun)
+     ("[^_]\\<\\(and\\|break\\|next\\|raise\\|fail\\|in\\|not\\|or\\|redo\\|retry\\|return\\|super\\|yield\\|catch\\|throw\\|self\\|nil\\)\\>\\([^_]\\|$\\)" 1 keyword)
+     ("\\$\\(.\\|\\sw+\\)" nil type)
+     ("[$@].[a-zA-Z_0-9]*" nil struct)
+     ("^__END__" nil label))))
+ )
+
+;;;###autoload
+(add-to-list 'auto-mode-alist '("\\.rb$" . ruby-mode))
+
+(provide 'ruby-mode)
+
+;;; ruby-mode.el ends here

ruby-mode.el.upstream

+;;;
+;;;  ruby-mode.el -
+;;;
+;;;  $Author$
+;;;  $Date$
+;;;  created at: Fri Feb  4 14:49:13 JST 1994
+;;;
+
+(defconst ruby-mode-revision "$Revision$")
+
+(defconst ruby-mode-version
+  (progn
+   (string-match "[0-9.]+" ruby-mode-revision)
+   (substring ruby-mode-revision (match-beginning 0) (match-end 0))))
+
+(defconst ruby-block-beg-re
+  "class\\|module\\|def\\|if\\|unless\\|case\\|while\\|until\\|for\\|begin\\|do"
+  )
+
+(defconst ruby-non-block-do-re
+  "\\(while\\|until\\|for\\|rescue\\)\\>"
+  )
+
+(defconst ruby-indent-beg-re
+  "\\(\\s *\\(class\\|module\\|def\\)\\)\\|if\\|unless\\|case\\|while\\|until\\|for\\|begin"
+    )
+
+(defconst ruby-modifier-beg-re
+  "if\\|unless\\|while\\|until"
+  )
+
+(defconst ruby-modifier-re
+  (concat ruby-modifier-beg-re "\\|rescue")
+  )
+
+(defconst ruby-block-mid-re
+  "then\\|else\\|elsif\\|when\\|rescue\\|ensure"
+  )
+
+(defconst ruby-block-op-re
+  "and\\|or\\|not"
+  )
+
+(defconst ruby-block-hanging-re
+  (concat ruby-modifier-beg-re "\\|" ruby-block-op-re)
+  )
+
+(defconst ruby-block-end-re "end")
+
+(defconst ruby-delimiter
+  (concat "[?$/%(){}#\"'`.:]\\|\\[\\|\\]\\|\\<\\("
+	  ruby-block-beg-re
+	  "\\|" ruby-block-end-re
+	  "\\)\\>\\|^=begin")
+  )
+
+(defconst ruby-negative
+  (concat "^[ \t]*\\(\\(" ruby-block-mid-re "\\)\\>\\|\\("
+	    ruby-block-end-re "\\)\\>\\|}\\|\\]\\)")
+  )
+
+(defconst ruby-operator-chars "-,.+*/%&|^~=<>:")
+(defconst ruby-operator-re (concat "[" ruby-operator-chars "]"))
+
+(defconst ruby-symbol-chars "a-zA-Z0-9_")
+(defconst ruby-symbol-re (concat "[" ruby-symbol-chars "]"))
+
+(defvar ruby-mode-abbrev-table nil
+  "Abbrev table in use in ruby-mode buffers.")
+
+(define-abbrev-table 'ruby-mode-abbrev-table ())
+
+(defvar ruby-mode-map nil "Keymap used in ruby mode.")
+
+(if ruby-mode-map
+    nil
+  (setq ruby-mode-map (make-sparse-keymap))
+  (define-key ruby-mode-map "{" 'ruby-electric-brace)
+  (define-key ruby-mode-map "}" 'ruby-electric-brace)
+  (define-key ruby-mode-map "\e\C-a" 'ruby-beginning-of-defun)
+  (define-key ruby-mode-map "\e\C-e" 'ruby-end-of-defun)
+  (define-key ruby-mode-map "\e\C-b" 'ruby-beginning-of-block)
+  (define-key ruby-mode-map "\e\C-f" 'ruby-end-of-block)
+  (define-key ruby-mode-map "\e\C-p" 'ruby-beginning-of-block)
+  (define-key ruby-mode-map "\e\C-n" 'ruby-end-of-block)
+  (define-key ruby-mode-map "\e\C-h" 'ruby-mark-defun)
+  (define-key ruby-mode-map "\t" 'ruby-indent-command)
+  (define-key ruby-mode-map "\C-c\C-e" 'ruby-insert-end)
+  (define-key ruby-mode-map "\C-j" 'ruby-reindent-then-newline-and-indent)
+  (define-key ruby-mode-map "\C-m" 'newline))
+
+(defvar ruby-mode-syntax-table nil
+  "Syntax table in use in ruby-mode buffers.")
+
+(if ruby-mode-syntax-table
+    ()
+  (setq ruby-mode-syntax-table (make-syntax-table))
+  (modify-syntax-entry ?\' "\"" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\" "\"" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\` "\"" ruby-mode-syntax-table)
+  (modify-syntax-entry ?# "<" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\n ">" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\\ "\\" ruby-mode-syntax-table)
+  (modify-syntax-entry ?$ "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?? "_" ruby-mode-syntax-table)
+  (modify-syntax-entry ?_ "_" ruby-mode-syntax-table)
+  (modify-syntax-entry ?< "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?> "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?& "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?| "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?% "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?= "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?/ "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?+ "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?* "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?- "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?\; "." ruby-mode-syntax-table)
+  (modify-syntax-entry ?\( "()" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\) ")(" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\{ "(}" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\} "){" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\[ "(]" ruby-mode-syntax-table)
+  (modify-syntax-entry ?\] ")[" ruby-mode-syntax-table)
+  )
+
+(defvar ruby-indent-level 2
+  "*Indentation of ruby statements.")
+
+(eval-when-compile (require 'cl))
+(defun ruby-imenu-create-index ()
+  (let ((index-alist '())
+	class-name class-begin method-name method-begin decl)
+    (goto-char (point-min))
+    (while (re-search-forward "^\\s *\\(class\\|def\\)\\s *\\([^(\n ]+\\)" nil t)
+      (setq decl (buffer-substring (match-beginning 1) (match-end 1)))
+      (cond
+       ((string= "class" decl)
+	(setq class-begin (match-beginning 2))
+	(setq class-name (buffer-substring class-begin (match-end 2)))
+	(push (cons class-name (match-beginning 0)) index-alist)
+	(ruby-mark-defun)
+	(save-restriction
+	  (narrow-to-region (region-beginning) (region-end))
+         (while (re-search-forward "^\\s *def\\s *\\([^(\n ]+\\)" nil 'move)
+	    (setq method-begin (match-beginning 1))
+	    (setq method-name (buffer-substring method-begin (match-end 1)))
+	    (push (cons (concat class-name "#" method-name) (match-beginning 0)) index-alist))))
+       ((string= "def" decl)
+	(setq method-begin (match-beginning 2))
+	(setq method-name (buffer-substring method-begin (match-end 2)))
+	(push (cons method-name (match-beginning 0)) index-alist))))
+    index-alist))
+
+(defun ruby-mode-variables ()
+  (set-syntax-table ruby-mode-syntax-table)
+  (setq local-abbrev-table ruby-mode-abbrev-table)
+  (make-local-variable 'indent-line-function)
+  (setq indent-line-function 'ruby-indent-line)
+  (make-local-variable 'require-final-newline)
+  (setq require-final-newline t)
+  (make-variable-buffer-local 'comment-start)
+  (setq comment-start "# ")
+  (make-variable-buffer-local 'comment-end)
+  (setq comment-end "")
+  (make-variable-buffer-local 'comment-column)
+  (setq comment-column 32)
+  (make-variable-buffer-local 'comment-start-skip)
+  (setq comment-start-skip "\\(^\\|\\s-\\);?#+ *")
+  (make-local-variable 'parse-sexp-ignore-comments)
+  (setq parse-sexp-ignore-comments t)
+  (make-local-variable 'paragraph-start)
+  (setq paragraph-start (concat "$\\|" page-delimiter))
+  (make-local-variable 'paragraph-separate)
+  (setq paragraph-separate paragraph-start)
+  (make-local-variable 'paragraph-ignore-fill-prefix)
+  (setq paragraph-ignore-fill-prefix t))
+
+(defun ruby-mode ()
+  "Major mode for editing ruby scripts.
+\\[ruby-indent-command] properly indents subexpressions of multi-line
+class, module, def, if, while, for, do, and case statements, taking
+nesting into account.
+
+The variable ruby-indent-level controls the amount of indentation.
+\\{ruby-mode-map}"
+  (interactive)
+  (kill-all-local-variables)
+  (use-local-map ruby-mode-map)
+  (setq mode-name "Ruby")
+  (setq major-mode 'ruby-mode)
+  (ruby-mode-variables)
+
+  (make-local-variable 'imenu-create-index-function)
+  (setq imenu-create-index-function 'ruby-imenu-create-index)
+
+  (run-hooks 'ruby-mode-hook))
+
+(defun ruby-current-indentation ()
+  (save-excursion
+    (beginning-of-line)
+    (back-to-indentation)
+    (current-column)))
+
+(defun ruby-indent-line (&optional flag)
+  "Correct indentation of the current ruby line."
+  (ruby-indent-to (ruby-calculate-indent)))
+
+(defun ruby-indent-command ()
+  (interactive)
+  (ruby-indent-line t))
+
+(defun ruby-indent-to (x)
+  (if x
+      (let (shift top beg)
+	(and (< x 0) (error "invalid nest"))
+	(setq shift (current-column))
+	(beginning-of-line)
+	(setq beg (point))
+	(back-to-indentation)
+	(setq top (current-column))
+	(skip-chars-backward " \t")
+	(if (>= shift top) (setq shift (- shift top))
+	  (setq shift 0))
+	(if (and (bolp)
+		 (= x top))
+	    (move-to-column (+ x shift))
+	  (move-to-column top)
+	  (delete-region beg (point))
+	  (beginning-of-line)
+	  (indent-to x)
+	  (move-to-column (+ x shift))))))
+
+(defun ruby-expr-beg (&optional option)
+  (save-excursion
+    (store-match-data nil)
+    (skip-chars-backward " \t")
+    (cond
+     ((bolp) t)
+     ((looking-at "\\?")
+      (or (bolp) (forward-char -1))
+      (not (looking-at "\\sw")))
+     (t
+      (forward-char -1)
+      (or (looking-at ruby-operator-re)
+	  (looking-at "[\\[({,;]")
+	  (and (not (eq option 'modifier))
+	       (looking-at "[!?]"))
+	  (and (looking-at ruby-symbol-re)
+	       (skip-chars-backward ruby-symbol-chars)
+	       (cond
+		((or (looking-at ruby-block-beg-re)
+		     (looking-at ruby-block-op-re)
+		     (looking-at ruby-block-mid-re))
+		 (goto-char (match-end 0))
+		 (looking-at "\\>"))
+		(t
+		 (and (not (eq option 'expr-arg))
+		      (looking-at "[a-zA-Z][a-zA-z0-9_]* +/[^ \t]"))))))))))
+
+(defun ruby-forward-string (term &optional end no-error expand)
+  (let ((n 1) (c (string-to-char term))
+	(re (if expand
+		(concat "[^\\]\\(\\\\\\\\\\)*\\([" term "]\\|\\(#{\\)\\)")
+	      (concat "[^\\]\\(\\\\\\\\\\)*[" term "]"))))
+    (while (and (re-search-forward re end no-error)
+		(if (match-beginning 3)
+		    (ruby-forward-string "}{" end no-error nil)
+		  (> (setq n (if (eq (char-before (point)) c)
+				     (1- n) (1+ n))) 0)))
+      (forward-char -1))
+    (cond ((zerop n))
+	  (no-error nil)
+	  (error "unterminated string"))))
+
+(defun ruby-parse-region (start end)
+  (let ((indent-point end)
+	  (indent 0)
+	  (in-string nil)
+	  (in-paren nil)
+	  (depth 0)
+	  (nest nil)
+	  (pcol nil))
+    (save-excursion
+	(if start
+	    (goto-char start)
+	  (ruby-beginning-of-indent))
+	(save-restriction
+	  (narrow-to-region (point) end)
+	  (while (and (> indent-point (point))
+		      (re-search-forward ruby-delimiter indent-point t))
+	    (or depth (setq depth 0))
+	    (let ((pnt (point)) w re expand)
+	      (goto-char (match-beginning 0))
+	      (cond
+	       ((or (looking-at "\"")	;skip string
+		    (looking-at "`"))
+		(cond
+		 ((and (not (eobp))
+		       (ruby-forward-string (buffer-substring (point) (1+ (point))) indent-point t t))
+		  nil)
+		 (t
+		  (setq in-string (point))
+		  (goto-char indent-point))))
+	       ((looking-at "'")
+		(cond
+		 ((and (not (eobp))
+		       (re-search-forward "[^\\]\\(\\\\\\\\\\)*'" indent-point t))
+		  nil)
+		 (t
+		  (setq in-string (point))
+		  (goto-char indent-point))))
+	       ((looking-at "/")
+		(cond
+		 ((and (not (eobp)) (ruby-expr-beg))
+		  (if (ruby-forward-string "/" indent-point t t)
+		      nil
+		    (setq in-string (point))
+		    (goto-char indent-point)))
+		 (t
+		  (goto-char pnt))))
+	       ((looking-at "%")
+		(cond
+		 ((and (not (eobp)) (ruby-expr-beg 'expr-arg)
+		       (not (looking-at "%="))
+		       (looking-at "%[Qqrxw]?\\(.\\)"))
+		  (goto-char (match-beginning 1))
+		  (setq expand (not (eq (char-before) ?q)))
+		  (setq w (buffer-substring (match-beginning 1)
+					    (match-end 1)))
+		  (cond
+		   ((string= w "[") (setq re "]["))
+		   ((string= w "{") (setq re "}{"))
+		   ((string= w "(") (setq re ")("))
+		   ((string= w "<") (setq re "><"))
+		   ((or (and expand (string= w "\\"))
+			(member w '("*" "." "+" "?" "^" "$")))
+		    (setq w (concat "\\" w))))
+		  (unless (cond (re (ruby-forward-string re indent-point t expand))
+				(expand (ruby-forward-string w indent-point t t))
+				(t (re-search-forward
+				    (if (string= w "\\")
+					"\\\\[^\\]*\\\\"
+				      (concat "[^\\]\\(\\\\\\\\\\)*" w))
+				    indent-point t)))
+		    (setq in-string (point))
+		    (goto-char indent-point)))
+		 (t
+		  (goto-char pnt))))
+	       ((looking-at "\\?")	;skip ?char
+		(cond
+		 ((ruby-expr-beg)
+		  (looking-at "?\\(\\\\C-\\|\\\\M-\\)*.")
+		  (goto-char (match-end 0)))
+		 (t
+		  (goto-char pnt))))
+	       ((looking-at "\\$")	;skip $char
+		(goto-char pnt)
+		(forward-char 1))
+	       ((looking-at "#")	;skip comment
+		(forward-line 1)
+		(goto-char (point))
+		)
+	       ((looking-at "(")
+		(setq nest (cons (cons (char-after (point)) pnt) nest))
+		(setq pcol (cons (cons pnt depth) pcol))
+		(setq depth 0)
+		(goto-char pnt)
+		)
+	       ((looking-at "[\\[{]")
+		(setq nest (cons (cons (char-after (point)) pnt) nest))
+		(setq depth (1+ depth))
+		(goto-char pnt)
+		)
+	       ((looking-at ")")
+		(setq nest (cdr nest))
+		(setq depth (cdr (car pcol)))
+		(setq pcol (cdr pcol))
+		(goto-char pnt))
+	       ((looking-at "[])}]")
+		(setq nest (cdr nest))
+		(setq depth (1- depth))
+		(goto-char pnt))
+	       ((looking-at ruby-block-end-re)
+		(if (or (and (not (bolp))
+			     (progn
+			       (forward-char -1)
+			       (setq w (char-after (point)))
+			       (or (eq ?_ w)
+				   (eq ?. w))))
+			(progn
+			  (goto-char pnt)
+			  (setq w (char-after (point)))
+			  (or (eq ?_ w)
+			      (eq ?! w)
+			      (eq ?? w))))
+		    nil
+		  (setq nest (cdr nest))
+		  (setq depth (1- depth)))
+		(goto-char pnt))
+	       ((looking-at "def\\s +[^(\n;]*")
+		(if (or (bolp)
+			(progn
+			  (forward-char -1)
+			  (not (eq ?_ (char-after (point))))))
+		    (progn
+		      (setq nest (cons (cons nil pnt) nest))
+		      (setq depth (1+ depth))))
+		(goto-char (match-end 0)))
+	       ((looking-at ruby-block-beg-re)
+		(and
+		 (save-match-data
+                   (or (not (looking-at "do\\>[^_]"))
+                       (save-excursion
+                         (back-to-indentation)
+			 (not (looking-at ruby-non-block-do-re)))))
+		 (or (bolp)
+		     (progn
+		       (forward-char -1)
+		       (setq w (char-after (point)))
+		       (not (or (eq ?_ w)
+				(eq ?. w)))))
+		 (goto-char pnt)
+		 (setq w (char-after (point)))
+		 (not (eq ?_ w))
+		 (not (eq ?! w))
+		 (not (eq ?? w))
+		 (skip-chars-forward " \t")
+		 (goto-char (match-beginning 0))
+		 (or (not (looking-at ruby-modifier-re))
+		     (ruby-expr-beg 'modifier))
+		 (goto-char pnt)
+		 (setq nest (cons (cons nil pnt) nest))
+		 (setq depth (1+ depth)))
+		(goto-char pnt))
+	       ((looking-at ":\\([a-zA-Z_][a-zA-Z_0-9]*\\)?")
+		(goto-char (match-end 0)))
+	       ((or (looking-at "\\.")
+		    (looking-at "\\.\\.\\.?")
+		    (looking-at "\\.[0-9]+")
+		    (looking-at "\\.[a-zA-Z_0-9]+"))
+		(goto-char (match-end 0)))
+	       ((looking-at "^=begin")
+		(if (re-search-forward "^=end" indent-point t)
+		    (forward-line 1)
+		  (setq in-string (match-end 0))
+		  (goto-char indent-point)))
+	       (t
+		(error (format "bad string %s"
+			       (buffer-substring (point) pnt)
+			       )))))))
+	(list in-string (car nest) depth (car (car pcol))))))
+
+(defun ruby-indent-size (pos nest)
+  (+ pos (* (if nest nest 1) ruby-indent-level)))
+
+(defun ruby-calculate-indent (&optional parse-start)
+  (save-excursion
+    (beginning-of-line)
+    (let ((indent-point (point))
+	    (case-fold-search nil)
+	    state bol eol
+	    (indent 0))
+	(if parse-start
+	    (goto-char parse-start)