diff --git a/Misc/README.Emacs b/Misc/README.Emacs
new file mode 100644
index 0000000..68bb1db
--- /dev/null
+++ b/Misc/README.Emacs
@@ -0,0 +1,32 @@
+=============
+Emacs support
+=============
+
+If you want to edit Python code in Emacs, you should download python-mode.el
+and install it somewhere on your load-path.  See the project page to download:
+
+    https://launchpad.net/python-mode
+
+While Emacs comes with a python.el file, it is not recommended.
+python-mode.el is maintained by core Python developers and is generally
+considered more Python programmer friendly.  For example, python-mode.el
+includes a killer feature called `pdbtrack` which allows you to set a pdb
+breakpoint in your code, run your program in an Emacs shell buffer, and do gud
+style debugging when the breakpoint is hit.
+
+python-mode.el is compatible with both GNU Emacs from the FSF, and XEmacs.
+
+For more information and bug reporting, see the above project page.  For help,
+development, or discussions, see the python-mode mailing list:
+
+    http://mail.python.org/mailman/listinfo/python-mode
+
+
+..
+   Local Variables:
+   mode: indented-text
+   indent-tabs-mode: nil
+   sentence-end-double-space: t
+   fill-column: 78
+   coding: utf-8
+   End:
diff --git a/Misc/python-mode.el b/Misc/python-mode.el
deleted file mode 100644
index 1ad818f..0000000
--- a/Misc/python-mode.el
+++ /dev/null
@@ -1,3916 +0,0 @@
-;;; python-mode.el --- Major mode for editing Python programs
-
-;; Copyright (C) 1992,1993,1994  Tim Peters
-
-;; Author: 2003-2007 http://sf.net/projects/python-mode
-;;         1995-2002 Barry A. Warsaw
-;;         1992-1994 Tim Peters
-;; Maintainer: python-mode@python.org
-;; Created:    Feb 1992
-;; Keywords:   python languages oop
-
-(defconst py-version "$Revision$"
-  "`python-mode' version number.")
-
-;; This software is provided as-is, without express or implied
-;; warranty.  Permission to use, copy, modify, distribute or sell this
-;; software, without fee, for any purpose and by any individual or
-;; organization, is hereby granted, provided that the above copyright
-;; notice and this paragraph appear in all copies.
-
-;;; Commentary:
-
-;; This is a major mode for editing Python programs.  It was developed by Tim
-;; Peters after an original idea by Michael A. Guravage.  Tim subsequently
-;; left the net and in 1995, Barry Warsaw inherited the mode.  Tim's now back
-;; but disavows all responsibility for the mode.  In fact, we suspect he
-;; doesn't even use Emacs any more.  In 2003, python-mode.el was moved to its
-;; own SourceForge project apart from the Python project, and now is
-;; maintained by the volunteers at the python-mode@python.org mailing list.
-
-;; pdbtrack support contributed by Ken Manheimer, April 2001.  Skip Montanaro
-;; has also contributed significantly to python-mode's development.
-
-;; Please use the SourceForge Python project to submit bugs or
-;; patches:
-;;
-;;     http://sourceforge.net/projects/python
-
-;; INSTALLATION:
-
-;; To install, just drop this file into a directory on your load-path and
-;; byte-compile it.  To set up Emacs to automatically edit files ending in
-;; ".py" using python-mode add the following to your ~/.emacs file (GNU
-;; Emacs) or ~/.xemacs/init.el file (XEmacs):
-;;    (setq auto-mode-alist (cons '("\\.py$" . python-mode) auto-mode-alist))
-;;    (setq interpreter-mode-alist (cons '("python" . python-mode)
-;;                                       interpreter-mode-alist))
-;;    (autoload 'python-mode "python-mode" "Python editing mode." t)
-;;
-;; In XEmacs syntax highlighting should be enabled automatically.  In GNU
-;; Emacs you may have to add these lines to your ~/.emacs file:
-;;    (global-font-lock-mode t)
-;;    (setq font-lock-maximum-decoration t)
-
-;; FOR MORE INFORMATION:
-
-;; There is some information on python-mode.el at
-
-;;     http://www.python.org/emacs/python-mode/
-;;
-;; It does contain links to other packages that you might find useful,
-;; such as pdb interfaces, OO-Browser links, etc.
-
-;; BUG REPORTING:
-
-;; As mentioned above, please use the SourceForge Python project for
-;; submitting bug reports or patches.  The old recommendation, to use
-;; C-c C-b will still work, but those reports have a higher chance of
-;; getting buried in my mailbox.  Please include a complete, but
-;; concise code sample and a recipe for reproducing the bug.  Send
-;; suggestions and other comments to python-mode@python.org.
-
-;; When in a Python mode buffer, do a C-h m for more help.  It's
-;; doubtful that a texinfo manual would be very useful, but if you
-;; want to contribute one, I'll certainly accept it!
-
-;;; Code:
-
-(require 'comint)
-(require 'custom)
-(require 'cl)
-(require 'compile)
-(require 'ansi-color)
-
-
-;; user definable variables
-;; vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
-
-(defgroup python nil
-  "Support for the Python programming language, <http://www.python.org/>"
-  :group 'languages
-  :prefix "py-")
-
-(defcustom py-tab-always-indent t
-  "*Non-nil means TAB in Python mode should always reindent the current line,
-regardless of where in the line point is when the TAB command is used."
-  :type 'boolean
-  :group 'python)
-
-(defcustom py-python-command "python"
-  "*Shell command used to start Python interpreter."
-  :type 'string
-  :group 'python)
-
-(make-obsolete-variable 'py-jpython-command 'py-jython-command)
-(defcustom py-jython-command "jython"
-  "*Shell command used to start the Jython interpreter."
-  :type 'string
-  :group 'python
-  :tag "Jython Command")
-
-(defcustom py-default-interpreter 'cpython
-  "*Which Python interpreter is used by default.
-The value for this variable can be either `cpython' or `jython'.
-
-When the value is `cpython', the variables `py-python-command' and
-`py-python-command-args' are consulted to determine the interpreter
-and arguments to use.
-
-When the value is `jython', the variables `py-jython-command' and
-`py-jython-command-args' are consulted to determine the interpreter
-and arguments to use.
-
-Note that this variable is consulted only the first time that a Python
-mode buffer is visited during an Emacs session.  After that, use
-\\[py-toggle-shells] to change the interpreter shell."
-  :type '(choice (const :tag "Python (a.k.a. CPython)" cpython)
-		 (const :tag "Jython" jython))
-  :group 'python)
-
-(defcustom py-python-command-args '("-i")
-  "*List of string arguments to be used when starting a Python shell."
-  :type '(repeat string)
-  :group 'python)
-
-(make-obsolete-variable 'py-jpython-command-args 'py-jython-command-args)
-(defcustom py-jython-command-args '("-i")
-  "*List of string arguments to be used when starting a Jython shell."
-  :type '(repeat string)
-  :group 'python
-  :tag "Jython Command Args")
-
-(defcustom py-indent-offset 4
-  "*Amount of offset per level of indentation.
-`\\[py-guess-indent-offset]' can usually guess a good value when
-you're editing someone else's Python code."
-  :type 'integer
-  :group 'python)
-
-(defcustom py-continuation-offset 4
-  "*Additional amount of offset to give for some continuation lines.
-Continuation lines are those that immediately follow a backslash
-terminated line.  Only those continuation lines for a block opening
-statement are given this extra offset."
-  :type 'integer
-  :group 'python)
-
-(defcustom py-smart-indentation t
-  "*Should `python-mode' try to automagically set some indentation variables?
-When this variable is non-nil, two things happen when a buffer is set
-to `python-mode':
-
-    1. `py-indent-offset' is guessed from existing code in the buffer.
-       Only guessed values between 2 and 8 are considered.  If a valid
-       guess can't be made (perhaps because you are visiting a new
-       file), then the value in `py-indent-offset' is used.
-
-    2. `indent-tabs-mode' is turned off if `py-indent-offset' does not
-       equal `tab-width' (`indent-tabs-mode' is never turned on by
-       Python mode).  This means that for newly written code, tabs are
-       only inserted in indentation if one tab is one indentation
-       level, otherwise only spaces are used.
-
-Note that both these settings occur *after* `python-mode-hook' is run,
-so if you want to defeat the automagic configuration, you must also
-set `py-smart-indentation' to nil in your `python-mode-hook'."
-  :type 'boolean
-  :group 'python)
-
-(defcustom py-align-multiline-strings-p t
-  "*Flag describing how multi-line triple quoted strings are aligned.
-When this flag is non-nil, continuation lines are lined up under the
-preceding line's indentation.  When this flag is nil, continuation
-lines are aligned to column zero."
-  :type '(choice (const :tag "Align under preceding line" t)
-		 (const :tag "Align to column zero" nil))
-  :group 'python)
-
-(defcustom py-block-comment-prefix "##"
-  "*String used by \\[comment-region] to comment out a block of code.
-This should follow the convention for non-indenting comment lines so
-that the indentation commands won't get confused (i.e., the string
-should be of the form `#x...' where `x' is not a blank or a tab, and
-`...' is arbitrary).  However, this string should not end in whitespace."
-  :type 'string
-  :group 'python)
-
-(defcustom py-honor-comment-indentation t
-  "*Controls how comment lines influence subsequent indentation.
-
-When nil, all comment lines are skipped for indentation purposes, and
-if possible, a faster algorithm is used (i.e. X/Emacs 19 and beyond).
-
-When t, lines that begin with a single `#' are a hint to subsequent
-line indentation.  If the previous line is such a comment line (as
-opposed to one that starts with `py-block-comment-prefix'), then its
-indentation is used as a hint for this line's indentation.  Lines that
-begin with `py-block-comment-prefix' are ignored for indentation
-purposes.
-
-When not nil or t, comment lines that begin with a single `#' are used
-as indentation hints, unless the comment character is in column zero."
-  :type '(choice
-	  (const :tag "Skip all comment lines (fast)" nil)
-	  (const :tag "Single # `sets' indentation for next line" t)
-	  (const :tag "Single # `sets' indentation except at column zero"
-		 other)
-	  )
-  :group 'python)
-
-(defcustom py-temp-directory
-  (let ((ok '(lambda (x)
-	       (and x
-		    (setq x (expand-file-name x)) ; always true
-		    (file-directory-p x)
-		    (file-writable-p x)
-		    x))))
-    (or (funcall ok (getenv "TMPDIR"))
-	(funcall ok "/usr/tmp")
-	(funcall ok "/tmp")
-	(funcall ok "/var/tmp")
-	(funcall ok  ".")
-	(error
-	 "Couldn't find a usable temp directory -- set `py-temp-directory'")))
-  "*Directory used for temporary files created by a *Python* process.
-By default, the first directory from this list that exists and that you
-can write into: the value (if any) of the environment variable TMPDIR,
-/usr/tmp, /tmp, /var/tmp, or the current directory."
-  :type 'string
-  :group 'python)
-
-(defcustom py-beep-if-tab-change t
-  "*Ring the bell if `tab-width' is changed.
-If a comment of the form
-
-  \t# vi:set tabsize=<number>:
-
-is found before the first code line when the file is entered, and the
-current value of (the general Emacs variable) `tab-width' does not
-equal <number>, `tab-width' is set to <number>, a message saying so is
-displayed in the echo area, and if `py-beep-if-tab-change' is non-nil
-the Emacs bell is also rung as a warning."
-  :type 'boolean
-  :group 'python)
-
-(defcustom py-jump-on-exception t
-  "*Jump to innermost exception frame in *Python Output* buffer.
-When this variable is non-nil and an exception occurs when running
-Python code synchronously in a subprocess, jump immediately to the
-source code of the innermost traceback frame."
-  :type 'boolean
-  :group 'python)
-
-(defcustom py-ask-about-save t
-  "If not nil, ask about which buffers to save before executing some code.
-Otherwise, all modified buffers are saved without asking."
-  :type 'boolean
-  :group 'python)
-
-(defcustom py-backspace-function 'backward-delete-char-untabify
-  "*Function called by `py-electric-backspace' when deleting backwards."
-  :type 'function
-  :group 'python)
-
-(defcustom py-delete-function 'delete-char
-  "*Function called by `py-electric-delete' when deleting forwards."
-  :type 'function
-  :group 'python)
-
-(defcustom py-imenu-show-method-args-p nil
-  "*Controls echoing of arguments of functions & methods in the Imenu buffer.
-When non-nil, arguments are printed."
-  :type 'boolean
-  :group 'python)
-(make-variable-buffer-local 'py-indent-offset)
-
-(defcustom py-pdbtrack-do-tracking-p t
-  "*Controls whether the pdbtrack feature is enabled or not.
-When non-nil, pdbtrack is enabled in all comint-based buffers,
-e.g. shell buffers and the *Python* buffer.  When using pdb to debug a
-Python program, pdbtrack notices the pdb prompt and displays the
-source file and line that the program is stopped at, much the same way
-as gud-mode does for debugging C programs with gdb."
-  :type 'boolean
-  :group 'python)
-(make-variable-buffer-local 'py-pdbtrack-do-tracking-p)
-
-(defcustom py-pdbtrack-minor-mode-string " PDB"
-  "*String to use in the minor mode list when pdbtrack is enabled."
-  :type 'string
-  :group 'python)
-
-(defcustom py-import-check-point-max
-  20000
-  "Maximum number of characters to search for a Java-ish import statement.
-When `python-mode' tries to calculate the shell to use (either a
-CPython or a Jython shell), it looks at the so-called `shebang' line
--- i.e. #! line.  If that's not available, it looks at some of the
-file heading imports to see if they look Java-like."
-  :type 'integer
-  :group 'python
-  )
-
-(make-obsolete-variable 'py-jpython-packages 'py-jython-packages)
-(defcustom py-jython-packages
-  '("java" "javax" "org" "com")
-  "Imported packages that imply `jython-mode'."
-  :type '(repeat string)
-  :group 'python)
-
-;; Not customizable
-(defvar py-master-file nil
-  "If non-nil, execute the named file instead of the buffer's file.
-The intent is to allow you to set this variable in the file's local
-variable section, e.g.:
-
-    # Local Variables:
-    # py-master-file: \"master.py\"
-    # End:
-
-so that typing \\[py-execute-buffer] in that buffer executes the named
-master file instead of the buffer's file.  If the file name has a
-relative path, the value of variable `default-directory' for the
-buffer is prepended to come up with a file name.")
-(make-variable-buffer-local 'py-master-file)
-
-(defcustom py-pychecker-command "pychecker"
-  "*Shell command used to run Pychecker."
-  :type 'string
-  :group 'python
-  :tag "Pychecker Command")
-
-(defcustom py-pychecker-command-args '("--stdlib")
-  "*List of string arguments to be passed to pychecker."
-  :type '(repeat string)
-  :group 'python
-  :tag "Pychecker Command Args")
-
-(defvar py-shell-alist
-  '(("jython" . 'jython)
-    ("python" . 'cpython))
-  "*Alist of interpreters and python shells. Used by `py-choose-shell'
-to select the appropriate python interpreter mode for a file.")
-
-(defcustom py-shell-input-prompt-1-regexp "^>>> "
-  "*A regular expression to match the input prompt of the shell."
-  :type 'string
-  :group 'python)
-
-(defcustom py-shell-input-prompt-2-regexp "^[.][.][.] "
-  "*A regular expression to match the input prompt of the shell after the
-  first line of input."
-  :type 'string
-  :group 'python)
-
-(defcustom py-shell-switch-buffers-on-execute t
-  "*Controls switching to the Python buffer where commands are
-  executed.  When non-nil the buffer switches to the Python buffer, if
-  not no switching occurs."
-  :type 'boolean
-  :group 'python)
-
-
-;; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-;; NO USER DEFINABLE VARIABLES BEYOND THIS POINT
-
-(defvar py-line-number-offset 0
-  "When an exception occurs as a result of py-execute-region, a
-subsequent py-up-exception needs the line number where the region
-started, in order to jump to the correct file line.  This variable is
-set in py-execute-region and used in py-jump-to-exception.")
-
-(defconst py-emacs-features
-  (let (features)
-   features)
-  "A list of features extant in the Emacs you are using.
-There are many flavors of Emacs out there, with different levels of
-support for features needed by `python-mode'.")
-
-;; Face for None, True, False, self, and Ellipsis
-(defvar py-pseudo-keyword-face 'py-pseudo-keyword-face
-  "Face for pseudo keywords in Python mode, like self, True, False, Ellipsis.")
-(make-face 'py-pseudo-keyword-face)
-
-;; PEP 318 decorators
-(defvar py-decorators-face 'py-decorators-face
-  "Face method decorators.")
-(make-face 'py-decorators-face)
-
-;; Face for builtins
-(defvar py-builtins-face 'py-builtins-face
-  "Face for builtins like TypeError, object, open, and exec.")
-(make-face 'py-builtins-face)
-
-;; XXX, TODO, and FIXME comments and such
-(defvar py-XXX-tag-face 'py-XXX-tag-face
-  "Face for XXX, TODO, and FIXME tags")
-(make-face 'py-XXX-tag-face)
-
-(defun py-font-lock-mode-hook ()
-  (or (face-differs-from-default-p 'py-pseudo-keyword-face)
-      (copy-face 'font-lock-keyword-face 'py-pseudo-keyword-face))
-  (or (face-differs-from-default-p 'py-builtins-face)
-      (copy-face 'font-lock-keyword-face 'py-builtins-face))
-  (or (face-differs-from-default-p 'py-decorators-face)
-      (copy-face 'py-pseudo-keyword-face 'py-decorators-face))
-  (or (face-differs-from-default-p 'py-XXX-tag-face)
-      (copy-face 'font-lock-comment-face 'py-XXX-tag-face))
-  )
-(add-hook 'font-lock-mode-hook 'py-font-lock-mode-hook)
-
-(defvar python-font-lock-keywords
-  (let ((kw1 (mapconcat 'identity
-			'("and"      "assert"   "break"   "class"
-			  "continue" "def"      "del"     "elif"
-			  "else"     "except"   "exec"    "for"
-			  "from"     "global"   "if"      "import"
-			  "in"       "is"       "lambda"  "not"
-			  "or"       "pass"     "print"   "raise"
-			  "return"   "while"    "with"    "yield"
-			  )
-			"\\|"))
-	(kw2 (mapconcat 'identity
-			'("else:" "except:" "finally:" "try:")
-			"\\|"))
-	(kw3 (mapconcat 'identity
-			'("ArithmeticError" "AssertionError"
-			  "AttributeError" "DeprecationWarning" "EOFError"
-			  "Ellipsis" "EnvironmentError" "Exception" "False"
-			  "FloatingPointError" "FutureWarning" "IOError"
-			  "ImportError" "IndentationError" "IndexError"
-			  "KeyError" "KeyboardInterrupt" "LookupError"
-			  "MemoryError" "NameError" "None" "NotImplemented"
-			  "NotImplementedError" "OSError" "OverflowError"
-			  "OverflowWarning" "PendingDeprecationWarning"
-			  "ReferenceError" "RuntimeError" "RuntimeWarning"
-			  "StopIteration" "SyntaxError"
-			  "SyntaxWarning" "SystemError" "SystemExit"
-			  "TabError" "True" "TypeError" "UnboundLocalError"
-			  "UnicodeDecodeError" "UnicodeEncodeError"
-			  "UnicodeError" "UnicodeTranslateError"
-			  "UserWarning" "ValueError" "Warning"
-			  "ZeroDivisionError" "__debug__"
-			  "__import__" "__name__" "abs" "apply" "basestring"
-			  "bool" "buffer" "callable" "chr" "classmethod"
-			  "cmp" "compile" "complex" "copyright"
-			  "delattr" "dict" "dir" "divmod"
-			  "enumerate" "eval" "exit" "file"
-			  "filter" "float" "getattr" "globals" "hasattr"
-			  "hash" "hex" "id" "int"
-			  "isinstance" "issubclass" "iter" "len" "license"
-			  "list" "locals" "long" "map" "max" "min" "object"
-			  "oct" "open" "ord" "pow" "property" "range"
-			  "reload" "repr" "round"
-			  "setattr" "slice" "staticmethod" "str" "sum"
-			  "super" "tuple" "type" "unichr" "unicode" "vars"
-			  "zip")
-			"\\|"))
-	(kw4 (mapconcat 'identity
-			;; Exceptions and warnings
-			'("ArithmeticError" "AssertionError"
-			  "AttributeError" "DeprecationWarning" "EOFError"
-			  "EnvironmentError" "Exception"
-			  "FloatingPointError" "FutureWarning" "IOError"
-			  "ImportError" "IndentationError" "IndexError"
-			  "KeyError" "KeyboardInterrupt" "LookupError"
-			  "MemoryError" "NameError" "NotImplemented"
-			  "NotImplementedError" "OSError" "OverflowError"
-			  "OverflowWarning" "PendingDeprecationWarning"
-			  "ReferenceError" "RuntimeError" "RuntimeWarning"
-			  "StandardError" "StopIteration" "SyntaxError"
-			  "SyntaxWarning" "SystemError" "SystemExit"
-			  "TabError" "TypeError" "UnboundLocalError"
-			  "UnicodeDecodeError" "UnicodeEncodeError"
-			  "UnicodeError" "UnicodeTranslateError"
-			  "UserWarning" "ValueError" "Warning"
-			  "ZeroDivisionError")
-			"\\|"))
-	)
-    (list
-     '("^[ \t]*\\(@.+\\)" 1 'py-decorators-face)
-     ;; keywords
-     (cons (concat "\\<\\(" kw1 "\\)\\>[ \n\t(]") 1)
-     ;; builtins when they don't appear as object attributes
-     (list (concat "\\([^. \t]\\|^\\)[ \t]*\\<\\(" kw3 "\\)\\>[ \n\t(]") 2
-	   'py-builtins-face)
-     ;; block introducing keywords with immediately following colons.
-     ;; Yes "except" is in both lists.
-     (cons (concat "\\<\\(" kw2 "\\)[ \n\t(]") 1)
-     ;; Exceptions
-     (list (concat "\\<\\(" kw4 "\\)[ \n\t:,(]") 1 'py-builtins-face)
-     ;; `as' but only in "import foo as bar" or "with foo as bar"
-     '("[ \t]*\\(\\<from\\>.*\\)?\\<import\\>.*\\<\\(as\\)\\>" . 2)
-     '("[ \t]*\\<with\\>.*\\<\\(as\\)\\>" . 1)
-     ;; classes
-     '("\\<class[ \t]+\\([a-zA-Z_]+[a-zA-Z0-9_]*\\)" 1 font-lock-type-face)
-     ;; functions
-     '("\\<def[ \t]+\\([a-zA-Z_]+[a-zA-Z0-9_]*\\)"
-       1 font-lock-function-name-face)
-     ;; pseudo-keywords
-     '("\\<\\(self\\|None\\|True\\|False\\|Ellipsis\\)\\>"
-       1 py-pseudo-keyword-face)
-     ;; XXX, TODO, and FIXME tags
-     '("XXX\\|TODO\\|FIXME" 0 py-XXX-tag-face t)
-     ))
-  "Additional expressions to highlight in Python mode.")
-(put 'python-mode 'font-lock-defaults '(python-font-lock-keywords))
-
-;; have to bind py-file-queue before installing the kill-emacs-hook
-(defvar py-file-queue nil
-  "Queue of Python temp files awaiting execution.
-Currently-active file is at the head of the list.")
-
-(defvar py-pdbtrack-is-tracking-p nil)
-
-(defvar py-pychecker-history nil)
-
-
-
-;; Constants
-
-(defconst py-stringlit-re
-  (concat
-   ;; These fail if backslash-quote ends the string (not worth
-   ;; fixing?).  They precede the short versions so that the first two
-   ;; quotes don't look like an empty short string.
-   ;;
-   ;; (maybe raw), long single quoted triple quoted strings (SQTQ),
-   ;; with potential embedded single quotes
-   "[rR]?'''[^']*\\(\\('[^']\\|''[^']\\)[^']*\\)*'''"
-   "\\|"
-   ;; (maybe raw), long double quoted triple quoted strings (DQTQ),
-   ;; with potential embedded double quotes
-   "[rR]?\"\"\"[^\"]*\\(\\(\"[^\"]\\|\"\"[^\"]\\)[^\"]*\\)*\"\"\""
-   "\\|"
-   "[rR]?'\\([^'\n\\]\\|\\\\.\\)*'"	; single-quoted
-   "\\|"				; or
-   "[rR]?\"\\([^\"\n\\]\\|\\\\.\\)*\""	; double-quoted
-   )
-  "Regular expression matching a Python string literal.")
-
-(defconst py-continued-re
-  ;; This is tricky because a trailing backslash does not mean
-  ;; continuation if it's in a comment
-  (concat
-   "\\(" "[^#'\"\n\\]" "\\|" py-stringlit-re "\\)*"
-   "\\\\$")
-  "Regular expression matching Python backslash continuation lines.")
-
-(defconst py-blank-or-comment-re "[ \t]*\\($\\|#\\)"
-  "Regular expression matching a blank or comment line.")
-
-(defconst py-outdent-re
-  (concat "\\(" (mapconcat 'identity
-			   '("else:"
-			     "except\\(\\s +.*\\)?:"
-			     "finally:"
-			     "elif\\s +.*:")
-			   "\\|")
-	  "\\)")
-  "Regular expression matching statements to be dedented one level.")
-
-(defconst py-block-closing-keywords-re
-  "\\(return\\|raise\\|break\\|continue\\|pass\\)"
-  "Regular expression matching keywords which typically close a block.")
-
-(defconst py-no-outdent-re
-  (concat
-   "\\("
-   (mapconcat 'identity
-	      (list "try:"
-		    "except\\(\\s +.*\\)?:"
-		    "while\\s +.*:"
-		    "for\\s +.*:"
-		    "if\\s +.*:"
-		    "elif\\s +.*:"
-		    (concat py-block-closing-keywords-re "[ \t\n]")
-		    )
-	      "\\|")
-	  "\\)")
-  "Regular expression matching lines not to dedent after.")
-
-(defvar py-traceback-line-re
-  "[ \t]+File \"\\([^\"]+\\)\", line \\([0-9]+\\)"
-  "Regular expression that describes tracebacks.")
-
-;; pdbtrack constants
-(defconst py-pdbtrack-stack-entry-regexp
-;  "^> \\([^(]+\\)(\\([0-9]+\\))\\([?a-zA-Z0-9_]+\\)()"
-  "^> \\(.*\\)(\\([0-9]+\\))\\([?a-zA-Z0-9_]+\\)()"
-  "Regular expression pdbtrack uses to find a stack trace entry.")
-
-(defconst py-pdbtrack-input-prompt "\n[(<]*[Pp]db[>)]+ "
-  "Regular expression pdbtrack uses to recognize a pdb prompt.")
-
-(defconst py-pdbtrack-track-range 10000
-  "Max number of characters from end of buffer to search for stack entry.")
-
-
-
-;; Major mode boilerplate
-
-;; define a mode-specific abbrev table for those who use such things
-(defvar python-mode-abbrev-table nil
-  "Abbrev table in use in `python-mode' buffers.")
-(define-abbrev-table 'python-mode-abbrev-table nil)
-
-(defvar python-mode-hook nil
-  "*Hook called by `python-mode'.")
-
-(make-obsolete-variable 'jpython-mode-hook 'jython-mode-hook)
-(defvar jython-mode-hook nil
-  "*Hook called by `jython-mode'. `jython-mode' also calls
-`python-mode-hook'.")
-
-(defvar py-shell-hook nil
-  "*Hook called by `py-shell'.")
-
-;; In previous version of python-mode.el, the hook was incorrectly
-;; called py-mode-hook, and was not defvar'd.  Deprecate its use.
-(and (fboundp 'make-obsolete-variable)
-     (make-obsolete-variable 'py-mode-hook 'python-mode-hook))
-
-(defvar py-mode-map ()
-  "Keymap used in `python-mode' buffers.")
-(if py-mode-map
-    nil
-  (setq py-mode-map (make-sparse-keymap))
-  ;; electric keys
-  (define-key py-mode-map ":" 'py-electric-colon)
-  ;; indentation level modifiers
-  (define-key py-mode-map "\C-c\C-l"  'py-shift-region-left)
-  (define-key py-mode-map "\C-c\C-r"  'py-shift-region-right)
-  (define-key py-mode-map "\C-c<"     'py-shift-region-left)
-  (define-key py-mode-map "\C-c>"     'py-shift-region-right)
-  ;; subprocess commands
-  (define-key py-mode-map "\C-c\C-c"  'py-execute-buffer)
-  (define-key py-mode-map "\C-c\C-m"  'py-execute-import-or-reload)
-  (define-key py-mode-map "\C-c\C-s"  'py-execute-string)
-  (define-key py-mode-map "\C-c|"     'py-execute-region)
-  (define-key py-mode-map "\e\C-x"    'py-execute-def-or-class)
-  (define-key py-mode-map "\C-c!"     'py-shell)
-  (define-key py-mode-map "\C-c\C-t"  'py-toggle-shells)
-  ;; Caution!  Enter here at your own risk.  We are trying to support
-  ;; several behaviors and it gets disgusting. :-( This logic ripped
-  ;; largely from CC Mode.
-  ;;
-  ;; In XEmacs 19, Emacs 19, and Emacs 20, we use this to bind
-  ;; backwards deletion behavior to DEL, which both Delete and
-  ;; Backspace get translated to.  There's no way to separate this
-  ;; behavior in a clean way, so deal with it!  Besides, it's been
-  ;; this way since the dawn of time.
-  (if (not (boundp 'delete-key-deletes-forward))
-      (define-key py-mode-map "\177" 'py-electric-backspace)
-    ;; However, XEmacs 20 actually achieved enlightenment.  It is
-    ;; possible to sanely define both backward and forward deletion
-    ;; behavior under X separately (TTYs are forever beyond hope, but
-    ;; who cares?  XEmacs 20 does the right thing with these too).
-    (define-key py-mode-map [delete]    'py-electric-delete)
-    (define-key py-mode-map [backspace] 'py-electric-backspace))
-  ;; Separate M-BS from C-M-h.  The former should remain
-  ;; backward-kill-word.
-  (define-key py-mode-map [(control meta h)] 'py-mark-def-or-class)
-  (define-key py-mode-map "\C-c\C-k"  'py-mark-block)
-  ;; Miscellaneous
-  (define-key py-mode-map "\C-c:"     'py-guess-indent-offset)
-  (define-key py-mode-map "\C-c\t"    'py-indent-region)
-  (define-key py-mode-map "\C-c\C-d"  'py-pdbtrack-toggle-stack-tracking)
-  (define-key py-mode-map "\C-c\C-n"  'py-next-statement)
-  (define-key py-mode-map "\C-c\C-p"  'py-previous-statement)
-  (define-key py-mode-map "\C-c\C-u"  'py-goto-block-up)
-  (define-key py-mode-map "\C-c#"     'py-comment-region)
-  (define-key py-mode-map "\C-c?"     'py-describe-mode)
-  (define-key py-mode-map "\C-c\C-h"  'py-help-at-point)
-  (define-key py-mode-map "\e\C-a"    'py-beginning-of-def-or-class)
-  (define-key py-mode-map "\e\C-e"    'py-end-of-def-or-class)
-  (define-key py-mode-map "\C-c-"     'py-up-exception)
-  (define-key py-mode-map "\C-c="     'py-down-exception)
-  ;; stuff that is `standard' but doesn't interface well with
-  ;; python-mode, which forces us to rebind to special commands
-  (define-key py-mode-map "\C-xnd"    'py-narrow-to-defun)
-  ;; information
-  (define-key py-mode-map "\C-c\C-b" 'py-submit-bug-report)
-  (define-key py-mode-map "\C-c\C-v" 'py-version)
-  (define-key py-mode-map "\C-c\C-w" 'py-pychecker-run)
-  ;; shadow global bindings for newline-and-indent w/ the py- version.
-  ;; BAW - this is extremely bad form, but I'm not going to change it
-  ;; for now.
-  (mapcar #'(lambda (key)
-	      (define-key py-mode-map key 'py-newline-and-indent))
-	  (where-is-internal 'newline-and-indent))
-  ;; Force RET to be py-newline-and-indent even if it didn't get
-  ;; mapped by the above code.  motivation: Emacs' default binding for
-  ;; RET is `newline' and C-j is `newline-and-indent'.  Most Pythoneers
-  ;; expect RET to do a `py-newline-and-indent' and any Emacsers who
-  ;; dislike this are probably knowledgeable enough to do a rebind.
-  ;; However, we do *not* change C-j since many Emacsers have already
-  ;; swapped RET and C-j and they don't want C-j bound to `newline' to
-  ;; change.
-  (define-key py-mode-map "\C-m" 'py-newline-and-indent)
-  )
-
-(defvar py-mode-output-map nil
-  "Keymap used in *Python Output* buffers.")
-(if py-mode-output-map
-    nil
-  (setq py-mode-output-map (make-sparse-keymap))
-  (define-key py-mode-output-map [button2]  'py-mouseto-exception)
-  (define-key py-mode-output-map "\C-c\C-c" 'py-goto-exception)
-  ;; TBD: Disable all self-inserting keys.  This is bogus, we should
-  ;; really implement this as *Python Output* buffer being read-only
-  (mapcar #' (lambda (key)
-	       (define-key py-mode-output-map key
-		 #'(lambda () (interactive) (beep))))
-	     (where-is-internal 'self-insert-command))
-  )
-
-(defvar py-shell-map nil
-  "Keymap used in *Python* shell buffers.")
-(if py-shell-map
-    nil
-  (setq py-shell-map (copy-keymap comint-mode-map))
-  (define-key py-shell-map [tab]   'tab-to-tab-stop)
-  (define-key py-shell-map "\C-c-" 'py-up-exception)
-  (define-key py-shell-map "\C-c=" 'py-down-exception)
-  )
-
-(defvar py-mode-syntax-table nil
-  "Syntax table used in `python-mode' buffers.")
-(when (not py-mode-syntax-table)
-  (setq py-mode-syntax-table (make-syntax-table))
-  (modify-syntax-entry ?\( "()" py-mode-syntax-table)
-  (modify-syntax-entry ?\) ")(" py-mode-syntax-table)
-  (modify-syntax-entry ?\[ "(]" py-mode-syntax-table)
-  (modify-syntax-entry ?\] ")[" py-mode-syntax-table)
-  (modify-syntax-entry ?\{ "(}" py-mode-syntax-table)
-  (modify-syntax-entry ?\} "){" py-mode-syntax-table)
-  ;; Add operator symbols misassigned in the std table
-  (modify-syntax-entry ?\$ "."  py-mode-syntax-table)
-  (modify-syntax-entry ?\% "."  py-mode-syntax-table)
-  (modify-syntax-entry ?\& "."  py-mode-syntax-table)
-  (modify-syntax-entry ?\* "."  py-mode-syntax-table)
-  (modify-syntax-entry ?\+ "."  py-mode-syntax-table)
-  (modify-syntax-entry ?\- "."  py-mode-syntax-table)
-  (modify-syntax-entry ?\/ "."  py-mode-syntax-table)
-  (modify-syntax-entry ?\< "."  py-mode-syntax-table)
-  (modify-syntax-entry ?\= "."  py-mode-syntax-table)
-  (modify-syntax-entry ?\> "."  py-mode-syntax-table)
-  (modify-syntax-entry ?\| "."  py-mode-syntax-table)
-  ;; For historical reasons, underscore is word class instead of
-  ;; symbol class.  GNU conventions say it should be symbol class, but
-  ;; there's a natural conflict between what major mode authors want
-  ;; and what users expect from `forward-word' and `backward-word'.
-  ;; Guido and I have hashed this out and have decided to keep
-  ;; underscore in word class.  If you're tempted to change it, try
-  ;; binding M-f and M-b to py-forward-into-nomenclature and
-  ;; py-backward-into-nomenclature instead.  This doesn't help in all
-  ;; situations where you'd want the different behavior
-  ;; (e.g. backward-kill-word).
-  (modify-syntax-entry ?\_ "w"  py-mode-syntax-table)
-  ;; Both single quote and double quote are string delimiters
-  (modify-syntax-entry ?\' "\"" py-mode-syntax-table)
-  (modify-syntax-entry ?\" "\"" py-mode-syntax-table)
-  ;; comment delimiters
-  (modify-syntax-entry ?\# "<"  py-mode-syntax-table)
-  (modify-syntax-entry ?\n ">"  py-mode-syntax-table)
-  )
-
-;; An auxiliary syntax table which places underscore and dot in the
-;; symbol class for simplicity
-(defvar py-dotted-expression-syntax-table nil
-  "Syntax table used to identify Python dotted expressions.")
-(when (not py-dotted-expression-syntax-table)
-  (setq py-dotted-expression-syntax-table
-	(copy-syntax-table py-mode-syntax-table))
-  (modify-syntax-entry ?_ "_" py-dotted-expression-syntax-table)
-  (modify-syntax-entry ?. "_" py-dotted-expression-syntax-table))
-
-
-
-;; Utilities
-(defmacro py-safe (&rest body)
-  "Safely execute BODY, return nil if an error occurred."
-  (` (condition-case nil
-	 (progn (,@ body))
-       (error nil))))
-
-(defsubst py-keep-region-active ()
-  "Keep the region active in XEmacs."
-  ;; Ignore byte-compiler warnings you might see.  Also note that
-  ;; FSF's Emacs 19 does it differently; its policy doesn't require us
-  ;; to take explicit action.
-  (and (boundp 'zmacs-region-stays)
-       (setq zmacs-region-stays t)))
-
-(defsubst py-point (position)
-  "Returns the value of point at certain commonly referenced POSITIONs.
-POSITION can be one of the following symbols:
-
-  bol  -- beginning of line
-  eol  -- end of line
-  bod  -- beginning of def or class
-  eod  -- end of def or class
-  bob  -- beginning of buffer
-  eob  -- end of buffer
-  boi  -- back to indentation
-  bos  -- beginning of statement
-
-This function does not modify point or mark."
-  (let ((here (point)))
-    (cond
-     ((eq position 'bol) (beginning-of-line))
-     ((eq position 'eol) (end-of-line))
-     ((eq position 'bod) (py-beginning-of-def-or-class 'either))
-     ((eq position 'eod) (py-end-of-def-or-class 'either))
-     ;; Kind of funny, I know, but useful for py-up-exception.
-     ((eq position 'bob) (beginning-of-buffer))
-     ((eq position 'eob) (end-of-buffer))
-     ((eq position 'boi) (back-to-indentation))
-     ((eq position 'bos) (py-goto-initial-line))
-     (t (error "Unknown buffer position requested: %s" position))
-     )
-    (prog1
-	(point)
-      (goto-char here))))
-
-(defsubst py-highlight-line (from to file line)
-  (cond
-   ((fboundp 'make-extent)
-    ;; XEmacs
-    (let ((e (make-extent from to)))
-      (set-extent-property e 'mouse-face 'highlight)
-      (set-extent-property e 'py-exc-info (cons file line))
-      (set-extent-property e 'keymap py-mode-output-map)))
-   (t
-    ;; Emacs -- Please port this!
-    )
-   ))
-
-(defun py-in-literal (&optional lim)
-  "Return non-nil if point is in a Python literal (a comment or string).
-Optional argument LIM indicates the beginning of the containing form,
-i.e. the limit on how far back to scan."
-  ;; This is the version used for non-XEmacs, which has a nicer
-  ;; interface.
-  ;;
-  ;; WARNING: Watch out for infinite recursion.
-  (let* ((lim (or lim (py-point 'bod)))
-	 (state (parse-partial-sexp lim (point))))
-    (cond
-     ((nth 3 state) 'string)
-     ((nth 4 state) 'comment)
-     (t nil))))
-
-;; XEmacs has a built-in function that should make this much quicker.
-;; In this case, lim is ignored
-(defun py-fast-in-literal (&optional lim)
-  "Fast version of `py-in-literal', used only by XEmacs.
-Optional LIM is ignored."
-  ;; don't have to worry about context == 'block-comment
-  (buffer-syntactic-context))
-
-(if (fboundp 'buffer-syntactic-context)
-    (defalias 'py-in-literal 'py-fast-in-literal))
-
-
-
-;; Menu definitions, only relevent if you have the easymenu.el package
-;; (standard in the latest Emacs 19 and XEmacs 19 distributions).
-(defvar py-menu nil
-  "Menu for Python Mode.
-This menu will get created automatically if you have the `easymenu'
-package.  Note that the latest X/Emacs releases contain this package.")
-
-(and (py-safe (require 'easymenu) t)
-     (easy-menu-define
-      py-menu py-mode-map "Python Mode menu"
-      '("Python"
-	["Comment Out Region"   py-comment-region  (mark)]
-	["Uncomment Region"     (py-comment-region (point) (mark) '(4)) (mark)]
-	"-"
-	["Mark current block"   py-mark-block t]
-	["Mark current def"     py-mark-def-or-class t]
-	["Mark current class"   (py-mark-def-or-class t) t]
-	"-"
-	["Shift region left"    py-shift-region-left (mark)]
-	["Shift region right"   py-shift-region-right (mark)]
-	"-"
-	["Import/reload file"   py-execute-import-or-reload t]
-	["Execute buffer"       py-execute-buffer t]
-	["Execute region"       py-execute-region (mark)]
-	["Execute def or class" py-execute-def-or-class (mark)]
-	["Execute string"       py-execute-string t]
-	["Start interpreter..." py-shell t]
-	"-"
-	["Go to start of block" py-goto-block-up t]
-	["Go to start of class" (py-beginning-of-def-or-class t) t]
-	["Move to end of class" (py-end-of-def-or-class t) t]
-	["Move to start of def" py-beginning-of-def-or-class t]
-	["Move to end of def"   py-end-of-def-or-class t]
-	"-"
-	["Describe mode"        py-describe-mode t]
-	)))
-
-
-
-;; Imenu definitions
-(defvar py-imenu-class-regexp
-  (concat				; <<classes>>
-   "\\("				;
-   "^[ \t]*"				; newline and maybe whitespace
-   "\\(class[ \t]+[a-zA-Z0-9_]+\\)"	; class name
-					; possibly multiple superclasses
-   "\\([ \t]*\\((\\([a-zA-Z0-9_,. \t\n]\\)*)\\)?\\)"
-   "[ \t]*:"				; and the final :
-   "\\)"				; >>classes<<
-   )
-  "Regexp for Python classes for use with the Imenu package."
-  )
-
-(defvar py-imenu-method-regexp
-  (concat                               ; <<methods and functions>>
-   "\\("                                ;
-   "^[ \t]*"                            ; new line and maybe whitespace
-   "\\(def[ \t]+"                       ; function definitions start with def
-   "\\([a-zA-Z0-9_]+\\)"                ;   name is here
-					;   function arguments...
-;;   "[ \t]*(\\([-+/a-zA-Z0-9_=,\* \t\n.()\"'#]*\\))"
-   "[ \t]*(\\([^:#]*\\))"
-   "\\)"                                ; end of def
-   "[ \t]*:"                            ; and then the :
-   "\\)"                                ; >>methods and functions<<
-   )
-  "Regexp for Python methods/functions for use with the Imenu package."
-  )
-
-(defvar py-imenu-method-no-arg-parens '(2 8)
-  "Indices into groups of the Python regexp for use with Imenu.
-
-Using these values will result in smaller Imenu lists, as arguments to
-functions are not listed.
-
-See the variable `py-imenu-show-method-args-p' for more
-information.")
-
-(defvar py-imenu-method-arg-parens '(2 7)
-  "Indices into groups of the Python regexp for use with imenu.
-Using these values will result in large Imenu lists, as arguments to
-functions are listed.
-
-See the variable `py-imenu-show-method-args-p' for more
-information.")
-
-;; Note that in this format, this variable can still be used with the
-;; imenu--generic-function. Otherwise, there is no real reason to have
-;; it.
-(defvar py-imenu-generic-expression
-  (cons
-   (concat
-    py-imenu-class-regexp
-    "\\|"				; or...
-    py-imenu-method-regexp
-    )
-   py-imenu-method-no-arg-parens)
-  "Generic Python expression which may be used directly with Imenu.
-Used by setting the variable `imenu-generic-expression' to this value.
-Also, see the function \\[py-imenu-create-index] for a better
-alternative for finding the index.")
-
-;; These next two variables are used when searching for the Python
-;; class/definitions. Just saving some time in accessing the
-;; generic-python-expression, really.
-(defvar py-imenu-generic-regexp nil)
-(defvar py-imenu-generic-parens nil)
-
-
-(defun py-imenu-create-index-function ()
-  "Python interface function for the Imenu package.
-Finds all Python classes and functions/methods. Calls function
-\\[py-imenu-create-index-engine].  See that function for the details
-of how this works."
-  (setq py-imenu-generic-regexp (car py-imenu-generic-expression)
-	py-imenu-generic-parens (if py-imenu-show-method-args-p
-				    py-imenu-method-arg-parens
-				  py-imenu-method-no-arg-parens))
-  (goto-char (point-min))
-  ;; Warning: When the buffer has no classes or functions, this will
-  ;; return nil, which seems proper according to the Imenu API, but
-  ;; causes an error in the XEmacs port of Imenu.  Sigh.
-  (py-imenu-create-index-engine nil))
-
-(defun py-imenu-create-index-engine (&optional start-indent)
-  "Function for finding Imenu definitions in Python.
-
-Finds all definitions (classes, methods, or functions) in a Python
-file for the Imenu package.
-
-Returns a possibly nested alist of the form
-
-	(INDEX-NAME . INDEX-POSITION)
-
-The second element of the alist may be an alist, producing a nested
-list as in
-
-	(INDEX-NAME . INDEX-ALIST)
-
-This function should not be called directly, as it calls itself
-recursively and requires some setup.  Rather this is the engine for
-the function \\[py-imenu-create-index-function].
-
-It works recursively by looking for all definitions at the current
-indention level.  When it finds one, it adds it to the alist.  If it
-finds a definition at a greater indentation level, it removes the
-previous definition from the alist. In its place it adds all
-definitions found at the next indentation level.  When it finds a
-definition that is less indented then the current level, it returns
-the alist it has created thus far.
-
-The optional argument START-INDENT indicates the starting indentation
-at which to continue looking for Python classes, methods, or
-functions.  If this is not supplied, the function uses the indentation
-of the first definition found."
-  (let (index-alist
-	sub-method-alist
-	looking-p
-	def-name prev-name
-	cur-indent def-pos
-	(class-paren (first  py-imenu-generic-parens))
-	(def-paren   (second py-imenu-generic-parens)))
-    (setq looking-p
-	  (re-search-forward py-imenu-generic-regexp (point-max) t))
-    (while looking-p
-      (save-excursion
-	;; used to set def-name to this value but generic-extract-name
-	;; is new to imenu-1.14. this way it still works with
-	;; imenu-1.11
-	;;(imenu--generic-extract-name py-imenu-generic-parens))
-	(let ((cur-paren (if (match-beginning class-paren)
-			     class-paren def-paren)))
-	  (setq def-name
-		(buffer-substring-no-properties (match-beginning cur-paren)
-						(match-end cur-paren))))
-	(save-match-data
-	  (py-beginning-of-def-or-class 'either))
-	(beginning-of-line)
-	(setq cur-indent (current-indentation)))
-      ;; HACK: want to go to the next correct definition location.  We
-      ;; explicitly list them here but it would be better to have them
-      ;; in a list.
-      (setq def-pos
-	    (or (match-beginning class-paren)
-		(match-beginning def-paren)))
-      ;; if we don't have a starting indent level, take this one
-      (or start-indent
-	  (setq start-indent cur-indent))
-      ;; if we don't have class name yet, take this one
-      (or prev-name
-	  (setq prev-name def-name))
-      ;; what level is the next definition on?  must be same, deeper
-      ;; or shallower indentation
-      (cond
-       ;; Skip code in comments and strings
-       ((py-in-literal))
-       ;; at the same indent level, add it to the list...
-       ((= start-indent cur-indent)
-	(push (cons def-name def-pos) index-alist))
-       ;; deeper indented expression, recurse
-       ((< start-indent cur-indent)
-	;; the point is currently on the expression we're supposed to
-	;; start on, so go back to the last expression. The recursive
-	;; call will find this place again and add it to the correct
-	;; list
-	(re-search-backward py-imenu-generic-regexp (point-min) 'move)
-	(setq sub-method-alist (py-imenu-create-index-engine cur-indent))
-	(if sub-method-alist
-	    ;; we put the last element on the index-alist on the start
-	    ;; of the submethod alist so the user can still get to it.
-	    (let ((save-elmt (pop index-alist)))
-	      (push (cons prev-name
-			  (cons save-elmt sub-method-alist))
-		    index-alist))))
-       ;; found less indented expression, we're done.
-       (t
-	(setq looking-p nil)
-	(re-search-backward py-imenu-generic-regexp (point-min) t)))
-      ;; end-cond
-      (setq prev-name def-name)
-      (and looking-p
-	   (setq looking-p
-		 (re-search-forward py-imenu-generic-regexp
-				    (point-max) 'move))))
-    (nreverse index-alist)))
-
-
-
-(defun py-choose-shell-by-shebang ()
-  "Choose CPython or Jython mode by looking at #! on the first line.
-Returns the appropriate mode function.
-Used by `py-choose-shell', and similar to but distinct from
-`set-auto-mode', though it uses `auto-mode-interpreter-regexp' (if available)."
-  ;; look for an interpreter specified in the first line
-  ;; similar to set-auto-mode (files.el)
-  (let* ((re (if (boundp 'auto-mode-interpreter-regexp)
-		 auto-mode-interpreter-regexp
-	       ;; stolen from Emacs 21.2
-	       "#![ \t]?\\([^ \t\n]*/bin/env[ \t]\\)?\\([^ \t\n]+\\)"))
-	 (interpreter (save-excursion
-			(goto-char (point-min))
-			(if (looking-at re)
-			    (match-string 2)
-			  "")))
-	 elt)
-    ;; Map interpreter name to a mode.
-    (setq elt (assoc (file-name-nondirectory interpreter)
-		     py-shell-alist))
-    (and elt (caddr elt))))
-
-
-
-(defun py-choose-shell-by-import ()
-  "Choose CPython or Jython mode based imports.
-If a file imports any packages in `py-jython-packages', within
-`py-import-check-point-max' characters from the start of the file,
-return `jython', otherwise return nil."
-  (let (mode)
-    (save-excursion
-      (goto-char (point-min))
-      (while (and (not mode)
-		  (search-forward-regexp
-		   "^\\(\\(from\\)\\|\\(import\\)\\) \\([^ \t\n.]+\\)"
-		   py-import-check-point-max t))
-	(setq mode (and (member (match-string 4) py-jython-packages)
-			'jython
-			))))
-    mode))
-
-
-(defun py-choose-shell ()
-  "Choose CPython or Jython mode. Returns the appropriate mode function.
-This does the following:
- - look for an interpreter with `py-choose-shell-by-shebang'
- - examine imports using `py-choose-shell-by-import'
- - default to the variable `py-default-interpreter'"
-  (interactive)
-  (or (py-choose-shell-by-shebang)
-      (py-choose-shell-by-import)
-      py-default-interpreter
-;      'cpython ;; don't use to py-default-interpreter, because default
-;               ;; is only way to choose CPython
-      ))
-
-
-;;;###autoload
-(defun python-mode ()
-  "Major mode for editing Python files.
-To submit a problem report, enter `\\[py-submit-bug-report]' from a
-`python-mode' buffer.  Do `\\[py-describe-mode]' for detailed
-documentation.  To see what version of `python-mode' you are running,
-enter `\\[py-version]'.
-
-This mode knows about Python indentation, tokens, comments and
-continuation lines.  Paragraphs are separated by blank lines only.
-
-COMMANDS
-\\{py-mode-map}
-VARIABLES
-
-py-indent-offset\t\tindentation increment
-py-block-comment-prefix\t\tcomment string used by `comment-region'
-py-python-command\t\tshell command to invoke Python interpreter
-py-temp-directory\t\tdirectory used for temp files (if needed)
-py-beep-if-tab-change\t\tring the bell if `tab-width' is changed"
-  (interactive)
-  ;; set up local variables
-  (kill-all-local-variables)
-  (make-local-variable 'font-lock-defaults)
-  (make-local-variable 'paragraph-separate)
-  (make-local-variable 'paragraph-start)
-  (make-local-variable 'require-final-newline)
-  (make-local-variable 'comment-start)
-  (make-local-variable 'comment-end)
-  (make-local-variable 'comment-start-skip)
-  (make-local-variable 'comment-column)
-  (make-local-variable 'comment-indent-function)
-  (make-local-variable 'indent-region-function)
-  (make-local-variable 'indent-line-function)
-  (make-local-variable 'add-log-current-defun-function)
-  (make-local-variable 'fill-paragraph-function)
-  ;;
-  (set-syntax-table py-mode-syntax-table)
-  (setq major-mode              'python-mode
-	mode-name               "Python"
-	local-abbrev-table      python-mode-abbrev-table
-	font-lock-defaults      '(python-font-lock-keywords)
-	paragraph-separate      "^[ \t]*$"
-	paragraph-start         "^[ \t]*$"
-	require-final-newline   t
-	comment-start           "# "
-	comment-end             ""
-	comment-start-skip      "# *"
-	comment-column          40
-	comment-indent-function 'py-comment-indent-function
-	indent-region-function  'py-indent-region
-	indent-line-function    'py-indent-line
-	;; tell add-log.el how to find the current function/method/variable
-	add-log-current-defun-function 'py-current-defun
-
-	fill-paragraph-function 'py-fill-paragraph
-	)
-  (use-local-map py-mode-map)
-  ;; add the menu
-  (if py-menu
-      (easy-menu-add py-menu))
-  ;; Emacs 19 requires this
-  (if (boundp 'comment-multi-line)
-      (setq comment-multi-line nil))
-  ;; Install Imenu if available
-  (when (py-safe (require 'imenu))
-    (setq imenu-create-index-function #'py-imenu-create-index-function)
-    (setq imenu-generic-expression py-imenu-generic-expression)
-    (if (fboundp 'imenu-add-to-menubar)
-	(imenu-add-to-menubar (format "%s-%s" "IM" mode-name)))
-    )
-  ;; Run the mode hook.  Note that py-mode-hook is deprecated.
-  (if python-mode-hook
-      (run-hooks 'python-mode-hook)
-    (run-hooks 'py-mode-hook))
-  ;; Now do the automagical guessing
-  (if py-smart-indentation
-    (let ((offset py-indent-offset))
-      ;; It's okay if this fails to guess a good value
-      (if (and (py-safe (py-guess-indent-offset))
-	       (<= py-indent-offset 8)
-	       (>= py-indent-offset 2))
-	  (setq offset py-indent-offset))
-      (setq py-indent-offset offset)
-      ;; Only turn indent-tabs-mode off if tab-width !=
-      ;; py-indent-offset.  Never turn it on, because the user must
-      ;; have explicitly turned it off.
-      (if (/= tab-width py-indent-offset)
-	  (setq indent-tabs-mode nil))
-      ))
-  ;; Set the default shell if not already set
-  (when (null py-which-shell)
-    (py-toggle-shells (py-choose-shell))))
-
-
-(make-obsolete 'jpython-mode 'jython-mode)
-(defun jython-mode ()
-  "Major mode for editing Jython/Jython files.
-This is a simple wrapper around `python-mode'.
-It runs `jython-mode-hook' then calls `python-mode.'
-It is added to `interpreter-mode-alist' and `py-choose-shell'.
-"
-  (interactive)
-  (python-mode)
-  (py-toggle-shells 'jython)
-  (when jython-mode-hook
-      (run-hooks 'jython-mode-hook)))
-
-
-;; It's handy to add recognition of Python files to the
-;; interpreter-mode-alist and to auto-mode-alist.  With the former, we
-;; can specify different `derived-modes' based on the #! line, but
-;; with the latter, we can't.  So we just won't add them if they're
-;; already added.
-;;;###autoload
-(let ((modes '(("jython" . jython-mode)
-	       ("python" . python-mode))))
-  (while modes
-    (when (not (assoc (car modes) interpreter-mode-alist))
-      (push (car modes) interpreter-mode-alist))
-    (setq modes (cdr modes))))
-;;;###autoload
-(when (not (or (rassq 'python-mode auto-mode-alist)
-	       (rassq 'jython-mode auto-mode-alist)))
-  (push '("\\.py$" . python-mode) auto-mode-alist))
-
-
-
-;; electric characters
-(defun py-outdent-p ()
-  "Returns non-nil if the current line should dedent one level."
-  (save-excursion
-    (and (progn (back-to-indentation)
-		(looking-at py-outdent-re))
-	 ;; short circuit infloop on illegal construct
-	 (not (bobp))
-	 (progn (forward-line -1)
-		(py-goto-initial-line)
-		(back-to-indentation)
-		(while (or (looking-at py-blank-or-comment-re)
-			   (bobp))
-		  (backward-to-indentation 1))
-		(not (looking-at py-no-outdent-re)))
-	 )))
-
-(defun py-electric-colon (arg)
-  "Insert a colon.
-In certain cases the line is dedented appropriately.  If a numeric
-argument ARG is provided, that many colons are inserted
-non-electrically.  Electric behavior is inhibited inside a string or
-comment."
-  (interactive "*P")
-  (self-insert-command (prefix-numeric-value arg))
-  ;; are we in a string or comment?
-  (if (save-excursion
-	(let ((pps (parse-partial-sexp (save-excursion
-					 (py-beginning-of-def-or-class)
-					 (point))
-				       (point))))
-	  (not (or (nth 3 pps) (nth 4 pps)))))
-      (save-excursion
-	(let ((here (point))
-	      (outdent 0)
-	      (indent (py-compute-indentation t)))
-	  (if (and (not arg)
-		   (py-outdent-p)
-		   (= indent (save-excursion
-			       (py-next-statement -1)
-			       (py-compute-indentation t)))
-		   )
-	      (setq outdent py-indent-offset))
-	  ;; Don't indent, only dedent.  This assumes that any lines
-	  ;; that are already dedented relative to
-	  ;; py-compute-indentation were put there on purpose.  It's
-	  ;; highly annoying to have `:' indent for you.  Use TAB, C-c
-	  ;; C-l or C-c C-r to adjust.  TBD: Is there a better way to
-	  ;; determine this???
-	  (if (< (current-indentation) indent) nil
-	    (goto-char here)
-	    (beginning-of-line)
-	    (delete-horizontal-space)
-	    (indent-to (- indent outdent))
-	    )))))
-
-
-;; Python subprocess utilities and filters
-(defun py-execute-file (proc filename)
-  "Send to Python interpreter process PROC \"exec(open('FILENAME').read())\".
-Make that process's buffer visible and force display.  Also make
-comint believe the user typed this string so that
-`kill-output-from-shell' does The Right Thing."
-  (let ((curbuf (current-buffer))
-	(procbuf (process-buffer proc))
-;	(comint-scroll-to-bottom-on-output t)
-	(msg (format "## working on region in file %s...\n" filename))
-	(cmd (format "exec(open(r'%s').read())\n" filename)))
-    (unwind-protect
-	(save-excursion
-	  (set-buffer procbuf)
-	  (goto-char (point-max))
-	  (move-marker (process-mark proc) (point))
-	  (funcall (process-filter proc) proc msg))
-      (set-buffer curbuf))
-    (process-send-string proc cmd)))
-
-(defun py-comint-output-filter-function (string)
-  "Watch output for Python prompt and exec next file waiting in queue.
-This function is appropriate for `comint-output-filter-functions'."
-  ;;remove ansi terminal escape sequences from string, not sure why they are
-  ;;still around...
-  (setq string (ansi-color-filter-apply string))
-  (when (and (string-match py-shell-input-prompt-1-regexp string)
-                   py-file-queue)
-    (if py-shell-switch-buffers-on-execute
-      (pop-to-buffer (current-buffer)))
-    (py-safe (delete-file (car py-file-queue)))
-    (setq py-file-queue (cdr py-file-queue))
-    (if py-file-queue
-	(let ((pyproc (get-buffer-process (current-buffer))))
-	  (py-execute-file pyproc (car py-file-queue))))
-    ))
-
-(defun py-pdbtrack-overlay-arrow (activation)
-  "Activate or de arrow at beginning-of-line in current buffer."
-  ;; This was derived/simplified from edebug-overlay-arrow
-  (cond (activation
-	 (setq overlay-arrow-position (make-marker))
-	 (setq overlay-arrow-string "=>")
-	 (set-marker overlay-arrow-position (py-point 'bol) (current-buffer))
-	 (setq py-pdbtrack-is-tracking-p t))
-	(overlay-arrow-position
-	 (setq overlay-arrow-position nil)
-	 (setq py-pdbtrack-is-tracking-p nil))
-	))
-
-(defun py-pdbtrack-track-stack-file (text)
-  "Show the file indicated by the pdb stack entry line, in a separate window.
-
-Activity is disabled if the buffer-local variable
-`py-pdbtrack-do-tracking-p' is nil.
-
-We depend on the pdb input prompt matching `py-pdbtrack-input-prompt'
-at the beginning of the line.
-
-If the traceback target file path is invalid, we look for the most
-recently visited python-mode buffer which either has the name of the
-current function \(or class) or which defines the function \(or
-class).  This is to provide for remote scripts, eg, Zope's 'Script
-(Python)' - put a _copy_ of the script in a buffer named for the
-script, and set to python-mode, and pdbtrack will find it.)"
-  ;; Instead of trying to piece things together from partial text
-  ;; (which can be almost useless depending on Emacs version), we
-  ;; monitor to the point where we have the next pdb prompt, and then
-  ;; check all text from comint-last-input-end to process-mark.
-  ;;
-  ;; Also, we're very conservative about clearing the overlay arrow,
-  ;; to minimize residue.  This means, for instance, that executing
-  ;; other pdb commands wipe out the highlight.  You can always do a
-  ;; 'where' (aka 'w') command to reveal the overlay arrow.
-  (let* ((origbuf (current-buffer))
-	 (currproc (get-buffer-process origbuf)))
-
-    (if (not (and currproc py-pdbtrack-do-tracking-p))
-        (py-pdbtrack-overlay-arrow nil)
-
-      (let* ((procmark (process-mark currproc))
-             (block (buffer-substring (max comint-last-input-end
-                                           (- procmark
-                                              py-pdbtrack-track-range))
-                                      procmark))
-             target target_fname target_lineno target_buffer)
-
-        (if (not (string-match (concat py-pdbtrack-input-prompt "$") block))
-            (py-pdbtrack-overlay-arrow nil)
-
-          (setq target (py-pdbtrack-get-source-buffer block))
-
-          (if (stringp target)
-              (message "pdbtrack: %s" target)
-
-            (setq target_lineno (car target))
-            (setq target_buffer (cadr target))
-            (setq target_fname (buffer-file-name target_buffer))
-            (switch-to-buffer-other-window target_buffer)
-            (goto-line target_lineno)
-            (message "pdbtrack: line %s, file %s" target_lineno target_fname)
-            (py-pdbtrack-overlay-arrow t)
-            (pop-to-buffer origbuf t)
-
-            )))))
-  )
-
-(defun py-pdbtrack-get-source-buffer (block)
-  "Return line number and buffer of code indicated by block's traceback text.
-
-We look first to visit the file indicated in the trace.
-
-Failing that, we look for the most recently visited python-mode buffer
-with the same name or having the named function.
-
-If we're unable find the source code we return a string describing the
-problem as best as we can determine."
-
-  (if (not (string-match py-pdbtrack-stack-entry-regexp block))
-
-      "Traceback cue not found"
-
-    (let* ((filename (match-string 1 block))
-           (lineno (string-to-int (match-string 2 block)))
-           (funcname (match-string 3 block))
-           funcbuffer)
-
-      (cond ((file-exists-p filename)
-             (list lineno (find-file-noselect filename)))
-
-            ((setq funcbuffer (py-pdbtrack-grub-for-buffer funcname lineno))
-             (if (string-match "/Script (Python)$" filename)
-                 ;; Add in number of lines for leading '##' comments:
-                 (setq lineno
-                       (+ lineno
-                          (save-excursion
-                            (set-buffer funcbuffer)
-                            (count-lines
-                             (point-min)
-                             (max (point-min)
-                                  (string-match "^\\([^#]\\|#[^#]\\|#$\\)"
-                                                (buffer-substring (point-min)
-                                                                  (point-max)))
-                                  ))))))
-             (list lineno funcbuffer))
-
-            ((= (elt filename 0) ?\<)
-             (format "(Non-file source: '%s')" filename))
-
-            (t (format "Not found: %s(), %s" funcname filename)))
-      )
-    )
-  )
-
-(defun py-pdbtrack-grub-for-buffer (funcname lineno)
-  "Find most recent buffer itself named or having function funcname.
-
-We walk the buffer-list history for python-mode buffers that are
-named for funcname or define a function funcname."
-  (let ((buffers (buffer-list))
-        buf
-        got)
-    (while (and buffers (not got))
-      (setq buf (car buffers)
-            buffers (cdr buffers))
-      (if (and (save-excursion (set-buffer buf)
-                               (string= major-mode "python-mode"))
-               (or (string-match funcname (buffer-name buf))
-                   (string-match (concat "^\\s-*\\(def\\|class\\)\\s-+"
-                                         funcname "\\s-*(")
-                                 (save-excursion
-                                   (set-buffer buf)
-                                   (buffer-substring (point-min)
-                                                     (point-max))))))
-          (setq got buf)))
-    got))
-
-(defun py-postprocess-output-buffer (buf)
-  "Highlight exceptions found in BUF.
-If an exception occurred return t, otherwise return nil.  BUF must exist."
-  (let (line file bol err-p)
-    (save-excursion
-      (set-buffer buf)
-      (beginning-of-buffer)
-      (while (re-search-forward py-traceback-line-re nil t)
-	(setq file (match-string 1)
-	      line (string-to-int (match-string 2))
-	      bol (py-point 'bol))
-	(py-highlight-line bol (py-point 'eol) file line)))
-    (when (and py-jump-on-exception line)
-      (beep)
-      (py-jump-to-exception file line)
-      (setq err-p t))
-    err-p))
-
-
-
-;;; Subprocess commands
-
-;; only used when (memq 'broken-temp-names py-emacs-features)
-(defvar py-serial-number 0)
-(defvar py-exception-buffer nil)
-(defconst py-output-buffer "*Python Output*")
-(make-variable-buffer-local 'py-output-buffer)
-
-;; for toggling between CPython and Jython
-(defvar py-which-shell nil)
-(defvar py-which-args  py-python-command-args)
-(defvar py-which-bufname "Python")
-(make-variable-buffer-local 'py-which-shell)
-(make-variable-buffer-local 'py-which-args)
-(make-variable-buffer-local 'py-which-bufname)
-
-(defun py-toggle-shells (arg)
-  "Toggles between the CPython and Jython shells.
-
-With positive argument ARG (interactively \\[universal-argument]),
-uses the CPython shell, with negative ARG uses the Jython shell, and
-with a zero argument, toggles the shell.
-
-Programmatically, ARG can also be one of the symbols `cpython' or
-`jython', equivalent to positive arg and negative arg respectively."
-  (interactive "P")
-  ;; default is to toggle
-  (if (null arg)
-      (setq arg 0))
-  ;; preprocess arg
-  (cond
-   ((equal arg 0)
-    ;; toggle
-    (if (string-equal py-which-bufname "Python")
-	(setq arg -1)
-      (setq arg 1)))
-   ((equal arg 'cpython) (setq arg 1))
-   ((equal arg 'jython) (setq arg -1)))
-  (let (msg)
-    (cond
-     ((< 0 arg)
-      ;; set to CPython
-      (setq py-which-shell py-python-command
-	    py-which-args py-python-command-args
-	    py-which-bufname "Python"
-	    msg "CPython")
-      (if (string-equal py-which-bufname "Jython")
-	  (setq mode-name "Python")))
-     ((> 0 arg)
-      (setq py-which-shell py-jython-command
-	    py-which-args py-jython-command-args
-	    py-which-bufname "Jython"
-	    msg "Jython")
-      (if (string-equal py-which-bufname "Python")
-	  (setq mode-name "Jython")))
-     )
-    (message "Using the %s shell" msg)
-    (setq py-output-buffer (format "*%s Output*" py-which-bufname))))
-
-;;;###autoload
-(defun py-shell (&optional argprompt)
-  "Start an interactive Python interpreter in another window.
-This is like Shell mode, except that Python is running in the window
-instead of a shell.  See the `Interactive Shell' and `Shell Mode'
-sections of the Emacs manual for details, especially for the key
-bindings active in the `*Python*' buffer.
-
-With optional \\[universal-argument], the user is prompted for the
-flags to pass to the Python interpreter.  This has no effect when this
-command is used to switch to an existing process, only when a new
-process is started.  If you use this, you will probably want to ensure
-that the current arguments are retained (they will be included in the
-prompt).  This argument is ignored when this function is called
-programmatically, or when running in Emacs 19.34 or older.
-
-Note: You can toggle between using the CPython interpreter and the
-Jython interpreter by hitting \\[py-toggle-shells].  This toggles
-buffer local variables which control whether all your subshell
-interactions happen to the `*Jython*' or `*Python*' buffers (the
-latter is the name used for the CPython buffer).
-
-Warning: Don't use an interactive Python if you change sys.ps1 or
-sys.ps2 from their default values, or if you're running code that
-prints `>>> ' or `... ' at the start of a line.  `python-mode' can't
-distinguish your output from Python's output, and assumes that `>>> '
-at the start of a line is a prompt from Python.  Similarly, the Emacs
-Shell mode code assumes that both `>>> ' and `... ' at the start of a
-line are Python prompts.  Bad things can happen if you fool either
-mode.
-
-Warning:  If you do any editing *in* the process buffer *while* the
-buffer is accepting output from Python, do NOT attempt to `undo' the
-changes.  Some of the output (nowhere near the parts you changed!) may
-be lost if you do.  This appears to be an Emacs bug, an unfortunate
-interaction between undo and process filters; the same problem exists in
-non-Python process buffers using the default (Emacs-supplied) process
-filter."
-  (interactive "P")
-  ;; Set the default shell if not already set
-  (when (null py-which-shell)
-    (py-toggle-shells py-default-interpreter))
-  (let ((args py-which-args))
-    (when (and argprompt
-	       (interactive-p)
-	       (fboundp 'split-string))
-      ;; TBD: Perhaps force "-i" in the final list?
-      (setq args (split-string
-		  (read-string (concat py-which-bufname
-				       " arguments: ")
-			       (concat
-				(mapconcat 'identity py-which-args " ") " ")
-			       ))))
-    (if (not (equal (buffer-name) "*Python*"))
-        (switch-to-buffer-other-window
-         (apply 'make-comint py-which-bufname py-which-shell nil args))
-      (apply 'make-comint py-which-bufname py-which-shell nil args))
-    (make-local-variable 'comint-prompt-regexp)
-    (setq comint-prompt-regexp (concat py-shell-input-prompt-1-regexp "\\|"
-                                       py-shell-input-prompt-2-regexp "\\|"
-                                       "^([Pp]db) "))
-    (add-hook 'comint-output-filter-functions
-	      'py-comint-output-filter-function)
-    ;; pdbtrack
-    (add-hook 'comint-output-filter-functions 'py-pdbtrack-track-stack-file)
-    (setq py-pdbtrack-do-tracking-p t)
-    (set-syntax-table py-mode-syntax-table)
-    (use-local-map py-shell-map)
-    (run-hooks 'py-shell-hook)
-    ))
-
-(defun py-clear-queue ()
-  "Clear the queue of temporary files waiting to execute."
-  (interactive)
-  (let ((n (length py-file-queue)))
-    (mapcar 'delete-file py-file-queue)
-    (setq py-file-queue nil)
-    (message "%d pending files de-queued." n)))
-
-
-(defun py-execute-region (start end &optional async)
-  "Execute the region in a Python interpreter.
-
-The region is first copied into a temporary file (in the directory
-`py-temp-directory').  If there is no Python interpreter shell
-running, this file is executed synchronously using
-`shell-command-on-region'.  If the program is long running, use
-\\[universal-argument] to run the command asynchronously in its own
-buffer.
-
-When this function is used programmatically, arguments START and END
-specify the region to execute, and optional third argument ASYNC, if
-non-nil, specifies to run the command asynchronously in its own
-buffer.
-
-If the Python interpreter shell is running, the region is exec()'d
-in that shell.  If you try to execute regions too quickly,
-`python-mode' will queue them up and execute them one at a time when
-it sees a `>>> ' prompt from Python.  Each time this happens, the
-process buffer is popped into a window (if it's not already in some
-window) so you can see it, and a comment of the form
-
-    \t## working on region in file <name>...
-
-is inserted at the end.  See also the command `py-clear-queue'."
-  (interactive "r\nP")
-  ;; Skip ahead to the first non-blank line
-  (let* ((proc (get-process py-which-bufname))
-	 (temp (if (memq 'broken-temp-names py-emacs-features)
-		   (let
-		       ((sn py-serial-number)
-			(pid (and (fboundp 'emacs-pid) (emacs-pid))))
-		     (setq py-serial-number (1+ py-serial-number))
-		     (if pid
-			 (format "python-%d-%d" sn pid)
-		       (format "python-%d" sn)))
-		 (make-temp-name "python-")))
-	 (file (concat (expand-file-name temp py-temp-directory) ".py"))
-	 (cur (current-buffer))
-	 (buf (get-buffer-create file))
-	 shell)
-    ;; Write the contents of the buffer, watching out for indented regions.
-    (save-excursion
-      (goto-char start)
-      (beginning-of-line)
-      (while (and (looking-at "\\s *$")
-		  (< (point) end))
-	(forward-line 1))
-      (setq start (point))
-      (or (< start end)
-	  (error "Region is empty"))
-      (setq py-line-number-offset (count-lines 1 start))
-      (let ((needs-if (/= (py-point 'bol) (py-point 'boi))))
-	(set-buffer buf)
-	(python-mode)
-	(when needs-if
-	  (insert "if 1:\n")
-	  (setq py-line-number-offset (- py-line-number-offset 1)))
-	(insert-buffer-substring cur start end)
-	;; Set the shell either to the #! line command, or to the
-	;; py-which-shell buffer local variable.
-	(setq shell (or (py-choose-shell-by-shebang)
-			(py-choose-shell-by-import)
-			py-which-shell))))
-    (cond
-     ;; always run the code in its own asynchronous subprocess
-     (async
-      ;; User explicitly wants this to run in its own async subprocess
-      (save-excursion
-	(set-buffer buf)
-	(write-region (point-min) (point-max) file nil 'nomsg))
-      (let* ((buf (generate-new-buffer-name py-output-buffer))
-	     ;; TBD: a horrible hack, but why create new Custom variables?
-	     (arg (if (string-equal py-which-bufname "Python")
-		      "-u" "")))
-	(start-process py-which-bufname buf shell arg file)
-	(pop-to-buffer buf)
-	(py-postprocess-output-buffer buf)
-	;; TBD: clean up the temporary file!
-	))
-     ;; if the Python interpreter shell is running, queue it up for
-     ;; execution there.
-     (proc
-      ;; use the existing python shell
-      (save-excursion
-	(set-buffer buf)
-	(write-region (point-min) (point-max) file nil 'nomsg))
-      (if (not py-file-queue)
-	  (py-execute-file proc file)
-	(message "File %s queued for execution" file))
-      (setq py-file-queue (append py-file-queue (list file)))
-      (setq py-exception-buffer (cons file (current-buffer))))
-     (t
-      ;; TBD: a horrible hack, but why create new Custom variables?
-      (let ((cmd (concat py-which-shell (if (string-equal py-which-bufname
-							  "Jython")
-					    " -" ""))))
-	;; otherwise either run it synchronously in a subprocess
-	(save-excursion
-	  (set-buffer buf)
-	  (shell-command-on-region (point-min) (point-max)
-				   cmd py-output-buffer))
-	;; shell-command-on-region kills the output buffer if it never
-	;; existed and there's no output from the command
-	(if (not (get-buffer py-output-buffer))
-	    (message "No output.")
-	  (setq py-exception-buffer (current-buffer))
-	  (let ((err-p (py-postprocess-output-buffer py-output-buffer)))
-	    (pop-to-buffer py-output-buffer)
-	    (if err-p
-		(pop-to-buffer py-exception-buffer)))
-	  ))
-      ))
-    ;; Clean up after ourselves.
-    (kill-buffer buf)))
-
-
-;; Code execution commands
-(defun py-execute-buffer (&optional async)
-  "Send the contents of the buffer to a Python interpreter.
-If the file local variable `py-master-file' is non-nil, execute the
-named file instead of the buffer's file.
-
-If there is a *Python* process buffer it is used.  If a clipping
-restriction is in effect, only the accessible portion of the buffer is
-sent.  A trailing newline will be supplied if needed.
-
-See the `\\[py-execute-region]' docs for an account of some
-subtleties, including the use of the optional ASYNC argument."
-  (interactive "P")
-  (let ((old-buffer (current-buffer)))
-    (if py-master-file
-        (let* ((filename (expand-file-name py-master-file))
-               (buffer (or (get-file-buffer filename)
-                           (find-file-noselect filename))))
-          (set-buffer buffer)))
-    (py-execute-region (point-min) (point-max) async)
-       (pop-to-buffer old-buffer)))
-
-(defun py-execute-import-or-reload (&optional async)
-  "Import the current buffer's file in a Python interpreter.
-
-If the file has already been imported, then do reload instead to get
-the latest version.
-
-If the file's name does not end in \".py\", then do exec instead.
-
-If the current buffer is not visiting a file, do `py-execute-buffer'
-instead.
-
-If the file local variable `py-master-file' is non-nil, import or
-reload the named file instead of the buffer's file.  The file may be
-saved based on the value of `py-execute-import-or-reload-save-p'.
-
-See the `\\[py-execute-region]' docs for an account of some
-subtleties, including the use of the optional ASYNC argument.
-
-This may be preferable to `\\[py-execute-buffer]' because:
-
- - Definitions stay in their module rather than appearing at top
-   level, where they would clutter the global namespace and not affect
-   uses of qualified names (MODULE.NAME).
-
- - The Python debugger gets line number information about the functions."
-  (interactive "P")
-  ;; Check file local variable py-master-file
-  (if py-master-file
-      (let* ((filename (expand-file-name py-master-file))
-             (buffer (or (get-file-buffer filename)
-                         (find-file-noselect filename))))
-        (set-buffer buffer)))
-  (let ((file (buffer-file-name (current-buffer))))
-    (if file
-        (progn
-	  ;; Maybe save some buffers
-	  (save-some-buffers (not py-ask-about-save) nil)
-          (py-execute-string
-           (if (string-match "\\.py$" file)
-               (let ((f (file-name-sans-extension
-			 (file-name-nondirectory file))))
-                 (format "if globals().has_key('%s'):\n    reload(%s)\nelse:\n    import %s\n"
-                         f f f))
-             (format "exec(open(r'%s'))\n" file))
-           async))
-      ;; else
-      (py-execute-buffer async))))
-
-
-(defun py-execute-def-or-class (&optional async)
-  "Send the current function or class definition to a Python interpreter.
-
-If there is a *Python* process buffer it is used.
-
-See the `\\[py-execute-region]' docs for an account of some
-subtleties, including the use of the optional ASYNC argument."
-  (interactive "P")
-  (save-excursion
-    (py-mark-def-or-class)
-    ;; mark is before point
-    (py-execute-region (mark) (point) async)))
-
-
-(defun py-execute-string (string &optional async)
-  "Send the argument STRING to a Python interpreter.
-
-If there is a *Python* process buffer it is used.
-
-See the `\\[py-execute-region]' docs for an account of some
-subtleties, including the use of the optional ASYNC argument."
-  (interactive "sExecute Python command: ")
-  (save-excursion
-    (set-buffer (get-buffer-create
-                 (generate-new-buffer-name " *Python Command*")))
-    (insert string)
-    (py-execute-region (point-min) (point-max) async)))
-
-
-
-(defun py-jump-to-exception (file line)
-  "Jump to the Python code in FILE at LINE."
-  (let ((buffer (cond ((string-equal file "<stdin>")
-		       (if (consp py-exception-buffer)
-			   (cdr py-exception-buffer)
-			 py-exception-buffer))
-		      ((and (consp py-exception-buffer)
-			    (string-equal file (car py-exception-buffer)))
-		       (cdr py-exception-buffer))
-		      ((py-safe (find-file-noselect file)))
-		      ;; could not figure out what file the exception
-		      ;; is pointing to, so prompt for it
-		      (t (find-file (read-file-name "Exception file: "
-						    nil
-						    file t))))))
-    ;; Fiddle about with line number
-    (setq line (+ py-line-number-offset line))
-
-    (pop-to-buffer buffer)
-    ;; Force Python mode
-    (if (not (eq major-mode 'python-mode))
-	(python-mode))
-    (goto-line line)
-    (message "Jumping to exception in file %s on line %d" file line)))
-
-(defun py-mouseto-exception (event)
-  "Jump to the code which caused the Python exception at EVENT.
-EVENT is usually a mouse click."
-  (interactive "e")
-  (cond
-   ((fboundp 'event-point)
-    ;; XEmacs
-    (let* ((point (event-point event))
-	   (buffer (event-buffer event))
-	   (e (and point buffer (extent-at point buffer 'py-exc-info)))
-	   (info (and e (extent-property e 'py-exc-info))))
-      (message "Event point: %d, info: %s" point info)
-      (and info
-	   (py-jump-to-exception (car info) (cdr info)))
-      ))
-   ;; Emacs -- Please port this!
-   ))
-
-(defun py-goto-exception ()
-  "Go to the line indicated by the traceback."
-  (interactive)
-  (let (file line)
-    (save-excursion
-      (beginning-of-line)
-      (if (looking-at py-traceback-line-re)
-	  (setq file (match-string 1)
-		line (string-to-int (match-string 2)))))
-    (if (not file)
-	(error "Not on a traceback line"))
-    (py-jump-to-exception file line)))
-
-(defun py-find-next-exception (start buffer searchdir errwhere)
-  "Find the next Python exception and jump to the code that caused it.
-START is the buffer position in BUFFER from which to begin searching
-for an exception.  SEARCHDIR is a function, either
-`re-search-backward' or `re-search-forward' indicating the direction
-to search.  ERRWHERE is used in an error message if the limit (top or
-bottom) of the trackback stack is encountered."
-  (let (file line)
-    (save-excursion
-      (set-buffer buffer)
-      (goto-char (py-point start))
-      (if (funcall searchdir py-traceback-line-re nil t)
-	  (setq file (match-string 1)
-		line (string-to-int (match-string 2)))))
-    (if (and file line)
-	(py-jump-to-exception file line)
-      (error "%s of traceback" errwhere))))
-
-(defun py-down-exception (&optional bottom)
-  "Go to the next line down in the traceback.
-With \\[univeral-argument] (programmatically, optional argument
-BOTTOM), jump to the bottom (innermost) exception in the exception
-stack."
-  (interactive "P")
-  (let* ((proc (get-process "Python"))
-	 (buffer (if proc "*Python*" py-output-buffer)))
-    (if bottom
-	(py-find-next-exception 'eob buffer 're-search-backward "Bottom")
-      (py-find-next-exception 'eol buffer 're-search-forward "Bottom"))))
-
-(defun py-up-exception (&optional top)
-  "Go to the previous line up in the traceback.
-With \\[universal-argument] (programmatically, optional argument TOP)
-jump to the top (outermost) exception in the exception stack."
-  (interactive "P")
-  (let* ((proc (get-process "Python"))
-	 (buffer (if proc "*Python*" py-output-buffer)))
-    (if top
-	(py-find-next-exception 'bob buffer 're-search-forward "Top")
-      (py-find-next-exception 'bol buffer 're-search-backward "Top"))))
-
-
-;; Electric deletion
-(defun py-electric-backspace (arg)
-  "Delete preceding character or levels of indentation.
-Deletion is performed by calling the function in `py-backspace-function'
-with a single argument (the number of characters to delete).
-
-If point is at the leftmost column, delete the preceding newline.
-
-Otherwise, if point is at the leftmost non-whitespace character of a
-line that is neither a continuation line nor a non-indenting comment
-line, or if point is at the end of a blank line, this command reduces
-the indentation to match that of the line that opened the current
-block of code.  The line that opened the block is displayed in the
-echo area to help you keep track of where you are.  With
-\\[universal-argument] dedents that many blocks (but not past column
-zero).
-
-Otherwise the preceding character is deleted, converting a tab to
-spaces if needed so that only a single column position is deleted.
-\\[universal-argument] specifies how many characters to delete;
-default is 1.
-
-When used programmatically, argument ARG specifies the number of
-blocks to dedent, or the number of characters to delete, as indicated
-above."
-  (interactive "*p")
-  (if (or (/= (current-indentation) (current-column))
-	  (bolp)
-	  (py-continuation-line-p)
-;	  (not py-honor-comment-indentation)
-;	  (looking-at "#[^ \t\n]")	; non-indenting #
-	  )
-      (funcall py-backspace-function arg)
-    ;; else indent the same as the colon line that opened the block
-    ;; force non-blank so py-goto-block-up doesn't ignore it
-    (insert-char ?* 1)
-    (backward-char)
-    (let ((base-indent 0)		; indentation of base line
-	  (base-text "")		; and text of base line
-	  (base-found-p nil))
-      (save-excursion
-	(while (< 0 arg)
-	  (condition-case nil		; in case no enclosing block
-	      (progn
-		(py-goto-block-up 'no-mark)
-		(setq base-indent (current-indentation)
-		      base-text   (py-suck-up-leading-text)
-		      base-found-p t))
-	    (error nil))
-	  (setq arg (1- arg))))
-      (delete-char 1)			; toss the dummy character
-      (delete-horizontal-space)
-      (indent-to base-indent)
-      (if base-found-p
-	  (message "Closes block: %s" base-text)))))
-
-
-(defun py-electric-delete (arg)
-  "Delete preceding or following character or levels of whitespace.
-
-The behavior of this function depends on the variable
-`delete-key-deletes-forward'.  If this variable is nil (or does not
-exist, as in older Emacsen and non-XEmacs versions), then this
-function behaves identically to \\[c-electric-backspace].
-
-If `delete-key-deletes-forward' is non-nil and is supported in your
-Emacs, then deletion occurs in the forward direction, by calling the
-function in `py-delete-function'.
-
-\\[universal-argument] (programmatically, argument ARG) specifies the
-number of characters to delete (default is 1)."
-  (interactive "*p")
-  (if (or (and (fboundp 'delete-forward-p) ;XEmacs 21
-	       (delete-forward-p))
-	  (and (boundp 'delete-key-deletes-forward) ;XEmacs 20
-	       delete-key-deletes-forward))
-      (funcall py-delete-function arg)
-    (py-electric-backspace arg)))
-
-;; required for pending-del and delsel modes
-(put 'py-electric-colon 'delete-selection t) ;delsel
-(put 'py-electric-colon 'pending-delete   t) ;pending-del
-(put 'py-electric-backspace 'delete-selection 'supersede) ;delsel
-(put 'py-electric-backspace 'pending-delete   'supersede) ;pending-del
-(put 'py-electric-delete    'delete-selection 'supersede) ;delsel
-(put 'py-electric-delete    'pending-delete   'supersede) ;pending-del
-
-
-
-(defun py-indent-line (&optional arg)
-  "Fix the indentation of the current line according to Python rules.
-With \\[universal-argument] (programmatically, the optional argument
-ARG non-nil), ignore dedenting rules for block closing statements
-(e.g. return, raise, break, continue, pass)
-
-This function is normally bound to `indent-line-function' so
-\\[indent-for-tab-command] will call it."
-  (interactive "P")
-  (let* ((ci (current-indentation))
-	 (move-to-indentation-p (<= (current-column) ci))
-	 (need (py-compute-indentation (not arg)))
-         (cc (current-column)))
-    ;; dedent out a level if previous command was the same unless we're in
-    ;; column 1
-    (if (and (equal last-command this-command)
-             (/= cc 0))
-        (progn
-          (beginning-of-line)
-          (delete-horizontal-space)
-          (indent-to (* (/ (- cc 1) py-indent-offset) py-indent-offset)))
-      (progn
-	;; see if we need to dedent
-	(if (py-outdent-p)
-	    (setq need (- need py-indent-offset)))
-	(if (or py-tab-always-indent
-		move-to-indentation-p)
-	    (progn (if (/= ci need)
-		       (save-excursion
-		       (beginning-of-line)
-		       (delete-horizontal-space)
-		       (indent-to need)))
-		   (if move-to-indentation-p (back-to-indentation)))
-	    (insert-tab))))))
-
-(defun py-newline-and-indent ()
-  "Strives to act like the Emacs `newline-and-indent'.
-This is just `strives to' because correct indentation can't be computed
-from scratch for Python code.  In general, deletes the whitespace before
-point, inserts a newline, and takes an educated guess as to how you want
-the new line indented."
-  (interactive)
-  (let ((ci (current-indentation)))
-    (if (< ci (current-column))		; if point beyond indentation
-	(newline-and-indent)
-      ;; else try to act like newline-and-indent "normally" acts
-      (beginning-of-line)
-      (insert-char ?\n 1)
-      (move-to-column ci))))
-
-(defun py-compute-indentation (honor-block-close-p)
-  "Compute Python indentation.
-When HONOR-BLOCK-CLOSE-P is non-nil, statements such as `return',
-`raise', `break', `continue', and `pass' force one level of
-dedenting."
-  (save-excursion
-    (beginning-of-line)
-    (let* ((bod (py-point 'bod))
-	   (pps (parse-partial-sexp bod (point)))
-	   (boipps (parse-partial-sexp bod (py-point 'boi)))
-	   placeholder)
-      (cond
-       ;; are we inside a multi-line string or comment?
-       ((or (and (nth 3 pps) (nth 3 boipps))
-	    (and (nth 4 pps) (nth 4 boipps)))
-	(save-excursion
-	  (if (not py-align-multiline-strings-p) 0
-	    ;; skip back over blank & non-indenting comment lines
-	    ;; note: will skip a blank or non-indenting comment line
-	    ;; that happens to be a continuation line too
-	    (re-search-backward "^[ \t]*\\([^ \t\n#]\\|#[ \t\n]\\)" nil 'move)
-	    (back-to-indentation)
-	    (current-column))))
-       ;; are we on a continuation line?
-       ((py-continuation-line-p)
-	(let ((startpos (point))
-	      (open-bracket-pos (py-nesting-level))
-	      endpos searching found state cind cline)
-	  (if open-bracket-pos
-	      (progn
-		(setq endpos (py-point 'bol))
-		(py-goto-initial-line)
-		(setq cind (current-indentation))
-		(setq cline cind)
-		(dolist (bp 
-			 (nth 9 (save-excursion
-				  (parse-partial-sexp (point) endpos)))
-			 cind)
-		  (if (search-forward "\n" bp t) (setq cline cind))
-		  (goto-char (1+ bp))
-		  (skip-chars-forward " \t")
-		  (setq cind (if (memq (following-char) '(?\n ?# ?\\))
-				 (+ cline py-indent-offset)
-			       (current-column)))))
-	    ;; else on backslash continuation line
-	    (forward-line -1)
-	    (if (py-continuation-line-p) ; on at least 3rd line in block
-		(current-indentation)	; so just continue the pattern
-	      ;; else started on 2nd line in block, so indent more.
-	      ;; if base line is an assignment with a start on a RHS,
-	      ;; indent to 2 beyond the leftmost "="; else skip first
-	      ;; chunk of non-whitespace characters on base line, + 1 more
-	      ;; column
-	      (end-of-line)
-	      (setq endpos (point)
-		    searching t)
-	      (back-to-indentation)
-	      (setq startpos (point))
-	      ;; look at all "=" from left to right, stopping at first
-	      ;; one not nested in a list or string
-	      (while searching
-		(skip-chars-forward "^=" endpos)
-		(if (= (point) endpos)
-		    (setq searching nil)
-		  (forward-char 1)
-		  (setq state (parse-partial-sexp startpos (point)))
-		  (if (and (zerop (car state)) ; not in a bracket
-			   (null (nth 3 state))) ; & not in a string
-		      (progn
-			(setq searching nil) ; done searching in any case
-			(setq found
-			      (not (or
-				    (eq (following-char) ?=)
-				    (memq (char-after (- (point) 2))
-					  '(?< ?> ?!)))))))))
-	      (if (or (not found)	; not an assignment
-		      (looking-at "[ \t]*\\\\")) ; <=><spaces><backslash>
-		  (progn
-		    (goto-char startpos)
-		    (skip-chars-forward "^ \t\n")))
-	      ;; if this is a continuation for a block opening
-	      ;; statement, add some extra offset.
-	      (+ (current-column) (if (py-statement-opens-block-p)
-				      py-continuation-offset 0)
-		 1)
-	      ))))
-
-       ;; not on a continuation line
-       ((bobp) (current-indentation))
-
-       ;; Dfn: "Indenting comment line".  A line containing only a
-       ;; comment, but which is treated like a statement for
-       ;; indentation calculation purposes.  Such lines are only
-       ;; treated specially by the mode; they are not treated
-       ;; specially by the Python interpreter.
-
-       ;; The rules for indenting comment lines are a line where:
-       ;;   - the first non-whitespace character is `#', and
-       ;;   - the character following the `#' is whitespace, and
-       ;;   - the line is dedented with respect to (i.e. to the left
-       ;;     of) the indentation of the preceding non-blank line.
-
-       ;; The first non-blank line following an indenting comment
-       ;; line is given the same amount of indentation as the
-       ;; indenting comment line.
-
-       ;; All other comment-only lines are ignored for indentation
-       ;; purposes.
-
-       ;; Are we looking at a comment-only line which is *not* an
-       ;; indenting comment line?  If so, we assume that it's been
-       ;; placed at the desired indentation, so leave it alone.
-       ;; Indenting comment lines are aligned as statements down
-       ;; below.
-       ((and (looking-at "[ \t]*#[^ \t\n]")
-	     ;; NOTE: this test will not be performed in older Emacsen
-	     (fboundp 'forward-comment)
-	     (<= (current-indentation)
-		 (save-excursion
-		   (forward-comment (- (point-max)))
-		   (current-indentation))))
-	(current-indentation))
-
-       ;; else indentation based on that of the statement that
-       ;; precedes us; use the first line of that statement to
-       ;; establish the base, in case the user forced a non-std
-       ;; indentation for the continuation lines (if any)
-       (t
-	;; skip back over blank & non-indenting comment lines note:
-	;; will skip a blank or non-indenting comment line that
-	;; happens to be a continuation line too.  use fast Emacs 19
-	;; function if it's there.
-	(if (and (eq py-honor-comment-indentation nil)
-		 (fboundp 'forward-comment))
-	    (forward-comment (- (point-max)))
-	  (let ((prefix-re (concat py-block-comment-prefix "[ \t]*"))
-		done)
-	    (while (not done)
-	      (re-search-backward "^[ \t]*\\([^ \t\n#]\\|#\\)" nil 'move)
-	      (setq done (or (bobp)
-			     (and (eq py-honor-comment-indentation t)
-				  (save-excursion
-				    (back-to-indentation)
-				    (not (looking-at prefix-re))
-				    ))
-			     (and (not (eq py-honor-comment-indentation t))
-				  (save-excursion
-				    (back-to-indentation)
-				    (and (not (looking-at prefix-re))
-					 (or (looking-at "[^#]")
-					     (not (zerop (current-column)))
-					     ))
-				    ))
-			     ))
-	      )))
-	;; if we landed inside a string, go to the beginning of that
-	;; string. this handles triple quoted, multi-line spanning
-	;; strings.
-	(py-goto-beginning-of-tqs (nth 3 (parse-partial-sexp bod (point))))
-	;; now skip backward over continued lines
-	(setq placeholder (point))
-	(py-goto-initial-line)
-	;; we may *now* have landed in a TQS, so find the beginning of
-	;; this string.
-	(py-goto-beginning-of-tqs
-	 (save-excursion (nth 3 (parse-partial-sexp
-				 placeholder (point)))))
-	(+ (current-indentation)
-	   (if (py-statement-opens-block-p)
-	       py-indent-offset
-	     (if (and honor-block-close-p (py-statement-closes-block-p))
-		 (- py-indent-offset)
-	       0)))
-	)))))
-
-(defun py-guess-indent-offset (&optional global)
-  "Guess a good value for, and change, `py-indent-offset'.
-
-By default, make a buffer-local copy of `py-indent-offset' with the
-new value, so that other Python buffers are not affected.  With
-\\[universal-argument] (programmatically, optional argument GLOBAL),
-change the global value of `py-indent-offset'.  This affects all
-Python buffers (that don't have their own buffer-local copy), both
-those currently existing and those created later in the Emacs session.
-
-Some people use a different value for `py-indent-offset' than you use.
-There's no excuse for such foolishness, but sometimes you have to deal
-with their ugly code anyway.  This function examines the file and sets
-`py-indent-offset' to what it thinks it was when they created the
-mess.
-
-Specifically, it searches forward from the statement containing point,
-looking for a line that opens a block of code.  `py-indent-offset' is
-set to the difference in indentation between that line and the Python
-statement following it.  If the search doesn't succeed going forward,
-it's tried again going backward."
-  (interactive "P")			; raw prefix arg
-  (let (new-value
-	(start (point))
-	(restart (point))
-	(found nil)
-	colon-indent)
-    (py-goto-initial-line)
-    (while (not (or found (eobp)))
-      (when (and (re-search-forward ":[ \t]*\\($\\|[#\\]\\)" nil 'move)
-		 (not (py-in-literal restart)))
-	(setq restart (point))
-	(py-goto-initial-line)
-	(if (py-statement-opens-block-p)
-	    (setq found t)
-	  (goto-char restart))))
-    (unless found
-      (goto-char start)
-      (py-goto-initial-line)
-      (while (not (or found (bobp)))
-	(setq found (and
-		     (re-search-backward ":[ \t]*\\($\\|[#\\]\\)" nil 'move)
-		     (or (py-goto-initial-line) t) ; always true -- side effect
-		     (py-statement-opens-block-p)))))
-    (setq colon-indent (current-indentation)
-	  found (and found (zerop (py-next-statement 1)))
-	  new-value (- (current-indentation) colon-indent))
-    (goto-char start)
-    (if (not found)
-	(error "Sorry, couldn't guess a value for py-indent-offset")
-      (funcall (if global 'kill-local-variable 'make-local-variable)
-	       'py-indent-offset)
-      (setq py-indent-offset new-value)
-      (or noninteractive
-	  (message "%s value of py-indent-offset set to %d"
-		   (if global "Global" "Local")
-		   py-indent-offset)))
-    ))
-
-(defun py-comment-indent-function ()
-  "Python version of `comment-indent-function'."
-  ;; This is required when filladapt is turned off.  Without it, when
-  ;; filladapt is not used, comments which start in column zero
-  ;; cascade one character to the right
-  (save-excursion
-    (beginning-of-line)
-    (let ((eol (py-point 'eol)))
-      (and comment-start-skip
-	   (re-search-forward comment-start-skip eol t)
-	   (setq eol (match-beginning 0)))
-      (goto-char eol)
-      (skip-chars-backward " \t")
-      (max comment-column (+ (current-column) (if (bolp) 0 1)))
-      )))
-
-(defun py-narrow-to-defun (&optional class)
-  "Make text outside current defun invisible.
-The defun visible is the one that contains point or follows point.
-Optional CLASS is passed directly to `py-beginning-of-def-or-class'."
-  (interactive "P")
-  (save-excursion
-    (widen)
-    (py-end-of-def-or-class class)
-    (let ((end (point)))
-      (py-beginning-of-def-or-class class)
-      (narrow-to-region (point) end))))
-
-
-(defun py-shift-region (start end count)
-  "Indent lines from START to END by COUNT spaces."
-  (save-excursion
-    (goto-char end)
-    (beginning-of-line)
-    (setq end (point))
-    (goto-char start)
-    (beginning-of-line)
-    (setq start (point))
-    (indent-rigidly start end count)))
-
-(defun py-shift-region-left (start end &optional count)
-  "Shift region of Python code to the left.
-The lines from the line containing the start of the current region up
-to (but not including) the line containing the end of the region are
-shifted to the left, by `py-indent-offset' columns.
-
-If a prefix argument is given, the region is instead shifted by that
-many columns.  With no active region, dedent only the current line.
-You cannot dedent the region if any line is already at column zero."
-  (interactive
-   (let ((p (point))
-	 (m (mark))
-	 (arg current-prefix-arg))
-     (if m
-	 (list (min p m) (max p m) arg)
-       (list p (save-excursion (forward-line 1) (point)) arg))))
-  ;; if any line is at column zero, don't shift the region
-  (save-excursion
-    (goto-char start)
-    (while (< (point) end)
-      (back-to-indentation)
-      (if (and (zerop (current-column))
-	       (not (looking-at "\\s *$")))
-	  (error "Region is at left edge"))
-      (forward-line 1)))
-  (py-shift-region start end (- (prefix-numeric-value
-				 (or count py-indent-offset))))
-  (py-keep-region-active))
-
-(defun py-shift-region-right (start end &optional count)
-  "Shift region of Python code to the right.
-The lines from the line containing the start of the current region up
-to (but not including) the line containing the end of the region are
-shifted to the right, by `py-indent-offset' columns.
-
-If a prefix argument is given, the region is instead shifted by that
-many columns.  With no active region, indent only the current line."
-  (interactive
-   (let ((p (point))
-	 (m (mark))
-	 (arg current-prefix-arg))
-     (if m
-	 (list (min p m) (max p m) arg)
-       (list p (save-excursion (forward-line 1) (point)) arg))))
-  (py-shift-region start end (prefix-numeric-value
-			      (or count py-indent-offset)))
-  (py-keep-region-active))
-
-(defun py-indent-region (start end &optional indent-offset)
-  "Reindent a region of Python code.
-
-The lines from the line containing the start of the current region up
-to (but not including) the line containing the end of the region are
-reindented.  If the first line of the region has a non-whitespace
-character in the first column, the first line is left alone and the
-rest of the region is reindented with respect to it.  Else the entire
-region is reindented with respect to the (closest code or indenting
-comment) statement immediately preceding the region.
-
-This is useful when code blocks are moved or yanked, when enclosing
-control structures are introduced or removed, or to reformat code
-using a new value for the indentation offset.
-
-If a numeric prefix argument is given, it will be used as the value of
-the indentation offset.  Else the value of `py-indent-offset' will be
-used.
-
-Warning: The region must be consistently indented before this function
-is called!  This function does not compute proper indentation from
-scratch (that's impossible in Python), it merely adjusts the existing
-indentation to be correct in context.
-
-Warning: This function really has no idea what to do with
-non-indenting comment lines, and shifts them as if they were indenting
-comment lines.  Fixing this appears to require telepathy.
-
-Special cases: whitespace is deleted from blank lines; continuation
-lines are shifted by the same amount their initial line was shifted,
-in order to preserve their relative indentation with respect to their
-initial line; and comment lines beginning in column 1 are ignored."
-  (interactive "*r\nP")			; region; raw prefix arg
-  (save-excursion
-    (goto-char end)   (beginning-of-line) (setq end (point-marker))
-    (goto-char start) (beginning-of-line)
-    (let ((py-indent-offset (prefix-numeric-value
-			     (or indent-offset py-indent-offset)))
-	  (indents '(-1))		; stack of active indent levels
-	  (target-column 0)		; column to which to indent
-	  (base-shifted-by 0)		; amount last base line was shifted
-	  (indent-base (if (looking-at "[ \t\n]")
-			   (py-compute-indentation t)
-			 0))
-	  ci)
-      (while (< (point) end)
-	(setq ci (current-indentation))
-	;; figure out appropriate target column
-	(cond
-	 ((or (eq (following-char) ?#)	; comment in column 1
-	      (looking-at "[ \t]*$"))	; entirely blank
-	  (setq target-column 0))
-	 ((py-continuation-line-p)	; shift relative to base line
-	  (setq target-column (+ ci base-shifted-by)))
-	 (t				; new base line
-	  (if (> ci (car indents))	; going deeper; push it
-	      (setq indents (cons ci indents))
-	    ;; else we should have seen this indent before
-	    (setq indents (memq ci indents)) ; pop deeper indents
-	    (if (null indents)
-		(error "Bad indentation in region, at line %d"
-		       (save-restriction
-			 (widen)
-			 (1+ (count-lines 1 (point)))))))
-	  (setq target-column (+ indent-base
-				 (* py-indent-offset
-				    (- (length indents) 2))))
-	  (setq base-shifted-by (- target-column ci))))
-	;; shift as needed
-	(if (/= ci target-column)
-	    (progn
-	      (delete-horizontal-space)
-	      (indent-to target-column)))
-	(forward-line 1))))
-  (set-marker end nil))
-
-(defun py-comment-region (beg end &optional arg)
-  "Like `comment-region' but uses double hash (`#') comment starter."
-  (interactive "r\nP")
-  (let ((comment-start py-block-comment-prefix))
-    (comment-region beg end arg)))
-
-
-;; Functions for moving point
-(defun py-previous-statement (count)
-  "Go to the start of the COUNTth preceding Python statement.
-By default, goes to the previous statement.  If there is no such
-statement, goes to the first statement.  Return count of statements
-left to move.  `Statements' do not include blank, comment, or
-continuation lines."
-  (interactive "p")			; numeric prefix arg
-  (if (< count 0) (py-next-statement (- count))
-    (py-goto-initial-line)
-    (let (start)
-      (while (and
-	      (setq start (point))	; always true -- side effect
-	      (> count 0)
-	      (zerop (forward-line -1))
-	      (py-goto-statement-at-or-above))
-	(setq count (1- count)))
-      (if (> count 0) (goto-char start)))
-    count))
-
-(defun py-next-statement (count)
-  "Go to the start of next Python statement.
-If the statement at point is the i'th Python statement, goes to the
-start of statement i+COUNT.  If there is no such statement, goes to the
-last statement.  Returns count of statements left to move.  `Statements'
-do not include blank, comment, or continuation lines."
-  (interactive "p")			; numeric prefix arg
-  (if (< count 0) (py-previous-statement (- count))
-    (beginning-of-line)
-    (let (start)
-      (while (and
-	      (setq start (point))	; always true -- side effect
-	      (> count 0)
-	      (py-goto-statement-below))
-	(setq count (1- count)))
-      (if (> count 0) (goto-char start)))
-    count))
-
-(defun py-goto-block-up (&optional nomark)
-  "Move up to start of current block.
-Go to the statement that starts the smallest enclosing block; roughly
-speaking, this will be the closest preceding statement that ends with a
-colon and is indented less than the statement you started on.  If
-successful, also sets the mark to the starting point.
-
-`\\[py-mark-block]' can be used afterward to mark the whole code
-block, if desired.
-
-If called from a program, the mark will not be set if optional argument
-NOMARK is not nil."
-  (interactive)
-  (let ((start (point))
-	(found nil)
-	initial-indent)
-    (py-goto-initial-line)
-    ;; if on blank or non-indenting comment line, use the preceding stmt
-    (if (looking-at "[ \t]*\\($\\|#[^ \t\n]\\)")
-	(progn
-	  (py-goto-statement-at-or-above)
-	  (setq found (py-statement-opens-block-p))))
-    ;; search back for colon line indented less
-    (setq initial-indent (current-indentation))
-    (if (zerop initial-indent)
-	;; force fast exit
-	(goto-char (point-min)))
-    (while (not (or found (bobp)))
-      (setq found
-	    (and
-	     (re-search-backward ":[ \t]*\\($\\|[#\\]\\)" nil 'move)
-	     (or (py-goto-initial-line) t) ; always true -- side effect
-	     (< (current-indentation) initial-indent)
-	     (py-statement-opens-block-p))))
-    (if found
-	(progn
-	  (or nomark (push-mark start))
-	  (back-to-indentation))
-      (goto-char start)
-      (error "Enclosing block not found"))))
-
-(defun py-beginning-of-def-or-class (&optional class count)
-  "Move point to start of `def' or `class'.
-
-Searches back for the closest preceding `def'.  If you supply a prefix
-arg, looks for a `class' instead.  The docs below assume the `def'
-case; just substitute `class' for `def' for the other case.
-Programmatically, if CLASS is `either', then moves to either `class'
-or `def'.
-
-When second optional argument is given programmatically, move to the
-COUNTth start of `def'.
-
-If point is in a `def' statement already, and after the `d', simply
-moves point to the start of the statement.
-
-Otherwise (i.e. when point is not in a `def' statement, or at or
-before the `d' of a `def' statement), searches for the closest
-preceding `def' statement, and leaves point at its start.  If no such
-statement can be found, leaves point at the start of the buffer.
-
-Returns t iff a `def' statement is found by these rules.
-
-Note that doing this command repeatedly will take you closer to the
-start of the buffer each time.
-
-To mark the current `def', see `\\[py-mark-def-or-class]'."
-  (interactive "P")			; raw prefix arg
-  (setq count (or count 1))
-  (let ((at-or-before-p (<= (current-column) (current-indentation)))
-	(start-of-line (goto-char (py-point 'bol)))
-	(start-of-stmt (goto-char (py-point 'bos)))
-	(start-re (cond ((eq class 'either) "^[ \t]*\\(class\\|def\\)\\>")
-			(class "^[ \t]*class\\>")
-			(t "^[ \t]*def\\>")))
-	)
-    ;; searching backward
-    (if (and (< 0 count)
-	     (or (/= start-of-stmt start-of-line)
-		 (not at-or-before-p)))
-	(end-of-line))
-    ;; search forward
-    (if (and (> 0 count)
-	     (zerop (current-column))
-	     (looking-at start-re))
-	(end-of-line))
-    (if (re-search-backward start-re nil 'move count)
-	(goto-char (match-beginning 0)))))
-
-;; Backwards compatibility
-(defalias 'beginning-of-python-def-or-class 'py-beginning-of-def-or-class)
-
-(defun py-end-of-def-or-class (&optional class count)
-  "Move point beyond end of `def' or `class' body.
-
-By default, looks for an appropriate `def'.  If you supply a prefix
-arg, looks for a `class' instead.  The docs below assume the `def'
-case; just substitute `class' for `def' for the other case.
-Programmatically, if CLASS is `either', then moves to either `class'
-or `def'.
-
-When second optional argument is given programmatically, move to the
-COUNTth end of `def'.
-
-If point is in a `def' statement already, this is the `def' we use.
-
-Else, if the `def' found by `\\[py-beginning-of-def-or-class]'
-contains the statement you started on, that's the `def' we use.
-
-Otherwise, we search forward for the closest following `def', and use that.
-
-If a `def' can be found by these rules, point is moved to the start of
-the line immediately following the `def' block, and the position of the
-start of the `def' is returned.
-
-Else point is moved to the end of the buffer, and nil is returned.
-
-Note that doing this command repeatedly will take you closer to the
-end of the buffer each time.
-
-To mark the current `def', see `\\[py-mark-def-or-class]'."
-  (interactive "P")			; raw prefix arg
-  (if (and count (/= count 1))
-      (py-beginning-of-def-or-class (- 1 count)))
-  (let ((start (progn (py-goto-initial-line) (point)))
-	(which (cond ((eq class 'either) "\\(class\\|def\\)")
-		     (class "class")
-		     (t "def")))
-	(state 'not-found))
-    ;; move point to start of appropriate def/class
-    (if (looking-at (concat "[ \t]*" which "\\>")) ; already on one
-	(setq state 'at-beginning)
-      ;; else see if py-beginning-of-def-or-class hits container
-      (if (and (py-beginning-of-def-or-class class)
-	       (progn (py-goto-beyond-block)
-		      (> (point) start)))
-	  (setq state 'at-end)
-	;; else search forward
-	(goto-char start)
-	(if (re-search-forward (concat "^[ \t]*" which "\\>") nil 'move)
-	    (progn (setq state 'at-beginning)
-		   (beginning-of-line)))))
-    (cond
-     ((eq state 'at-beginning) (py-goto-beyond-block) t)
-     ((eq state 'at-end) t)
-     ((eq state 'not-found) nil)
-     (t (error "Internal error in `py-end-of-def-or-class'")))))
-
-;; Backwards compabitility
-(defalias 'end-of-python-def-or-class 'py-end-of-def-or-class)
-
-
-;; Functions for marking regions
-(defun py-mark-block (&optional extend just-move)
-  "Mark following block of lines.  With prefix arg, mark structure.
-Easier to use than explain.  It sets the region to an `interesting'
-block of succeeding lines.  If point is on a blank line, it goes down to
-the next non-blank line.  That will be the start of the region.  The end
-of the region depends on the kind of line at the start:
-
- - If a comment, the region will include all succeeding comment lines up
-   to (but not including) the next non-comment line (if any).
-
- - Else if a prefix arg is given, and the line begins one of these
-   structures:
-
-     if elif else try except finally for while def class
-
-   the region will be set to the body of the structure, including
-   following blocks that `belong' to it, but excluding trailing blank
-   and comment lines.  E.g., if on a `try' statement, the `try' block
-   and all (if any) of the following `except' and `finally' blocks
-   that belong to the `try' structure will be in the region.  Ditto
-   for if/elif/else, for/else and while/else structures, and (a bit
-   degenerate, since they're always one-block structures) def and
-   class blocks.
-
- - Else if no prefix argument is given, and the line begins a Python
-   block (see list above), and the block is not a `one-liner' (i.e.,
-   the statement ends with a colon, not with code), the region will
-   include all succeeding lines up to (but not including) the next
-   code statement (if any) that's indented no more than the starting
-   line, except that trailing blank and comment lines are excluded.
-   E.g., if the starting line begins a multi-statement `def'
-   structure, the region will be set to the full function definition,
-   but without any trailing `noise' lines.
-
- - Else the region will include all succeeding lines up to (but not
-   including) the next blank line, or code or indenting-comment line
-   indented strictly less than the starting line.  Trailing indenting
-   comment lines are included in this case, but not trailing blank
-   lines.
-
-A msg identifying the location of the mark is displayed in the echo
-area; or do `\\[exchange-point-and-mark]' to flip down to the end.
-
-If called from a program, optional argument EXTEND plays the role of
-the prefix arg, and if optional argument JUST-MOVE is not nil, just
-moves to the end of the block (& does not set mark or display a msg)."
-  (interactive "P")			; raw prefix arg
-  (py-goto-initial-line)
-  ;; skip over blank lines
-  (while (and
-	  (looking-at "[ \t]*$")	; while blank line
-	  (not (eobp)))			; & somewhere to go
-    (forward-line 1))
-  (if (eobp)
-      (error "Hit end of buffer without finding a non-blank stmt"))
-  (let ((initial-pos (point))
-	(initial-indent (current-indentation))
-	last-pos			; position of last stmt in region
-	(followers
-	 '((if elif else) (elif elif else) (else)
-	   (try except finally) (except except) (finally)
-	   (for else) (while else)
-	   (def) (class) ) )
-	first-symbol next-symbol)
-
-    (cond
-     ;; if comment line, suck up the following comment lines
-     ((looking-at "[ \t]*#")
-      (re-search-forward "^[ \t]*[^ \t#]" nil 'move) ; look for non-comment
-      (re-search-backward "^[ \t]*#")	; and back to last comment in block
-      (setq last-pos (point)))
-
-     ;; else if line is a block line and EXTEND given, suck up
-     ;; the whole structure
-     ((and extend
-	   (setq first-symbol (py-suck-up-first-keyword) )
-	   (assq first-symbol followers))
-      (while (and
-	      (or (py-goto-beyond-block) t) ; side effect
-	      (forward-line -1)		; side effect
-	      (setq last-pos (point))	; side effect
-	      (py-goto-statement-below)
-	      (= (current-indentation) initial-indent)
-	      (setq next-symbol (py-suck-up-first-keyword))
-	      (memq next-symbol (cdr (assq first-symbol followers))))
-	(setq first-symbol next-symbol)))
-
-     ;; else if line *opens* a block, search for next stmt indented <=
-     ((py-statement-opens-block-p)
-      (while (and
-	      (setq last-pos (point))	; always true -- side effect
-	      (py-goto-statement-below)
-	      (> (current-indentation) initial-indent)
-	      )))
-
-     ;; else plain code line; stop at next blank line, or stmt or
-     ;; indenting comment line indented <
-     (t
-      (while (and
-	      (setq last-pos (point))	; always true -- side effect
-	      (or (py-goto-beyond-final-line) t)
-	      (not (looking-at "[ \t]*$")) ; stop at blank line
-	      (or
-	       (>= (current-indentation) initial-indent)
-	       (looking-at "[ \t]*#[^ \t\n]"))) ; ignore non-indenting #
-	nil)))
-
-    ;; skip to end of last stmt
-    (goto-char last-pos)
-    (py-goto-beyond-final-line)
-
-    ;; set mark & display
-    (if just-move
-	()				; just return
-      (push-mark (point) 'no-msg)
-      (forward-line -1)
-      (message "Mark set after: %s" (py-suck-up-leading-text))
-      (goto-char initial-pos))))
-
-(defun py-mark-def-or-class (&optional class)
-  "Set region to body of def (or class, with prefix arg) enclosing point.
-Pushes the current mark, then point, on the mark ring (all language
-modes do this, but although it's handy it's never documented ...).
-
-In most Emacs language modes, this function bears at least a
-hallucinogenic resemblance to `\\[py-end-of-def-or-class]' and
-`\\[py-beginning-of-def-or-class]'.
-
-And in earlier versions of Python mode, all 3 were tightly connected.
-Turned out that was more confusing than useful: the `goto start' and
-`goto end' commands are usually used to search through a file, and
-people expect them to act a lot like `search backward' and `search
-forward' string-search commands.  But because Python `def' and `class'
-can nest to arbitrary levels, finding the smallest def containing
-point cannot be done via a simple backward search: the def containing
-point may not be the closest preceding def, or even the closest
-preceding def that's indented less.  The fancy algorithm required is
-appropriate for the usual uses of this `mark' command, but not for the
-`goto' variations.
-
-So the def marked by this command may not be the one either of the
-`goto' commands find: If point is on a blank or non-indenting comment
-line, moves back to start of the closest preceding code statement or
-indenting comment line.  If this is a `def' statement, that's the def
-we use.  Else searches for the smallest enclosing `def' block and uses
-that.  Else signals an error.
-
-When an enclosing def is found: The mark is left immediately beyond
-the last line of the def block.  Point is left at the start of the
-def, except that: if the def is preceded by a number of comment lines
-followed by (at most) one optional blank line, point is left at the
-start of the comments; else if the def is preceded by a blank line,
-point is left at its start.
-
-The intent is to mark the containing def/class and its associated
-documentation, to make moving and duplicating functions and classes
-pleasant."
-  (interactive "P")			; raw prefix arg
-  (let ((start (point))
-	(which (cond ((eq class 'either) "\\(class\\|def\\)")
-		     (class "class")
-		     (t "def"))))
-    (push-mark start)
-    (if (not (py-go-up-tree-to-keyword which))
-	(progn (goto-char start)
-	       (error "Enclosing %s not found"
-		      (if (eq class 'either)
-			  "def or class"
-			which)))
-      ;; else enclosing def/class found
-      (setq start (point))
-      (py-goto-beyond-block)
-      (push-mark (point))
-      (goto-char start)
-      (if (zerop (forward-line -1))	; if there is a preceding line
-	  (progn
-	    (if (looking-at "[ \t]*$")	; it's blank
-		(setq start (point))	; so reset start point
-	      (goto-char start))	; else try again
-	    (if (zerop (forward-line -1))
-		(if (looking-at "[ \t]*#") ; a comment
-		    ;; look back for non-comment line
-		    ;; tricky: note that the regexp matches a blank
-		    ;; line, cuz \n is in the 2nd character class
-		    (and
-		     (re-search-backward "^[ \t]*[^ \t#]" nil 'move)
-		     (forward-line 1))
-		  ;; no comment, so go back
-		  (goto-char start)))))))
-  (exchange-point-and-mark)
-  (py-keep-region-active))
-
-;; ripped from cc-mode
-(defun py-forward-into-nomenclature (&optional arg)
-  "Move forward to end of a nomenclature section or word.
-With \\[universal-argument] (programmatically, optional argument ARG),
-do it that many times.
-
-A `nomenclature' is a fancy way of saying AWordWithMixedCaseNotUnderscores."
-  (interactive "p")
-  (let ((case-fold-search nil))
-    (if (> arg 0)
-	(re-search-forward
-	 "\\(\\W\\|[_]\\)*\\([A-Z]*[a-z0-9]*\\)"
-	 (point-max) t arg)
-      (while (and (< arg 0)
-		  (re-search-backward
-		   "\\(\\W\\|[a-z0-9]\\)[A-Z]+\\|\\(\\W\\|[_]\\)\\w+"
-		   (point-min) 0))
-	(forward-char 1)
-	(setq arg (1+ arg)))))
-  (py-keep-region-active))
-
-(defun py-backward-into-nomenclature (&optional arg)
-  "Move backward to beginning of a nomenclature section or word.
-With optional ARG, move that many times.  If ARG is negative, move
-forward.
-
-A `nomenclature' is a fancy way of saying AWordWithMixedCaseNotUnderscores."
-  (interactive "p")
-  (py-forward-into-nomenclature (- arg))
-  (py-keep-region-active))
-
-
-
-;; pdbtrack functions
-(defun py-pdbtrack-toggle-stack-tracking (arg)
-  (interactive "P")
-  (if (not (get-buffer-process (current-buffer)))
-      (error "No process associated with buffer '%s'" (current-buffer)))
-  ;; missing or 0 is toggle, >0 turn on, <0 turn off
-  (if (or (not arg)
-	  (zerop (setq arg (prefix-numeric-value arg))))
-      (setq py-pdbtrack-do-tracking-p (not py-pdbtrack-do-tracking-p))
-    (setq py-pdbtrack-do-tracking-p (> arg 0)))
-  (message "%sabled Python's pdbtrack"
-           (if py-pdbtrack-do-tracking-p "En" "Dis")))
-
-(defun turn-on-pdbtrack ()
-  (interactive)
-  (py-pdbtrack-toggle-stack-tracking 1))
-
-(defun turn-off-pdbtrack ()
-  (interactive)
-  (py-pdbtrack-toggle-stack-tracking 0))
-
-
-
-;; Pychecker
-
-;; hack for FSF Emacs
-(unless (fboundp 'read-shell-command)
-  (defalias 'read-shell-command 'read-string))
-
-(defun py-pychecker-run (command)
-  "*Run pychecker (default on the file currently visited)."
-  (interactive
-   (let ((default
-           (format "%s %s %s" py-pychecker-command
-		   (mapconcat 'identity py-pychecker-command-args " ")
-		   (buffer-file-name)))
-	 (last (when py-pychecker-history
-		 (let* ((lastcmd (car py-pychecker-history))
-			(cmd (cdr (reverse (split-string lastcmd))))
-			(newcmd (reverse (cons (buffer-file-name) cmd))))
-		   (mapconcat 'identity newcmd " ")))))
-
-     (list
-      (if (fboundp 'read-shell-command)
-	  (read-shell-command "Run pychecker like this: "
-			      (if last
-				  last
-				default)
-			      'py-pychecker-history)
-	(read-string "Run pychecker like this: "
-		     (if last
-			 last
-		       default)
-		     'py-pychecker-history))
-	)))
-  (save-some-buffers (not py-ask-about-save) nil)
-  (compile-internal command "No more errors"))
-
-
-
-;; pydoc commands. The guts of this function is stolen from XEmacs's
-;; symbol-near-point, but without the useless regexp-quote call on the
-;; results, nor the interactive bit.  Also, we've added the temporary
-;; syntax table setting, which Skip originally had broken out into a
-;; separate function.  Note that Emacs doesn't have the original
-;; function.
-(defun py-symbol-near-point ()
-  "Return the first textual item to the nearest point."
-  ;; alg stolen from etag.el
-  (save-excursion
-    (with-syntax-table py-dotted-expression-syntax-table
-      (if (or (bobp) (not (memq (char-syntax (char-before)) '(?w ?_))))
-	  (while (not (looking-at "\\sw\\|\\s_\\|\\'"))
-	    (forward-char 1)))
-      (while (looking-at "\\sw\\|\\s_")
-	(forward-char 1))
-      (if (re-search-backward "\\sw\\|\\s_" nil t)
-	  (progn (forward-char 1)
-		 (buffer-substring (point)
-				   (progn (forward-sexp -1)
-					  (while (looking-at "\\s'")
-					    (forward-char 1))
-					  (point))))
-	nil))))
-
-(defun py-help-at-point ()
-  "Get help from Python based on the symbol nearest point."
-  (interactive)
-  (let* ((sym (py-symbol-near-point))
-	 (base (substring sym 0 (or (search "." sym :from-end t) 0)))
-	 cmd)
-    (if (not (equal base ""))
-        (setq cmd (concat "import " base "\n")))
-    (setq cmd (concat "import pydoc\n"
-                      cmd
-		      "try: pydoc.help('" sym "')\n"
-		      "except: print 'No help available on:', \"" sym "\""))
-    (message cmd)
-    (py-execute-string cmd)
-    (set-buffer "*Python Output*")
-    ;; BAW: Should we really be leaving the output buffer in help-mode?
-    (help-mode)))
-
-
-
-;; Documentation functions
-
-;; dump the long form of the mode blurb; does the usual doc escapes,
-;; plus lines of the form ^[vc]:name$ to suck variable & command docs
-;; out of the right places, along with the keys they're on & current
-;; values
-(defun py-dump-help-string (str)
-  (with-output-to-temp-buffer "*Help*"
-    (let ((locals (buffer-local-variables))
-	  funckind funcname func funcdoc
-	  (start 0) mstart end
-	  keys )
-      (while (string-match "^%\\([vc]\\):\\(.+\\)\n" str start)
-	(setq mstart (match-beginning 0)  end (match-end 0)
-	      funckind (substring str (match-beginning 1) (match-end 1))
-	      funcname (substring str (match-beginning 2) (match-end 2))
-	      func (intern funcname))
-	(princ (substitute-command-keys (substring str start mstart)))
-	(cond
-	 ((equal funckind "c")		; command
-	  (setq funcdoc (documentation func)
-		keys (concat
-		      "Key(s): "
-		      (mapconcat 'key-description
-				 (where-is-internal func py-mode-map)
-				 ", "))))
-	 ((equal funckind "v")		; variable
-	  (setq funcdoc (documentation-property func 'variable-documentation)
-		keys (if (assq func locals)
-			 (concat
-			  "Local/Global values: "
-			  (prin1-to-string (symbol-value func))
-			  " / "
-			  (prin1-to-string (default-value func)))
-		       (concat
-			"Value: "
-			(prin1-to-string (symbol-value func))))))
-	 (t				; unexpected
-	  (error "Error in py-dump-help-string, tag `%s'" funckind)))
-	(princ (format "\n-> %s:\t%s\t%s\n\n"
-		       (if (equal funckind "c") "Command" "Variable")
-		       funcname keys))
-	(princ funcdoc)
-	(terpri)
-	(setq start end))
-      (princ (substitute-command-keys (substring str start))))
-    (print-help-return-message)))
-
-(defun py-describe-mode ()
-  "Dump long form of Python-mode docs."
-  (interactive)
-  (py-dump-help-string "Major mode for editing Python files.
-Knows about Python indentation, tokens, comments and continuation lines.
-Paragraphs are separated by blank lines only.
-
-Major sections below begin with the string `@'; specific function and
-variable docs begin with `->'.
-
-@EXECUTING PYTHON CODE
-
-\\[py-execute-import-or-reload]\timports or reloads the file in the Python interpreter
-\\[py-execute-buffer]\tsends the entire buffer to the Python interpreter
-\\[py-execute-region]\tsends the current region
-\\[py-execute-def-or-class]\tsends the current function or class definition
-\\[py-execute-string]\tsends an arbitrary string
-\\[py-shell]\tstarts a Python interpreter window; this will be used by
-\tsubsequent Python execution commands
-%c:py-execute-import-or-reload
-%c:py-execute-buffer
-%c:py-execute-region
-%c:py-execute-def-or-class
-%c:py-execute-string
-%c:py-shell
-
-@VARIABLES
-
-py-indent-offset\tindentation increment
-py-block-comment-prefix\tcomment string used by comment-region
-
-py-python-command\tshell command to invoke Python interpreter
-py-temp-directory\tdirectory used for temp files (if needed)
-
-py-beep-if-tab-change\tring the bell if tab-width is changed
-%v:py-indent-offset
-%v:py-block-comment-prefix
-%v:py-python-command
-%v:py-temp-directory
-%v:py-beep-if-tab-change
-
-@KINDS OF LINES
-
-Each physical line in the file is either a `continuation line' (the
-preceding line ends with a backslash that's not part of a comment, or
-the paren/bracket/brace nesting level at the start of the line is
-non-zero, or both) or an `initial line' (everything else).
-
-An initial line is in turn a `blank line' (contains nothing except
-possibly blanks or tabs), a `comment line' (leftmost non-blank
-character is `#'), or a `code line' (everything else).
-
-Comment Lines
-
-Although all comment lines are treated alike by Python, Python mode
-recognizes two kinds that act differently with respect to indentation.
-
-An `indenting comment line' is a comment line with a blank, tab or
-nothing after the initial `#'.  The indentation commands (see below)
-treat these exactly as if they were code lines: a line following an
-indenting comment line will be indented like the comment line.  All
-other comment lines (those with a non-whitespace character immediately
-following the initial `#') are `non-indenting comment lines', and
-their indentation is ignored by the indentation commands.
-
-Indenting comment lines are by far the usual case, and should be used
-whenever possible.  Non-indenting comment lines are useful in cases
-like these:
-
-\ta = b   # a very wordy single-line comment that ends up being
-\t        #... continued onto another line
-
-\tif a == b:
-##\t\tprint 'panic!' # old code we've `commented out'
-\t\treturn a
-
-Since the `#...' and `##' comment lines have a non-whitespace
-character following the initial `#', Python mode ignores them when
-computing the proper indentation for the next line.
-
-Continuation Lines and Statements
-
-The Python-mode commands generally work on statements instead of on
-individual lines, where a `statement' is a comment or blank line, or a
-code line and all of its following continuation lines (if any)
-considered as a single logical unit.  The commands in this mode
-generally (when it makes sense) automatically move to the start of the
-statement containing point, even if point happens to be in the middle
-of some continuation line.
-
-
-@INDENTATION
-
-Primarily for entering new code:
-\t\\[indent-for-tab-command]\t indent line appropriately
-\t\\[py-newline-and-indent]\t insert newline, then indent
-\t\\[py-electric-backspace]\t reduce indentation, or delete single character
-
-Primarily for reindenting existing code:
-\t\\[py-guess-indent-offset]\t guess py-indent-offset from file content; change locally
-\t\\[universal-argument] \\[py-guess-indent-offset]\t ditto, but change globally
-
-\t\\[py-indent-region]\t reindent region to match its context
-\t\\[py-shift-region-left]\t shift region left by py-indent-offset
-\t\\[py-shift-region-right]\t shift region right by py-indent-offset
-
-Unlike most programming languages, Python uses indentation, and only
-indentation, to specify block structure.  Hence the indentation supplied
-automatically by Python-mode is just an educated guess:  only you know
-the block structure you intend, so only you can supply correct
-indentation.
-
-The \\[indent-for-tab-command] and \\[py-newline-and-indent] keys try to suggest plausible indentation, based on
-the indentation of preceding statements.  E.g., assuming
-py-indent-offset is 4, after you enter
-\tif a > 0: \\[py-newline-and-indent]
-the cursor will be moved to the position of the `_' (_ is not a
-character in the file, it's just used here to indicate the location of
-the cursor):
-\tif a > 0:
-\t    _
-If you then enter `c = d' \\[py-newline-and-indent], the cursor will move
-to
-\tif a > 0:
-\t    c = d
-\t    _
-Python-mode cannot know whether that's what you intended, or whether
-\tif a > 0:
-\t    c = d
-\t_
-was your intent.  In general, Python-mode either reproduces the
-indentation of the (closest code or indenting-comment) preceding
-statement, or adds an extra py-indent-offset blanks if the preceding
-statement has `:' as its last significant (non-whitespace and non-
-comment) character.  If the suggested indentation is too much, use
-\\[py-electric-backspace] to reduce it.
-
-Continuation lines are given extra indentation.  If you don't like the
-suggested indentation, change it to something you do like, and Python-
-mode will strive to indent later lines of the statement in the same way.
-
-If a line is a continuation line by virtue of being in an unclosed
-paren/bracket/brace structure (`list', for short), the suggested
-indentation depends on whether the current line contains the first item
-in the list.  If it does, it's indented py-indent-offset columns beyond
-the indentation of the line containing the open bracket.  If you don't
-like that, change it by hand.  The remaining items in the list will mimic
-whatever indentation you give to the first item.
-
-If a line is a continuation line because the line preceding it ends with
-a backslash, the third and following lines of the statement inherit their
-indentation from the line preceding them.  The indentation of the second
-line in the statement depends on the form of the first (base) line:  if
-the base line is an assignment statement with anything more interesting
-than the backslash following the leftmost assigning `=', the second line
-is indented two columns beyond that `='.  Else it's indented to two
-columns beyond the leftmost solid chunk of non-whitespace characters on
-the base line.
-
-Warning:  indent-region should not normally be used!  It calls \\[indent-for-tab-command]
-repeatedly, and as explained above, \\[indent-for-tab-command] can't guess the block
-structure you intend.
-%c:indent-for-tab-command
-%c:py-newline-and-indent
-%c:py-electric-backspace
-
-
-The next function may be handy when editing code you didn't write:
-%c:py-guess-indent-offset
-
-
-The remaining `indent' functions apply to a region of Python code.  They
-assume the block structure (equals indentation, in Python) of the region
-is correct, and alter the indentation in various ways while preserving
-the block structure:
-%c:py-indent-region
-%c:py-shift-region-left
-%c:py-shift-region-right
-
-@MARKING & MANIPULATING REGIONS OF CODE
-
-\\[py-mark-block]\t mark block of lines
-\\[py-mark-def-or-class]\t mark smallest enclosing def
-\\[universal-argument] \\[py-mark-def-or-class]\t mark smallest enclosing class
-\\[comment-region]\t comment out region of code
-\\[universal-argument] \\[comment-region]\t uncomment region of code
-%c:py-mark-block
-%c:py-mark-def-or-class
-%c:comment-region
-
-@MOVING POINT
-
-\\[py-previous-statement]\t move to statement preceding point
-\\[py-next-statement]\t move to statement following point
-\\[py-goto-block-up]\t move up to start of current block
-\\[py-beginning-of-def-or-class]\t move to start of def
-\\[universal-argument] \\[py-beginning-of-def-or-class]\t move to start of class
-\\[py-end-of-def-or-class]\t move to end of def
-\\[universal-argument] \\[py-end-of-def-or-class]\t move to end of class
-
-The first two move to one statement beyond the statement that contains
-point.  A numeric prefix argument tells them to move that many
-statements instead.  Blank lines, comment lines, and continuation lines
-do not count as `statements' for these commands.  So, e.g., you can go
-to the first code statement in a file by entering
-\t\\[beginning-of-buffer]\t to move to the top of the file
-\t\\[py-next-statement]\t to skip over initial comments and blank lines
-Or do `\\[py-previous-statement]' with a huge prefix argument.
-%c:py-previous-statement
-%c:py-next-statement
-%c:py-goto-block-up
-%c:py-beginning-of-def-or-class
-%c:py-end-of-def-or-class
-
-@LITTLE-KNOWN EMACS COMMANDS PARTICULARLY USEFUL IN PYTHON MODE
-
-`\\[indent-new-comment-line]' is handy for entering a multi-line comment.
-
-`\\[set-selective-display]' with a `small' prefix arg is ideally suited for viewing the
-overall class and def structure of a module.
-
-`\\[back-to-indentation]' moves point to a line's first non-blank character.
-
-`\\[indent-relative]' is handy for creating odd indentation.
-
-@OTHER EMACS HINTS
-
-If you don't like the default value of a variable, change its value to
-whatever you do like by putting a `setq' line in your .emacs file.
-E.g., to set the indentation increment to 4, put this line in your
-.emacs:
-\t(setq  py-indent-offset  4)
-To see the value of a variable, do `\\[describe-variable]' and enter the variable
-name at the prompt.
-
-When entering a key sequence like `C-c C-n', it is not necessary to
-release the CONTROL key after doing the `C-c' part -- it suffices to
-press the CONTROL key, press and release `c' (while still holding down
-CONTROL), press and release `n' (while still holding down CONTROL), &
-then release CONTROL.
-
-Entering Python mode calls with no arguments the value of the variable
-`python-mode-hook', if that value exists and is not nil; for backward
-compatibility it also tries `py-mode-hook'; see the `Hooks' section of
-the Elisp manual for details.
-
-Obscure:  When python-mode is first loaded, it looks for all bindings
-to newline-and-indent in the global keymap, and shadows them with
-local bindings to py-newline-and-indent."))
-
-(require 'info-look)
-;; The info-look package does not always provide this function (it
-;; appears this is the case with XEmacs 21.1)
-(when (fboundp 'info-lookup-maybe-add-help)
-  (info-lookup-maybe-add-help
-   :mode 'python-mode
-   :regexp "[a-zA-Z0-9_]+"
-   :doc-spec '(("(python-lib)Module Index")
-	       ("(python-lib)Class-Exception-Object Index")
-	       ("(python-lib)Function-Method-Variable Index")
-	       ("(python-lib)Miscellaneous Index")))
-  )
-
-
-;; Helper functions
-(defvar py-parse-state-re
-  (concat
-   "^[ \t]*\\(elif\\|else\\|while\\|def\\|class\\)\\>"
-   "\\|"
-   "^[^ #\t\n]"))
-
-(defun py-parse-state ()
-  "Return the parse state at point (see `parse-partial-sexp' docs)."
-  (save-excursion
-    (let ((here (point))
-	  pps done)
-      (while (not done)
-	;; back up to the first preceding line (if any; else start of
-	;; buffer) that begins with a popular Python keyword, or a
-	;; non- whitespace and non-comment character.  These are good
-	;; places to start parsing to see whether where we started is
-	;; at a non-zero nesting level.  It may be slow for people who
-	;; write huge code blocks or huge lists ... tough beans.
-	(re-search-backward py-parse-state-re nil 'move)
-	(beginning-of-line)
-	;; In XEmacs, we have a much better way to test for whether
-	;; we're in a triple-quoted string or not.  Emacs does not
-	;; have this built-in function, which is its loss because
-	;; without scanning from the beginning of the buffer, there's
-	;; no accurate way to determine this otherwise.
-	(save-excursion (setq pps (parse-partial-sexp (point) here)))
-	;; make sure we don't land inside a triple-quoted string
-	(setq done (or (not (nth 3 pps))
-		       (bobp)))
-	;; Just go ahead and short circuit the test back to the
-	;; beginning of the buffer.  This will be slow, but not
-	;; nearly as slow as looping through many
-	;; re-search-backwards.
-	(if (not done)
-	    (goto-char (point-min))))
-      pps)))
-
-(defun py-nesting-level ()
-  "Return the buffer position of the last unclosed enclosing list.
-If nesting level is zero, return nil."
-  (let ((status (py-parse-state)))
-    (if (zerop (car status))
-	nil				; not in a nest
-      (car (cdr status)))))		; char# of open bracket
-
-(defun py-backslash-continuation-line-p ()
-  "Return t iff preceding line ends with backslash that is not in a comment."
-  (save-excursion
-    (beginning-of-line)
-    (and
-     ;; use a cheap test first to avoid the regexp if possible
-     ;; use 'eq' because char-after may return nil
-     (eq (char-after (- (point) 2)) ?\\ )
-     ;; make sure; since eq test passed, there is a preceding line
-     (forward-line -1)			; always true -- side effect
-     (looking-at py-continued-re))))
-
-(defun py-continuation-line-p ()
-  "Return t iff current line is a continuation line."
-  (save-excursion
-    (beginning-of-line)
-    (or (py-backslash-continuation-line-p)
-	(py-nesting-level))))
-
-(defun py-goto-beginning-of-tqs (delim)
-  "Go to the beginning of the triple quoted string we find ourselves in.
-DELIM is the TQS string delimiter character we're searching backwards
-for."
-  (let ((skip (and delim (make-string 1 delim)))
-	(continue t))
-    (when skip
-      (save-excursion
-	(while continue
-	  (py-safe (search-backward skip))
-	  (setq continue (and (not (bobp))
-			      (= (char-before) ?\\))))
-	(if (and (= (char-before) delim)
-		 (= (char-before (1- (point))) delim))
-	    (setq skip (make-string 3 delim))))
-      ;; we're looking at a triple-quoted string
-      (py-safe (search-backward skip)))))
-
-(defun py-goto-initial-line ()
-  "Go to the initial line of the current statement.
-Usually this is the line we're on, but if we're on the 2nd or
-following lines of a continuation block, we need to go up to the first
-line of the block."
-  ;; Tricky: We want to avoid quadratic-time behavior for long
-  ;; continued blocks, whether of the backslash or open-bracket
-  ;; varieties, or a mix of the two.  The following manages to do that
-  ;; in the usual cases.
-  ;;
-  ;; Also, if we're sitting inside a triple quoted string, this will
-  ;; drop us at the line that begins the string.
-  (let (open-bracket-pos)
-    (while (py-continuation-line-p)
-      (beginning-of-line)
-      (if (py-backslash-continuation-line-p)
-	  (while (py-backslash-continuation-line-p)
-	    (forward-line -1))
-	;; else zip out of nested brackets/braces/parens
-	(while (setq open-bracket-pos (py-nesting-level))
-	  (goto-char open-bracket-pos)))))
-  (beginning-of-line))
-
-(defun py-goto-beyond-final-line ()
-  "Go to the point just beyond the fine line of the current statement.
-Usually this is the start of the next line, but if this is a
-multi-line statement we need to skip over the continuation lines."
-  ;; Tricky: Again we need to be clever to avoid quadratic time
-  ;; behavior.
-  ;;
-  ;; XXX: Not quite the right solution, but deals with multi-line doc
-  ;; strings
-  (if (looking-at (concat "[ \t]*\\(" py-stringlit-re "\\)"))
-      (goto-char (match-end 0)))
-  ;;
-  (forward-line 1)
-  (let (state)
-    (while (and (py-continuation-line-p)
-		(not (eobp)))
-      ;; skip over the backslash flavor
-      (while (and (py-backslash-continuation-line-p)
-		  (not (eobp)))
-	(forward-line 1))
-      ;; if in nest, zip to the end of the nest
-      (setq state (py-parse-state))
-      (if (and (not (zerop (car state)))
-	       (not (eobp)))
-	  (progn
-	    (parse-partial-sexp (point) (point-max) 0 nil state)
-	    (forward-line 1))))))
-
-(defun py-statement-opens-block-p ()
-  "Return t iff the current statement opens a block.
-I.e., iff it ends with a colon that is not in a comment.  Point should
-be at the start of a statement."
-  (save-excursion
-    (let ((start (point))
-	  (finish (progn (py-goto-beyond-final-line) (1- (point))))
-	  (searching t)
-	  (answer nil)
-	  state)
-      (goto-char start)
-      (while searching
-	;; look for a colon with nothing after it except whitespace, and
-	;; maybe a comment
-	(if (re-search-forward ":\\([ \t]\\|\\\\\n\\)*\\(#.*\\)?$"
-			       finish t)
-	    (if (eq (point) finish)	; note: no `else' clause; just
-					; keep searching if we're not at
-					; the end yet
-		;; sure looks like it opens a block -- but it might
-		;; be in a comment
-		(progn
-		  (setq searching nil)	; search is done either way
-		  (setq state (parse-partial-sexp start
-						  (match-beginning 0)))
-		  (setq answer (not (nth 4 state)))))
-	  ;; search failed: couldn't find another interesting colon
-	  (setq searching nil)))
-      answer)))
-
-(defun py-statement-closes-block-p ()
-  "Return t iff the current statement closes a block.
-I.e., if the line starts with `return', `raise', `break', `continue',
-and `pass'.  This doesn't catch embedded statements."
-  (let ((here (point)))
-    (py-goto-initial-line)
-    (back-to-indentation)
-    (prog1
-	(looking-at (concat py-block-closing-keywords-re "\\>"))
-      (goto-char here))))
-
-(defun py-goto-beyond-block ()
-  "Go to point just beyond the final line of block begun by the current line.
-This is the same as where `py-goto-beyond-final-line' goes unless
-we're on colon line, in which case we go to the end of the block.
-Assumes point is at the beginning of the line."
-  (if (py-statement-opens-block-p)
-      (py-mark-block nil 'just-move)
-    (py-goto-beyond-final-line)))
-
-(defun py-goto-statement-at-or-above ()
-  "Go to the start of the first statement at or preceding point.
-Return t if there is such a statement, otherwise nil.  `Statement'
-does not include blank lines, comments, or continuation lines."
-  (py-goto-initial-line)
-  (if (looking-at py-blank-or-comment-re)
-      ;; skip back over blank & comment lines
-      ;; note:  will skip a blank or comment line that happens to be
-      ;; a continuation line too
-      (if (re-search-backward "^[ \t]*[^ \t#\n]" nil t)
-	  (progn (py-goto-initial-line) t)
-	nil)
-    t))
-
-(defun py-goto-statement-below ()
-  "Go to start of the first statement following the statement containing point.
-Return t if there is such a statement, otherwise nil.  `Statement'
-does not include blank lines, comments, or continuation lines."
-  (beginning-of-line)
-  (let ((start (point)))
-    (py-goto-beyond-final-line)
-    (while (and
-	    (or (looking-at py-blank-or-comment-re)
-		(py-in-literal))
-	    (not (eobp)))
-      (forward-line 1))
-    (if (eobp)
-	(progn (goto-char start) nil)
-      t)))
-
-(defun py-go-up-tree-to-keyword (key)
-  "Go to begining of statement starting with KEY, at or preceding point.
-
-KEY is a regular expression describing a Python keyword.  Skip blank
-lines and non-indenting comments.  If the statement found starts with
-KEY, then stop, otherwise go back to first enclosing block starting
-with KEY.  If successful, leave point at the start of the KEY line and
-return t.  Otherwise, leave point at an undefined place and return nil."
-  ;; skip blanks and non-indenting #
-  (py-goto-initial-line)
-  (while (and
-	  (looking-at "[ \t]*\\($\\|#[^ \t\n]\\)")
-	  (zerop (forward-line -1)))	; go back
-    nil)
-  (py-goto-initial-line)
-  (let* ((re (concat "[ \t]*" key "\\>"))
-	 (case-fold-search nil)		; let* so looking-at sees this
-	 (found (looking-at re))
-	 (dead nil))
-    (while (not (or found dead))
-      (condition-case nil		; in case no enclosing block
-	  (py-goto-block-up 'no-mark)
-	(error (setq dead t)))
-      (or dead (setq found (looking-at re))))
-    (beginning-of-line)
-    found))
-
-(defun py-suck-up-leading-text ()
-  "Return string in buffer from start of indentation to end of line.
-Prefix with \"...\" if leading whitespace was skipped."
-  (save-excursion
-    (back-to-indentation)
-    (concat
-     (if (bolp) "" "...")
-     (buffer-substring (point) (progn (end-of-line) (point))))))
-
-(defun py-suck-up-first-keyword ()
-  "Return first keyword on the line as a Lisp symbol.
-`Keyword' is defined (essentially) as the regular expression
-([a-z]+).  Returns nil if none was found."
-  (let ((case-fold-search nil))
-    (if (looking-at "[ \t]*\\([a-z]+\\)\\>")
-	(intern (buffer-substring (match-beginning 1) (match-end 1)))
-      nil)))
-
-(defun py-current-defun ()
-  "Python value for `add-log-current-defun-function'.
-This tells add-log.el how to find the current function/method/variable."
-  (save-excursion
-
-    ;; Move back to start of the current statement.
-
-    (py-goto-initial-line)
-    (back-to-indentation)
-    (while (and (or (looking-at py-blank-or-comment-re)
-		    (py-in-literal))
-		(not (bobp)))
-      (backward-to-indentation 1))
-    (py-goto-initial-line)
-
-    (let ((scopes "")
-	  (sep "")
-	  dead assignment)
-
-      ;; Check for an assignment.  If this assignment exists inside a
-      ;; def, it will be overwritten inside the while loop.  If it
-      ;; exists at top lever or inside a class, it will be preserved.
-
-      (when (looking-at "[ \t]*\\([a-zA-Z0-9_]+\\)[ \t]*=")
-	(setq scopes (buffer-substring (match-beginning 1) (match-end 1)))
-	(setq assignment t)
-	(setq sep "."))
-
-      ;; Prepend the name of each outer socpe (def or class).
-
-      (while (not dead)
-	(if (and (py-go-up-tree-to-keyword "\\(class\\|def\\)")
-		 (looking-at
-		  "[ \t]*\\(class\\|def\\)[ \t]*\\([a-zA-Z0-9_]+\\)[ \t]*"))
-	    (let ((name (buffer-substring (match-beginning 2) (match-end 2))))
-	      (if (and assignment (looking-at "[ \t]*def"))
-		  (setq scopes name)
-		(setq scopes (concat name sep scopes))
-		(setq sep "."))))
-	(setq assignment nil)
-	(condition-case nil		; Terminate nicely at top level.
-	    (py-goto-block-up 'no-mark)
-	  (error (setq dead t))))
-      (if (string= scopes "")
-	  nil
-	scopes))))
-
-
-
-(defconst py-help-address "python-mode@python.org"
-  "Address accepting submission of bug reports.")
-
-(defun py-version ()
-  "Echo the current version of `python-mode' in the minibuffer."
-  (interactive)
-  (message "Using `python-mode' version %s" py-version)
-  (py-keep-region-active))
-
-;; only works under Emacs 19
-;(eval-when-compile
-;  (require 'reporter))
-
-(defun py-submit-bug-report (enhancement-p)
-  "Submit via mail a bug report on `python-mode'.
-With \\[universal-argument] (programmatically, argument ENHANCEMENT-P
-non-nil) just submit an enhancement request."
-  (interactive
-   (list (not (y-or-n-p
-	       "Is this a bug report (hit `n' to send other comments)? "))))
-  (let ((reporter-prompt-for-summary-p (if enhancement-p
-					   "(Very) brief summary: "
-					 t)))
-    (require 'reporter)
-    (reporter-submit-bug-report
-     py-help-address			;address
-     (concat "python-mode " py-version)	;pkgname
-     ;; varlist
-     (if enhancement-p nil
-       '(py-python-command
-	 py-indent-offset
-	 py-block-comment-prefix
-	 py-temp-directory
-	 py-beep-if-tab-change))
-     nil				;pre-hooks
-     nil				;post-hooks
-     "Dear Barry,")			;salutation
-    (if enhancement-p nil
-      (set-mark (point))
-      (insert
-"Please replace this text with a sufficiently large code sample\n\
-and an exact recipe so that I can reproduce your problem.  Failure\n\
-to do so may mean a greater delay in fixing your bug.\n\n")
-      (exchange-point-and-mark)
-      (py-keep-region-active))))
-
-
-(defun py-kill-emacs-hook ()
-  "Delete files in `py-file-queue'.
-These are Python temporary files awaiting execution."
-  (mapcar #'(lambda (filename)
-	      (py-safe (delete-file filename)))
-	  py-file-queue))
-
-;; arrange to kill temp files when Emacs exists
-(add-hook 'kill-emacs-hook 'py-kill-emacs-hook)
-(add-hook 'comint-output-filter-functions 'py-pdbtrack-track-stack-file)
-
-;; Add a designator to the minor mode strings
-(or (assq 'py-pdbtrack-is-tracking-p minor-mode-alist)
-    (push '(py-pdbtrack-is-tracking-p py-pdbtrack-minor-mode-string)
-	  minor-mode-alist))
-
-
-
-;;; paragraph and string filling code from Bernhard Herzog
-;;; see http://mail.python.org/pipermail/python-list/2002-May/103189.html
-
-(defun py-fill-comment (&optional justify)
-  "Fill the comment paragraph around point"
-  (let (;; Non-nil if the current line contains a comment.
-	has-comment
-
-	;; If has-comment, the appropriate fill-prefix for the comment.
-	comment-fill-prefix)
-
-    ;; Figure out what kind of comment we are looking at.
-    (save-excursion
-      (beginning-of-line)
-      (cond
-       ;; A line with nothing but a comment on it?
-       ((looking-at "[ \t]*#[# \t]*")
-	(setq has-comment t
-	      comment-fill-prefix (buffer-substring (match-beginning 0)
-						    (match-end 0))))
-
-       ;; A line with some code, followed by a comment? Remember that the hash
-       ;; which starts the comment shouldn't be part of a string or character.
-       ((progn
-	  (while (not (looking-at "#\\|$"))
-	    (skip-chars-forward "^#\n\"'\\")
-	    (cond
-	     ((eq (char-after (point)) ?\\) (forward-char 2))
-	     ((memq (char-after (point)) '(?\" ?')) (forward-sexp 1))))
-	  (looking-at "#+[\t ]*"))
-	(setq has-comment t)
-	(setq comment-fill-prefix
-	      (concat (make-string (current-column) ? )
-		      (buffer-substring (match-beginning 0) (match-end 0)))))))
-
-    (if (not has-comment)
-	(fill-paragraph justify)
-
-      ;; Narrow to include only the comment, and then fill the region.
-      (save-restriction
-	(narrow-to-region
-
-	 ;; Find the first line we should include in the region to fill.
-	 (save-excursion
-	   (while (and (zerop (forward-line -1))
-		       (looking-at "^[ \t]*#")))
-
-	   ;; We may have gone to far.  Go forward again.
-	   (or (looking-at "^[ \t]*#")
-	       (forward-line 1))
-	   (point))
-
-	 ;; Find the beginning of the first line past the region to fill.
-	 (save-excursion
-	   (while (progn (forward-line 1)
-			 (looking-at "^[ \t]*#")))
-	   (point)))
-
-	;; Lines with only hashes on them can be paragraph boundaries.
-	(let ((paragraph-start (concat paragraph-start "\\|[ \t#]*$"))
-	      (paragraph-separate (concat paragraph-separate "\\|[ \t#]*$"))
-	      (fill-prefix comment-fill-prefix))
-	  ;;(message "paragraph-start %S paragraph-separate %S"
-	  ;;paragraph-start paragraph-separate)
-	  (fill-paragraph justify))))
-    t))
-
-
-(defun py-fill-string (start &optional justify)
-  "Fill the paragraph around (point) in the string starting at start"
-  ;; basic strategy: narrow to the string and call the default
-  ;; implementation
-  (let (;; the start of the string's contents
-	string-start
-	;; the end of the string's contents
-	string-end
-	;; length of the string's delimiter
-	delim-length
-	;; The string delimiter
-	delim
-	)
-
-    (save-excursion
-      (goto-char start)
-      (if (looking-at "\\('''\\|\"\"\"\\|'\\|\"\\)\\\\?\n?")
-	  (setq string-start (match-end 0)
-		delim-length (- (match-end 1) (match-beginning 1))
-		delim (buffer-substring-no-properties (match-beginning 1)
-						      (match-end 1)))
-	(error "The parameter start is not the beginning of a python string"))
-
-      ;; if the string is the first token on a line and doesn't start with
-      ;; a newline, fill as if the string starts at the beginning of the
-      ;; line. this helps with one line docstrings
-      (save-excursion
-	(beginning-of-line)
-	(and (/= (char-before string-start) ?\n)
-	     (looking-at (concat "[ \t]*" delim))
-	     (setq string-start (point))))
-
-      (forward-sexp (if (= delim-length 3) 2 1))
-
-      ;; with both triple quoted strings and single/double quoted strings
-      ;; we're now directly behind the first char of the end delimiter
-      ;; (this doesn't work correctly when the triple quoted string
-      ;; contains the quote mark itself). The end of the string's contents
-      ;; is one less than point
-      (setq string-end (1- (point))))
-
-    ;; Narrow to the string's contents and fill the current paragraph
-    (save-restriction
-      (narrow-to-region string-start string-end)
-      (let ((ends-with-newline (= (char-before (point-max)) ?\n)))
-	(fill-paragraph justify)
-	(if (and (not ends-with-newline)
-		 (= (char-before (point-max)) ?\n))
-	    ;; the default fill-paragraph implementation has inserted a
-	    ;; newline at the end. Remove it again.
-	    (save-excursion
-	      (goto-char (point-max))
-	      (delete-char -1)))))
-
-    ;; return t to indicate that we've done our work
-    t))
-
-(defun py-fill-paragraph (&optional justify)
-  "Like \\[fill-paragraph], but handle Python comments and strings.
-If any of the current line is a comment, fill the comment or the
-paragraph of it that point is in, preserving the comment's indentation
-and initial `#'s.
-If point is inside a string, narrow to that string and fill.
-"
-  (interactive "P")
-  ;; fill-paragraph will narrow incorrectly
-  (save-restriction
-    (widen)
-    (let* ((bod (py-point 'bod))
-	   (pps (parse-partial-sexp bod (point))))
-      (cond
-       ;; are we inside a comment or on a line with only whitespace before
-       ;; the comment start?
-       ((or (nth 4 pps)
-	    (save-excursion (beginning-of-line) (looking-at "[ \t]*#")))
-	(py-fill-comment justify))
-       ;; are we inside a string?
-       ((nth 3 pps)
-	(py-fill-string (nth 8 pps)))
-       ;; are we at the opening quote of a string, or in the indentation?
-       ((save-excursion
-	  (forward-word 1)
-	  (eq (py-in-literal) 'string))
-	(save-excursion
-	  (py-fill-string (py-point 'boi))))
-       ;; are we at or after the closing quote of a string?
-       ((save-excursion
-	  (backward-word 1)
-	  (eq (py-in-literal) 'string))
-	(save-excursion
-	  (py-fill-string (py-point 'boi))))
-       ;; otherwise use the default
-       (t
-	(fill-paragraph justify))))))
-
-
-
-(provide 'python-mode)
-;;; python-mode.el ends here