Barry's version 2.11 -- electric colon

Misc/python-mode-old.el

@@ -6,8 +6,8 @@
 ;;         1992-1994 Tim Peters <tim@ksr.com>
 ;; Maintainer:    bwarsaw@cnri.reston.va.us
 ;; Created:       Feb 1992
-;; Version:       2.7
-;; Last Modified: 1995/03/10 15:58:16
+;; Version:       2.11
+;; Last Modified: 1995/03/14 18:32:54
 ;; Keywords: python editing language major-mode
 
 ;; This software is provided as-is, without express or implied
@@ -36,10 +36,27 @@
 ;;	(setq auto-mode-alist
 ;;	      (cons '("\\.py$" . python-mode) auto-mode-alist))
 
+;; Here's a brief list of recent additions/improvements:
+;;
+;; - Wrapping and indentation within triple quote strings should work
+;;   properly now.
+;; - `Standard' bug reporting mechanism (use C-c C-b)
+;; - py-mark-block was moved to C-c C-m
+;; - C-c C-v shows you the python-mode version
+;; - a basic python-font-lock-keywords has been added for Emacs 19
+;;   font-lock colorizations.
+;; - proper interaction with pending-del and del-sel modes.
+;; - New py-electric-colon (:) command for improved outdenting.  Also
+;;   py-indent-line (TAB) should handle outdented lines better.
+
 ;; Here's a brief to do list:
 ;;
-;; 1. Better integration with gud-mode for debugging.
-;; 2. Rewrite according to GNU Emacs Lisp standards.
+;; - Better integration with gud-mode for debugging.
+;; - Rewrite according to GNU Emacs Lisp standards.
+;; - py-delete-char should obey numeric arguments.
+;; - even better support for outdenting.  Guido suggests outdents of
+;;   at least one level after a return, raise, break, or continue
+;;   statement.
 
 ;; If you can think of more things you'd like to see, drop me a line.
 ;; If you want to report bugs, use py-submit-bug-report (C-c C-b).
@@ -51,7 +68,7 @@
 ;; LCD Archive Entry:
 ;; python-mode|Barry A. Warsaw|bwarsaw@cnri.reston.va.us
 ;; |Major mode for editing Python programs
-;; |1995/03/10 15:58:16|2.7|
+;; |1995/03/14 18:32:54|2.11|
 
 ;;; Code:
 
@@ -222,7 +239,8 @@ Currently-active file is at the head of the list.")
   (mapcar (function
 	   (lambda (x)
 	     (define-key py-mode-map (car x) (cdr x))))
-	  '(("\C-c\C-c"  . py-execute-buffer)
+	  '((":"         . py-electric-colon)
+	    ("\C-c\C-c"  . py-execute-buffer)
 	    ("\C-c|"	 . py-execute-region)
 	    ("\C-c!"	 . py-shell)
 	    ("\177"	 . py-delete-char)
@@ -289,6 +307,15 @@ Currently-active file is at the head of the list.")
 (defconst py-blank-or-comment-re "[ \t]*\\($\\|#\\)"
   "Regexp matching blank or comment lines.")
 
+(defconst py-outdent-re
+  (concat "\\(" (mapconcat 'identity
+			   '("else:"
+			     "except\\s +.*:"
+			     "finally:"
+			     "elif\\s +.*:")
+			   "\\|")
+	  "\\)")
+  "Regexp matching clauses to be outdented one level.")
 
 
 ;;;###autoload
@@ -362,6 +389,30 @@ py-beep-if-tab-change\tring the bell if tab-width is changed"
       (run-hooks 'python-mode-hook)
     (run-hooks 'py-mode-hook)))
 
+
+;; electric characters
+(defun py-electric-colon (arg)
+  "Insert a colon.
+In certain cases the line is outdented appropriately.  If a numeric
+argument is provided, that many colons are inserted non-electrically."
+  (interactive "P")
+  (self-insert-command (prefix-numeric-value arg))
+  (let (this-indent)
+    (if (and (not arg)
+	     (save-excursion
+	       (back-to-indentation)
+	       (looking-at py-outdent-re))
+	     (= (setq this-indent (py-compute-indentation))
+		(save-excursion
+		  (forward-line -1)
+		  (py-compute-indentation)))
+	     )
+	(save-excursion
+	  (beginning-of-line)
+	  (delete-horizontal-space)
+	  (indent-to (- this-indent py-indent-offset)))
+      )))
+
 
 ;;; Functions that execute Python commands in a subprocess
 (defun py-shell ()
@@ -578,7 +629,12 @@ needed so that only a single column position is deleted."
   (interactive)
   (let* ((ci (current-indentation))
 	 (move-to-indentation-p (<= (current-column) ci))
-	 (need (py-compute-indentation)) )
+	 (need (py-compute-indentation)))
+    ;; watch for outdents
+    (if (save-excursion
+	  (back-to-indentation)
+	  (looking-at py-outdent-re))
+	(setq need (- need py-indent-offset)))
     (if (/= ci need)
 	(save-excursion
 	  (beginning-of-line)
@@ -1783,7 +1839,7 @@ local bindings to py-newline-and-indent."))
        (setq zmacs-region-stays t)))
 
 
-(defconst py-version "2.7"
+(defconst py-version "2.11"
   "`python-mode' version number.")
 (defconst py-help-address "bwarsaw@cnri.reston.va.us"
   "Address accepting submission of bug reports.")
@@ -1804,11 +1860,13 @@ With \\[universal-argument] 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 (not enhancement-p)))
+  (let ((reporter-prompt-for-summary-p (if enhancement-p
+					   "(Very) brief summary: "
+					 t)))
     (require 'reporter)
     (reporter-submit-bug-report
      py-help-address			;address
-     "python-mode"			;pkgname
+     (concat "python-mode " py-version)	;pkgname
      ;; varlist
      (if enhancement-p nil
        '(py-python-command