;;; python.el --- silly walks for Python -*- coding: iso-8859-1 -*-
-;; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+;; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009
+;; Free Software Foundation, Inc.
;; Author: Dave Love <fx@gnu.org>
;; Maintainer: FSF
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 3, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Major mode for editing Python, with support for inferior processes.
-;; There is another Python mode, python-mode.el, used by XEmacs and
-;; maintained with Python. That isn't covered by an FSF copyright
-;; assignment, unlike this code, and seems not to be well-maintained
-;; for Emacs (though I've submitted fixes). This mode is rather
-;; simpler and is better in other ways. In particular, using the
-;; syntax functions with text properties maintained by font-lock makes
-;; it more correct with arbitrary string and comment contents.
+;; There is another Python mode, python-mode.el:
+;; http://launchpad.net/python-mode
+;; used by XEmacs, and originally maintained with Python.
+;; That isn't covered by an FSF copyright assignment (?), unlike this
+;; code, and seems not to be well-maintained for Emacs (though I've
+;; submitted fixes). This mode is rather simpler and is better in
+;; other ways. In particular, using the syntax functions with text
+;; properties maintained by font-lock makes it more correct with
+;; arbitrary string and comment contents.
;; This doesn't implement all the facilities of python-mode.el. Some
;; just need doing, e.g. catching exceptions in the inferior Python
(error nil))))))))
(defun python-comment-line-p ()
- "Return non-nil iff current line has only a comment."
+ "Return non-nil if and only if current line has only a comment."
(save-excursion
(end-of-line)
(when (eq 'comment (syntax-ppss-context (syntax-ppss)))
(looking-at (rx (or (syntax comment-start) line-end))))))
(defun python-blank-line-p ()
- "Return non-nil iff current line is blank."
+ "Return non-nil if and only if current line is blank."
(save-excursion
(beginning-of-line)
(looking-at "\\s-*$")))
'(("else" "if" "elif" "while" "for" "try" "except")
("elif" "if" "elif")
("except" "try" "except")
- ("finally" "try"))
+ ("finally" "try" "except"))
"Alist of keyword matches.
The car of an element is a keyword introducing a statement which
can close a block opened by a keyword in the cdr.")
multi-line bracketed expressions."
(beginning-of-line)
(python-beginning-of-string)
- (let ((point (point)))
+ (let (point)
(while (and (python-continuation-line-p)
- (> point (setq point (point))))
+ (if point
+ (< (point) point)
+ t))
(beginning-of-line)
(if (python-backslash-continuation-line-p)
(progn
(while (python-backslash-continuation-line-p)
(forward-line -1)))
(python-beginning-of-string)
- (python-skip-out))))
+ (python-skip-out))
+ (setq point (point))))
(back-to-indentation))
(defun python-skip-out (&optional forward syntax)
"Skip out of any nested brackets.
Skip forward if FORWARD is non-nil, else backward.
If SYNTAX is non-nil it is the state returned by `syntax-ppss' at point.
-Return non-nil iff skipping was done."
+Return non-nil if and only if skipping was done."
(let ((depth (syntax-ppss-depth (or syntax (syntax-ppss))))
(forward (if forward -1 1)))
(unless (zerop depth)
;; invoked. Would support multiple processes better.
(when (or new (not (comint-check-proc python-buffer)))
(with-current-buffer
- (let* ((cmdlist (append (python-args-to-list cmd) '("-i")))
+ (let* ((cmdlist
+ (append (python-args-to-list cmd)
+ '("-i" "-c" "import sys; sys.path.remove('')")))
(path (getenv "PYTHONPATH"))
(process-environment ; to import emacs.py
(cons (concat "PYTHONPATH="
;; Fixme: Is this actually useful?
(help-setup-xref (list 'python-describe-symbol symbol) (interactive-p))
(set (make-local-variable 'comint-redirect-subvert-readonly) t)
- (print-help-return-message))))
+ (help-print-return-message))))
(comint-redirect-send-command-to-process (format "emacs.ehelp(%S, %s)"
symbol python-imports)
"*Help*" (python-proc) nil nil))
(kill-local-variable 'python-preoutput-result))))))
(defun python-check-comint-prompt (&optional proc)
- "Return non-nil iff there's a normal prompt in the inferior buffer.
-If there isn't, it's probably not appropriate to send input to return
-Eldoc information etc. If PROC is non-nil, check the buffer for that
-process."
+ "Return non-nil if and only if there's a normal prompt in the inferior buffer.
+If there isn't, it's probably not appropriate to send input to return Eldoc
+information etc. If PROC is non-nil, check the buffer for that process."
(with-current-buffer (process-buffer (or proc (python-proc)))
(save-excursion
(save-match-data (re-search-backward ">>> \\=" nil t)))))
current line. The region shifted includes the lines in which START and
END lie. It is an error if any lines in the region are indented less than
COUNT columns."
- (interactive (if mark-active
- (list (region-beginning) (region-end) current-prefix-arg)
- (list (point) (point) current-prefix-arg)))
+ (interactive
+ (if mark-active
+ (list (region-beginning) (region-end) current-prefix-arg)
+ (list (line-beginning-position) (line-end-position) current-prefix-arg)))
(if count
(setq count (prefix-numeric-value count))
(setq count python-indent))
COUNT defaults to `python-indent'. If region isn't active, just shift
current line. The region shifted includes the lines in which START and
END lie."
- (interactive (if mark-active
- (list (region-beginning) (region-end) current-prefix-arg)
- (list (point) (point) current-prefix-arg)))
+ (interactive
+ (if mark-active
+ (list (region-beginning) (region-end) current-prefix-arg)
+ (list (line-beginning-position) (line-end-position) current-prefix-arg)))
(if count
(setq count (prefix-numeric-value count))
(setq count python-indent))
\f
;;;; Skeletons
+(defcustom python-use-skeletons nil
+ "Non-nil means template skeletons will be automagically inserted.
+This happens when pressing \"if<SPACE>\", for example, to prompt for
+the if condition."
+ :type 'boolean
+ :group 'python)
+
(define-abbrev-table 'python-mode-abbrev-table ()
"Abbrev table for Python mode."
:case-fixed t
`(progn
;; Usual technique for inserting a skeleton, but expand
;; to the original abbrev instead if in a comment or string.
- (define-abbrev python-mode-abbrev-table ,name ""
- ',function
- nil t) ; system abbrev
+ (when python-use-skeletons
+ (define-abbrev python-mode-abbrev-table ,name ""
+ ',function
+ nil t)) ; system abbrev
(define-skeleton ,function
,(format "Insert Python \"%s\" template." name)
,@elements)))))
'((< '(backward-delete-char-untabify (min python-indent
(current-column))))
(^ '(- (1+ (current-indentation))))))
- (if (featurep 'hippie-exp)
- (set (make-local-variable 'hippie-expand-try-functions-list)
- (cons 'symbol-completion-try-complete
- hippie-expand-try-functions-list)))
+ ;; Let's not mess with hippie-expand. Symbol-completion should rather be
+ ;; bound to another key, since it has different performance requirements.
+ ;; (if (featurep 'hippie-exp)
+ ;; (set (make-local-variable 'hippie-expand-try-functions-list)
+ ;; (cons 'symbol-completion-try-complete
+ ;; hippie-expand-try-functions-list)))
;; Python defines TABs as being 8-char wide.
(set (make-local-variable 'tab-width) 8)
(unless font-lock-mode (font-lock-mode 1))