93 lines
3.4 KiB
EmacsLisp
93 lines
3.4 KiB
EmacsLisp
;;; prelude-python.el --- Emacs Prelude: python.el configuration.
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;;
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;; Copyright © 2011-2013 Bozhidar Batsov
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;;
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;; Author: Bozhidar Batsov <bozhidar@batsov.com>
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;; URL: https://github.com/bbatsov/prelude
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;; Version: 1.0.0
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;; Keywords: convenience
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;; This file is not part of GNU Emacs.
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;;; Commentary:
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;; Some basic configuration for python.el (the latest and greatest
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;; Python mode Emacs has to offer).
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;;; License:
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;; This program is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU General Public License
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;; as published by the Free Software Foundation; either version 3
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;; of the License, or (at your option) any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Code:
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(require 'prelude-programming)
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;; Copy pasted from ruby-mode.el
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(defun prelude-python--encoding-comment-required-p ()
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(re-search-forward "[^\0-\177]" nil t))
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(defun prelude-python--detect-encoding ()
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(let ((coding-system
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(or save-buffer-coding-system
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buffer-file-coding-system)))
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(if coding-system
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(symbol-name
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(or (coding-system-get coding-system 'mime-charset)
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(coding-system-change-eol-conversion coding-system nil)))
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"ascii-8bit")))
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(defun prelude-python--insert-coding-comment (encoding)
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(let ((newlines (if (looking-at "^\\s *$") "\n" "\n\n")))
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(insert (format "# coding: %s" encoding) newlines)))
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(defun prelude-python-mode-set-encoding ()
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"Insert a magic comment header with the proper encoding if necessary."
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(save-excursion
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(widen)
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(goto-char (point-min))
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(when (prelude-python--encoding-comment-required-p)
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(goto-char (point-min))
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(let ((coding-system (prelude-python--detect-encoding)))
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(when coding-system
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(if (looking-at "^#!") (beginning-of-line 2))
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(cond ((looking-at "\\s *#\\s *.*\\(en\\)?coding\\s *:\\s *\\([-a-z0-9_]*\\)")
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;; update existing encoding comment if necessary
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(unless (string= (match-string 2) coding-system)
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(goto-char (match-beginning 2))
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(delete-region (point) (match-end 2))
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(insert coding-system)))
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((looking-at "\\s *#.*coding\\s *[:=]"))
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(t (prelude-python--insert-coding-comment coding-system)))
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(when (buffer-modified-p)
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(basic-save-buffer-1)))))))
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(defun prelude-python-mode-defaults ()
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"Defaults for Python programming."
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(subword-mode +1)
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(setq-local electric-layout-rules
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'((?: . (lambda ()
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(if (python-info-statement-starts-block-p)
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'after)))))
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(electric-layout-mode +1)
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(add-hook 'after-save-hook 'prelude-python-mode-set-encoding nil 'local))
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(setq prelude-python-mode-hook 'prelude-python-mode-defaults)
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(add-hook 'python-mode-hook (lambda ()
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(run-hooks 'prelude-python-mode-hook)))
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(provide 'prelude-python)
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;;; prelude-python.el ends here
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