Commit | Line | Data |
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896546cd | 1 | ;;; misc.el --- some nonstandard basic editing commands for Emacs |
6594deb0 | 2 | |
c90f2757 | 3 | ;; Copyright (C) 1989, 2001, 2002, 2003, 2004, 2005, |
114f9c96 | 4 | ;; 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
0d20f9a0 | 5 | |
9750e079 | 6 | ;; Maintainer: FSF |
30764597 | 7 | ;; Keywords: convenience |
bd78fa1d | 8 | ;; Package: emacs |
9750e079 | 9 | |
0d20f9a0 JB |
10 | ;; This file is part of GNU Emacs. |
11 | ||
eb3fa2cf | 12 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
0d20f9a0 | 13 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
14 | ;; the Free Software Foundation, either version 3 of the License, or |
15 | ;; (at your option) any later version. | |
0d20f9a0 JB |
16 | |
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
eb3fa2cf | 23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
0d20f9a0 | 24 | |
55535639 PJ |
25 | ;;; Commentary: |
26 | ||
e5167999 | 27 | ;;; Code: |
0d20f9a0 JB |
28 | |
29 | (defun copy-from-above-command (&optional arg) | |
30 | "Copy characters from previous nonblank line, starting just above point. | |
31 | Copy ARG characters, but not past the end of that line. | |
32 | If no argument given, copy the entire rest of the line. | |
33 | The characters copied are inserted in the buffer before point." | |
34 | (interactive "P") | |
35 | (let ((cc (current-column)) | |
36 | n | |
37 | (string "")) | |
38 | (save-excursion | |
39 | (beginning-of-line) | |
40 | (backward-char 1) | |
41 | (skip-chars-backward "\ \t\n") | |
42 | (move-to-column cc) | |
43 | ;; Default is enough to copy the whole rest of the line. | |
44 | (setq n (if arg (prefix-numeric-value arg) (point-max))) | |
45 | ;; If current column winds up in middle of a tab, | |
46 | ;; copy appropriate number of "virtual" space chars. | |
47 | (if (< cc (current-column)) | |
48 | (if (= (preceding-char) ?\t) | |
49 | (progn | |
ff26cdfe | 50 | (setq string (make-string (min n (- (current-column) cc)) ?\s)) |
0d20f9a0 JB |
51 | (setq n (- n (min n (- (current-column) cc))))) |
52 | ;; In middle of ctl char => copy that whole char. | |
53 | (backward-char 1))) | |
54 | (setq string (concat string | |
55 | (buffer-substring | |
56 | (point) | |
57 | (min (save-excursion (end-of-line) (point)) | |
58 | (+ n (point))))))) | |
59 | (insert string))) | |
6594deb0 | 60 | |
2fd8a18a LK |
61 | ;; Variation of `zap-to-char'. |
62 | ||
63 | (defun zap-up-to-char (arg char) | |
821a311f | 64 | "Kill up to, but not including ARGth occurrence of CHAR. |
2fd8a18a LK |
65 | Case is ignored if `case-fold-search' is non-nil in the current buffer. |
66 | Goes backward if ARG is negative; error if CHAR not found. | |
67 | Ignores CHAR at point." | |
68 | (interactive "p\ncZap up to char: ") | |
69 | (let ((direction (if (>= arg 0) 1 -1))) | |
70 | (kill-region (point) | |
71 | (progn | |
72 | (forward-char direction) | |
73 | (unwind-protect | |
74 | (search-forward (char-to-string char) nil nil arg) | |
75 | (backward-char direction)) | |
76 | (point))))) | |
77 | ||
9bccd1e3 JB |
78 | ;; These were added with an eye to making possible a more CCA-compatible |
79 | ;; command set; but that turned out not to be interesting. | |
80 | ||
81 | (defun mark-beginning-of-buffer () | |
82 | "Set mark at the beginning of the buffer." | |
83 | (interactive) | |
84 | (push-mark (point-min))) | |
85 | ||
86 | (defun mark-end-of-buffer () | |
87 | "Set mark at the end of the buffer." | |
88 | (interactive) | |
89 | (push-mark (point-max))) | |
90 | ||
91 | (defun upcase-char (arg) | |
2fd8a18a | 92 | "Uppercasify ARG chars starting from point. Point doesn't move." |
9bccd1e3 JB |
93 | (interactive "p") |
94 | (save-excursion | |
95 | (upcase-region (point) (progn (forward-char arg) (point))))) | |
96 | ||
97 | (defun forward-to-word (arg) | |
98 | "Move forward until encountering the beginning of a word. | |
99 | With argument, do this that many times." | |
100 | (interactive "p") | |
101 | (or (re-search-forward (if (> arg 0) "\\W\\b" "\\b\\W") nil t arg) | |
102 | (goto-char (if (> arg 0) (point-max) (point-min))))) | |
103 | ||
104 | (defun backward-to-word (arg) | |
105 | "Move backward until encountering the end of a word. | |
106 | With argument, do this that many times." | |
107 | (interactive "p") | |
108 | (forward-to-word (- arg))) | |
109 | ||
e8d24e5b JL |
110 | ;;;###autoload |
111 | (defun butterfly () | |
0f9568b7 JL |
112 | "Use butterflies to flip the desired bit on the drive platter. |
113 | Open hands and let the delicate wings flap once. The disturbance | |
114 | ripples outward, changing the flow of the eddy currents in the | |
115 | upper atmosphere. These cause momentary pockets of higher-pressure | |
116 | air to form, which act as lenses that deflect incoming cosmic rays, | |
117 | focusing them to strike the drive platter and flip the desired bit. | |
118 | You can type `M-x butterfly C-M-c' to run it. This is a permuted | |
119 | variation of `C-x M-c M-butterfly' from url `http://xkcd.com/378/'." | |
e8d24e5b JL |
120 | (interactive) |
121 | (if (yes-or-no-p "Do you really want to unleash the powers of the butterfly? ") | |
122 | (progn | |
0f9568b7 JL |
123 | (switch-to-buffer (get-buffer-create "*butterfly*")) |
124 | (erase-buffer) | |
125 | (sit-for 0) | |
0f9568b7 JL |
126 | (animate-string "Amazing physics going on..." |
127 | (/ (window-height) 2) (- (/ (window-width) 2) 12)) | |
e8d24e5b JL |
128 | (sit-for (* 5 (/ (abs (random)) (float most-positive-fixnum)))) |
129 | (message "Successfully flipped one bit!")) | |
0f9568b7 JL |
130 | (message "Well, then go to xkcd.com!") |
131 | (browse-url "http://xkcd.com/378/"))) | |
e8d24e5b | 132 | |
896546cd RS |
133 | (provide 'misc) |
134 | ||
cbee283d | 135 | ;; arch-tag: 908f7884-c19e-4388-920c-9cfa425e449b |
6594deb0 | 136 | ;;; misc.el ends here |