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1 | ;;; calc-trail.el --- functions for manipulating the Calc "trail" |
2 | ||
bf77c646 | 3 | ;; Copyright (C) 1990, 1991, 1992, 1993, 2001 Free Software Foundation, Inc. |
3132f345 CW |
4 | |
5 | ;; Author: David Gillespie <daveg@synaptics.com> | |
a1506d29 | 6 | ;; Maintainers: D. Goel <deego@gnufans.org> |
6e1c888a | 7 | ;; Colin Walters <walters@debian.org> |
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8 | |
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
12 | ;; but WITHOUT ANY WARRANTY. No author or distributor | |
13 | ;; accepts responsibility to anyone for the consequences of using it | |
14 | ;; or for whether it serves any particular purpose or works at all, | |
15 | ;; unless he says so in writing. Refer to the GNU Emacs General Public | |
16 | ;; License for full details. | |
17 | ||
18 | ;; Everyone is granted permission to copy, modify and redistribute | |
19 | ;; GNU Emacs, but only under the conditions described in the | |
20 | ;; GNU Emacs General Public License. A copy of this license is | |
21 | ;; supposed to have been given to you along with GNU Emacs so you | |
22 | ;; can know your rights and responsibilities. It should be in a | |
23 | ;; file named COPYING. Among other things, the copyright notice | |
24 | ;; and this notice must be preserved on all copies. | |
25 | ||
3132f345 | 26 | ;;; Commentary: |
136211a9 | 27 | |
3132f345 | 28 | ;;; Code: |
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29 | |
30 | ;; This file is autoloaded from calc-ext.el. | |
31 | (require 'calc-ext) | |
32 | ||
33 | (require 'calc-macs) | |
34 | ||
35 | (defun calc-Need-calc-trail () nil) | |
36 | ||
37 | ||
38 | ;;; Trail commands. | |
39 | ||
40 | (defun calc-trail-in () | |
41 | (interactive) | |
42 | (let ((win (get-buffer-window (calc-trail-display t)))) | |
bf77c646 | 43 | (and win (select-window win)))) |
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44 | |
45 | (defun calc-trail-out () | |
46 | (interactive) | |
47 | (calc-select-buffer) | |
48 | (let ((win (get-buffer-window (current-buffer)))) | |
49 | (if win | |
50 | (progn | |
51 | (select-window win) | |
52 | (calc-align-stack-window)) | |
bf77c646 | 53 | (calc)))) |
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54 | |
55 | (defun calc-trail-next (n) | |
56 | (interactive "p") | |
57 | (calc-with-trail-buffer | |
58 | (forward-line n) | |
bf77c646 | 59 | (calc-trail-here))) |
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60 | |
61 | (defun calc-trail-previous (n) | |
62 | (interactive "p") | |
63 | (calc-with-trail-buffer | |
64 | (forward-line (- n)) | |
bf77c646 | 65 | (calc-trail-here))) |
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66 | |
67 | (defun calc-trail-first (n) | |
68 | (interactive "p") | |
69 | (calc-with-trail-buffer | |
70 | (goto-char (point-min)) | |
71 | (forward-line n) | |
bf77c646 | 72 | (calc-trail-here))) |
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73 | |
74 | (defun calc-trail-last (n) | |
75 | (interactive "p") | |
76 | (calc-with-trail-buffer | |
77 | (goto-char (point-max)) | |
78 | (forward-line (- n)) | |
bf77c646 | 79 | (calc-trail-here))) |
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80 | |
81 | (defun calc-trail-scroll-left (n) | |
82 | (interactive "P") | |
83 | (let ((curwin (selected-window))) | |
84 | (calc-with-trail-buffer | |
85 | (unwind-protect | |
86 | (progn | |
87 | (select-window (get-buffer-window (current-buffer))) | |
88 | (calc-scroll-left n)) | |
bf77c646 | 89 | (select-window curwin))))) |
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90 | |
91 | (defun calc-trail-scroll-right (n) | |
92 | (interactive "P") | |
93 | (let ((curwin (selected-window))) | |
94 | (calc-with-trail-buffer | |
95 | (unwind-protect | |
96 | (progn | |
97 | (select-window (get-buffer-window (current-buffer))) | |
98 | (calc-scroll-right n)) | |
bf77c646 | 99 | (select-window curwin))))) |
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100 | |
101 | (defun calc-trail-forward (n) | |
102 | (interactive "p") | |
103 | (calc-with-trail-buffer | |
104 | (forward-line (* n (1- (window-height)))) | |
bf77c646 | 105 | (calc-trail-here))) |
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106 | |
107 | (defun calc-trail-backward (n) | |
108 | (interactive "p") | |
109 | (calc-with-trail-buffer | |
110 | (forward-line (- (* n (1- (window-height))))) | |
bf77c646 | 111 | (calc-trail-here))) |
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112 | |
113 | (defun calc-trail-isearch-forward () | |
114 | (interactive) | |
115 | (calc-with-trail-buffer | |
116 | (save-window-excursion | |
117 | (select-window (get-buffer-window (current-buffer))) | |
118 | (let ((search-exit-char ?\r)) | |
119 | (isearch-forward))) | |
bf77c646 | 120 | (calc-trail-here))) |
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121 | |
122 | (defun calc-trail-isearch-backward () | |
123 | (interactive) | |
124 | (calc-with-trail-buffer | |
125 | (save-window-excursion | |
126 | (select-window (get-buffer-window (current-buffer))) | |
127 | (let ((search-exit-char ?\r)) | |
128 | (isearch-backward))) | |
bf77c646 | 129 | (calc-trail-here))) |
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130 | |
131 | (defun calc-trail-yank (arg) | |
132 | (interactive "P") | |
133 | (calc-wrapper | |
134 | (or arg (calc-set-command-flag 'hold-trail)) | |
135 | (calc-enter-result 0 "yank" | |
136 | (calc-with-trail-buffer | |
137 | (if arg | |
138 | (forward-line (- (prefix-numeric-value arg)))) | |
139 | (if (or (looking-at "Emacs Calc") | |
140 | (looking-at "----") | |
141 | (looking-at " ? ? ?[^ \n]* *$") | |
142 | (looking-at "..?.?$")) | |
143 | (error "Can't yank that line")) | |
144 | (if (looking-at ".*, \\.\\.\\., ") | |
145 | (error "Can't yank (vector was abbreviated)")) | |
146 | (forward-char 4) | |
147 | (search-forward " ") | |
148 | (let* ((next (save-excursion (forward-line 1) (point))) | |
149 | (str (buffer-substring (point) (1- next))) | |
150 | (val (save-excursion | |
151 | (set-buffer save-buf) | |
152 | (math-read-plain-expr str)))) | |
153 | (if (eq (car-safe val) 'error) | |
154 | (error "Can't yank that line: %s" (nth 2 val)) | |
bf77c646 | 155 | val)))))) |
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156 | |
157 | (defun calc-trail-marker (str) | |
158 | (interactive "sText to insert in trail: ") | |
159 | (calc-with-trail-buffer | |
160 | (forward-line 1) | |
161 | (let ((buffer-read-only nil)) | |
162 | (insert "---- " str "\n")) | |
163 | (forward-line -1) | |
bf77c646 | 164 | (calc-trail-here))) |
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165 | |
166 | (defun calc-trail-kill (n) | |
167 | (interactive "p") | |
168 | (calc-with-trail-buffer | |
169 | (let ((buffer-read-only nil)) | |
170 | (save-restriction | |
171 | (narrow-to-region ; don't delete "Emacs Trail" header | |
172 | (save-excursion | |
173 | (goto-char (point-min)) | |
174 | (forward-line 1) | |
175 | (point)) | |
176 | (point-max)) | |
177 | (kill-line n))) | |
bf77c646 | 178 | (calc-trail-here))) |
136211a9 | 179 | |
bf77c646 | 180 | ;;; calc-trail.el ends here |