1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
;; Register commands for Emacs.
;; Copyright (C) 1985 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; 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 1, 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
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; 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, 675 Mass Ave, Cambridge, MA 02139, USA.
(defvar register-alist nil
"Alist of elements (NAME . CONTENTS), one for each Emacs register.
NAME is a character (a number). CONTENTS is a string, number,
mark or list. A list represents a rectangle; its elements are strings.")
(defun get-register (char)
"Return contents of Emacs register named CHAR, or nil if none."
(cdr (assq char register-alist)))
(defun set-register (char value)
"Set contents of Emacs register named CHAR to VALUE."
(let ((aelt (assq char register-alist)))
(if aelt
(setcdr aelt value)
(setq aelt (cons char value))
(setq register-alist (cons aelt register-alist)))))
(defun point-to-register (char)
"Store current location of point in a register.
Argument is a character, naming the register."
(interactive "cPoint to register: ")
(set-register char (point-marker)))
(defun register-to-point (char)
"Move point to location stored in a register.
Argument is a character, naming the register."
(interactive "cRegister to point: ")
(let ((val (get-register char)))
(if (markerp val)
(progn
(switch-to-buffer (marker-buffer val))
(goto-char val))
(error "Register doesn't contain a buffer position"))))
;(defun number-to-register (arg char)
; "Store a number in a register.
;Two args, NUMBER and REGISTER (a character, naming the register).
;If NUMBER is nil, digits in the buffer following point are read
;to get the number to store.
;Interactively, NUMBER is the prefix arg (none means nil)."
; (interactive "P\ncNumber to register: ")
; (set-register char
; (if arg
; (prefix-numeric-value arg)
; (if (looking-at "[0-9][0-9]*")
; (save-excursion
; (save-restriction
; (narrow-to-region (point)
; (progn (skip-chars-forward "0-9")
; (point)))
; (goto-char (point-min))
; (read (current-buffer))))
; 0))))
;(defun increment-register (arg char)
; "Add NUMBER to the contents of register REGISTER.
;Interactively, NUMBER is the prefix arg (none means nil)."
; (interactive "p\ncNumber to register: ")
; (or (integerp (get-register char))
; (error "Register does not contain a number"))
; (set-register char (+ arg (get-register char))))
(defun view-register (char)
"Display what is contained in register named REGISTER.
REGISTER is a character."
(interactive "cView register: ")
(let ((val (get-register char)))
(if (null val)
(message "Register %s is empty" (single-key-description char))
(with-output-to-temp-buffer "*Output*"
(princ "Register ")
(princ (single-key-description char))
(princ " contains ")
(if (integerp val)
(princ val)
(if (markerp val)
(progn
(princ "a buffer position:\nbuffer ")
(princ (buffer-name (marker-buffer val)))
(princ ", position ")
(princ (+ 0 val)))
(if (consp val)
(progn
(princ "the rectangle:\n")
(while val
(princ (car val))
(terpri)
(setq val (cdr val))))
(princ "the string:\n")
(princ val))))))))
(defun insert-register (char &optional arg)
"Insert contents of register REG. REG is a character.
Normally puts point before and mark after the inserted text.
If optional second arg is non-nil, puts mark before and point after.
Interactively, second arg is non-nil if prefix arg is supplied."
(interactive "cInsert register: \nP")
(push-mark)
(let ((val (get-register char)))
(if (consp val)
(insert-rectangle val)
(if (stringp val)
(insert val)
(if (or (integerp val) (markerp val))
(princ (+ 0 val) (current-buffer))
(error "Register does not contain text")))))
(or arg (exchange-point-and-mark)))
(defun copy-to-register (char start end &optional delete-flag)
"Copy region into register REG.
With prefix arg, delete as well.
Called from program, takes four args:
REG, START, END and DELETE-FLAG.
START and END are buffer positions indicating what to copy."
(interactive "cCopy to register: \nr\nP")
(set-register char (buffer-substring start end))
(if delete-flag (delete-region start end)))
(defun append-to-register (char start end &optional delete-flag)
"Append region to text in register REG.
With prefix arg, delete as well.
Called from program, takes four args:
REG, START, END and DELETE-FLAG.
START and END are buffer positions indicating what to append."
(interactive "cAppend to register: \nr\nP")
(or (stringp (get-register char))
(error "Register does not contain text"))
(set-register char (concat (get-register char)
(buffer-substring start end)))
(if delete-flag (delete-region start end)))
(defun prepend-to-register (char start end &optional delete-flag)
"Prepend region to text in register REG.
With prefix arg, delete as well.
Called from program, takes four args:
REG, START, END and DELETE-FLAG.
START and END are buffer positions indicating what to prepend."
(interactive "cPrepend to register: \nr\nP")
(or (stringp (get-register char))
(error "Register does not contain text"))
(set-register char (concat (buffer-substring start end)
(get-register char)))
(if delete-flag (delete-region start end)))
(defun copy-rectangle-to-register (char start end &optional delete-flag)
"Copy rectangular region into register REG.
With prefix arg, delete as well.
Called from program, takes four args:
REG, START, END and DELETE-FLAG.
START and END are buffer positions giving two corners of rectangle."
(interactive "cCopy rectangle to register: \nr\nP")
(set-register char
(if delete-flag
(delete-extract-rectangle start end)
(extract-rectangle start end))))
|
