![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to indent.el CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Apple XNU] / GNUtools / emacs / lisp|
Return to indent.el CVS log | Up to [Apple XNU] / GNUtools / emacs / lisp |
1.1 root 1: ;; Indentation commands for Emacs
2: ;; Copyright (C) 1985 Free Software Foundation, Inc.
3:
4: ;; This file is part of GNU Emacs.
5:
6: ;; GNU Emacs is free software; you can redistribute it and/or modify
7: ;; it under the terms of the GNU General Public License as published by
8: ;; the Free Software Foundation; either version 1, or (at your option)
9: ;; any later version.
10:
11: ;; GNU Emacs is distributed in the hope that it will be useful,
12: ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13: ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: ;; GNU General Public License for more details.
15:
16: ;; You should have received a copy of the GNU General Public License
17: ;; along with GNU Emacs; see the file COPYING. If not, write to
18: ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
19:
20:
21: ;Now in loaddefs.el
22: ;(defvar indent-line-function
23: ; 'indent-to-left-margin
24: ; "Function to indent current line.")
25:
26: (defun indent-according-to-mode ()
27: "Indent line in proper way for current major mode."
28: (interactive)
29: (funcall indent-line-function))
30:
31: (defun indent-for-tab-command ()
32: "Indent line in proper way for current major mode."
33: (interactive)
34: (if (eq indent-line-function 'indent-to-left-margin)
35: (insert-tab)
36: (funcall indent-line-function)))
37:
38: (defun insert-tab ()
39: (if abbrev-mode
40: (expand-abbrev))
41: (if indent-tabs-mode
42: (insert ?\t)
43: (indent-to (* tab-width (1+ (/ (current-column) tab-width))))))
44:
45: (defun indent-rigidly (start end arg)
46: "Indent all lines starting in the region sideways by ARG columns.
47: Called from a program, takes three arguments, START, END and ARG."
48: (interactive "r\np")
49: (save-excursion
50: (goto-char end)
51: (setq end (point-marker))
52: (goto-char start)
53: (or (bolp) (forward-line 1))
54: (while (< (point) end)
55: (let ((indent (current-indentation)))
56: (delete-region (point) (progn (skip-chars-forward " \t") (point)))
57: (or (eolp)
58: (indent-to (max 0 (+ indent arg)) 0)))
59: (forward-line 1))
60: (move-marker end nil)))
61:
62: ;; This is the default indent-line-function,
63: ;; used in Fundamental Mode, Text Mode, etc.
64: (defun indent-to-left-margin ()
65: (or (= (current-indentation) left-margin)
66: (let (epos)
67: (save-excursion
68: (beginning-of-line)
69: (delete-region (point)
70: (progn (skip-chars-forward " \t")
71: (point)))
72: (indent-to left-margin)
73: (setq epos (point)))
74: (if (< (point) epos)
75: (goto-char epos)))))
76:
77: (defvar indent-region-function nil
78: "Function which is short cut to indent each line in region with Tab.
79: nil means really call Tab on each line.")
80:
81: (defun indent-region (start end arg)
82: "Indent each nonblank line in the region.
83: With no argument, indent each line with Tab.
84: With argument COLUMN, indent each line to that column.
85: Called from a program, takes three args: START, END and COLUMN."
86: (interactive "r\nP")
87: (if (null arg)
88: (if indent-region-function
89: (funcall indent-region-function start end)
90: (save-excursion
91: (goto-char end)
92: (setq end (point-marker))
93: (goto-char start)
94: (or (bolp) (forward-line 1))
95: (while (< (point) end)
96: (funcall indent-line-function)
97: (forward-line 1))
98: (move-marker end nil)))
99: (setq arg (prefix-numeric-value arg))
100: (save-excursion
101: (goto-char end)
102: (setq end (point-marker))
103: (goto-char start)
104: (or (bolp) (forward-line 1))
105: (while (< (point) end)
106: (delete-region (point) (progn (skip-chars-forward " \t") (point)))
107: (or (eolp)
108: (indent-to arg 0))
109: (forward-line 1))
110: (move-marker end nil))))
111:
112: (defun indent-relative-maybe ()
113: "Indent a new line like previous nonblank line."
114: (interactive)
115: (indent-relative t))
116:
117: (defun indent-relative (&optional unindented-ok)
118: "Space out to under next indent point in previous nonblank line.
119: An indent point is a non-whitespace character following whitespace.
120: If the previous nonblank line has no indent points beyond
121: the column point starts at, tab-to-tab-stop is done instead."
122: (interactive "P")
123: (if abbrev-mode (expand-abbrev))
124: (let ((start-column (current-column))
125: indent)
126: (save-excursion
127: (beginning-of-line)
128: (if (re-search-backward "^[^\n]" nil t)
129: (let ((end (save-excursion (forward-line 1) (point))))
130: (move-to-column start-column)
131: ;; Is start-column inside a tab on this line?
132: (if (> (current-column) start-column)
133: (backward-char 1))
134: (or (looking-at "[ \t]")
135: unindented-ok
136: (skip-chars-forward "^ \t" end))
137: (skip-chars-forward " \t" end)
138: (or (= (point) end) (setq indent (current-column))))))
139: (if indent
140: (let ((opoint (point-marker)))
141: (delete-region (point) (progn (skip-chars-backward " \t") (point)))
142: (indent-to indent 0)
143: (if (> opoint (point))
144: (goto-char opoint))
145: (move-marker opoint nil))
146: (tab-to-tab-stop))))
147:
148: (defvar tab-stop-list
149: '(8 16 24 32 40 48 56 64 72 80 88 96 104 112 120)
150: "*List of tab stop positions used by tab-to-tab-stops.")
151:
152: (defvar edit-tab-stops-map nil "Keymap used in edit-tab-stops.")
153: (if edit-tab-stops-map
154: nil
155: (setq edit-tab-stops-map (make-sparse-keymap))
156: (define-key edit-tab-stops-map "\C-x\C-s" 'edit-tab-stops-note-changes)
157: (define-key edit-tab-stops-map "\C-c\C-c" 'edit-tab-stops-note-changes))
158:
159: (defvar edit-tab-stops-buffer nil
160: "Buffer whose tab stops are being edited--in case
161: the variable tab-stop-list is local in that buffer.")
162:
163: (defun edit-tab-stops ()
164: "Edit the tab stops used by tab-to-tab-stop.
165: Creates a buffer *Tab Stops* containing text describing the tab stops.
166: A colon indicates a column where there is a tab stop.
167: You can add or remove colons and then do C-c C-c to make changes take effect."
168: (interactive)
169: (setq edit-tab-stops-buffer (current-buffer))
170: (switch-to-buffer (get-buffer-create "*Tab Stops*"))
171: (use-local-map edit-tab-stops-map)
172: (make-local-variable 'indent-tabs-mode)
173: (setq indent-tabs-mode nil)
174: (overwrite-mode 1)
175: (setq truncate-lines t)
176: (erase-buffer)
177: (let ((tabs tab-stop-list))
178: (while tabs
179: (indent-to (car tabs) 0)
180: (insert ?:)
181: (setq tabs (cdr tabs))))
182: (let ((count 0))
183: (insert ?\n)
184: (while (< count 8)
185: (insert (+ count ?0))
186: (insert " ")
187: (setq count (1+ count)))
188: (insert ?\n)
189: (while (> count 0)
190: (insert "0123456789")
191: (setq count (1- count))))
192: (insert "\nTo install changes, type C-c C-c")
193: (goto-char (point-min)))
194:
195: (defun edit-tab-stops-note-changes ()
196: "Put edited tab stops into effect."
197: (interactive)
198: (let (tabs)
199: (save-excursion
200: (goto-char 1)
201: (end-of-line)
202: (while (search-backward ":" nil t)
203: (setq tabs (cons (current-column) tabs))))
204: (bury-buffer (prog1 (current-buffer)
205: (switch-to-buffer edit-tab-stops-buffer)))
206: (setq tab-stop-list tabs))
207: (message "Tab stops installed"))
208:
209: (defun tab-to-tab-stop ()
210: "Insert spaces or tabs to next defined tab-stop column.
211: The variable tab-stop-list is a list of columns at which there are tab stops.
212: Use \\[edit-tab-stops] to edit them interactively."
213: (interactive)
214: (if abbrev-mode (expand-abbrev))
215: (let ((tabs tab-stop-list))
216: (while (and tabs (>= (current-column) (car tabs)))
217: (setq tabs (cdr tabs)))
218: (if tabs
219: (indent-to (car tabs))
220: (insert ? ))))
221:
222: (define-key global-map "\t" 'indent-for-tab-command)
223: (define-key esc-map "\034" 'indent-region)
224: (define-key ctl-x-map "\t" 'indent-rigidly)
225: (define-key esc-map "i" 'tab-to-tab-stop)
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.