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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)
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