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428
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1 ;;; cmdloop.el --- support functions for the top-level command loop.
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2
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3 ;; Copyright (C) 1992-4, 1997 Free Software Foundation, Inc.
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1333
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4 ;; Copyright (C) 2001, 2002, 2003 Ben Wing.
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428
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5
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6 ;; Author: Richard Mlynarik
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7 ;; Date: 8-Jul-92
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8 ;; Maintainer: XEmacs Development Team
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9 ;; Keywords: internal, dumped
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10
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11 ;; This file is part of XEmacs.
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12
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13 ;; XEmacs is free software; you can redistribute it and/or modify it
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14 ;; under the terms of the GNU General Public License as published by
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15 ;; the Free Software Foundation; either version 2, or (at your option)
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16 ;; any later version.
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17
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18 ;; XEmacs is distributed in the hope that it will be useful, but
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19 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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21 ;; General Public License for more details.
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22
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23 ;; You should have received a copy of the GNU General Public License
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24 ;; along with XEmacs; see the file COPYING. If not, write to the
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25 ;; Free Software Foundation, 59 Temple Place - Suite 330,
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26 ;; Boston, MA 02111-1307, USA.
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27
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28 ;;; Synched up with: FSF 19.30. (Some of the stuff below is in FSF's subr.el.)
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1333
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29 ;;; Some parts synched with FSF 21.2.
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428
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30
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31 ;;; Commentary:
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32
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33 ;; This file is dumped with XEmacs.
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34
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35 ;;; Code:
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36
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37 (defun recursion-depth ()
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38 "Return the current depth in recursive edits."
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39 (+ command-loop-level (minibuffer-depth)))
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40
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41 (defun top-level ()
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42 "Exit all recursive editing levels."
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43 (interactive)
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44 (throw 'top-level nil))
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45
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46 (defun exit-recursive-edit ()
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47 "Exit from the innermost recursive edit or minibuffer."
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48 (interactive)
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49 (if (> (recursion-depth) 0)
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50 (throw 'exit nil))
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51 (error "No recursive edit is in progress"))
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52
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53 (defun abort-recursive-edit ()
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54 "Abort the command that requested this recursive edit or minibuffer input."
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55 (interactive)
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56 (if (> (recursion-depth) 0)
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57 (throw 'exit t))
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58 (error "No recursive edit is in progress"))
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59
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60 ;; (defun keyboard-quit ()
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61 ;; "Signal a `quit' condition."
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62 ;; (interactive)
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63 ;; (deactivate-mark)
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64 ;; (signal 'quit nil))
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65
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66 ;; moved here from pending-del.
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67 (defun keyboard-quit ()
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68 "Signal a `quit' condition.
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69 If this character is typed while lisp code is executing, it will be treated
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70 as an interrupt.
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71 If this character is typed at top-level, this simply beeps.
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72 If `zmacs-regions' is true, and the zmacs region is active in this buffer,
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73 then this key deactivates the region without beeping or signalling."
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74 (interactive)
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2611
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75 (if (region-active-p)
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428
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76 ;; pseudo-zmacs compatibility: don't beep if this ^G is simply
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77 ;; deactivating the region. If it is inactive, beep.
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78 nil
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79 (signal 'quit nil)))
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80
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81 (defvar buffer-quit-function nil
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82 "Function to call to \"quit\" the current buffer, or nil if none.
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83 \\[keyboard-escape-quit] calls this function when its more local actions
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84 \(such as cancelling a prefix argument, minibuffer or region) do not apply.")
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85
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86 (defun keyboard-escape-quit ()
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87 "Exit the current \"mode\" (in a generalized sense of the word).
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88 This command can exit an interactive command such as `query-replace',
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89 can clear out a prefix argument or a region,
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90 can get out of the minibuffer or other recursive edit,
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91 cancel the use of the current buffer (for special-purpose buffers),
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92 or go back to just one window (by deleting all but the selected window)."
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93 (interactive)
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94 (cond ((eq last-command 'mode-exited) nil)
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95 ((> (minibuffer-depth) 0)
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96 (abort-recursive-edit))
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97 (current-prefix-arg
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98 nil)
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99 ((region-active-p)
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100 (zmacs-deactivate-region))
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101 ((> (recursion-depth) 0)
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102 (exit-recursive-edit))
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103 (buffer-quit-function
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104 (funcall buffer-quit-function))
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105 ((not (one-window-p t))
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106 (delete-other-windows))
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107 ((string-match "^ \\*" (buffer-name (current-buffer)))
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108 (bury-buffer))))
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109
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110 ;; `cancel-mode-internal' is a function of a misc-user event, which is
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111 ;; queued when window system directs XEmacs frame to cancel any modal
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112 ;; behavior it exposes, like mouse pointer grabbing.
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113 ;;
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114 ;; This function does nothing at the top level, but the code which
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115 ;; runs modal event loops, such as selection drag loop in `mouse-track',
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116 ;; check if misc-user function symbol is `cancel-mode-internal', and
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117 ;; takes necessary cleanup actions.
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118 (defun cancel-mode-internal (object)
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119 (setq zmacs-region-stays t))
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120
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121 ;; Someone wrote: "This should really be a ring of last errors."
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122 ;;
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123 ;; But why bother? This stuff is not all that necessary now that we
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124 ;; have message log, anyway.
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125 (defvar last-error nil
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126 "Object describing the last signaled error.")
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127
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128 (defcustom errors-deactivate-region nil
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129 "*Non-nil means that errors will cause the region to be deactivated."
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130 :type 'boolean
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131 :group 'editing-basics)
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132
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133 (defun command-error (error-object)
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771
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134 ;; if you want a backtrace before exiting, set stack-trace-on-error.
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135 (let* ((inhibit-quit t)
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442
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136 (debug-on-error nil)
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137 (etype (car-safe error-object)))
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428
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138 (setq quit-flag nil)
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139 (setq standard-output t)
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140 (setq standard-input t)
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141 (setq executing-kbd-macro nil)
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142 (and errors-deactivate-region
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143 (zmacs-deactivate-region))
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144 (discard-input)
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145
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146 (setq last-error error-object)
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147
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148 (message nil)
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149 (ding nil (cond ((eq etype 'undefined-keystroke-sequence)
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150 (if (and (vectorp (nth 1 error-object))
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151 (/= 0 (length (nth 1 error-object)))
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152 (button-event-p (aref (nth 1 error-object) 0)))
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153 'undefined-click
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154 'undefined-key))
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155 ((eq etype 'quit)
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156 'quit)
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157 ((memq etype '(end-of-buffer beginning-of-buffer))
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158 'buffer-bound)
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159 ((eq etype 'buffer-read-only)
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160 'read-only)
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161 (t 'command-error)))
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162 (display-error error-object t)
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163
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164 (if (noninteractive)
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165 (progn
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166 (message "\n%s exiting.\n" emacs-program-name)
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428
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167 (kill-emacs -1)))
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168 t))
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169
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170 (defun describe-last-error ()
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171 "Redisplay the last error-message. See the variable `last-error'."
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172 (interactive)
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173 (if last-error
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174 (with-displaying-help-buffer
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175 (lambda ()
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176 (princ "Last error was:\n" standard-output)
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177 (display-error last-error standard-output)))
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178 (message "No error yet")))
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179
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180
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181 ;;#### Must be done later in the loadup sequence
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182 ;(define-key (symbol-function 'help-command) "e" 'describe-last-error)
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183
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184
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185 (defun truncate-command-history-for-gc ()
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186 (let ((tail (nthcdr 30 command-history)))
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187 (if tail (setcdr tail nil)))
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188 (let ((tail (nthcdr 30 values)))
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189 (if tail (setcdr tail nil)))
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190 )
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191
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192 (add-hook 'pre-gc-hook 'truncate-command-history-for-gc)
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193
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194
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195 ;;;; Object-oriented programming at its finest
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196
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197 ;; Now in src/print.c; used by Ferror_message_string and others
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198 ;(defun display-error (error-object stream) ;(defgeneric report-condition ...)
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199 ; "Display `error-object' on `stream' in a user-friendly way."
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200 ; (funcall (or (let ((type (car-safe error-object)))
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201 ; (catch 'error
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202 ; (and (consp error-object)
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203 ; (symbolp type)
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204 ; ;;(stringp (get type 'error-message))
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205 ; (consp (get type 'error-conditions))
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206 ; (let ((tail (cdr error-object)))
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207 ; (while (not (null tail))
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208 ; (if (consp tail)
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209 ; (setq tail (cdr tail))
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210 ; (throw 'error nil)))
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211 ; t)
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212 ; ;; (check-type condition condition)
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213 ; (get type 'error-conditions)
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214 ; ;; Search class hierarchy
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215 ; (let ((tail (get type 'error-conditions)))
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216 ; (while (not (null tail))
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217 ; (cond ((not (and (consp tail)
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218 ; (symbolp (car tail))))
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219 ; (throw 'error nil))
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220 ; ((get (car tail) 'display-error)
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221 ; (throw 'error (get (car tail)
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222 ; 'display-error)))
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223 ; (t
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224 ; (setq tail (cdr tail)))))
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225 ; ;; Default method
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226 ; #'(lambda (error-object stream)
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227 ; (let ((type (car error-object))
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228 ; (tail (cdr error-object))
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229 ; (first t)
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230 ; (print-message-label 'error))
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231 ; (if (eq type 'error)
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232 ; (progn (princ (car tail) stream)
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233 ; (setq tail (cdr tail)))
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234 ; (princ (or (gettext (get type 'error-message)) type)
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235 ; stream))
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236 ; (while tail
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237 ; (princ (if first ": " ", ") stream)
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238 ; (prin1 (car tail) stream)
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239 ; (setq tail (cdr tail)
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240 ; first nil))))))))
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241 ; #'(lambda (error-object stream)
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242 ; (princ (gettext "Peculiar error ") stream)
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243 ; (prin1 error-object stream)))
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244 ; error-object stream))
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245
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246 (put 'file-error 'display-error
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247 #'(lambda (error-object stream)
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1346
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248 (let ((type (car error-object))
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249 (tail (cdr error-object))
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250 (first t)
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251 (print-message-label 'error))
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252 (if (eq type 'file-error)
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253 (progn (princ (car tail) stream)
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254 (setq tail (cdr tail)))
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255 (princ (or (gettext (get type 'error-message)) type)
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256 stream))
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257 (while tail
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258 (princ (if first ": " ", ") stream)
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259 (prin1 (car tail) stream)
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260 (setq tail (cdr tail)
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261 first nil)))))
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428
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262
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263 (put 'undefined-keystroke-sequence 'display-error
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264 #'(lambda (error-object stream)
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265 (princ (key-description (car (cdr error-object))) stream)
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266 ;; #### I18N3: doesn't localize properly.
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267 (princ (gettext " not defined.") stream) ; doo dah, doo dah.
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268 ))
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269
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270
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271 (defcustom teach-extended-commands-p t
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272 "*If true, then `\\[execute-extended-command]' will teach you keybindings.
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273 Any time you execute a command with \\[execute-extended-command] which has a
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274 shorter keybinding, you will be shown the alternate binding before the
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275 command executes. There is a short pause after displaying the binding,
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276 before executing it; the length can be controlled by
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277 `teach-extended-commands-timeout'."
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278 :type 'boolean
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279 :group 'keyboard)
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280
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281 (defcustom teach-extended-commands-timeout 4
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282 "*How long to pause after displaying a keybinding before executing.
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283 The value is measured in seconds. This only applies if
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284 `teach-extended-commands-p' is true."
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285 :type 'number
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286 :group 'keyboard)
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287
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288 ;That damn RMS went off and implemented something differently, after
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289 ;we had already implemented it. We can't support both properly until
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290 ;we have Lisp magic variables.
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291 ;(defvar suggest-key-bindings t
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292 ; "*FSFmacs equivalent of `teach-extended-commands-*'.
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293 ;Provided for compatibility only.
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294 ;Non-nil means show the equivalent key-binding when M-x command has one.
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295 ;The value can be a length of time to show the message for.
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296 ;If the value is non-nil and not a number, we wait 2 seconds.")
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297 ;
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298 ;(make-obsolete-variable 'suggest-key-bindings 'teach-extended-commands-p)
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299
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300 (defun execute-extended-command (prefix-arg)
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301 "Read a command name from the minibuffer using 'completing-read'.
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302 Then call the specified command using 'command-execute' and return its
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303 return value. If the command asks for a prefix argument, supply the
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304 value of the current raw prefix argument, or the value of PREFIX-ARG
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305 when called from Lisp."
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306 (interactive "P")
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307 ;; Note: This doesn't hack "this-command-keys"
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308 (let ((prefix-arg prefix-arg))
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309 (setq this-command (read-command
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310 ;; Note: this has the hard-wired
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311 ;; "C-u" and "M-x" string bug in common
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613
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312 ;; with all Emacs's.
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428
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313 ;; (i.e. it prints C-u and M-x regardless of
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314 ;; whether some other keys were actually bound
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315 ;; to `execute-extended-command' and
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316 ;; `universal-argument'.
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317 (cond ((eq prefix-arg '-)
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318 "- M-x ")
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319 ((equal prefix-arg '(4))
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320 "C-u M-x ")
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321 ((integerp prefix-arg)
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322 (format "%d M-x " prefix-arg))
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323 ((and (consp prefix-arg)
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324 (integerp (car prefix-arg)))
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325 (format "%d M-x " (car prefix-arg)))
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326 (t
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327 "M-x ")))))
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328
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329 (if (and teach-extended-commands-p
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330 (interactive-p))
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331 ;; Remember the keys, run the command, and show the keys (if
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332 ;; any). The funny variable names are a poor man's guarantee
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333 ;; that we don't get tripped by this-command doing something
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334 ;; funny. Quoth our forefathers: "We want lexical scope!"
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335 (let ((_execute_command_keys_ (where-is-internal this-command))
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336 (_execute_command_name_ this-command)) ; the name can change
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337 (command-execute this-command t)
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338 (when _execute_command_keys_
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339 ;; Normally the region is adjusted in post_command_hook;
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340 ;; however, it is not called until after we finish. It
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341 ;; looks ugly for the region to get updated after the
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342 ;; delays, so we do it now. The code below is a Lispified
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343 ;; copy of code in event-stream.c:post_command_hook().
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344 (if (and (not zmacs-region-stays)
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345 (or (not (eq (selected-window) (minibuffer-window)))
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346 (eq (zmacs-region-buffer) (current-buffer))))
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347 (zmacs-deactivate-region)
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348 (zmacs-update-region))
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349 ;; Wait for a while, so the user can see a message printed,
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350 ;; if any.
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351 (when (sit-for 1)
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352 (display-message
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353 'no-log
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354 (format (if (cdr _execute_command_keys_)
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355 "Command `%s' is bound to keys: %s"
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356 "Command `%s' is bound to key: %s")
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357 _execute_command_name_
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358 (sorted-key-descriptions _execute_command_keys_)))
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359 (sit-for teach-extended-commands-timeout)
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360 (clear-message 'no-log))))
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361 ;; Else, just run the command.
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362 (command-execute this-command t)))
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363
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364
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365 ;;; C code calls this; the underscores in the variable names are to avoid
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366 ;;; cluttering the specbind namespace (lexical scope! lexical scope!)
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367 ;;; Putting this in Lisp instead of C slows kbd macros by 50%.
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368 ;(defun command-execute (_command &optional _record-flag)
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369 ; "Execute CMD as an editor command.
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370 ;CMD must be a symbol that satisfies the `commandp' predicate.
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371 ;Optional second arg RECORD-FLAG non-nil
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372 ;means unconditionally put this command in `command-history'.
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373 ;Otherwise, that is done only if an arg is read using the minibuffer."
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374 ; (let ((_prefix prefix-arg)
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375 ; (_cmd (indirect-function _command)))
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376 ; (setq prefix-arg nil
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377 ; this-command _command
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378 ; current-prefix-arg _prefix
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379 ; zmacs-region-stays nil)
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380 ; ;; #### debug_on_next_call = 0;
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381 ; (cond ((and (symbolp _command)
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382 ; (get _command 'disabled))
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383 ; (run-hooks disabled-command-hook))
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384 ; ((or (stringp _cmd) (vectorp _cmd))
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385 ; ;; If requested, place the macro in the command history.
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386 ; ;; For other sorts of commands, call-interactively takes
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387 ; ;; care of this.
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388 ; (if _record-flag
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389 ; (setq command-history
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390 ; (cons (list 'execute-kbd-macro _cmd _prefix)
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391 ; command-history)))
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392 ; (execute-kbd-macro _cmd _prefix))
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393 ; (t
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394 ; (call-interactively _command _record-flag)))))
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395
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396 (defun y-or-n-p-minibuf (prompt)
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397 "Ask user a \"y or n\" question. Return t if answer is \"y\".
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398 Takes one argument, which is the string to display to ask the question.
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399 It should end in a space; `y-or-n-p' adds `(y or n) ' to it.
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400 No confirmation of the answer is requested; a single character is enough.
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401 Also accepts Space to mean yes, or Delete to mean no."
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402 (save-excursion
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403 (let* ((pre "")
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404 (yn (gettext "(y or n) "))
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405 ;; we need to translate the prompt ourselves because of the
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406 ;; strange way we handle it.
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407 (prompt (gettext prompt))
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408 event)
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409 (while (stringp yn)
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410 (if (let ((cursor-in-echo-area t)
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411 (inhibit-quit t))
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412 (message "%s%s%s" pre prompt yn)
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413 (setq event (next-command-event event))
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414 (condition-case nil
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415 (prog1
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416 (or quit-flag (eq 'keyboard-quit (key-binding event)))
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417 (setq quit-flag nil))
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418 (wrong-type-argument t)))
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419 (progn
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420 (message "%s%s%s%s" pre prompt yn (single-key-description event))
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421 (setq quit-flag nil)
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422 (signal 'quit '())))
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423 (let* ((keys (events-to-keys (vector event)))
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424 (def (lookup-key query-replace-map keys)))
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425 (cond ((eq def 'skip)
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426 (message "%s%sNo" prompt yn)
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427 (setq yn nil))
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428 ((eq def 'act)
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429 (message "%s%sYes" prompt yn)
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430 (setq yn t))
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431 ((eq def 'recenter)
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432 (recenter))
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433 ((or (eq def 'quit) (eq def 'exit-prefix))
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434 (signal 'quit '()))
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435 ((button-release-event-p event) ; ignore them
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436 nil)
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|
437 (t
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|
438 (message "%s%s%s%s" pre prompt yn
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|
439 (single-key-description event))
|
|
|
440 (ding nil 'y-or-n-p)
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|
441 (discard-input)
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|
442 (if (= (length pre) 0)
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|
|
443 (setq pre (gettext "Please answer y or n. ")))))))
|
|
|
444 yn)))
|
|
|
445
|
|
|
446 (defun yes-or-no-p-minibuf (prompt)
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447 "Ask user a yes-or-no question. Return t if answer is yes.
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448 Takes one argument, which is the string to display to ask the question.
|
|
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449 It should end in a space; `yes-or-no-p' adds `(yes or no) ' to it.
|
|
|
450 The user must confirm the answer with RET,
|
|
|
451 and can edit it until it has been confirmed."
|
|
|
452 (save-excursion
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|
|
453 (let ((p (concat (gettext prompt) (gettext "(yes or no) ")))
|
|
|
454 (ans ""))
|
|
|
455 (while (stringp ans)
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|
|
456 (setq ans (downcase (read-string p nil t))) ;no history
|
|
|
457 (cond ((string-equal ans (gettext "yes"))
|
|
|
458 (setq ans t))
|
|
|
459 ((string-equal ans (gettext "no"))
|
|
|
460 (setq ans nil))
|
|
|
461 (t
|
|
|
462 (ding nil 'yes-or-no-p)
|
|
|
463 (discard-input)
|
|
|
464 (message "Please answer yes or no.")
|
|
|
465 (sleep-for 2))))
|
|
|
466 ans)))
|
|
|
467
|
|
442
|
468 (defun yes-or-no-p (prompt)
|
|
|
469 "Ask user a yes-or-no question. Return t if answer is yes.
|
|
|
470 The question is asked with a dialog box or the minibuffer, as appropriate.
|
|
|
471 Takes one argument, which is the string to display to ask the question.
|
|
|
472 It should end in a space; `yes-or-no-p' adds `(yes or no) ' to it.
|
|
|
473 The user must confirm the answer with RET,
|
|
|
474 and can edit it until it as been confirmed."
|
|
|
475 (if (should-use-dialog-box-p)
|
|
|
476 (yes-or-no-p-dialog-box prompt)
|
|
|
477 (yes-or-no-p-minibuf prompt)))
|
|
|
478
|
|
|
479 (defun y-or-n-p (prompt)
|
|
|
480 "Ask user a \"y or n\" question. Return t if answer is \"y\".
|
|
|
481 Takes one argument, which is the string to display to ask the question.
|
|
|
482 The question is asked with a dialog box or the minibuffer, as appropriate.
|
|
|
483 It should end in a space; `y-or-n-p' adds `(y or n) ' to it.
|
|
|
484 No confirmation of the answer is requested; a single character is enough.
|
|
|
485 Also accepts Space to mean yes, or Delete to mean no."
|
|
|
486 (if (should-use-dialog-box-p)
|
|
|
487 (yes-or-no-p-dialog-box prompt)
|
|
|
488 (y-or-n-p-minibuf prompt)))
|
|
|
489
|
|
428
|
490
|
|
|
491
|
|
|
492 (defun read-char ()
|
|
|
493 "Read a character from the command input (keyboard or macro).
|
|
|
494 If a mouse click or non-ASCII character is detected, an error is
|
|
|
495 signalled. The character typed is returned as an ASCII value. This
|
|
|
496 is most likely the wrong thing for you to be using: consider using
|
|
|
497 the `next-command-event' function instead."
|
|
|
498 (save-excursion
|
|
|
499 (let ((event (next-command-event)))
|
|
|
500 (or inhibit-quit
|
|
|
501 (and (event-matches-key-specifier-p event (quit-char))
|
|
|
502 (signal 'quit nil)))
|
|
|
503 (prog1 (or (event-to-character event)
|
|
|
504 ;; Kludge. If the event we read was a mouse-release,
|
|
|
505 ;; discard it and read the next one.
|
|
|
506 (if (button-release-event-p event)
|
|
|
507 (event-to-character (next-command-event event)))
|
|
|
508 (error "Key read has no ASCII equivalent %S" event))
|
|
|
509 ;; this is not necessary, but is marginally more efficient than GC.
|
|
|
510 (deallocate-event event)))))
|
|
|
511
|
|
|
512 (defun read-char-exclusive ()
|
|
|
513 "Read a character from the command input (keyboard or macro).
|
|
|
514 If a mouse click or non-ASCII character is detected, it is discarded.
|
|
|
515 The character typed is returned as an ASCII value. This is most likely
|
|
|
516 the wrong thing for you to be using: consider using the
|
|
|
517 `next-command-event' function instead."
|
|
|
518 (let (event ch)
|
|
|
519 (while (progn
|
|
|
520 (setq event (next-command-event))
|
|
|
521 (or inhibit-quit
|
|
|
522 (and (event-matches-key-specifier-p event (quit-char))
|
|
|
523 (signal 'quit nil)))
|
|
|
524 (setq ch (event-to-character event))
|
|
|
525 (deallocate-event event)
|
|
|
526 (null ch)))
|
|
|
527 ch))
|
|
|
528
|
|
1333
|
529 ;;;; Input and display facilities.
|
|
|
530
|
|
|
531 ;; BEGIN SYNCHED WITH FSF 21.2.
|
|
|
532
|
|
|
533 (defvar read-quoted-char-radix 8
|
|
|
534 "*Radix for \\[quoted-insert] and other uses of `read-quoted-char'.
|
|
|
535 Legitimate radix values are 8, 10 and 16.")
|
|
|
536
|
|
|
537 (custom-declare-variable-early
|
|
|
538 'read-quoted-char-radix 8
|
|
|
539 "*Radix for \\[quoted-insert] and other uses of `read-quoted-char'.
|
|
|
540 Legitimate radix values are 8, 10 and 16."
|
|
|
541 :type '(choice (const 8) (const 10) (const 16))
|
|
|
542 :group 'editing-basics)
|
|
|
543
|
|
428
|
544 (defun read-quoted-char (&optional prompt)
|
|
1333
|
545 "Like `read-char', but do not allow quitting.
|
|
|
546 Also, if the first character read is an octal digit,
|
|
|
547 we read any number of octal digits and return the
|
|
|
548 specified character code. Any nondigit terminates the sequence.
|
|
|
549 If the terminator is RET, it is discarded;
|
|
|
550 any other terminator is used itself as input.
|
|
|
551
|
|
|
552 The optional argument PROMPT specifies a string to use to prompt the user.
|
|
|
553 The variable `read-quoted-char-radix' controls which radix to use
|
|
|
554 for numeric input."
|
|
|
555 (let (;(message-log-max nil)
|
|
|
556 done (first t) (code 0) char event
|
|
428
|
557 (prompt (and prompt (gettext prompt)))
|
|
1333
|
558 )
|
|
|
559 (while (not done)
|
|
|
560 (let ((inhibit-quit first)
|
|
428
|
561 ;; Don't let C-h get the help message--only help function keys.
|
|
|
562 (help-char nil)
|
|
|
563 (help-form
|
|
|
564 "Type the special character you want to use,
|
|
1333
|
565 or the octal character code.
|
|
|
566 RET terminates the character code and is discarded;
|
|
|
567 any other non-digit terminates the character code and is then used as input."))
|
|
428
|
568 (and prompt (display-message 'prompt (format "%s-" prompt)))
|
|
|
569 (setq event (next-command-event)
|
|
2828
|
570 char (or (event-to-character event)
|
|
428
|
571 (signal 'error
|
|
|
572 (list "key read cannot be inserted in a buffer"
|
|
|
573 event))))
|
|
|
574 (if inhibit-quit (setq quit-flag nil)))
|
|
1333
|
575 ;; Translate TAB key into control-I ASCII character, and so on.
|
|
|
576 (and char
|
|
|
577 (let ((translated (lookup-key function-key-map (vector char))))
|
|
|
578 (if (arrayp translated)
|
|
|
579 (setq char (aref translated 0)))))
|
|
|
580 (cond ((null char))
|
|
|
581 ((not (characterp char))
|
|
|
582 (setq unread-command-events (list char)
|
|
|
583 done t))
|
|
|
584 ; ((/= (logand char ?\M-\^@) 0)
|
|
|
585 ; ;; Turn a meta-character into a character with the 0200 bit set.
|
|
|
586 ; (setq code (logior (logand char (lognot ?\M-\^@)) 128)
|
|
|
587 ; done t))
|
|
|
588 ((and (<= ?0 char) (< char (+ ?0 (min 10 read-quoted-char-radix))))
|
|
|
589 (setq code (+ (* code read-quoted-char-radix) (- char ?0)))
|
|
|
590 (and prompt (setq prompt (display-message 'prompt
|
|
|
591 (format "%s %c" prompt char)))))
|
|
|
592 ((and (<= ?a (downcase char))
|
|
|
593 (< (downcase char) (+ ?a -10 (min 26 read-quoted-char-radix))))
|
|
|
594 (setq code (+ (* code read-quoted-char-radix)
|
|
|
595 (+ 10 (- (downcase char) ?a))))
|
|
|
596 (and prompt (setq prompt (display-message 'prompt
|
|
|
597 (format "%s %c" prompt char)))))
|
|
|
598 ((and (not first) (eq char ?\C-m))
|
|
|
599 (setq done t))
|
|
|
600 ((not first)
|
|
|
601 (setq unread-command-events (list char)
|
|
428
|
602 done t))
|
|
1346
|
603 (t (setq code (char-to-int char)
|
|
1333
|
604 done t)))
|
|
|
605 (setq first nil))
|
|
|
606 (int-to-char code)))
|
|
|
607
|
|
|
608 ;; in passwd.el.
|
|
|
609 ; (defun read-passwd (prompt &optional confirm default)
|
|
|
610 ; "Read a password, prompting with PROMPT. Echo `.' for each character typed.
|
|
|
611 ; End with RET, LFD, or ESC. DEL or C-h rubs out. C-u kills line.
|
|
|
612 ; Optional argument CONFIRM, if non-nil, then read it twice to make sure.
|
|
|
613 ; Optional DEFAULT is a default password to use instead of empty input."
|
|
|
614 ; (if confirm
|
|
|
615 ; (let (success)
|
|
|
616 ; (while (not success)
|
|
|
617 ; (let ((first (read-passwd prompt nil default))
|
|
|
618 ; (second (read-passwd "Confirm password: " nil default)))
|
|
|
619 ; (if (equal first second)
|
|
|
620 ; (progn
|
|
|
621 ; (and (arrayp second) (fillarray second ?\0))
|
|
|
622 ; (setq success first))
|
|
|
623 ; (and (arrayp first) (fillarray first ?\0))
|
|
|
624 ; (and (arrayp second) (fillarray second ?\0))
|
|
|
625 ; (message "Password not repeated accurately; please start over")
|
|
|
626 ; (sit-for 1))))
|
|
|
627 ; success)
|
|
|
628 ; (let ((pass nil)
|
|
|
629 ; (c 0)
|
|
|
630 ; (echo-keystrokes 0)
|
|
|
631 ; (cursor-in-echo-area t))
|
|
|
632 ; (while (progn (message "%s%s"
|
|
|
633 ; prompt
|
|
|
634 ; (make-string (length pass) ?.))
|
|
|
635 ; (setq c (read-char-exclusive nil t))
|
|
|
636 ; (and (/= c ?\r) (/= c ?\n) (/= c ?\e)))
|
|
|
637 ; (clear-this-command-keys)
|
|
|
638 ; (if (= c ?\C-u)
|
|
|
639 ; (progn
|
|
|
640 ; (and (arrayp pass) (fillarray pass ?\0))
|
|
|
641 ; (setq pass ""))
|
|
|
642 ; (if (and (/= c ?\b) (/= c ?\177))
|
|
|
643 ; (let* ((new-char (char-to-string c))
|
|
|
644 ; (new-pass (concat pass new-char)))
|
|
|
645 ; (and (arrayp pass) (fillarray pass ?\0))
|
|
|
646 ; (fillarray new-char ?\0)
|
|
|
647 ; (setq c ?\0)
|
|
|
648 ; (setq pass new-pass))
|
|
|
649 ; (if (> (length pass) 0)
|
|
|
650 ; (let ((new-pass (substring pass 0 -1)))
|
|
|
651 ; (and (arrayp pass) (fillarray pass ?\0))
|
|
|
652 ; (setq pass new-pass))))))
|
|
|
653 ; (message nil)
|
|
|
654 ; (or pass default ""))))
|
|
|
655
|
|
|
656 ;; aliased to redraw-modeline, a built-in.
|
|
|
657 ; (defun force-mode-line-update (&optional all)
|
|
|
658 ; "Force the mode-line of the current buffer to be redisplayed.
|
|
|
659 ; With optional non-nil ALL, force redisplay of all mode-lines."
|
|
|
660 ; (if all (save-excursion (set-buffer (other-buffer))))
|
|
|
661 ; (set-buffer-modified-p (buffer-modified-p)))
|
|
428
|
662
|
|
|
663 (defun momentary-string-display (string pos &optional exit-char message)
|
|
|
664 "Momentarily display STRING in the buffer at POS.
|
|
|
665 Display remains until next character is typed.
|
|
|
666 If the char is EXIT-CHAR (optional third arg, default is SPC) it is swallowed;
|
|
|
667 otherwise it is then available as input (as a command if nothing else).
|
|
|
668 Display MESSAGE (optional fourth arg) in the echo area.
|
|
|
669 If MESSAGE is nil, instructions to type EXIT-CHAR are displayed there."
|
|
|
670 (or exit-char (setq exit-char ?\ ))
|
|
1333
|
671 (let ((inhibit-read-only t)
|
|
428
|
672 ;; Don't modify the undo list at all.
|
|
|
673 (buffer-undo-list t)
|
|
|
674 (modified (buffer-modified-p))
|
|
|
675 (name buffer-file-name)
|
|
|
676 insert-end)
|
|
|
677 (unwind-protect
|
|
|
678 (progn
|
|
|
679 (save-excursion
|
|
|
680 (goto-char pos)
|
|
|
681 ;; defeat file locking... don't try this at home, kids!
|
|
|
682 (setq buffer-file-name nil)
|
|
|
683 (insert-before-markers (gettext string))
|
|
|
684 (setq insert-end (point))
|
|
1333
|
685 ;; If the message end is off screen, recenter now.
|
|
|
686 (if (< (window-end nil t) insert-end)
|
|
428
|
687 (recenter (/ (window-height) 2)))
|
|
|
688 ;; If that pushed message start off the frame,
|
|
|
689 ;; scroll to start it at the top of the frame.
|
|
|
690 (move-to-window-line 0)
|
|
|
691 (if (> (point) pos)
|
|
|
692 (progn
|
|
|
693 (goto-char pos)
|
|
|
694 (recenter 0))))
|
|
|
695 (message (or message (gettext "Type %s to continue editing."))
|
|
|
696 (single-key-description exit-char))
|
|
|
697 (let ((event (save-excursion (next-command-event))))
|
|
|
698 (or (eq (event-to-character event) exit-char)
|
|
1333
|
699 (setq unread-command-events (list event)))))
|
|
428
|
700 (if insert-end
|
|
|
701 (save-excursion
|
|
|
702 (delete-region pos insert-end)))
|
|
|
703 (setq buffer-file-name name)
|
|
|
704 (set-buffer-modified-p modified))))
|
|
|
705
|
|
1333
|
706 ;; END SYNCHED WITH FSF 21.2.
|
|
|
707
|
|
428
|
708 ;;; cmdloop.el ends here
|
