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428
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1 /* Minibuffer input and completion.
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2 Copyright (C) 1985, 1986, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Sun Microsystems, Inc.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Mule 2.0, FSF 19.28. Mule-ized except as noted.
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23 Substantially different from FSF. */
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24
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25 /* #### dmoore - All sorts of things in here can call lisp, like message.
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26 Track all this stuff. */
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27
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28 #include <config.h>
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29 #include "lisp.h"
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30
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31 #include "buffer.h"
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32 #include "commands.h"
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33 #include "console-stream.h"
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34 #include "events.h"
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35 #include "frame.h"
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36 #include "insdel.h"
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37 #include "redisplay.h"
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38 #include "window.h"
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39
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40 /* Depth in minibuffer invocations. */
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41 int minibuf_level;
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42
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43 Lisp_Object Qcompletion_ignore_case;
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44
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45 /* Nonzero means completion ignores case. */
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46 int completion_ignore_case;
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47
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48 /* List of regexps that should restrict possible completions. */
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49 Lisp_Object Vcompletion_regexp_list;
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50
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51 /* The echo area buffer. */
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52 Lisp_Object Vecho_area_buffer;
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53
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54 /* Prompt to display in front of the minibuffer contents */
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55 Lisp_Object Vminibuf_prompt;
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56
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57 /* Added on 97/3/14 by Jareth Hein (jhod@po.iijnet.or.jp) for input system support */
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58 /* String to be displayed in front of prompt of the minibuffer contents */
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59 Lisp_Object Vminibuf_preprompt;
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60
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61 /* Hook to run just after entry to minibuffer. */
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62 Lisp_Object Qminibuffer_setup_hook, Vminibuffer_setup_hook;
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63
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64 Lisp_Object Qappend_message, Qcurrent_message_label,
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65 Qclear_message, Qdisplay_message;
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66
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67
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68 DEFUN ("minibuffer-depth", Fminibuffer_depth, 0, 0, 0, /*
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69 Return current depth of activations of minibuffer, a nonnegative integer.
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70 */
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71 ())
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72 {
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73 return make_int (minibuf_level);
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74 }
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75
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76 /* The default buffer to use as the window-buffer of minibuffer windows */
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77 /* Note there is special code in kill-buffer to make this unkillable */
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78 Lisp_Object Vminibuffer_zero;
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79
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80
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81 /* Actual minibuffer invocation. */
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82
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83 static Lisp_Object
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84 read_minibuffer_internal_unwind (Lisp_Object unwind_data)
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85 {
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86 Lisp_Object frame;
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87 XWINDOW (minibuf_window)->last_modified[CURRENT_DISP] = Qzero;
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88 XWINDOW (minibuf_window)->last_modified[DESIRED_DISP] = Qzero;
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89 XWINDOW (minibuf_window)->last_modified[CMOTION_DISP] = Qzero;
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90 XWINDOW (minibuf_window)->last_facechange[CURRENT_DISP] = Qzero;
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91 XWINDOW (minibuf_window)->last_facechange[DESIRED_DISP] = Qzero;
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92 XWINDOW (minibuf_window)->last_facechange[CMOTION_DISP] = Qzero;
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93 Vminibuf_prompt = Felt (unwind_data, Qzero);
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94 minibuf_level = XINT (Felt (unwind_data, make_int (1)));
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95 while (CONSP (unwind_data))
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96 {
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97 Lisp_Object victim = unwind_data;
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98 unwind_data = XCDR (unwind_data);
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99 free_cons (XCONS (victim));
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100 }
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101
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102 /* If cursor is on the minibuffer line,
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103 show the user we have exited by putting it in column 0. */
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104 frame = Fselected_frame (Qnil);
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105 if (!noninteractive
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106 && !NILP (frame)
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107 && !NILP (XFRAME (frame)->minibuffer_window))
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108 {
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109 struct window *w = XWINDOW (XFRAME (frame)->minibuffer_window);
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110 redisplay_move_cursor (w, 0, 0);
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111 }
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112
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113 return Qnil;
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114 }
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115
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116 /* 97/4/13 jhod: Added for input methods */
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117 DEFUN ("set-minibuffer-preprompt", Fset_minibuffer_preprompt, 1, 1, 0, /*
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118 Set the minibuffer preprompt string to PREPROMPT. This is used by language
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119 input methods to relay state information to the user.
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120 */
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121 (preprompt))
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122 {
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123 if (NILP (preprompt))
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124 {
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125 Vminibuf_preprompt = Qnil;
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126 }
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127 else
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128 {
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129 CHECK_STRING (preprompt);
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130
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131 Vminibuf_preprompt = LISP_GETTEXT (preprompt);
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132 }
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133 return Qnil;
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134 }
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135
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136 DEFUN ("read-minibuffer-internal", Fread_minibuffer_internal, 1, 1, 0, /*
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137 Lowest-level interface to minibuffers. Don't call this.
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138 */
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139 (prompt))
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140 {
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141 /* This function can GC */
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142 int speccount = specpdl_depth ();
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143 Lisp_Object val;
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144
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145 CHECK_STRING (prompt);
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146
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147 single_console_state ();
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148
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149 record_unwind_protect (read_minibuffer_internal_unwind,
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150 noseeum_cons
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151 (Vminibuf_prompt,
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152 noseeum_cons (make_int (minibuf_level), Qnil)));
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153 Vminibuf_prompt = LISP_GETTEXT (prompt);
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154
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155 /* NOTE: Here (or somewhere around here), in FSFmacs 19.30,
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156 choose_minibuf_frame() is called. This is the only
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157 place in FSFmacs that it's called any more -- there's
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158 also a call in xterm.c, but commented out, and 19.28
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159 had the calls in different places.
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160
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161 choose_minibuf_frame() does the following:
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162
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163 if (!EQ (minibuf_window, selected_frame()->minibuffer_window))
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164 {
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165 Fset_window_buffer (selected_frame()->minibuffer_window,
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166 XWINDOW (minibuf_window)->buffer);
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167 minibuf_window = selected_frame()->minibuffer_window;
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168 }
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169
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170 #### Note that we don't do the set-window-buffer. This call is
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171 similar, but not identical, to a set-window-buffer call made
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172 in `read-from-minibuffer' in minibuf.el. I hope it's close
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173 enough, because minibuf_window isn't really exported to Lisp.
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174
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175 The comment above choose_minibuf_frame() reads:
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176
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177 Put minibuf on currently selected frame's minibuffer.
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178 We do this whenever the user starts a new minibuffer
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179 or when a minibuffer exits. */
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180
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181 minibuf_window = FRAME_MINIBUF_WINDOW (selected_frame ());
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182
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183 run_hook (Qminibuffer_setup_hook);
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184
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185 minibuf_level++;
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186 clear_echo_area (selected_frame (), Qnil, 0);
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187
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188 val = call_command_loop (Qt);
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189
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190 return unbind_to (speccount, val);
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191 }
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192
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193
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194
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195 /* Completion hair */
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196
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197 /* Compare exactly LEN chars of strings at S1 and S2,
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198 ignoring case if appropriate.
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199 Return -1 if strings match,
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200 else number of chars that match at the beginning. */
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201
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202 /* Note that this function works in Charcounts, unlike most functions.
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203 This is necessary for many reasons, one of which is that two
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204 strings may match even if they have different numbers of bytes,
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205 if IGNORE_CASE is true. */
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206
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207 Charcount
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442
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208 scmp_1 (const Bufbyte *s1, const Bufbyte *s2, Charcount len,
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428
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209 int ignore_case)
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210 {
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211 Charcount l = len;
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212
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213 if (ignore_case)
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214 {
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215 while (l)
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216 {
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217 Emchar c1 = DOWNCASE (current_buffer, charptr_emchar (s1));
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218 Emchar c2 = DOWNCASE (current_buffer, charptr_emchar (s2));
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219
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220 if (c1 == c2)
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221 {
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222 l--;
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223 INC_CHARPTR (s1);
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224 INC_CHARPTR (s2);
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225 }
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226 else
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227 break;
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228 }
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229 }
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230 else
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231 {
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232 while (l && charptr_emchar (s1) == charptr_emchar (s2))
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233 {
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234 l--;
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235 INC_CHARPTR (s1);
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236 INC_CHARPTR (s2);
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237 }
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238 }
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239
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240 if (l == 0)
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241 return -1;
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242 else return len - l;
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243 }
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244
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245
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246 int
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442
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247 regexp_ignore_completion_p (const Bufbyte *nonreloc,
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428
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248 Lisp_Object reloc, Bytecount offset,
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249 Bytecount length)
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250 {
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251 /* Ignore this element if it fails to match all the regexps. */
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252 if (!NILP (Vcompletion_regexp_list))
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253 {
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254 Lisp_Object regexps;
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255 EXTERNAL_LIST_LOOP (regexps, Vcompletion_regexp_list)
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256 {
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257 Lisp_Object re = XCAR (regexps);
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258 CHECK_STRING (re);
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259 if (fast_string_match (re, nonreloc, reloc, offset,
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260 length, 0, ERROR_ME, 0) < 0)
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261 return 1;
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262 }
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263 }
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264 return 0;
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265 }
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266
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267
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268 /* Callers should GCPRO, since this may call eval */
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269 static int
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270 ignore_completion_p (Lisp_Object completion_string,
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271 Lisp_Object pred, Lisp_Object completion)
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272 {
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273 if (regexp_ignore_completion_p (0, completion_string, 0, -1))
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274 return 1;
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275
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276 /* Ignore this element if there is a predicate
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277 and the predicate doesn't like it. */
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278 if (!NILP (pred))
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279 {
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280 Lisp_Object tem;
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281 if (EQ (pred, Qcommandp))
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282 tem = Fcommandp (completion);
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283 else
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284 tem = call1 (pred, completion);
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285 if (NILP (tem))
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286 return 1;
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287 }
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288 return 0;
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289 }
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290
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291
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292 /* #### Maybe we should allow ALIST to be a hash table. It is wrong
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293 for the use of obarrays to be better-rewarded than the use of
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294 hash tables. By better-rewarded I mean that you can pass an obarray
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295 to all of the completion functions, whereas you can't do anything
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296 like that with a hash table.
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297
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298 To do so, there should probably be a
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299 map_obarray_or_alist_or_hash_table function which would be used by
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300 both Ftry_completion and Fall_completions. But would the
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301 additional funcalls slow things down? */
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302
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303 DEFUN ("try-completion", Ftry_completion, 2, 3, 0, /*
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304 Return common substring of all completions of STRING in ALIST.
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305 Each car of each element of ALIST is tested to see if it begins with STRING.
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306 All that match are compared together; the longest initial sequence
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307 common to all matches is returned as a string.
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308 If there is no match at all, nil is returned.
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309 For an exact match, t is returned.
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310
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311 ALIST can be an obarray instead of an alist.
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312 Then the print names of all symbols in the obarray are the possible matches.
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313
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314 ALIST can also be a function to do the completion itself.
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315 It receives three arguments: the values STRING, PREDICATE and nil.
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316 Whatever it returns becomes the value of `try-completion'.
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317
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318 If optional third argument PREDICATE is non-nil,
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319 it is used to test each possible match.
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320 The match is a candidate only if PREDICATE returns non-nil.
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321 The argument given to PREDICATE is the alist element or the symbol from the obarray.
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322 */
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323 (string, alist, pred))
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324 {
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325 /* This function can GC */
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326 Lisp_Object bestmatch, tail;
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327 Charcount bestmatchsize = 0;
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328 int list;
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329 int indice = 0;
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330 int matchcount = 0;
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331 int obsize;
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332 Lisp_Object bucket;
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333 Charcount slength, blength;
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334
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335 CHECK_STRING (string);
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336
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337 if (CONSP (alist))
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338 {
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339 Lisp_Object tem = XCAR (alist);
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340 if (SYMBOLP (tem)) /* lambda, autoload, etc. Emacs-lisp sucks */
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341 return call3 (alist, string, pred, Qnil);
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342 else
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343 list = 1;
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344 }
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345 else if (VECTORP (alist))
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346 list = 0;
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347 else if (NILP (alist))
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348 list = 1;
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349 else
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350 return call3 (alist, string, pred, Qnil);
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351
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352 bestmatch = Qnil;
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353 blength = 0;
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354 slength = XSTRING_CHAR_LENGTH (string);
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355
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356 /* If ALIST is not a list, set TAIL just for gc pro. */
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357 tail = alist;
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358 if (!list)
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359 {
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360 obsize = XVECTOR_LENGTH (alist);
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361 bucket = XVECTOR_DATA (alist)[indice];
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362 }
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363 else /* warning suppression */
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364 {
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365 obsize = 0;
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366 bucket = Qnil;
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|
367 }
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368
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369 while (1)
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370 {
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371 /* Get the next element of the alist or obarray. */
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372 /* Exit the loop if the elements are all used up. */
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373 /* elt gets the alist element or symbol.
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374 eltstring gets the name to check as a completion. */
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375 Lisp_Object elt;
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376 Lisp_Object eltstring;
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377
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|
378 if (list)
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379 {
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|
380 if (NILP (tail))
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|
381 break;
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|
382 elt = Fcar (tail);
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|
383 eltstring = Fcar (elt);
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384 tail = Fcdr (tail);
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385 }
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386 else
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387 {
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|
388 if (!ZEROP (bucket))
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|
389 {
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440
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390 Lisp_Symbol *next;
|
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428
|
391 if (!SYMBOLP (bucket))
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|
|
392 {
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|
393 signal_simple_error ("Bad obarray passed to try-completions",
|
|
|
394 bucket);
|
|
|
395 }
|
|
|
396 next = symbol_next (XSYMBOL (bucket));
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|
|
397 elt = bucket;
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|
|
398 eltstring = Fsymbol_name (elt);
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|
|
399 if (next)
|
|
|
400 XSETSYMBOL (bucket, next);
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|
|
401 else
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|
402 bucket = Qzero;
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|
|
403 }
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|
404 else if (++indice >= obsize)
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|
|
405 break;
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|
|
406 else
|
|
|
407 {
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|
|
408 bucket = XVECTOR_DATA (alist)[indice];
|
|
|
409 continue;
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|
|
410 }
|
|
|
411 }
|
|
|
412
|
|
|
413 /* Is this element a possible completion? */
|
|
|
414
|
|
|
415 if (STRINGP (eltstring))
|
|
|
416 {
|
|
|
417 Charcount eltlength = XSTRING_CHAR_LENGTH (eltstring);
|
|
|
418 if (slength <= eltlength
|
|
|
419 && (0 > scmp (XSTRING_DATA (eltstring),
|
|
|
420 XSTRING_DATA (string),
|
|
|
421 slength)))
|
|
|
422 {
|
|
|
423 {
|
|
|
424 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
|
425 int loser;
|
|
|
426 GCPRO4 (tail, string, eltstring, bestmatch);
|
|
|
427 loser = ignore_completion_p (eltstring, pred, elt);
|
|
|
428 UNGCPRO;
|
|
|
429 if (loser) /* reject this one */
|
|
|
430 continue;
|
|
|
431 }
|
|
|
432
|
|
|
433 /* Update computation of how much all possible
|
|
|
434 completions match */
|
|
|
435
|
|
|
436 matchcount++;
|
|
|
437 if (NILP (bestmatch))
|
|
|
438 {
|
|
|
439 bestmatch = eltstring;
|
|
|
440 blength = eltlength;
|
|
|
441 bestmatchsize = eltlength;
|
|
|
442 }
|
|
|
443 else
|
|
|
444 {
|
|
|
445 Charcount compare = min (bestmatchsize, eltlength);
|
|
|
446 Charcount matchsize =
|
|
|
447 scmp (XSTRING_DATA (bestmatch),
|
|
|
448 XSTRING_DATA (eltstring),
|
|
|
449 compare);
|
|
|
450 if (matchsize < 0)
|
|
|
451 matchsize = compare;
|
|
|
452 if (completion_ignore_case)
|
|
|
453 {
|
|
|
454 /* If this is an exact match except for case,
|
|
|
455 use it as the best match rather than one that is not
|
|
|
456 an exact match. This way, we get the case pattern
|
|
|
457 of the actual match. */
|
|
|
458 if ((matchsize == eltlength
|
|
|
459 && matchsize < blength)
|
|
|
460 ||
|
|
|
461 /* If there is more than one exact match ignoring
|
|
|
462 case, and one of them is exact including case,
|
|
|
463 prefer that one. */
|
|
|
464 /* If there is no exact match ignoring case,
|
|
|
465 prefer a match that does not change the case
|
|
|
466 of the input. */
|
|
|
467 ((matchsize == eltlength)
|
|
|
468 ==
|
|
|
469 (matchsize == blength)
|
|
|
470 && 0 > scmp_1 (XSTRING_DATA (eltstring),
|
|
|
471 XSTRING_DATA (string),
|
|
|
472 slength, 0)
|
|
|
473 && 0 <= scmp_1 (XSTRING_DATA (bestmatch),
|
|
|
474 XSTRING_DATA (string),
|
|
|
475 slength, 0)))
|
|
|
476 {
|
|
|
477 bestmatch = eltstring;
|
|
|
478 blength = eltlength;
|
|
|
479 }
|
|
|
480 }
|
|
|
481 bestmatchsize = matchsize;
|
|
|
482 }
|
|
|
483 }
|
|
|
484 }
|
|
|
485 }
|
|
|
486
|
|
|
487 if (NILP (bestmatch))
|
|
|
488 return Qnil; /* No completions found */
|
|
|
489 /* If we are ignoring case, and there is no exact match,
|
|
|
490 and no additional text was supplied,
|
|
|
491 don't change the case of what the user typed. */
|
|
|
492 if (completion_ignore_case
|
|
|
493 && bestmatchsize == slength
|
|
|
494 && blength > bestmatchsize)
|
|
|
495 return string;
|
|
|
496
|
|
|
497 /* Return t if the supplied string is an exact match (counting case);
|
|
|
498 it does not require any change to be made. */
|
|
|
499 if (matchcount == 1
|
|
|
500 && bestmatchsize == slength
|
|
|
501 && 0 > scmp_1 (XSTRING_DATA (bestmatch),
|
|
|
502 XSTRING_DATA (string),
|
|
|
503 bestmatchsize, 0))
|
|
|
504 return Qt;
|
|
|
505
|
|
|
506 /* Else extract the part in which all completions agree */
|
|
|
507 return Fsubstring (bestmatch, Qzero, make_int (bestmatchsize));
|
|
|
508 }
|
|
|
509
|
|
|
510
|
|
|
511 DEFUN ("all-completions", Fall_completions, 2, 3, 0, /*
|
|
|
512 Search for partial matches to STRING in ALIST.
|
|
|
513 Each car of each element of ALIST is tested to see if it begins with STRING.
|
|
|
514 The value is a list of all the strings from ALIST that match.
|
|
|
515 ALIST can be an obarray instead of an alist.
|
|
|
516 Then the print names of all symbols in the obarray are the possible matches.
|
|
|
517
|
|
|
518 ALIST can also be a function to do the completion itself.
|
|
|
519 It receives three arguments: the values STRING, PREDICATE and t.
|
|
|
520 Whatever it returns becomes the value of `all-completions'.
|
|
|
521
|
|
|
522 If optional third argument PREDICATE is non-nil,
|
|
|
523 it is used to test each possible match.
|
|
|
524 The match is a candidate only if PREDICATE returns non-nil.
|
|
|
525 The argument given to PREDICATE is the alist element or
|
|
|
526 the symbol from the obarray.
|
|
|
527 */
|
|
|
528 (string, alist, pred))
|
|
|
529 {
|
|
|
530 /* This function can GC */
|
|
|
531 Lisp_Object tail;
|
|
|
532 Lisp_Object allmatches;
|
|
|
533 int list;
|
|
|
534 int indice = 0;
|
|
|
535 int obsize;
|
|
|
536 Lisp_Object bucket;
|
|
|
537 Charcount slength;
|
|
|
538
|
|
|
539 CHECK_STRING (string);
|
|
|
540
|
|
|
541 if (CONSP (alist))
|
|
|
542 {
|
|
|
543 Lisp_Object tem = XCAR (alist);
|
|
|
544 if (SYMBOLP (tem)) /* lambda, autoload, etc. Emacs-lisp sucks */
|
|
|
545 return call3 (alist, string, pred, Qt);
|
|
|
546 else
|
|
|
547 list = 1;
|
|
|
548 }
|
|
|
549 else if (VECTORP (alist))
|
|
|
550 list = 0;
|
|
|
551 else if (NILP (alist))
|
|
|
552 list = 1;
|
|
|
553 else
|
|
|
554 return call3 (alist, string, pred, Qt);
|
|
|
555
|
|
|
556 allmatches = Qnil;
|
|
|
557 slength = XSTRING_CHAR_LENGTH (string);
|
|
|
558
|
|
|
559 /* If ALIST is not a list, set TAIL just for gc pro. */
|
|
|
560 tail = alist;
|
|
|
561 if (!list)
|
|
|
562 {
|
|
|
563 obsize = XVECTOR_LENGTH (alist);
|
|
|
564 bucket = XVECTOR_DATA (alist)[indice];
|
|
|
565 }
|
|
|
566 else /* warning suppression */
|
|
|
567 {
|
|
|
568 obsize = 0;
|
|
|
569 bucket = Qnil;
|
|
|
570 }
|
|
|
571
|
|
|
572 while (1)
|
|
|
573 {
|
|
|
574 /* Get the next element of the alist or obarray. */
|
|
|
575 /* Exit the loop if the elements are all used up. */
|
|
|
576 /* elt gets the alist element or symbol.
|
|
|
577 eltstring gets the name to check as a completion. */
|
|
|
578 Lisp_Object elt;
|
|
|
579 Lisp_Object eltstring;
|
|
|
580
|
|
|
581 if (list)
|
|
|
582 {
|
|
|
583 if (NILP (tail))
|
|
|
584 break;
|
|
|
585 elt = Fcar (tail);
|
|
|
586 eltstring = Fcar (elt);
|
|
|
587 tail = Fcdr (tail);
|
|
|
588 }
|
|
|
589 else
|
|
|
590 {
|
|
|
591 if (!ZEROP (bucket))
|
|
|
592 {
|
|
440
|
593 Lisp_Symbol *next = symbol_next (XSYMBOL (bucket));
|
|
428
|
594 elt = bucket;
|
|
|
595 eltstring = Fsymbol_name (elt);
|
|
|
596 if (next)
|
|
|
597 XSETSYMBOL (bucket, next);
|
|
|
598 else
|
|
|
599 bucket = Qzero;
|
|
|
600 }
|
|
|
601 else if (++indice >= obsize)
|
|
|
602 break;
|
|
|
603 else
|
|
|
604 {
|
|
|
605 bucket = XVECTOR_DATA (alist)[indice];
|
|
|
606 continue;
|
|
|
607 }
|
|
|
608 }
|
|
|
609
|
|
|
610 /* Is this element a possible completion? */
|
|
|
611
|
|
|
612 if (STRINGP (eltstring)
|
|
|
613 && (slength <= XSTRING_CHAR_LENGTH (eltstring))
|
|
|
614 /* Reject alternatives that start with space
|
|
|
615 unless the input starts with space. */
|
|
|
616 && ((XSTRING_CHAR_LENGTH (string) > 0 &&
|
|
|
617 string_char (XSTRING (string), 0) == ' ')
|
|
|
618 || string_char (XSTRING (eltstring), 0) != ' ')
|
|
|
619 && (0 > scmp (XSTRING_DATA (eltstring),
|
|
|
620 XSTRING_DATA (string),
|
|
|
621 slength)))
|
|
|
622 {
|
|
|
623 /* Yes. Now check whether predicate likes it. */
|
|
|
624 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
|
625 int loser;
|
|
|
626 GCPRO4 (tail, eltstring, allmatches, string);
|
|
|
627 loser = ignore_completion_p (eltstring, pred, elt);
|
|
|
628 UNGCPRO;
|
|
|
629 if (!loser)
|
|
|
630 /* Ok => put it on the list. */
|
|
|
631 allmatches = Fcons (eltstring, allmatches);
|
|
|
632 }
|
|
|
633 }
|
|
|
634
|
|
|
635 return Fnreverse (allmatches);
|
|
|
636 }
|
|
|
637
|
|
|
638 /* Useless FSFmacs functions */
|
|
|
639 /* More than useless. I've nuked minibuf_prompt_width so they won't
|
|
|
640 function at all in XEmacs at the moment. They are used to
|
|
|
641 implement some braindamage in FSF which we aren't including. --cet */
|
|
|
642
|
|
|
643 #if 0
|
|
|
644 xxDEFUN ("minibuffer-prompt", Fminibuffer_prompt, 0, 0, 0, /*
|
|
|
645 Return the prompt string of the currently-active minibuffer.
|
|
|
646 If no minibuffer is active, return nil.
|
|
|
647 */
|
|
|
648 ())
|
|
|
649 {
|
|
|
650 return Fcopy_sequence (Vminibuf_prompt);
|
|
|
651 }
|
|
|
652
|
|
|
653 xxDEFUN ("minibuffer-prompt-width", Fminibuffer_prompt_width, 0, 0, 0, /*
|
|
|
654 Return the display width of the minibuffer prompt.
|
|
|
655 */
|
|
|
656 ())
|
|
|
657 {
|
|
|
658 return make_int (minibuf_prompt_width);
|
|
|
659 }
|
|
|
660 #endif /* 0 */
|
|
|
661
|
|
|
662
|
|
|
663 /************************************************************************/
|
|
|
664 /* echo area */
|
|
|
665 /************************************************************************/
|
|
|
666
|
|
|
667 extern int stdout_needs_newline;
|
|
|
668
|
|
|
669 static Lisp_Object
|
|
|
670 clear_echo_area_internal (struct frame *f, Lisp_Object label, int from_print,
|
|
|
671 int no_restore)
|
|
|
672 {
|
|
|
673 /* This function can call lisp */
|
|
|
674 if (!NILP (Ffboundp (Qclear_message)))
|
|
|
675 {
|
|
|
676 Lisp_Object frame;
|
|
|
677
|
|
|
678 XSETFRAME (frame, f);
|
|
|
679 return call4 (Qclear_message, label, frame, from_print ? Qt : Qnil,
|
|
|
680 no_restore ? Qt : Qnil);
|
|
|
681 }
|
|
|
682 else
|
|
|
683 {
|
|
442
|
684 write_string_to_stdio_stream (stderr, 0, (const Bufbyte *) "\n", 0, 1,
|
|
|
685 Qterminal, 0);
|
|
428
|
686 return Qnil;
|
|
|
687 }
|
|
|
688 }
|
|
|
689
|
|
|
690 Lisp_Object
|
|
|
691 clear_echo_area (struct frame *f, Lisp_Object label, int no_restore)
|
|
|
692 {
|
|
|
693 /* This function can call lisp */
|
|
|
694 return clear_echo_area_internal (f, label, 0, no_restore);
|
|
|
695 }
|
|
|
696
|
|
|
697 Lisp_Object
|
|
|
698 clear_echo_area_from_print (struct frame *f, Lisp_Object label, int no_restore)
|
|
|
699 {
|
|
|
700 /* This function can call lisp */
|
|
|
701 return clear_echo_area_internal (f, label, 1, no_restore);
|
|
|
702 }
|
|
|
703
|
|
|
704 void
|
|
442
|
705 echo_area_append (struct frame *f, const Bufbyte *nonreloc, Lisp_Object reloc,
|
|
428
|
706 Bytecount offset, Bytecount length,
|
|
|
707 Lisp_Object label)
|
|
|
708 {
|
|
|
709 /* This function can call lisp */
|
|
|
710 Lisp_Object obj;
|
|
|
711 struct gcpro gcpro1;
|
|
|
712 Lisp_Object frame;
|
|
|
713
|
|
440
|
714 /* There is an inlining bug in egcs-20000131 c++ that can be worked
|
|
|
715 around as follows: */
|
|
|
716 #if defined (__GNUC__) && defined (__cplusplus)
|
|
|
717 alloca (4);
|
|
|
718 #endif
|
|
|
719
|
|
428
|
720 /* some callers pass in a null string as a way of clearing the echo area.
|
|
|
721 check for length == 0 now; if this case, neither nonreloc nor reloc
|
|
|
722 may be valid. */
|
|
|
723 if (length == 0)
|
|
|
724 return;
|
|
|
725
|
|
|
726 fixup_internal_substring (nonreloc, reloc, offset, &length);
|
|
|
727
|
|
|
728 /* also check it here, in case the string was really blank. */
|
|
|
729 if (length == 0)
|
|
|
730 return;
|
|
|
731
|
|
|
732 if (!NILP (Ffboundp (Qappend_message)))
|
|
|
733 {
|
|
|
734 if (STRINGP (reloc) && offset == 0 && length == XSTRING_LENGTH (reloc))
|
|
|
735 obj = reloc;
|
|
|
736 else
|
|
|
737 {
|
|
|
738 if (STRINGP (reloc))
|
|
|
739 nonreloc = XSTRING_DATA (reloc);
|
|
|
740 obj = make_string (nonreloc + offset, length);
|
|
|
741 }
|
|
|
742
|
|
|
743 XSETFRAME (frame, f);
|
|
|
744 GCPRO1 (obj);
|
|
|
745 call4 (Qappend_message, label, obj, frame,
|
|
|
746 EQ (label, Qprint) ? Qt : Qnil);
|
|
|
747 UNGCPRO;
|
|
|
748 }
|
|
|
749 else
|
|
|
750 {
|
|
|
751 if (STRINGP (reloc))
|
|
|
752 nonreloc = XSTRING_DATA (reloc);
|
|
|
753 write_string_to_stdio_stream (stderr, 0, nonreloc, offset, length,
|
|
442
|
754 Qterminal, 0);
|
|
428
|
755 }
|
|
|
756 }
|
|
|
757
|
|
|
758 void
|
|
442
|
759 echo_area_message (struct frame *f, const Bufbyte *nonreloc,
|
|
428
|
760 Lisp_Object reloc, Bytecount offset, Bytecount length,
|
|
|
761 Lisp_Object label)
|
|
|
762 {
|
|
|
763 /* This function can call lisp */
|
|
|
764 clear_echo_area (f, label, 1);
|
|
|
765 echo_area_append (f, nonreloc, reloc, offset, length, label);
|
|
|
766 }
|
|
|
767
|
|
|
768 int
|
|
|
769 echo_area_active (struct frame *f)
|
|
|
770 {
|
|
|
771 /* By definition, the echo area is active if the echo-area buffer
|
|
|
772 is not empty. No need to call Lisp code. (Anyway, this function
|
|
|
773 is called from redisplay.) */
|
|
|
774 struct buffer *echo_buffer = XBUFFER (Vecho_area_buffer);
|
|
|
775 return BUF_BEGV (echo_buffer) != BUF_ZV (echo_buffer);
|
|
|
776 }
|
|
|
777
|
|
|
778 Lisp_Object
|
|
|
779 echo_area_status (struct frame *f)
|
|
|
780 {
|
|
|
781 /* This function can call lisp */
|
|
|
782 if (!NILP (Ffboundp (Qcurrent_message_label)))
|
|
|
783 {
|
|
|
784 Lisp_Object frame;
|
|
|
785
|
|
|
786 XSETFRAME (frame, f);
|
|
|
787 return call1 (Qcurrent_message_label, frame);
|
|
|
788 }
|
|
|
789 else
|
|
|
790 return stdout_needs_newline ? Qmessage : Qnil;
|
|
|
791 }
|
|
|
792
|
|
|
793 Lisp_Object
|
|
|
794 echo_area_contents (struct frame *f)
|
|
|
795 {
|
|
|
796 /* See above. By definition, the contents of the echo-area buffer
|
|
|
797 are the contents of the echo area. */
|
|
|
798 return Fbuffer_substring (Qnil, Qnil, Vecho_area_buffer);
|
|
|
799 }
|
|
|
800
|
|
|
801 /* Dump an informative message to the echo area. This function takes a
|
|
|
802 string in internal format. */
|
|
|
803 void
|
|
442
|
804 message_internal (const Bufbyte *nonreloc, Lisp_Object reloc,
|
|
428
|
805 Bytecount offset, Bytecount length)
|
|
|
806 {
|
|
|
807 /* This function can call lisp */
|
|
|
808 if (NILP (Vexecuting_macro))
|
|
|
809 echo_area_message (selected_frame (), nonreloc, reloc, offset, length,
|
|
|
810 Qmessage);
|
|
|
811 }
|
|
|
812
|
|
|
813 void
|
|
442
|
814 message_append_internal (const Bufbyte *nonreloc, Lisp_Object reloc,
|
|
428
|
815 Bytecount offset, Bytecount length)
|
|
|
816 {
|
|
|
817 /* This function can call lisp */
|
|
|
818 if (NILP (Vexecuting_macro))
|
|
|
819 echo_area_append (selected_frame (), nonreloc, reloc, offset, length,
|
|
|
820 Qmessage);
|
|
|
821 }
|
|
|
822
|
|
|
823 /* The next three functions are interfaces to message_internal() that
|
|
|
824 take strings in external format. message() does I18N3 translating
|
|
|
825 on the format string; message_no_translate() does not. */
|
|
|
826
|
|
|
827 static void
|
|
442
|
828 message_1 (const char *fmt, va_list args)
|
|
428
|
829 {
|
|
|
830 /* This function can call lisp */
|
|
|
831 if (fmt)
|
|
|
832 {
|
|
|
833 struct gcpro gcpro1;
|
|
|
834 /* message_internal() might GC, e.g. if there are after-change-hooks
|
|
|
835 on the echo area buffer */
|
|
442
|
836 Lisp_Object obj = emacs_doprnt_string_va ((const Bufbyte *) fmt, Qnil,
|
|
428
|
837 -1, args);
|
|
|
838 GCPRO1 (obj);
|
|
|
839 message_internal (0, obj, 0, -1);
|
|
|
840 UNGCPRO;
|
|
|
841 }
|
|
|
842 else
|
|
|
843 message_internal (0, Qnil, 0, 0);
|
|
|
844 }
|
|
|
845
|
|
|
846 static void
|
|
442
|
847 message_append_1 (const char *fmt, va_list args)
|
|
428
|
848 {
|
|
|
849 /* This function can call lisp */
|
|
|
850 if (fmt)
|
|
|
851 {
|
|
|
852 struct gcpro gcpro1;
|
|
|
853 /* message_internal() might GC, e.g. if there are after-change-hooks
|
|
|
854 on the echo area buffer */
|
|
442
|
855 Lisp_Object obj = emacs_doprnt_string_va ((const Bufbyte *) fmt, Qnil,
|
|
428
|
856 -1, args);
|
|
|
857 GCPRO1 (obj);
|
|
|
858 message_append_internal (0, obj, 0, -1);
|
|
|
859 UNGCPRO;
|
|
|
860 }
|
|
|
861 else
|
|
|
862 message_append_internal (0, Qnil, 0, 0);
|
|
|
863 }
|
|
|
864
|
|
|
865 void
|
|
|
866 clear_message (void)
|
|
|
867 {
|
|
|
868 /* This function can call lisp */
|
|
|
869 message_internal (0, Qnil, 0, 0);
|
|
|
870 }
|
|
|
871
|
|
|
872 void
|
|
442
|
873 message (const char *fmt, ...)
|
|
428
|
874 {
|
|
|
875 /* This function can call lisp */
|
|
|
876 /* I think it's OK to pass the data of Lisp strings as arguments to
|
|
|
877 this function. No GC'ing will occur until the data has already
|
|
|
878 been copied. */
|
|
|
879 va_list args;
|
|
|
880
|
|
|
881 va_start (args, fmt);
|
|
|
882 if (fmt)
|
|
|
883 fmt = GETTEXT (fmt);
|
|
|
884 message_1 (fmt, args);
|
|
|
885 va_end (args);
|
|
|
886 }
|
|
|
887
|
|
|
888 void
|
|
442
|
889 message_append (const char *fmt, ...)
|
|
428
|
890 {
|
|
|
891 /* This function can call lisp */
|
|
|
892 va_list args;
|
|
|
893
|
|
|
894 va_start (args, fmt);
|
|
|
895 if (fmt)
|
|
|
896 fmt = GETTEXT (fmt);
|
|
|
897 message_append_1 (fmt, args);
|
|
|
898 va_end (args);
|
|
|
899 }
|
|
|
900
|
|
|
901 void
|
|
442
|
902 message_no_translate (const char *fmt, ...)
|
|
428
|
903 {
|
|
|
904 /* This function can call lisp */
|
|
|
905 /* I think it's OK to pass the data of Lisp strings as arguments to
|
|
|
906 this function. No GC'ing will occur until the data has already
|
|
|
907 been copied. */
|
|
|
908 va_list args;
|
|
|
909
|
|
|
910 va_start (args, fmt);
|
|
|
911 message_1 (fmt, args);
|
|
|
912 va_end (args);
|
|
|
913 }
|
|
|
914
|
|
|
915
|
|
|
916 /************************************************************************/
|
|
|
917 /* initialization */
|
|
|
918 /************************************************************************/
|
|
|
919
|
|
|
920 void
|
|
|
921 syms_of_minibuf (void)
|
|
|
922 {
|
|
|
923 defsymbol (&Qminibuffer_setup_hook, "minibuffer-setup-hook");
|
|
|
924
|
|
|
925 defsymbol (&Qcompletion_ignore_case, "completion-ignore-case");
|
|
|
926
|
|
|
927 DEFSUBR (Fminibuffer_depth);
|
|
|
928 #if 0
|
|
|
929 DEFSUBR (Fminibuffer_prompt);
|
|
|
930 DEFSUBR (Fminibuffer_prompt_width);
|
|
|
931 #endif
|
|
|
932 DEFSUBR (Fset_minibuffer_preprompt);
|
|
|
933 DEFSUBR (Fread_minibuffer_internal);
|
|
|
934
|
|
|
935 DEFSUBR (Ftry_completion);
|
|
|
936 DEFSUBR (Fall_completions);
|
|
|
937
|
|
|
938 defsymbol (&Qappend_message, "append-message");
|
|
|
939 defsymbol (&Qclear_message, "clear-message");
|
|
|
940 defsymbol (&Qdisplay_message, "display-message");
|
|
|
941 defsymbol (&Qcurrent_message_label, "current-message-label");
|
|
|
942 }
|
|
|
943
|
|
|
944 void
|
|
|
945 reinit_vars_of_minibuf (void)
|
|
|
946 {
|
|
|
947 minibuf_level = 0;
|
|
|
948 }
|
|
|
949
|
|
|
950 void
|
|
|
951 vars_of_minibuf (void)
|
|
|
952 {
|
|
|
953 reinit_vars_of_minibuf ();
|
|
|
954
|
|
|
955 staticpro (&Vminibuf_prompt);
|
|
|
956 Vminibuf_prompt = Qnil;
|
|
|
957
|
|
|
958 /* Added by Jareth Hein (jhod@po.iijnet.or.jp) for input system support */
|
|
|
959 staticpro (&Vminibuf_preprompt);
|
|
|
960 Vminibuf_preprompt = Qnil;
|
|
|
961
|
|
|
962 DEFVAR_LISP ("minibuffer-setup-hook", &Vminibuffer_setup_hook /*
|
|
|
963 Normal hook run just after entry to minibuffer.
|
|
|
964 */ );
|
|
|
965 Vminibuffer_setup_hook = Qnil;
|
|
|
966
|
|
|
967 DEFVAR_BOOL ("completion-ignore-case", &completion_ignore_case /*
|
|
|
968 Non-nil means don't consider case significant in completion.
|
|
|
969 */ );
|
|
|
970 completion_ignore_case = 0;
|
|
|
971
|
|
|
972 DEFVAR_LISP ("completion-regexp-list", &Vcompletion_regexp_list /*
|
|
|
973 List of regexps that should restrict possible completions.
|
|
|
974 Each completion has to match all regexps in this list.
|
|
|
975 */ );
|
|
|
976 Vcompletion_regexp_list = Qnil;
|
|
|
977 }
|
|
|
978
|
|
|
979 void
|
|
|
980 reinit_complex_vars_of_minibuf (void)
|
|
|
981 {
|
|
|
982 /* This function can GC */
|
|
|
983 #ifdef I18N3
|
|
|
984 /* #### This needs to be fixed up so that the gettext() gets called
|
|
|
985 at runtime instead of at load time. */
|
|
|
986 #endif
|
|
|
987 Vminibuffer_zero
|
|
|
988 = Fget_buffer_create
|
|
|
989 (build_string (DEFER_GETTEXT (" *Minibuf-0*")));
|
|
|
990 Vecho_area_buffer
|
|
|
991 = Fget_buffer_create
|
|
|
992 (build_string (DEFER_GETTEXT (" *Echo Area*")));
|
|
|
993 }
|
|
|
994
|
|
|
995 void
|
|
|
996 complex_vars_of_minibuf (void)
|
|
|
997 {
|
|
|
998 reinit_complex_vars_of_minibuf ();
|
|
|
999 }
|
