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