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1 /* |
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2 |
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2847
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave 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 Octave 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 Octave; see the file COPYING. If not, write to the Free |
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1315
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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2939
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21 */ |
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22 |
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23 /* |
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24 |
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25 The functions listed below were adapted from similar functions from |
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26 GNU Bash, the Bourne Again SHell, copyright (C) 1987, 1989, 1991 Free |
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27 Software Foundation, Inc. |
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28 |
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29 do_history edit_history_readline |
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30 do_edit_history edit_history_add_hist |
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31 |
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32 */ |
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33 |
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240
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34 #ifdef HAVE_CONFIG_H |
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1192
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35 #include <config.h> |
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1
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36 #endif |
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37 |
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1346
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38 #include <csignal> |
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1343
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39 #include <cstdlib> |
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40 #include <cstring> |
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41 |
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1750
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42 #include <string> |
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43 |
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1350
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44 #include <fstream.h> |
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45 |
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46 #ifdef HAVE_UNISTD_H |
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2442
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47 #ifdef HAVE_SYS_TYPES_H |
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1
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48 #include <sys/types.h> |
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2442
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49 #endif |
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1
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50 #include <unistd.h> |
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51 #endif |
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1350
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52 |
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1799
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53 #include "cmd-hist.h" |
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1802
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54 #include "file-ops.h" |
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3016
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55 #include "lo-mappers.h" |
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2926
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56 #include "oct-env.h" |
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1755
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57 #include "str-vec.h" |
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58 |
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2492
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59 #include <defaults.h> |
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1352
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60 #include "defun.h" |
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1
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61 #include "error.h" |
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3016
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62 #include "gripes.h" |
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1
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63 #include "input.h" |
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1742
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64 #include "oct-hist.h" |
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1750
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65 #include "oct-obj.h" |
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1352
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66 #include "pager.h" |
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3018
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67 #include "parse.h" |
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1352
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68 #include "sighandlers.h" |
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1690
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69 #include "sysdep.h" |
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1750
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70 #include "toplev.h" |
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1352
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71 #include "unwind-prot.h" |
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72 #include "utils.h" |
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2205
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73 #include "variables.h" |
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1
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74 |
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3018
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75 // TRUE means input is coming from temporary history file. |
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76 bool input_from_tmp_history_file = false; |
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168
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77 |
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3016
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78 // Where history is saved. |
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79 static string Vhistory_file; |
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80 |
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81 // The number of lines to keep in the history file. |
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82 static int Vhistory_size; |
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83 |
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84 // TRUE if we are saving history. |
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3018
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85 bool Vsaving_history = true; |
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3016
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86 |
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581
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87 // Get some default values, possibly reading them from the |
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88 // environment. |
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89 |
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1646
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90 int |
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1
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91 default_history_size (void) |
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92 { |
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93 int size = 1024; |
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2926
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94 |
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95 string env_size = octave_env::getenv ("OCTAVE_HISTSIZE"); |
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96 |
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97 if (! env_size.empty ()) |
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1
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98 { |
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99 int val; |
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2926
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100 |
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101 if (sscanf (env_size.c_str (), "%d", &val) == 1) |
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1
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102 size = val > 0 ? val : 0; |
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103 } |
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2926
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104 |
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1
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105 return size; |
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106 } |
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107 |
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1755
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108 string |
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109 default_history_file (void) |
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110 { |
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1755
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111 string file; |
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1
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112 |
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2926
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113 string env_file = octave_env::getenv ("OCTAVE_HISTFILE"); |
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114 |
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2926
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115 if (! env_file.empty ()) |
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1
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116 { |
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2926
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117 fstream f (env_file.c_str (), (ios::in | ios::out)); |
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118 |
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529
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119 if (f) |
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1
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120 { |
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1755
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121 file = env_file; |
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1
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122 f.close (); |
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123 } |
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124 } |
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125 |
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1755
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126 if (file.empty ()) |
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127 { |
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2926
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128 string home_dir = octave_env::get_home_directory (); |
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129 |
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130 if (! home_dir.empty ()) |
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1969
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131 { |
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2926
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132 file = home_dir; |
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1969
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133 file.append ("/.octave_hist"); |
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134 } |
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1755
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135 else |
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136 file = ".octave_hist"; |
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137 } |
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1
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138 |
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139 return file; |
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140 } |
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141 |
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581
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142 // Display, save, or load history. Stolen and modified from bash. |
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143 // |
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144 // Arg of -w FILENAME means write file, arg of -r FILENAME |
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145 // means read file, arg of -q means don't number lines. Arg of N |
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146 // means only display that many items. |
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147 |
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1755
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148 static void |
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149 do_history (int argc, const string_vector& argv) |
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1
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150 { |
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151 int numbered_output = 1; |
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152 |
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1755
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153 int i; |
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154 for (i = 1; i < argc; i++) |
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1
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155 { |
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2435
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156 string option = argv[i]; |
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157 |
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158 if (option == "-r" || option == "-w" || option == "-a" |
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159 || option == "-n") |
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1
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160 { |
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1755
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161 if (i < argc - 1) |
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1799
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162 { |
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2926
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163 string file = file_ops::tilde_expand (argv[i+1]); |
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164 command_history::set_file (file); |
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1799
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165 } |
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1
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166 |
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2435
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167 if (option == "-a") |
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168 // Append `new' lines to file. |
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2926
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169 command_history::append (); |
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2435
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170 |
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171 else if (option == "-w") |
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172 // Write entire history. |
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2926
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173 command_history::write (); |
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777
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174 |
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2435
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175 else if (option == "-r") |
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176 // Read entire file. |
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2926
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177 command_history::read (); |
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777
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178 |
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2435
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179 else if (option == "-n") |
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180 // Read `new' history from file. |
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2926
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181 command_history::read_range (); |
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777
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182 |
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2435
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183 else |
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184 panic_impossible (); |
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185 |
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1
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186 return; |
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187 } |
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1755
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188 else if (argv[i] == "-q") |
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1
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189 numbered_output = 0; |
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1755
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190 else if (argv[i] == "--") |
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1
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191 { |
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1755
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192 i++; |
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1
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193 break; |
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194 } |
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195 else |
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196 break; |
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197 } |
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198 |
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1799
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199 int limit = -1; |
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1
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200 |
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1755
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201 if (i < argc) |
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1
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202 { |
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1755
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203 if (sscanf (argv[i].c_str (), "%d", &limit) != 1) |
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1
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204 { |
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1755
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205 if (argv[i][0] == '-') |
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206 error ("history: unrecognized option `%s'", argv[i].c_str ()); |
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1
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207 else |
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1755
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208 error ("history: bad non-numeric arg `%s'", argv[i].c_str ()); |
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1799
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209 |
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1
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210 return; |
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211 } |
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212 |
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213 if (limit < 0) |
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214 limit = -limit; |
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1799
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215 } |
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1
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216 |
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2926
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217 string_vector hlist = command_history::list (limit, numbered_output); |
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1
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218 |
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1799
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219 int len = hlist.length (); |
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220 |
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2095
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221 for (i = 0; i < len; i++) |
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222 octave_stdout << hlist[i] << "\n"; |
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1
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223 } |
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224 |
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581
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225 // Read the edited history lines from STREAM and return them |
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226 // one at a time. This can read unlimited length lines. The |
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2434
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227 // caller should free the storage. |
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228 |
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229 static char * |
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230 edit_history_readline (fstream& stream) |
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231 { |
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232 char c; |
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233 int line_len = 128; |
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234 int lindex = 0; |
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235 char *line = new char [line_len]; |
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236 line[0] = '\0'; |
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237 |
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238 while (stream.get (c)) |
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239 { |
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240 if (lindex + 2 >= line_len) |
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241 { |
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242 char *tmp_line = new char [line_len += 128]; |
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243 strcpy (tmp_line, line); |
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244 delete [] line; |
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245 line = tmp_line; |
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246 } |
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247 |
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248 if (c == '\n') |
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249 { |
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250 line[lindex++] = '\n'; |
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251 line[lindex++] = '\0'; |
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252 return line; |
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253 } |
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254 else |
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255 line[lindex++] = c; |
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256 } |
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257 |
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258 if (! lindex) |
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259 { |
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260 delete [] line; |
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529
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261 return 0; |
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1
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262 } |
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263 |
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264 if (lindex + 2 >= line_len) |
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265 { |
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266 char *tmp_line = new char [lindex+3]; |
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267 strcpy (tmp_line, line); |
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268 delete [] line; |
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269 line = tmp_line; |
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270 } |
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271 |
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1358
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272 // Finish with newline if none in file. |
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1
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273 |
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274 line[lindex++] = '\n'; |
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275 line[lindex++] = '\0'; |
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276 return line; |
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277 } |
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278 |
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581
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279 // Use `command' to replace the last entry in the history list, which, |
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280 // by this time, is `run_history blah...'. The intent is that the |
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1799
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281 // new command becomes the history entry, and that `fc' should never |
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581
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282 // appear in the history list. This way you can do `run_history' to |
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283 // your heart's content. |
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284 |
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64
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285 static void |
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1799
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286 edit_history_repl_hist (const string& command) |
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64
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287 { |
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1799
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288 if (! command.empty ()) |
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289 { |
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2926
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290 string_vector hlist = command_history::list (); |
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64
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291 |
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1799
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292 int len = hlist.length (); |
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64
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293 |
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1799
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294 if (len > 0) |
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295 { |
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296 int i = len - 1; |
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64
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297 |
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2926
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298 string histent = command_history::get_entry (i); |
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64
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299 |
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1799
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300 if (! histent.empty ()) |
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301 { |
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302 string cmd = command; |
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64
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303 |
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1799
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304 int cmd_len = cmd.length (); |
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64
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305 |
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1799
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306 if (cmd[cmd_len - 1] == '\n') |
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307 cmd.resize (cmd_len - 1); |
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64
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308 |
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1799
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309 if (! cmd.empty ()) |
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2926
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310 command_history::replace_entry (i, cmd); |
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1799
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311 } |
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64
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312 } |
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313 } |
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314 } |
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315 |
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1
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316 static void |
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1799
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317 edit_history_add_hist (const string& line) |
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1
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318 { |
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1799
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319 if (! line.empty ()) |
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1
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320 { |
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1799
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321 string tmp = line; |
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1
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322 |
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1799
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323 int len = tmp.length (); |
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324 |
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325 if (len > 0 && tmp[len-1] == '\n') |
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326 tmp.resize (len - 1); |
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327 |
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328 if (! tmp.empty ()) |
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2926
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329 command_history::add (tmp); |
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1
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330 } |
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331 } |
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332 |
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1755
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333 static string |
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334 mk_tmp_hist_file (int argc, const string_vector& argv, |
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2804
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335 int insert_curr, const char *warn_for) |
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1
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336 { |
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1799
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337 string retval; |
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1
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338 |
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2926
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339 string_vector hlist = command_history::list (); |
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1
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340 |
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1799
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341 int hist_count = hlist.length (); |
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1
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342 |
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1358
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343 // The current command line is already part of the history list by |
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344 // the time we get to this point. Delete it from the list. |
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1
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345 |
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346 hist_count -= 2; |
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1799
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347 |
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64
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348 if (! insert_curr) |
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2926
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349 command_history::remove (hist_count); |
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1799
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350 |
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1
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351 hist_count--; |
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352 |
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1358
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353 // If no numbers have been specified, the default is to edit the |
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354 // last command in the history list. |
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1
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355 |
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356 int hist_end = hist_count; |
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357 int hist_beg = hist_count; |
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358 int reverse = 0; |
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359 |
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1358
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360 // Process options. |
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1
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361 |
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362 int usage_error = 0; |
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363 if (argc == 3) |
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364 { |
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1755
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365 if (sscanf (argv[1].c_str (), "%d", &hist_beg) != 1 |
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366 || sscanf (argv[2].c_str (), "%d", &hist_end) != 1) |
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1
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367 usage_error = 1; |
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368 else |
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369 { |
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370 hist_beg--; |
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371 hist_end--; |
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372 } |
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373 } |
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374 else if (argc == 2) |
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375 { |
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1755
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376 if (sscanf (argv[1].c_str (), "%d", &hist_beg) != 1) |
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1
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377 usage_error = 1; |
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378 else |
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379 { |
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380 hist_beg--; |
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381 hist_end = hist_beg; |
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382 } |
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383 } |
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384 |
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385 if (hist_beg < 0 || hist_end < 0 || hist_beg > hist_count |
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386 || hist_end > hist_count) |
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387 { |
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64
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388 error ("%s: history specification out of range", warn_for); |
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1799
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389 return retval; |
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1
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390 } |
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391 |
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392 if (usage_error) |
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393 { |
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64
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394 usage ("%s [first] [last]", warn_for); |
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1799
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395 return retval; |
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1
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396 } |
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397 |
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398 if (hist_end < hist_beg) |
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399 { |
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400 int t = hist_end; |
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401 hist_end = hist_beg; |
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402 hist_beg = t; |
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403 reverse = 1; |
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404 } |
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405 |
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2936
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406 string name = file_ops::tempnam ("", "oct-"); |
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1
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407 |
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1755
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408 fstream file (name.c_str (), ios::out); |
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64
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409 |
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1
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410 if (! file) |
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411 { |
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1755
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412 error ("%s: couldn't open temporary file `%s'", warn_for, |
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413 name.c_str ()); |
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1799
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414 return retval; |
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1
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415 } |
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416 |
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417 if (reverse) |
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418 { |
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419 for (int i = hist_end; i >= hist_beg; i--) |
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1799
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420 file << hlist[i] << "\n"; |
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1
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421 } |
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422 else |
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423 { |
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424 for (int i = hist_beg; i <= hist_end; i++) |
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1799
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425 file << hlist[i] << "\n"; |
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1
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426 } |
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427 |
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428 file.close (); |
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429 |
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1755
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430 return name; |
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64
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431 } |
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432 |
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1755
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433 static void |
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434 do_edit_history (int argc, const string_vector& argv) |
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64
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435 { |
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1755
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436 string name = mk_tmp_hist_file (argc, argv, 0, "edit_history"); |
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64
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437 |
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1755
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438 if (name.empty ()) |
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64
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439 return; |
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440 |
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1358
|
441 // Call up our favorite editor on the file of commands. |
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1
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442 |
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2205
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443 string cmd = Veditor; |
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1799
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444 cmd.append (" "); |
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445 cmd.append (name); |
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1
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446 |
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1358
|
447 // Ignore interrupts while we are off editing commands. Should we |
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448 // maybe avoid using system()? |
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1
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449 |
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2705
|
450 volatile octave_interrupt_handler old_interrupt_handler |
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2554
|
451 = octave_ignore_interrupts (); |
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1443
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452 |
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1799
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453 system (cmd.c_str ()); |
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1443
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454 |
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2554
|
455 octave_set_interrupt_handler (old_interrupt_handler); |
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1
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456 |
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1358
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457 // Write the commands to the history file since parse_and_execute |
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|
458 // disables command line history while it executes. |
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1
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459 |
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1755
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460 fstream file (name.c_str (), ios::in); |
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1
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461 |
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462 char *line; |
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64
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463 int first = 1; |
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529
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464 while ((line = edit_history_readline (file)) != 0) |
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1
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465 { |
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1358
|
466 // Skip blank lines. |
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1
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467 |
|
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468 if (line[0] == '\n') |
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|
469 { |
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470 delete [] line; |
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|
471 continue; |
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472 } |
|
|
473 |
|
64
|
474 if (first) |
|
|
475 { |
|
|
476 first = 0; |
|
|
477 edit_history_repl_hist (line); |
|
|
478 } |
|
|
479 else |
|
|
480 edit_history_add_hist (line); |
|
1
|
481 } |
|
|
482 |
|
|
483 file.close (); |
|
|
484 |
|
1358
|
485 // Turn on command echo, so the output from this will make better |
|
|
486 // sense. |
|
1
|
487 |
|
2985
|
488 unwind_protect::begin_frame ("do_edit_history"); |
|
3018
|
489 |
|
2205
|
490 unwind_protect_int (Vecho_executing_commands); |
|
3018
|
491 unwind_protect_bool (input_from_tmp_history_file); |
|
|
492 |
|
2205
|
493 Vecho_executing_commands = ECHO_CMD_LINE; |
|
3018
|
494 input_from_tmp_history_file = true; |
|
1
|
495 |
|
2897
|
496 parse_and_execute (name); |
|
1
|
497 |
|
2985
|
498 unwind_protect::run_frame ("do_edit_history"); |
|
1
|
499 |
|
1358
|
500 // Delete the temporary file. Should probably be done with an |
|
|
501 // unwind_protect. |
|
1
|
502 |
|
1755
|
503 unlink (name.c_str ()); |
|
1
|
504 } |
|
|
505 |
|
1755
|
506 static void |
|
|
507 do_run_history (int argc, const string_vector& argv) |
|
64
|
508 { |
|
1755
|
509 string name = mk_tmp_hist_file (argc, argv, 1, "run_history"); |
|
64
|
510 |
|
1755
|
511 if (name.empty ()) |
|
64
|
512 return; |
|
|
513 |
|
1799
|
514 // Turn on command echo so the output from this will make better |
|
1358
|
515 // sense. |
|
64
|
516 |
|
2985
|
517 unwind_protect::begin_frame ("do_run_history"); |
|
3018
|
518 |
|
2205
|
519 unwind_protect_int (Vecho_executing_commands); |
|
3018
|
520 unwind_protect_bool (input_from_tmp_history_file); |
|
|
521 |
|
2205
|
522 Vecho_executing_commands = ECHO_CMD_LINE; |
|
3018
|
523 input_from_tmp_history_file = true; |
|
64
|
524 |
|
2897
|
525 parse_and_execute (name); |
|
64
|
526 |
|
2985
|
527 unwind_protect::run_frame ("do_run_history"); |
|
64
|
528 |
|
1799
|
529 // Delete the temporary file. |
|
|
530 |
|
|
531 // XXX FIXME XXX -- should probably be done using an unwind_protect. |
|
64
|
532 |
|
1755
|
533 unlink (name.c_str ()); |
|
64
|
534 } |
|
|
535 |
|
1957
|
536 DEFUN_TEXT (edit_history, args, , |
|
3332
|
537 "-*- texinfo -*-\n\ |
|
|
538 @deffn {Command} edit_history options\n\ |
|
|
539 If invoked with no arguments, @code{edit_history} allows you to edit the\n\ |
|
|
540 history list using the editor named by the variable @code{EDITOR}. The\n\ |
|
|
541 commands to be edited are first copied to a temporary file. When you\n\ |
|
|
542 exit the editor, Octave executes the commands that remain in the file.\n\ |
|
|
543 It is often more convenient to use @code{edit_history} to define functions \n\ |
|
|
544 rather than attempting to enter them directly on the command line.\n\ |
|
|
545 By default, the block of commands is executed as soon as you exit the\n\ |
|
|
546 editor. To avoid executing any commands, simply delete all the lines\n\ |
|
|
547 from the buffer before exiting the editor.\n\ |
|
|
548 \n\ |
|
|
549 The @code{edit_history} command takes two optional arguments specifying\n\ |
|
|
550 the history numbers of first and last commands to edit. For example,\n\ |
|
|
551 the command\n\ |
|
529
|
552 \n\ |
|
3332
|
553 @example\n\ |
|
|
554 edit_history 13\n\ |
|
|
555 @end example\n\ |
|
|
556 \n\ |
|
|
557 @noindent\n\ |
|
|
558 extracts all the commands from the 13th through the last in the history\n\ |
|
|
559 list. The command\n\ |
|
|
560 \n\ |
|
|
561 @example\n\ |
|
|
562 edit_history 13 169\n\ |
|
|
563 @end example\n\ |
|
|
564 \n\ |
|
|
565 @noindent\n\ |
|
|
566 only extracts commands 13 through 169. Specifying a larger number for\n\ |
|
|
567 the first command than the last command reverses the list of commands\n\ |
|
|
568 before placing them in the buffer to be edited. If both arguments are\n\ |
|
|
569 omitted, the previous command in the history list is used.\n\ |
|
3333
|
570 @end deffn") |
|
529
|
571 { |
|
2086
|
572 octave_value_list retval; |
|
529
|
573 |
|
1755
|
574 int argc = args.length () + 1; |
|
|
575 |
|
1968
|
576 string_vector argv = args.make_argv ("edit_history"); |
|
1755
|
577 |
|
|
578 if (error_state) |
|
|
579 return retval; |
|
529
|
580 |
|
|
581 do_edit_history (argc, argv); |
|
|
582 |
|
|
583 return retval; |
|
|
584 } |
|
|
585 |
|
1957
|
586 DEFUN_TEXT (history, args, , |
|
3332
|
587 "-*- texinfo -*-\n\ |
|
|
588 @deffn {Command} history options\n\ |
|
|
589 If invoked with no arguments, @code{history} displays a list of commands\n\ |
|
|
590 that you have executed. Valid options are:\n\ |
|
|
591 \n\ |
|
|
592 @table @code\n\ |
|
|
593 @item -w @var{file}\n\ |
|
|
594 Write the current history to the file @var{file}. If the name is\n\ |
|
|
595 omitted, use the default history file (normally @file{~/.octave_hist}).\n\ |
|
529
|
596 \n\ |
|
3332
|
597 @item -r @var{file}\n\ |
|
|
598 Read the file @var{file}, replacing the current history list with its\n\ |
|
|
599 contents. If the name is omitted, use the default history file\n\ |
|
|
600 (normally @file{~/.octave_hist}).\n\ |
|
|
601 \n\ |
|
3499
|
602 @item @var{n}\n\ |
|
|
603 Only display the most recent @var{n} lines of history.\n\ |
|
3332
|
604 \n\ |
|
|
605 @item -q\n\ |
|
|
606 Don't number the displayed lines of history. This is useful for cutting\n\ |
|
|
607 and pasting commands if you are using the X Window System.\n\ |
|
|
608 @end table\n\ |
|
|
609 \n\ |
|
|
610 For example, to display the five most recent commands that you have\n\ |
|
|
611 typed without displaying line numbers, use the command\n\ |
|
|
612 @kbd{history -q 5}.\n\ |
|
3333
|
613 @end deffn") |
|
529
|
614 { |
|
2086
|
615 octave_value_list retval; |
|
529
|
616 |
|
1755
|
617 int argc = args.length () + 1; |
|
|
618 |
|
1968
|
619 string_vector argv = args.make_argv ("history"); |
|
1755
|
620 |
|
|
621 if (error_state) |
|
|
622 return retval; |
|
529
|
623 |
|
|
624 do_history (argc, argv); |
|
|
625 |
|
|
626 return retval; |
|
|
627 } |
|
|
628 |
|
1957
|
629 DEFUN_TEXT (run_history, args, , |
|
3332
|
630 "-*- texinfo -*-\n\ |
|
|
631 @deffn {Command} run_history [first] [last]\n\ |
|
|
632 Similar to @code{edit_history}, except that the editor is not invoked,\n\ |
|
|
633 and the commands are simply executed as they appear in the history list.\n\ |
|
3333
|
634 @end deffn") |
|
529
|
635 { |
|
2086
|
636 octave_value_list retval; |
|
529
|
637 |
|
1755
|
638 int argc = args.length () + 1; |
|
|
639 |
|
1968
|
640 string_vector argv = args.make_argv ("run_history"); |
|
1755
|
641 |
|
|
642 if (error_state) |
|
|
643 return retval; |
|
529
|
644 |
|
|
645 do_run_history (argc, argv); |
|
|
646 |
|
|
647 return retval; |
|
|
648 } |
|
|
649 |
|
3016
|
650 static int |
|
|
651 history_size (void) |
|
|
652 { |
|
|
653 double val; |
|
|
654 if (builtin_real_scalar_variable ("history_size", val) |
|
|
655 && ! xisnan (val)) |
|
|
656 { |
|
|
657 int ival = NINT (val); |
|
|
658 if (ival >= 0 && ival == val) |
|
|
659 { |
|
|
660 Vhistory_size = ival; |
|
|
661 command_history::set_size (ival); |
|
|
662 return 0; |
|
|
663 } |
|
|
664 } |
|
|
665 gripe_invalid_value_specified ("history_size"); |
|
|
666 return -1; |
|
|
667 } |
|
|
668 |
|
|
669 static int |
|
|
670 history_file (void) |
|
|
671 { |
|
|
672 int status = 0; |
|
|
673 |
|
|
674 string s = builtin_string_variable ("history_file"); |
|
|
675 |
|
|
676 if (s.empty ()) |
|
|
677 { |
|
|
678 gripe_invalid_value_specified ("history_file"); |
|
|
679 status = -1; |
|
|
680 } |
|
|
681 else |
|
|
682 { |
|
|
683 Vhistory_file = s; |
|
|
684 command_history::set_file (file_ops::tilde_expand (s)); |
|
|
685 } |
|
|
686 |
|
|
687 return status; |
|
|
688 } |
|
|
689 |
|
|
690 static int |
|
|
691 saving_history (void) |
|
|
692 { |
|
|
693 Vsaving_history = check_preference ("saving_history"); |
|
|
694 |
|
|
695 command_history::ignore_entries (! Vsaving_history); |
|
|
696 |
|
|
697 return 0; |
|
|
698 } |
|
|
699 |
|
|
700 void |
|
|
701 symbols_of_oct_hist (void) |
|
|
702 { |
|
3258
|
703 DEFVAR (history_file, default_history_file (), history_file, |
|
3332
|
704 "-*- texinfo -*-\n\ |
|
|
705 @defvr {Built-in Variable} history_file\n\ |
|
|
706 This variable specifies the name of the file used to store command\n\ |
|
|
707 history. The default value is @code{\"~/.octave_hist\"}, but may be\n\ |
|
|
708 overridden by the environment variable @code{OCTAVE_HISTFILE}.\n\ |
|
3333
|
709 @end defvr"); |
|
3016
|
710 |
|
|
711 double tmp_hist_size = default_history_size (); |
|
|
712 |
|
3258
|
713 DEFVAR (history_size, tmp_hist_size, history_size, |
|
3332
|
714 "-*- texinfo -*-\n\ |
|
|
715 @defvr {Built-in Variable} history_size\n\ |
|
|
716 This variable specifies how many entries to store in the history file.\n\ |
|
|
717 The default value is @code{1024}, but may be overridden by the\n\ |
|
|
718 environment variable @code{OCTAVE_HISTSIZE}.\n\ |
|
3333
|
719 @end defvr"); |
|
3016
|
720 |
|
3258
|
721 DEFVAR (saving_history, 1.0, saving_history, |
|
3332
|
722 "-*- texinfo -*-\n\ |
|
|
723 @defvr {Built-in Variable} saving_history\n\ |
|
|
724 If the value of @code{saving_history} is nonzero, command entered\n\ |
|
|
725 on the command line are saved in the file specified by the variable\n\ |
|
|
726 @code{history_file}.\n\ |
|
3333
|
727 @end defvr"); |
|
3016
|
728 } |
|
|
729 |
|
1
|
730 /* |
|
|
731 ;;; Local Variables: *** |
|
|
732 ;;; mode: C++ *** |
|
|
733 ;;; End: *** |
|
|
734 */ |
