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1 # -*- ksh -*-
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2 # Copyright (C) 1998 Free Software Foundation, Inc.
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3
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4 # This file is part of XEmacs.
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5
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6 # XEmacs is free software; you can redistribute it and/or modify it
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7 # under the terms of the GNU General Public License as published by the
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8 # Free Software Foundation; either version 2, or (at your option) any
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9 # later version.
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10
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11 # XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 # for more details.
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15
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16 # You should have received a copy of the GNU General Public License
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17 # along with XEmacs; see the file COPYING. If not, write to
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18 # the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 # Boston, MA 02111-1307, USA.
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20
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21 # Author: Martin Buchholz
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22
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23 # Some useful commands for debugging emacs with gdb 4.16 or better.
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24 # Install this as your .gdbinit file in your home directory,
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25 # or source this file from your .gdbinit
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26 # Configure xemacs with --debug, and compile with -g.
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27 #
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28 # See also the question of the XEmacs FAQ, titled
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29 # "How to Debug an XEmacs problem with a debugger".
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30 #
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31 # This can be used to debug XEmacs no matter how the following are
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32 # specified:
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33
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34 # USE_UNION_TYPE
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35
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36 # (the above all have configure equivalents)
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37
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38 # Some functions defined here require a running process, but most
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39 # don't. Considerable effort has been expended to this end.
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40
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41 # See the dbg_ C support code in src/alloc.c that allows the functions
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42 # defined in this file to work correctly.
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43
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44 set print union off
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45 set print pretty off
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46
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47 define decode_object
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48 set $obj = (unsigned long) $arg0
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49 if $obj & 1
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50 # It's an int
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51 set $val = $obj >> 1
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52 set $type = Lisp_Type_Int
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53 else
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54 set $type = $obj & dbg_typemask
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55 if $type == Lisp_Type_Char
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56 set $val = ($obj & dbg_valmask) >> dbg_gctypebits
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57 else
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58 # It's a record pointer
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59 set $val = $obj
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60 end
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61 end
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62
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63 if $type == Lisp_Type_Record
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64 set $lheader = (struct lrecord_header *) $val
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65 set $imp = lrecord_implementations_table[$lheader->type]
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66 else
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67 set $imp = -1
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68 end
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69 end
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70
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71 document decode_object
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72 Usage: decode_object lisp_object
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73 Extract implementation information from a Lisp Object.
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74 Defines variables $val, $type and $imp.
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75 end
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76
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77 define xint
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78 decode_object $arg0
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79 print ((long) $val)
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80 end
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81
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82 define xtype
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83 decode_object $arg0
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84 if $type == Lisp_Type_Int
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85 echo int\n
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86 else
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87 if $type == Lisp_Type_Char
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88 echo char\n
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89 else
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90 if $type == Lisp_Type_Symbol
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91 echo symbol\n
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92 else
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93 if $type == Lisp_Type_String
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94 echo string\n
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95 else
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96 if $type == Lisp_Type_Vector
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97 echo vector\n
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98 else
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99 if $type == Lisp_Type_Cons
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100 echo cons\n
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101 else
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102 printf "record type: %s\n", $imp->name
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103 # barf
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104 end
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105 end
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106 end
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107 end
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108 end
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109 end
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110 end
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111
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112 define lisp-shadows
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113 run -batch -vanilla -f list-load-path-shadows
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114 end
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115
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116 document lisp-shadows
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117 Usage: lisp-shadows
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118 Run xemacs to check for lisp shadows
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119 end
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120
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121 define environment-to-run-temacs
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122 unset env EMACSLOADPATH
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123 set env EMACSBOOTSTRAPLOADPATH=../lisp/:..
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124 set env EMACSBOOTSTRAPMODULEPATH=../modules/:..
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125 end
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126
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127 define run-temacs
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128 environment-to-run-temacs
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129 run -batch -l ../lisp/loadup.el run-temacs -q
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130 end
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131
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132 document run-temacs
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133 Usage: run-temacs
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134 Run temacs interactively, like xemacs.
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135 Use this with debugging tools (like purify) that cannot deal with dumping,
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136 or when temacs builds successfully, but xemacs does not.
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137 end
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138
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139 define update-elc
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140 environment-to-run-temacs
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141 run -batch -l ../lisp/update-elc.el
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142 end
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143
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144 document update-elc
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145 Usage: update-elc
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146 Run the core lisp byte compilation part of the build procedure.
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147 Use when debugging temacs, not xemacs!
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148 Use this when temacs builds successfully, but xemacs does not.
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149 end
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150
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151 define dump-temacs
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152 environment-to-run-temacs
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153 run -batch -l ../lisp/loadup.el dump
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154 end
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155
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156 document dump-temacs
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157 Usage: dump-temacs
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158 Run the dumping part of the build procedure.
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159 Use when debugging temacs, not xemacs!
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160 Use this when temacs builds successfully, but xemacs does not.
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161 end
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162
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163 # if you use Purify, do this:
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164 # export PURIFYOPTIONS='-pointer-mask=0x0fffffff'
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165
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166 define ldp
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167 printf "%s", "Lisp => "
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168 call debug_print($arg0)
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169 end
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170
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171 document ldp
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172 Usage: ldp lisp_object
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173 Print a Lisp Object value using the Lisp printer.
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174 Requires a running xemacs process.
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175 end
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176
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177 define lbt
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178 call debug_backtrace()
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179 end
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180
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181 document lbt
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182 Usage: lbt
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183 Print the current Lisp stack trace.
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184 Requires a running xemacs process.
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185 end
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186
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187
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188 define leval
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189 ldp Feval(Fcar(Fread_from_string(build_string($arg0),Qnil,Qnil)))
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190 end
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191
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192 document leval
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193 Usage: leval "SEXP"
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194 Eval a lisp expression.
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195 Requires a running xemacs process.
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196
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197 Example:
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198 (gdb) leval "(+ 1 2)"
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199 Lisp ==> 3
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200 end
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201
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202
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203 define wtype
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204 print $arg0->core.widget_class->core_class.class_name
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205 end
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206
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207 define xtname
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208 print XrmQuarkToString(((Object)($arg0))->object.xrm_name)
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209 end
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210
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211 # GDB's command language makes you want to ...
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212
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213 define pstruct
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214 set $xstruct = (struct $arg0 *) $val
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215 print $xstruct
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216 print *$xstruct
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217 end
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218
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219 define pobj
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220 decode_object $arg0
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221 if $type == Lisp_Type_Int
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222 printf "Integer: %d\n", $val
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223 else
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224 if $type == Lisp_Type_Char
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225 if $val > 32 && $val < 128
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226 printf "Char: %c\n", $val
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227 else
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228 printf "Char: %d\n", $val
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229 end
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230 else
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231 if $type == Lisp_Type_String || $imp == &lrecord_string
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232 pstruct Lisp_String
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233 else
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234 if $type == Lisp_Type_Cons || $imp == &lrecord_cons
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235 pstruct Lisp_Cons
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236 else
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237 if $type == Lisp_Type_Symbol || $imp == &lrecord_symbol
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238 pstruct Lisp_Symbol
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239 printf "Symbol name: %s\n", $xstruct->name->data
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240 else
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241 if $type == Lisp_Type_Vector || $imp == &lrecord_vector
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242 pstruct Lisp_Vector
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243 printf "Vector of length %d\n", $xstruct->size
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244 #print *($xstruct->data) @ $xstruct->size
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245 else
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246 if $imp == &lrecord_bit_vector
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247 pstruct Lisp_Bit_Vector
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248 else
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249 if $imp == &lrecord_buffer
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250 pstruct buffer
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251 else
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252 if $imp == &lrecord_char_table
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253 pstruct Lisp_Char_Table
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254 else
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255 if $imp == &lrecord_char_table_entry
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256 pstruct Lisp_Char_Table_Entry
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257 else
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258 if $imp == &lrecord_charset
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259 pstruct Lisp_Charset
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260 else
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261 if $imp == &lrecord_coding_system
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262 pstruct Lisp_Coding_System
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263 else
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264 if $imp == &lrecord_color_instance
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265 pstruct Lisp_Color_Instance
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266 else
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267 if $imp == &lrecord_command_builder
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268 pstruct command_builder
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269 else
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270 if $imp == &lrecord_compiled_function
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271 pstruct Lisp_Compiled_Function
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272 else
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273 if $imp == &lrecord_console
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274 pstruct console
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275 else
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276 if $imp == &lrecord_database
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277 pstruct Lisp_Database
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278 else
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279 if $imp == &lrecord_device
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280 pstruct device
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281 else
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282 if $imp == &lrecord_event
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283 pstruct Lisp_Event
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284 else
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285 if $imp == &lrecord_extent
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286 pstruct extent
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287 else
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288 if $imp == &lrecord_extent_auxiliary
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289 pstruct extent_auxiliary
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290 else
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291 if $imp == &lrecord_extent_info
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292 pstruct extent_info
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293 else
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294 if $imp == &lrecord_face
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295 pstruct Lisp_Face
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296 else
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297 if $imp == &lrecord_float
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298 pstruct Lisp_Float
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299 else
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300 if $imp == &lrecord_font_instance
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301 pstruct Lisp_Font_Instance
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302 else
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303 if $imp == &lrecord_frame
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304 pstruct frame
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305 else
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306 if $imp == &lrecord_glyph
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307 pstruct Lisp_Glyph
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308 else
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309 if $imp == &lrecord_hash_table
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310 pstruct Lisp_Hash_Table
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311 else
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312 if $imp == &lrecord_image_instance
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313 pstruct Lisp_Image_Instance
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314 else
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315 if $imp == &lrecord_keymap
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316 pstruct Lisp_Keymap
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317 else
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318 if $imp == &lrecord_lcrecord_list
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319 pstruct lcrecord_list
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320 else
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321 if $imp == &lrecord_lstream
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322 pstruct lstream
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323 else
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324 if $imp == &lrecord_marker
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325 pstruct Lisp_Marker
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326 else
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327 if $imp == &lrecord_opaque
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328 pstruct Lisp_Opaque
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329 else
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330 if $imp == &lrecord_opaque_ptr
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331 pstruct Lisp_Opaque_Ptr
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332 else
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333 if $imp == &lrecord_popup_data
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334 pstruct popup_data
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335 else
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336 if $imp == &lrecord_process
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337 pstruct Lisp_Process
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338 else
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339 if $imp == &lrecord_range_table
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340 pstruct Lisp_Range_Table
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341 else
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342 if $imp == &lrecord_specifier
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343 pstruct Lisp_Specifier
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344 else
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345 if $imp == &lrecord_subr
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346 pstruct Lisp_Subr
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347 else
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348 if $imp == &lrecord_symbol_value_buffer_local
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349 pstruct symbol_value_buffer_local
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350 else
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351 if $imp == &lrecord_symbol_value_forward
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352 pstruct symbol_value_forward
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353 else
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354 if $imp == &lrecord_symbol_value_lisp_magic
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355 pstruct symbol_value_lisp_magic
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356 else
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357 if $imp == &lrecord_symbol_value_varalias
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358 pstruct symbol_value_varalias
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359 else
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360 if $imp == &lrecord_toolbar_button
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361 pstruct toolbar_button
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362 else
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363 if $imp == &lrecord_tooltalk_message
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364 pstruct Lisp_Tooltalk_Message
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365 else
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366 if $imp == &lrecord_tooltalk_pattern
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367 pstruct Lisp_Tooltalk_Pattern
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368 else
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369 if $imp == &lrecord_weak_list
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370 pstruct weak_list
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371 else
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372 if $imp == &lrecord_window
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373 pstruct window
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374 else
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375 if $imp == &lrecord_window_configuration
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376 pstruct window_config
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377 else
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378 echo Unknown Lisp Object type\n
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379 print $arg0
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380 # Barf, gag, retch
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381 end
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382 end
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383 end
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384 end
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385 end
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386 end
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387 end
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388 end
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389 end
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390 end
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391 end
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392 end
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393 end
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394 end
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395 end
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396 # Repeat after me... gdb sux, gdb sux, gdb sux...
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397 end
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398 end
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399 end
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400 end
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401 end
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402 end
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403 end
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404 end
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405 end
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406 end
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407 end
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408 end
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409 end
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410 end
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411 end
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412 end
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413 end
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414 end
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415 # Are we having fun yet??
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416 end
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417 end
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418 end
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419 end
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420 end
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421 end
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422 end
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423 end
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424 end
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425 end
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426 end
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427 end
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428 end
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429 end
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430 end
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431 end
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432 end
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433 end
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434
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435 document pobj
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436 Usage: pobj lisp_object
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437 Print the internal C structure of a underlying Lisp Object.
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438 end
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439
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440 # -------------------------------------------------------------
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441 # functions to test the debugging support itself.
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442 # If you change this file, make sure the following still work...
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443 # -------------------------------------------------------------
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444 define test_xtype
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445 printf "Vemacs_major_version: "
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446 xtype Vemacs_major_version
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447 printf "Vhelp_char: "
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448 xtype Vhelp_char
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449 printf "Qnil: "
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450 xtype Qnil
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451 printf "Qunbound: "
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452 xtype Qunbound
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453 printf "Vobarray: "
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454 xtype Vobarray
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455 printf "Vall_weak_lists: "
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456 xtype Vall_weak_lists
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457 printf "Vxemacs_codename: "
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458 xtype Vxemacs_codename
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459 end
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460
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461 define test_pobj
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462 printf "Vemacs_major_version: "
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463 pobj Vemacs_major_version
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464 printf "Vhelp_char: "
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465 pobj Vhelp_char
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466 printf "Qnil: "
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467 pobj Qnil
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468 printf "Qunbound: "
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469 pobj Qunbound
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470 printf "Vobarray: "
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471 pobj Vobarray
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472 printf "Vall_weak_lists: "
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473 pobj Vall_weak_lists
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474 printf "Vxemacs_codename: "
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475 pobj Vxemacs_codename
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476 end
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477
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