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annotate scripts/plot/appearance/whitebg.m @ 19867:9fc020886ae9

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maint: Clean up m-files to follow Octave coding conventions. Try to trim long lines to < 80 chars. Use '##' for single line comments. Use '(...)' around tests for if/elseif/switch/while. Abut cell indexing operator '{' next to variable. Abut array indexing operator '(' next to variable. Use space between negation operator '!' and following expression. Use two newlines between endfunction and start of %!test or %!demo code. Remove unnecessary parens grouping between short-circuit operators. Remove stray extra spaces (typos) between variables and assignment operators. Remove stray extra spaces from ends of lines.
author Rik <rik@octave.org>
date Mon, 23 Feb 2015 14:54:39 -0800
parents 4197fc428c7d
children
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rev   line source
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1 ## Copyright (C) 2010-2015 David Bateman
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {} whitebg ()
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21 ## @deftypefnx {Function File} {} whitebg (@var{color})
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22 ## @deftypefnx {Function File} {} whitebg ("none")
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23 ## @deftypefnx {Function File} {} whitebg (@var{hfig}, @dots{})
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24 ## Invert the colors in the current color scheme.
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25 ##
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26 ## The root properties are also inverted such that all subsequent plot use the
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27 ## new color scheme.
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28 ##
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29 ## If the optional argument @var{color} is present then the background color
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30 ## is set to @var{color} rather than inverted. @var{color} may be a string
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31 ## representing one of the eight known colors or an RGB triplet. The special
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32 ## string argument @qcode{"none"} restores the plot to the default colors.
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33 ##
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34 ## If the first argument @var{hfig} is a figure handle, then operate on
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35 ## this figure rather than the current figure returned by @code{gcf}. The
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36 ## root properties will not be changed.
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37 ## @seealso{reset, get, set}
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38 ## @end deftypefn
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39
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40 function whitebg (varargin)
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41 h = 0;
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42 color = NaN;
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43
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44 if (nargin > 0 && nargin < 3)
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45 if (ishandle (varargin{1}))
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46 h = varargin{1};
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47 if (nargin == 2)
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48 color = varargin{2};
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49 endif
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50 elseif (nargin == 1)
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51 color = varargin{1};
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52 else
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53 print_usage ();
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54 endif
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55 elseif (nargin != 0)
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56 print_usage ();
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57 endif
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58
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59 typ = get (h, "type");
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60
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61 if (strcmp (typ, "root"))
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62 isroot = true;
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63 fig = gcf ();
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64 elseif (strcmp (typ, "figure"))
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65 isroot = false;
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66 fig = h;
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67 else
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68 error ("expecting a figure handle");
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69 endif
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70
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71 axes = findall (fig, "type", "axes");
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72 if (isnan (color))
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73 ## Root figure. Set the default axes and figure properties so that
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74 ## subsequent plots have the new color scheme
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75 if (isroot)
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76 fac = get (0, "factory");
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77 fields = fieldnames (fac);
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78 fieldindex = intersect (find (! cellfun ("isempty", regexp (fields, 'color'))), union (find (! cellfun ("isempty", regexp (fields, 'factoryaxes.*'))), find (!cellfun ("isempty", regexp (fields, 'factoryfigure.*')))));
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79
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80 ## Check whether the factory value has been replaced
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81 for nf = 1 : numel (fieldindex);
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82 defaultfield = strrep (fields{fieldindex(nf)}, "factory", "default");
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83 try
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84 defaultvalue = 1 - get (0, defaultfield{n});
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85 catch
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86 field = fields{fieldindex(nf)};
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87 defaultvalue = 1 - subsref (fac, struct ("type", ".", "subs", field));
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88 end_try_catch
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89 set (0, defaultfield, defaultvalue);
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90 endfor
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91 endif
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92
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93 ## Load all objects which qualify for being searched.
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94 handles = fig;
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95 h = fig;
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96 while (numel (handles))
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97 children = [];
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98 for n = 1 : numel (handles)
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99 children = union (children, get (handles(n), "children"));
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100 endfor
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101 handles = children;
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102 h = union (h, children);
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103 endwhile
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104
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105 for nh = 1 : numel (h)
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106 p = get (h (nh));
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107 fields = fieldnames (p);
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108 fieldindex = find (!cellfun ("isempty", regexp (fields, 'color')));
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109 if (numel (fieldindex))
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110 for nf = 1 : numel (fieldindex);
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111 field = fields{fieldindex(nf)};
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112 c = subsref (p, struct ("type", ".", "subs", field));
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113 if (! ischar (c) && columns (c) == 3)
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114 set (h (nh), field, 1 - c);
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115 endif
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116 endfor
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117 endif
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118
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119 ## If h(nh) is a figure or axes invert default color properties
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120 typ = subsref (p, struct ("type", ".", "subs", "type"));
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121 if (strcmp (typ, "axes") || strcmp (typ, "figure"))
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122 def = get (h (nh), "default");
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123 fields = fieldnames (def);
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124 if (! isempty (fields))
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125 fieldindex = find (! cellfun ("isempty", regexp (fields, 'color')));
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126 for nf = 1 : numel (fieldindex)
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127 defaultfield = fields{fieldindex(nf)};
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128 defaultvalue = ...
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129 1 - subsref (def, struct ("type", ".", "subs", defaultfield));
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130 set (h (nh), defaultfield, defaultvalue);
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131 endfor
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132 endif
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133 endif
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134 endfor
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135 else
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136 ## FIXME
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137 ## Is this the right thing to do in this case?
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138 set (findall (fig, "type", "axes"), "color", color);
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139 if (isroot)
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140 defs = get (0, "default");
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141 if (isfield (defs, "defaultaxescolor")
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142 && strcmp (defs.defaultaxescolor, "none"))
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143 set (0, "defaultaxescolor", color);
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144 endif
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145 endif
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146 endif
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147 endfunction
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148
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149
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150 %!test
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151 %! dac = get (0, "defaultaxescolor");
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152 %! dfc = get (0, "defaultfigurecolor");
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153 %! hf = figure ("visible", "off");
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John W. Eaton <jwe@octave.org>
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154 %! unwind_protect
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Kai Habel <kai.habel@gmx.de>
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155 %! l = line;
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Kai Habel <kai.habel@gmx.de>
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156 %! assert (get (hf, "color"), dfc);
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Kai Habel <kai.habel@gmx.de>
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157 %! assert (get (gca, "color"), dac);
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Kai Habel <kai.habel@gmx.de>
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158 %! whitebg (hf);
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Kai Habel <kai.habel@gmx.de>
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159 %! assert (get (hf, "color"), 1 - dfc);
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Kai Habel <kai.habel@gmx.de>
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160 %! assert (get (gca, "color"), 1 - dac);
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Kai Habel <kai.habel@gmx.de>
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161 %! c = [0.2 0.2 0.2];
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Kai Habel <kai.habel@gmx.de>
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162 %! whitebg (hf, c);
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Kai Habel <kai.habel@gmx.de>
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163 %! assert (get (hf, "color"), 1 - dfc);
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Kai Habel <kai.habel@gmx.de>
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164 %! assert (get (gca, "color"), c);
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Kai Habel <kai.habel@gmx.de>
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165 %! unwind_protect_cleanup
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Kai Habel <kai.habel@gmx.de>
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166 %! close (hf);
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Kai Habel <kai.habel@gmx.de>
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167 %! end_unwind_protect
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Rik <octave@nomad.inbox5.com>
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168