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annotate tests/builtin_getopts/builtin_getopts.t @ 707:cc06815e5504

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Add some tests about the behaviour of FreeBSD's /bin/sh builtin getopts(). It also has the "silent" option -- but it is undocumented.
author Franz Glasner <fzglas.hg@dom66.de>
date Wed, 02 Oct 2024 19:50:37 +0200
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707
cc06815e5504 Add some tests about the behaviour of FreeBSD's /bin/sh builtin getopts().
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1 Tests for the behaviour of the Shell's `getopts`
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2
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3 Shell is /bin/sh.
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4
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5 Setup
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6 =====
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7
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8 $ set -u
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9 $ . "${TESTDIR}/testsetup.sh"
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10
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11
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12 Standard
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13 ========
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14
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15 $ test_standard_1 -a -b bbb1
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16 OPTION: a with arg: `'
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17 OPTION: b with arg: `bbb1'
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18 OPTIND: 4
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19
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20 The variable will be set to ``?`` after the last option when getopts returns 1:
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21
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22 $ reset_getopts
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23 $ test_standard_1 -a -b bbb1
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24 OPTION: a with arg: `'
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25 OPTION: b with arg: `bbb1'
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26 OPTIND: 4
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27 $ test "$opt" = '?'
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28
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29 No option:
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30
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31 $ reset_getopts
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32 $ test_standard_1 arg1 arg2 args
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33 OPTIND: 1
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34 $ test "$opt" = '?'
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35
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36 OPTARG is **unset** at every invocation of `getopts` first:
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37
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38 $ reset_getopts
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39 $ test_standard_1 -a -b bbb1 -a
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40 OPTION: a with arg: `'
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41 OPTION: b with arg: `bbb1'
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42 OPTION: a with arg: `'
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43 OPTIND: 5
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44
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45 Option arguments are not checked for another option syntax:
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46
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47 $ reset_getopts
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48 $ test_standard_1 -a -b -a
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49 OPTION: a with arg: `'
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50 OPTION: b with arg: `-a'
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51 OPTIND: 4
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52
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53
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54 Missing arguments:
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55
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56 $ reset_getopts
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57 $ test_standard_1 -b
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58 No arg for -b option
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59 ERROR: unknown option
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60 OPTIND: 2
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61 $ test "$opt" = '?'
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62
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63 No abort on errors:
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64
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65 $ reset_getopts
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66 $ test_standard_1 -u -a
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67 Illegal option -u
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68 ERROR: unknown option
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69 OPTION: a with arg: `'
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70 OPTIND: 3
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71 $ test "$opt" = '?'
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72
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73 Abort processing with '--'
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74
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75 $ reset_getopts
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76 $ test_standard_1 -a -b xxx -- -a -b yyy
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77 OPTION: a with arg: `'
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78 OPTION: b with arg: `xxx'
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79 OPTIND: 5
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80 $ test "$opt" = '?'
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81
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82 '--' does not stop option processing when a required arg just before is missing
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83
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84 $ reset_getopts
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85 $ test_standard_1 -a -b -- -a -b yyy
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86 OPTION: a with arg: `'
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87 OPTION: b with arg: `--'
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88 OPTION: a with arg: `'
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89 OPTION: b with arg: `yyy'
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90 OPTIND: 7
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91
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92
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93 No Error Reports
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94 ================
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95
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96 This behaviour with a colon as the very first character in optstring is not
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97 documented. But it works similar to ksh93.
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98
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99 $ reset_getopts
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100 $ test_noreport_1 -a -b bbb1
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101 OPTION: a with arg: `'
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102 OPTION: b with arg: `bbb1'
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103 OPTIND: 4
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104
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105 The variable will be set to ``?`` after the last option when getopts returns 1:
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106
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107 $ reset_getopts
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108 $ test_standard_1 -a -b bbb1
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109 OPTION: a with arg: `'
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110 OPTION: b with arg: `bbb1'
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111 OPTIND: 4
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112 $ test "$opt" = '?'
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113
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114 No option:
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115
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116 $ reset_getopts
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117 $ test_noreport_1 arg1 arg2 args
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118 OPTIND: 1
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119 $ test "$opt" = '?'
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120
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121 OPTARG is **unset** at every invocation of `getopts` first:
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122
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123 $ reset_getopts
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124 $ test_noreport_1 -a -b bbb1 -a
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125 OPTION: a with arg: `'
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126 OPTION: b with arg: `bbb1'
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127 OPTION: a with arg: `'
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128 OPTIND: 5
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129
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130 Option arguments are not checked for another option syntax:
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131
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132 $ reset_getopts
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133 $ test_noreport_1 -a -b -a
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134 OPTION: a with arg: `'
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135 OPTION: b with arg: `-a'
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136 OPTIND: 4
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137
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138 Here FreeBSD's `/bin/sh` behaves like `ksh93`
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139
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140 Missing arguments are reported via ':' here:
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141
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142 $ reset_getopts
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143 $ test_noreport_1 -b
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144 ERROR: unknown option (colon): b
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145 OPTIND: 2
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146 $ test "$opt" = '?'
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147
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148 No abort on errors -- unknown options are reported via '?' here:
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149
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150 $ reset_getopts
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151 $ test_noreport_1 -u -a
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152 ERROR: unknown option: u
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153 OPTION: a with arg: `'
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154 OPTIND: 3
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155 $ test "$opt" = '?'
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156
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157 Abort processing with '--'
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158
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159 $ reset_getopts
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160 $ test_noreport_1 -a -b xxx -- -a -b yyy
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161 OPTION: a with arg: `'
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162 OPTION: b with arg: `xxx'
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163 OPTIND: 5
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164
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165 '--' does not stop option processing when a required arg just before is missing
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166
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167 $ reset_getopts
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168 $ test_noreport_1 -a -b -- -a -b yyy
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169 OPTION: a with arg: `'
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170 OPTION: b with arg: `--'
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171 OPTION: a with arg: `'
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172 OPTION: b with arg: `yyy'
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173 OPTIND: 7