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1 | # test the expansion of ${array[@]} and ${array[*]}, both quoted and
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2 | # unquoted. the expansions should be exactly analogous to the
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3 | # expansions of $@ and $* quoted and unquoted
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4 | A=(a b)
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5 |
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6 | recho "${A[*]}"
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7 |
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8 | # If IFS is null, the parameters are joined without separators
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9 | IFS=''
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10 | recho "${A[*]}"
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11 |
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12 | # If IFS is unset, the parameters are separated by spaces
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13 | unset IFS
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14 | recho "${A[*]}"
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15 |
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16 | recho "${A[@]}"
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17 | recho ${A[@]}
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18 |
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19 | IFS='/'
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20 | A=(bob 'tom dick harry' joe)
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21 | set ${A[*]}
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22 | recho $#
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23 | recho $1
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24 | recho $2
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25 | recho $3
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26 |
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27 | A=(bob 'tom dick harry' joe)
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28 | set ${A[*]}
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29 | recho $#
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30 | recho $1
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31 | recho $2
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32 | recho $3
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33 |
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34 | A=(bob 'tom dick harry' joe)
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35 | set ${A[@]}
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36 | recho $#
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37 | recho $1
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38 | recho $2
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39 | recho $3
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40 |
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41 | A=(bob 'tom dick harry' joe)
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42 | set ${A[@]}
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43 | recho $#
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44 | recho $1
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45 | recho $2
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46 | recho $3
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47 |
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48 | # according to POSIX.2, unquoted $* should expand to multiple words if
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49 | # $IFS is null, just like unquoted $@
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50 | IFS=''
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51 | A=(bob 'tom dick harry' joe)
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52 | set "${A[*]}"
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53 | recho $#
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54 | recho $1
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55 | recho $2
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56 | recho $3
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57 |
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58 | A=(bob 'tom dick harry' joe)
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59 | set ${A[*]}
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60 | recho $#
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61 | recho $1
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62 | recho $2
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63 | recho $3
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64 |
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65 | A=(bob 'tom dick harry' joe)
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66 | set ${A[@]}
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67 | recho $#
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68 | recho $1
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69 | recho $2
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70 | recho $3
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71 |
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72 | # if IFS is unset, the individual positional parameters are split on
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73 | # " \t\n" if $* or $@ are unquoted
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74 | unset IFS
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75 | A=(bob 'tom dick harry' joe)
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76 | set ${A[*]}
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77 | recho $#
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78 | recho $1
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79 | recho $2
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80 | recho $3
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81 |
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82 | A=(bob 'tom dick harry' joe)
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83 | set ${A[@]}
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84 | recho $#
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85 | recho $1
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86 | recho $2
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87 | recho $3
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88 |
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89 | # but not for "$@" or "$*"
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90 | A=(bob 'tom dick harry' joe)
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91 | set "${A[*]}"
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92 | recho $#
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93 | recho $1
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94 | recho $2
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95 | recho $3
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96 |
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97 | A=(bob 'tom dick harry' joe)
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98 | set "${A[@]}"
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99 | recho $#
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100 | recho $1
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101 | recho $2
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102 | recho $3
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103 |
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104 | # these should both expand the value of A to multiple words
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105 | A=(a b c d e)
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106 | IFS=""
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107 | recho ${A[@]}
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108 | recho "${A[@]}"
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109 |
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110 | # this example is straight from the POSIX.2 rationale and adapted to arrays
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111 | A=(foo bar bam)
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112 |
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113 | recho "${A[@]}"
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114 | recho "${A[*]}"
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115 |
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116 | unset IFS
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117 |
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118 | recho "${A[@]}"
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119 | recho ${A[@]}
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120 | recho "${A[*]}"
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