| 1 | ## compare_shells: bash mksh
|
| 2 | ## oils_failures_allowed: 2
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| 3 |
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| 4 | #### nounset / set -u with empty array (bug in bash 4.3, fixed in 4.4)
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| 5 |
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| 6 | # http://lists.gnu.org/archive/html/help-bash/2017-09/msg00005.html
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| 7 |
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| 8 | set -o nounset
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| 9 | empty=()
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| 10 | argv.py "${empty[@]}"
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| 11 | echo status=$?
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| 12 | ## STDOUT:
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| 13 | []
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| 14 | status=0
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| 15 | ## END
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| 16 | ## BUG mksh stdout-json: ""
|
| 17 | ## BUG mksh status: 1
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| 18 |
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| 19 | #### local array
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| 20 | # mksh support local variables, but not local arrays, oddly.
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| 21 | f() {
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| 22 | local a=(1 '2 3')
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| 23 | argv.py "${a[0]}"
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| 24 | }
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| 25 | f
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| 26 | ## stdout: ['1']
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| 27 | ## status: 0
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| 28 | ## BUG mksh status: 1
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| 29 | ## BUG mksh stdout-json: ""
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| 30 |
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| 31 | #### Command with with word splitting in array
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| 32 | array=('1 2' $(echo '3 4'))
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| 33 | argv.py "${array[@]}"
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| 34 | ## stdout: ['1 2', '3', '4']
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| 35 |
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| 36 | #### space before ( in array initialization
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| 37 | # NOTE: mksh accepts this, but bash doesn't
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| 38 | a= (1 '2 3')
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| 39 | echo $a
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| 40 | ## status: 2
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| 41 | ## OK mksh status: 0
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| 42 | ## OK mksh stdout: 1
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| 43 |
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| 44 | #### array over multiple lines
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| 45 | a=(
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| 46 | 1
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| 47 | '2 3'
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| 48 | )
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| 49 | argv.py "${a[@]}"
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| 50 | ## stdout: ['1', '2 3']
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| 51 | ## status: 0
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| 52 |
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| 53 | #### array with invalid token
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| 54 | a=(
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| 55 | 1
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| 56 | &
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| 57 | '2 3'
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| 58 | )
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| 59 | argv.py "${a[@]}"
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| 60 | ## status: 2
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| 61 | ## OK mksh status: 1
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| 62 |
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| 63 | #### array with empty string
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| 64 | empty=('')
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| 65 | argv.py "${empty[@]}"
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| 66 | ## stdout: ['']
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| 67 |
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| 68 | #### Retrieve index
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| 69 | a=(1 '2 3')
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| 70 | argv.py "${a[1]}"
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| 71 | ## stdout: ['2 3']
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| 72 |
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| 73 | #### Retrieve out of bounds index
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| 74 | a=(1 '2 3')
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| 75 | argv.py "${a[3]}"
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| 76 | ## stdout: ['']
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| 77 |
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| 78 | #### Negative index
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| 79 | a=(1 '2 3')
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| 80 | argv.py "${a[-1]}" "${a[-2]}" "${a[-5]}" # last one out of bounds
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| 81 | ## stdout: ['2 3', '1', '']
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| 82 | ## N-I mksh stdout: ['', '', '']
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| 83 |
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| 84 | #### Negative index and sparse array
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| 85 | a=(0 1 2 3 4)
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| 86 | unset a[1]
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| 87 | unset a[4]
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| 88 | echo "${a[@]}"
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| 89 | echo -1 ${a[-1]}
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| 90 | echo -2 ${a[-2]}
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| 91 | echo -3 ${a[-3]}
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| 92 | echo -4 ${a[-4]}
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| 93 | echo -5 ${a[-5]}
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| 94 |
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| 95 | a[-1]+=0 # append 0 on the end
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| 96 | echo ${a[@]}
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| 97 | (( a[-1] += 42 ))
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| 98 | echo ${a[@]}
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| 99 |
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| 100 | ## STDOUT:
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| 101 | 0 2 3
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| 102 | -1 3
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| 103 | -2 2
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| 104 | -3
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| 105 | -4 0
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| 106 | -5
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| 107 | 0 2 30
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| 108 | 0 2 72
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| 109 | ## END
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| 110 | ## BUG mksh STDOUT:
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| 111 | 0 2 3
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| 112 | -1
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| 113 | -2
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| 114 | -3
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| 115 | -4
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| 116 | -5
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| 117 | 0 2 3 0
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| 118 | 0 2 3 42
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| 119 | ## END
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| 120 |
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| 121 | #### Negative index and sparse array
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| 122 | a=(0 1)
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| 123 | unset 'a[-1]' # remove last element
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| 124 | a+=(2 3)
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| 125 | echo ${a[0]} $((a[0]))
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| 126 | echo ${a[1]} $((a[1]))
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| 127 | echo ${a[2]} $((a[2]))
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| 128 | echo ${a[3]} $((a[3]))
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| 129 | ## STDOUT:
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| 130 | 0 0
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| 131 | 2 2
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| 132 | 3 3
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| 133 | 0
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| 134 | ## END
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| 135 | ## BUG mksh STDOUT:
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| 136 | 0 0
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| 137 | 1 1
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| 138 | 2 2
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| 139 | 3 3
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| 140 | ## END
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| 141 |
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| 142 | #### Length after unset
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| 143 | a=(0 1 2 3)
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| 144 | unset a[-1]
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| 145 | echo len=${#a[@]}
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| 146 | unset a[-1]
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| 147 | echo len=${#a[@]}
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| 148 | ## STDOUT:
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| 149 | len=3
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| 150 | len=2
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| 151 | ## END
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| 152 | ## BUG mksh STDOUT:
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| 153 | len=4
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| 154 | len=4
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| 155 | ## END
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| 156 |
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| 157 | #### Retrieve index that is a variable
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| 158 | a=(1 '2 3')
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| 159 | i=1
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| 160 | argv.py "${a[$i]}"
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| 161 | ## stdout: ['2 3']
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| 162 |
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| 163 | #### Retrieve index that is a variable without $
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| 164 | a=(1 '2 3')
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| 165 | i=5
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| 166 | argv.py "${a[i-4]}"
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| 167 | ## stdout: ['2 3']
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| 168 |
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| 169 | #### Retrieve index that is a command sub
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| 170 | a=(1 '2 3')
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| 171 | argv.py "${a[$(echo 1)]}"
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| 172 | ## stdout: ['2 3']
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| 173 |
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| 174 | #### Retrieve array indices with ${!a}
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| 175 | a=(1 '2 3')
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| 176 | argv.py "${!a[@]}"
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| 177 | ## stdout: ['0', '1']
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| 178 |
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| 179 | #### Retrieve sparse array indices with ${!a}
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| 180 | a=()
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| 181 | (( a[99]=1 ))
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| 182 | argv.py "${!a[@]}"
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| 183 | ## STDOUT:
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| 184 | ['99']
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| 185 | ## END
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| 186 |
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| 187 | #### ${!a[1]} is named ref in bash
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| 188 | # mksh ignores it
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| 189 | foo=bar
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| 190 | a=('1 2' foo '2 3')
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| 191 | argv.py "${!a[1]}"
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| 192 | ## status: 0
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| 193 | ## stdout: ['bar']
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| 194 | ## N-I mksh stdout: ['a[1]']
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| 195 |
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| 196 | #### ${!a} on array
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| 197 |
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| 198 | # bash gives empty string because it's like a[0]
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| 199 | # mksh gives the name of the variable with !. Very weird.
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| 200 |
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| 201 | a=(1 '2 3')
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| 202 | argv.py "${!a}"
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| 203 |
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| 204 | ## stdout: ['']
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| 205 | ## status: 0
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| 206 | ## BUG mksh stdout: ['a']
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| 207 | ## BUG mksh status: 0
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| 208 |
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| 209 | #### All elements unquoted
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| 210 | a=(1 '2 3')
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| 211 | argv.py ${a[@]}
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| 212 | ## stdout: ['1', '2', '3']
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| 213 |
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| 214 | #### All elements quoted
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| 215 | a=(1 '2 3')
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| 216 | argv.py "${a[@]}"
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| 217 | ## stdout: ['1', '2 3']
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| 218 |
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| 219 | #### $*
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| 220 | a=(1 '2 3')
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| 221 | argv.py ${a[*]}
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| 222 | ## stdout: ['1', '2', '3']
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| 223 |
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| 224 | #### "$*"
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| 225 | a=(1 '2 3')
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| 226 | argv.py "${a[*]}"
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| 227 | ## stdout: ['1 2 3']
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| 228 |
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| 229 | #### Interpolate array into array
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| 230 | a=(1 '2 3')
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| 231 | a=(0 "${a[@]}" '4 5')
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| 232 | argv.py "${a[@]}"
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| 233 | ## stdout: ['0', '1', '2 3', '4 5']
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| 234 |
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| 235 | #### Exporting array doesn't do anything, not even first element
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| 236 | # bash parses, but doesn't execute.
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| 237 | # mksh gives syntax error -- parses differently with 'export'
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| 238 | # osh no longer parses this statically.
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| 239 |
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| 240 | export PYTHONPATH
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| 241 |
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| 242 | PYTHONPATH=mystr # NOTE: in bash, this doesn't work afterward!
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| 243 | printenv.py PYTHONPATH
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| 244 |
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| 245 | PYTHONPATH=(myarray)
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| 246 | printenv.py PYTHONPATH
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| 247 |
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| 248 | PYTHONPATH=(a b c)
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| 249 | printenv.py PYTHONPATH
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| 250 |
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| 251 | ## status: 0
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| 252 | ## STDOUT:
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| 253 | mystr
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| 254 | None
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| 255 | None
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| 256 | ## END
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| 257 |
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| 258 | #### strict_array prevents exporting array
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| 259 |
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| 260 | shopt -s strict_array
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| 261 |
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| 262 | export PYTHONPATH
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| 263 | PYTHONPATH=(a b c)
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| 264 | printenv.py PYTHONPATH
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| 265 |
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| 266 | ## status: 1
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| 267 | ## STDOUT:
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| 268 | ## END
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| 269 |
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| 270 | ## N-I bash/mksh status: 0
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| 271 | ## N-I bash/mksh STDOUT:
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| 272 | None
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| 273 | ## END
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| 274 |
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| 275 | #### Arrays can't be used as env bindings
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| 276 | # Hm bash it treats it as a string!
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| 277 | A=a B=(b b) printenv.py A B
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| 278 | ## status: 2
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| 279 | ## stdout-json: ""
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| 280 | ## OK bash STDOUT:
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| 281 | a
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| 282 | (b b)
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| 283 | ## END
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| 284 | ## OK bash status: 0
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| 285 | ## OK mksh status: 1
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| 286 |
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| 287 | #### Associative arrays can't be used as env bindings either
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| 288 | A=a B=([k]=v) printenv.py A B
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| 289 | ## status: 2
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| 290 | ## stdout-json: ""
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| 291 | ## OK bash STDOUT:
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| 292 | a
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| 293 | ([k]=v)
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| 294 | ## OK bash status: 0
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| 295 | ## OK mksh status: 1
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| 296 |
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| 297 | #### Set element
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| 298 | a=(1 '2 3')
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| 299 | a[0]=9
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| 300 | argv.py "${a[@]}"
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| 301 | ## stdout: ['9', '2 3']
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| 302 |
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| 303 | #### Set element with var ref
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| 304 | a=(1 '2 3')
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| 305 | i=0
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| 306 | a[$i]=9
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| 307 | argv.py "${a[@]}"
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| 308 | ## stdout: ['9', '2 3']
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| 309 |
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| 310 | #### Set element with array ref
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| 311 | # This makes parsing a little more complex. Anything can be inside [],
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| 312 | # including other [].
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| 313 | a=(1 '2 3')
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| 314 | i=(0 1)
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| 315 | a[${i[1]}]=9
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| 316 | argv.py "${a[@]}"
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| 317 | ## stdout: ['1', '9']
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| 318 |
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| 319 | #### Set array item to array
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| 320 | a=(1 2)
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| 321 | a[0]=(3 4)
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| 322 | echo "status=$?"
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| 323 | ## stdout-json: ""
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| 324 | ## status: 2
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| 325 | ## N-I mksh status: 1
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| 326 | ## BUG bash stdout: status=1
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| 327 | ## BUG bash status: 0
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| 328 |
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| 329 | #### Slice of array with [@]
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| 330 | # mksh doesn't support this syntax! It's a bash extension.
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| 331 | a=(1 2 3)
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| 332 | argv.py "${a[@]:1:2}"
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| 333 | ## stdout: ['2', '3']
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| 334 | ## N-I mksh status: 1
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| 335 | ## N-I mksh stdout-json: ""
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| 336 |
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| 337 | #### Negative slice begin
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| 338 | # mksh doesn't support this syntax! It's a bash extension.
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| 339 | # NOTE: for some reason -2) has to be in parens? Ah that's because it
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| 340 | # conflicts with :-! That's silly. You can also add a space.
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| 341 | a=(1 2 3 4 5)
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| 342 | argv.py "${a[@]:(-4)}"
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| 343 | ## stdout: ['2', '3', '4', '5']
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| 344 | ## N-I mksh status: 1
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| 345 | ## N-I mksh stdout-json: ""
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| 346 |
|
| 347 | #### Negative slice length
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| 348 | a=(1 2 3 4 5)
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| 349 | argv.py "${a[@]: 1: -3}"
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| 350 | ## status: 1
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| 351 | ## stdout-json: ""
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| 352 |
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| 353 | #### Slice with arithmetic
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| 354 | a=(1 2 3)
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| 355 | i=5
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| 356 | argv.py "${a[@]:i-4:2}"
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| 357 | ## stdout: ['2', '3']
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| 358 | ## N-I mksh status: 1
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| 359 | ## N-I mksh stdout-json: ""
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| 360 |
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| 361 | #### Number of elements
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| 362 | a=(1 '2 3')
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| 363 | echo "${#a[@]}" ${#a[@]} # bug fix: also test without quotes
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| 364 | ## stdout: 2 2
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| 365 |
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| 366 | #### Length of an element
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| 367 | a=(1 '2 3')
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| 368 | echo "${#a[1]}"
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| 369 | ## stdout: 3
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| 370 |
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| 371 | #### Iteration
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| 372 | a=(1 '2 3')
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| 373 | for v in "${a[@]}"; do
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| 374 | echo $v
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| 375 | done
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| 376 | ## STDOUT:
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| 377 | 1
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| 378 | 2 3
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| 379 | ## END
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| 380 |
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| 381 | #### glob within array yields separate elements
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| 382 | touch y.Y yy.Y
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| 383 | a=(*.Y)
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| 384 | argv.py "${a[@]}"
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| 385 | ## stdout: ['y.Y', 'yy.Y']
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| 386 |
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| 387 | #### declare array and then append
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| 388 | declare -a array
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| 389 | array+=(a)
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| 390 | array+=(b c)
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| 391 | argv.py "${array[@]}"
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| 392 | ## stdout: ['a', 'b', 'c']
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| 393 |
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| 394 | #### Array syntax in wrong place
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| 395 | ls foo=(1 2)
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| 396 | ## status: 1
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| 397 | ## OK bash status: 2
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| 398 |
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| 399 | #### Single array with :-
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| 400 |
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| 401 | # 2024-06 - bash 5.2 and mksh now match, bash 4.4 differed.
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| 402 | # Could change OSH
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| 403 | # zsh agrees with OSH, but it fails most test cases
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| 404 | # 2025-01 We changed OSH.
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| 405 |
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| 406 | single=('')
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| 407 | argv.py ${single[@]:-none} x "${single[@]:-none}"
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| 408 | ## stdout: ['none', 'x', 'none']
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| 409 |
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| 410 | #### Stripping a whole array unquoted
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| 411 | # Problem: it joins it first.
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| 412 | files=('foo.c' 'sp ace.h' 'bar.c')
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| 413 | argv.py ${files[@]%.c}
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| 414 | ## status: 0
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| 415 | ## stdout: ['foo', 'sp', 'ace.h', 'bar']
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| 416 | ## N-I mksh status: 1
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| 417 | ## N-I mksh stdout-json: ""
|
| 418 |
|
| 419 | #### Stripping a whole array quoted
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| 420 | files=('foo.c' 'sp ace.h' 'bar.c')
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| 421 | argv.py "${files[@]%.c}"
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| 422 | ## status: 0
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| 423 | ## stdout: ['foo', 'sp ace.h', 'bar']
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| 424 | ## N-I mksh status: 1
|
| 425 | ## N-I mksh stdout-json: ""
|
| 426 |
|
| 427 | #### Multiple subscripts not allowed
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| 428 | # NOTE: bash 4.3 had a bug where it ignored the bad subscript, but now it is
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| 429 | # fixed.
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| 430 | a=('123' '456')
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| 431 | argv.py "${a[0]}" "${a[0][0]}"
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| 432 | ## stdout-json: ""
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| 433 | ## status: 2
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| 434 | ## OK bash/mksh status: 1
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| 435 |
|
| 436 | #### Length op, index op, then transform op is not allowed
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| 437 | a=('123' '456')
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| 438 | echo "${#a[0]}" "${#a[0]/1/xxx}"
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| 439 | ## stdout-json: ""
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| 440 | ## status: 2
|
| 441 | ## OK bash/mksh status: 1
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| 442 |
|
| 443 | #### ${mystr[@]} and ${mystr[*]} are no-ops
|
| 444 | s='abc'
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| 445 | echo ${s[@]}
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| 446 | echo ${s[*]}
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| 447 | ## STDOUT:
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| 448 | abc
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| 449 | abc
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| 450 | ## END
|
| 451 |
|
| 452 | #### ${mystr[@]} and ${mystr[*]} disallowed with strict_array
|
| 453 |
|
| 454 | $SH -c 'shopt -s strict_array; s="abc"; echo ${s[@]}'
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| 455 | echo status=$?
|
| 456 |
|
| 457 | $SH -c 'shopt -s strict_array; s="abc"; echo ${s[*]}'
|
| 458 | echo status=$?
|
| 459 |
|
| 460 | ## status: 0
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| 461 | ## STDOUT:
|
| 462 | status=1
|
| 463 | status=1
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| 464 | ## END
|
| 465 | ## N-I bash/mksh STDOUT:
|
| 466 | abc
|
| 467 | status=0
|
| 468 | abc
|
| 469 | status=0
|
| 470 | ## END
|
| 471 |
|
| 472 | #### Create a "user" array out of the argv array
|
| 473 | set -- 'a b' 'c'
|
| 474 | array1=('x y' 'z')
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| 475 | array2=("$@")
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| 476 | argv.py "${array1[@]}" "${array2[@]}"
|
| 477 | ## stdout: ['x y', 'z', 'a b', 'c']
|
| 478 |
|
| 479 | #### Tilde expansion within array
|
| 480 | HOME=/home/bob
|
| 481 | a=(~/src ~/git)
|
| 482 | echo "${a[@]}"
|
| 483 | ## stdout: /home/bob/src /home/bob/git
|
| 484 |
|
| 485 | #### Brace Expansion within Array
|
| 486 | a=(-{a,b} {c,d}-)
|
| 487 | echo "${a[@]}"
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| 488 | ## stdout: -a -b c- d-
|
| 489 |
|
| 490 | #### array default
|
| 491 | default=('1 2' '3')
|
| 492 | argv.py "${undef[@]:-${default[@]}}"
|
| 493 | ## stdout: ['1 2', '3']
|
| 494 |
|
| 495 | #### Singleton Array Copy and Assign. OSH can't index strings with ints
|
| 496 | a=( '12 3' )
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| 497 | b=( "${a[@]}" )
|
| 498 | c="${a[@]}" # This decays it to a string
|
| 499 | d=${a[*]} # This decays it to a string
|
| 500 | echo ${#a[0]} ${#b[0]}
|
| 501 | echo ${#a[@]} ${#b[@]}
|
| 502 |
|
| 503 | # osh is intentionally stricter, and these fail.
|
| 504 | echo ${#c[0]} ${#d[0]}
|
| 505 | echo ${#c[@]} ${#d[@]}
|
| 506 |
|
| 507 | ## status: 1
|
| 508 | ## STDOUT:
|
| 509 | 4 4
|
| 510 | 1 1
|
| 511 | ## END
|
| 512 | ## OK bash/mksh status: 0
|
| 513 | ## OK bash/mksh STDOUT:
|
| 514 | 4 4
|
| 515 | 1 1
|
| 516 | 4 4
|
| 517 | 1 1
|
| 518 | ## END
|
| 519 |
|
| 520 | #### declare -a / local -a is empty array
|
| 521 | declare -a myarray
|
| 522 | argv.py "${myarray[@]}"
|
| 523 | myarray+=('x')
|
| 524 | argv.py "${myarray[@]}"
|
| 525 |
|
| 526 | f() {
|
| 527 | local -a myarray
|
| 528 | argv.py "${myarray[@]}"
|
| 529 | myarray+=('x')
|
| 530 | argv.py "${myarray[@]}"
|
| 531 | }
|
| 532 | f
|
| 533 | ## STDOUT:
|
| 534 | []
|
| 535 | ['x']
|
| 536 | []
|
| 537 | ['x']
|
| 538 | ## END
|
| 539 |
|
| 540 | #### Create sparse array
|
| 541 | a=()
|
| 542 | (( a[99]=1 )) # osh doesn't parse index assignment outside arithmetic yet
|
| 543 | echo len=${#a[@]}
|
| 544 | argv.py "${a[@]}"
|
| 545 | echo "unset=${a[33]}"
|
| 546 | echo len-of-unset=${#a[33]}
|
| 547 | ## STDOUT:
|
| 548 | len=1
|
| 549 | ['1']
|
| 550 | unset=
|
| 551 | len-of-unset=0
|
| 552 | ## END
|
| 553 |
|
| 554 | #### Create sparse array implicitly
|
| 555 | (( a[99]=1 ))
|
| 556 | echo len=${#a[@]}
|
| 557 | argv.py "${a[@]}"
|
| 558 | echo "unset=${a[33]}"
|
| 559 | echo len-of-unset=${#a[33]}
|
| 560 | ## STDOUT:
|
| 561 | len=1
|
| 562 | ['1']
|
| 563 | unset=
|
| 564 | len-of-unset=0
|
| 565 | ## END
|
| 566 |
|
| 567 | #### Append sparse arrays
|
| 568 | a=()
|
| 569 | (( a[99]=1 ))
|
| 570 | b=()
|
| 571 | (( b[33]=2 ))
|
| 572 | (( b[66]=3 ))
|
| 573 | a+=( "${b[@]}" )
|
| 574 | argv.py "${a[@]}"
|
| 575 | argv.py "${a[99]}" "${a[100]}" "${a[101]}"
|
| 576 | ## STDOUT:
|
| 577 | ['1', '2', '3']
|
| 578 | ['1', '2', '3']
|
| 579 | ## END
|
| 580 |
|
| 581 | #### Slice of sparse array with [@]
|
| 582 | # mksh doesn't support this syntax! It's a bash extension.
|
| 583 | (( a[33]=1 ))
|
| 584 | (( a[66]=2 ))
|
| 585 | (( a[99]=2 ))
|
| 586 | argv.py "${a[@]:15:2}"
|
| 587 | ## stdout: ['1', '2']
|
| 588 | ## N-I mksh status: 1
|
| 589 | ## N-I mksh stdout-json: ""
|
| 590 |
|
| 591 | #### Using an array itself as the index on LHS
|
| 592 | shopt -u strict_arith
|
| 593 | a[a]=42
|
| 594 | a[a]=99
|
| 595 | argv.py "${a[@]}" "${a[0]}" "${a[42]}" "${a[99]}"
|
| 596 |
|
| 597 | ## status: 0
|
| 598 | ## STDOUT:
|
| 599 | ['42', '99', '42', '99', '']
|
| 600 | ## END
|
| 601 |
|
| 602 | #### Using an array itself as the index on RHS
|
| 603 | shopt -u strict_arith
|
| 604 | a=(1 2 3)
|
| 605 | (( x = a[a] ))
|
| 606 | echo $x
|
| 607 | ## status: 0
|
| 608 | ## STDOUT:
|
| 609 | 2
|
| 610 | ## END
|
| 611 |
|
| 612 | #### a[$x$y] on LHS and RHS
|
| 613 | x=1
|
| 614 | y=2
|
| 615 | a[$x$y]=foo
|
| 616 |
|
| 617 | # not allowed by OSH parsing
|
| 618 | #echo ${a[$x$y]}
|
| 619 |
|
| 620 | echo ${a[12]}
|
| 621 | echo ${#a[@]}
|
| 622 |
|
| 623 | ## STDOUT:
|
| 624 | foo
|
| 625 | 1
|
| 626 | ## END
|
| 627 |
|
| 628 |
|
| 629 | #### Dynamic parsing of LHS a[$code]=value
|
| 630 |
|
| 631 | declare -a array
|
| 632 | array[x=1]='one'
|
| 633 |
|
| 634 | code='y=2'
|
| 635 | #code='1+2' # doesn't work either
|
| 636 | array[$code]='two'
|
| 637 |
|
| 638 | argv.py "${array[@]}"
|
| 639 | echo x=$x
|
| 640 | echo y=$y
|
| 641 |
|
| 642 | ## STDOUT:
|
| 643 | ['one', 'two']
|
| 644 | x=1
|
| 645 | y=2
|
| 646 | ## END
|
| 647 | ## N-I dash stdout-json: ""
|
| 648 | ## N-I dash status: 2
|
| 649 |
|
| 650 | #### Dynamic parsing of RHS ${a[$code]}
|
| 651 | declare -a array
|
| 652 | array=(zero one two three)
|
| 653 |
|
| 654 | echo ${array[1+2]}
|
| 655 |
|
| 656 | code='1+2'
|
| 657 | echo ${array[$code]}
|
| 658 |
|
| 659 | ## STDOUT:
|
| 660 | three
|
| 661 | three
|
| 662 | ## END
|
| 663 |
|
| 664 | # it still dynamically parses
|
| 665 |
|
| 666 | ## OK zsh STDOUT:
|
| 667 | two
|
| 668 | two
|
| 669 | ## END
|
| 670 |
|
| 671 |
|
| 672 | #### Is element set? test -v a[i]
|
| 673 |
|
| 674 | # note: modern versions of zsh implement this
|
| 675 |
|
| 676 | array=(1 2 3 '')
|
| 677 |
|
| 678 | test -v 'array[1]'
|
| 679 | echo set=$?
|
| 680 |
|
| 681 | test -v 'array[3]'
|
| 682 | echo empty=$?
|
| 683 |
|
| 684 | test -v 'array[4]'
|
| 685 | echo unset=$?
|
| 686 |
|
| 687 | ## STDOUT:
|
| 688 | set=0
|
| 689 | empty=0
|
| 690 | unset=1
|
| 691 | ## END
|
| 692 |
|
| 693 | ## N-I mksh STDOUT:
|
| 694 | set=2
|
| 695 | empty=2
|
| 696 | unset=2
|
| 697 | ## END
|
| 698 |
|
| 699 |
|
| 700 | #### [[ -v a[i] ]]
|
| 701 |
|
| 702 | # note: modern versions of zsh implement this
|
| 703 |
|
| 704 | array=(1 2 3)
|
| 705 | [[ -v array[1] ]]
|
| 706 | echo status=$?
|
| 707 |
|
| 708 | [[ -v array[4] ]]
|
| 709 | echo status=$?
|
| 710 |
|
| 711 | ## STDOUT:
|
| 712 | status=0
|
| 713 | status=1
|
| 714 | ## END
|
| 715 |
|
| 716 | ## N-I mksh status: 1
|
| 717 | ## N-I mksh STDOUT:
|
| 718 | ## END
|
| 719 |
|
| 720 |
|
| 721 | #### test -v a[i] with arith expressions
|
| 722 |
|
| 723 | array=(1 2 3 '')
|
| 724 |
|
| 725 | test -v 'array[1+1]'
|
| 726 | echo status=$?
|
| 727 |
|
| 728 | test -v 'array[4+1]'
|
| 729 | echo status=$?
|
| 730 |
|
| 731 | echo
|
| 732 | echo dbracket
|
| 733 |
|
| 734 | [[ -v array[1+1] ]]
|
| 735 | echo status=$?
|
| 736 |
|
| 737 | [[ -v array[4+1] ]]
|
| 738 | echo status=$?
|
| 739 |
|
| 740 | ## STDOUT:
|
| 741 | status=0
|
| 742 | status=1
|
| 743 |
|
| 744 | dbracket
|
| 745 | status=0
|
| 746 | status=1
|
| 747 | ## END
|
| 748 |
|
| 749 | ## N-I mksh status: 1
|
| 750 | ## N-I mksh STDOUT:
|
| 751 | status=2
|
| 752 | status=2
|
| 753 |
|
| 754 | dbracket
|
| 755 | ## END
|
| 756 |
|
| 757 |
|
| 758 | #### More arith expressions in [[ -v array[expr]] ]]
|
| 759 |
|
| 760 | typeset -a array
|
| 761 | array=('' nonempty)
|
| 762 |
|
| 763 | # This feels inconsistent with the rest of bash?
|
| 764 | zero=0
|
| 765 |
|
| 766 | [[ -v array[zero+0] ]]
|
| 767 | echo zero=$?
|
| 768 |
|
| 769 | [[ -v array[zero+1] ]]
|
| 770 | echo one=$?
|
| 771 |
|
| 772 | [[ -v array[zero+2] ]]
|
| 773 | echo two=$?
|
| 774 |
|
| 775 | echo ---
|
| 776 |
|
| 777 | i='0+0'
|
| 778 | [[ -v array[i] ]]
|
| 779 | echo zero=$?
|
| 780 |
|
| 781 | i='0+1'
|
| 782 | [[ -v array[i] ]]
|
| 783 | echo one=$?
|
| 784 |
|
| 785 | i='0+2'
|
| 786 | [[ -v array[i] ]]
|
| 787 | echo two=$?
|
| 788 |
|
| 789 | echo ---
|
| 790 |
|
| 791 | i='0+0'
|
| 792 | [[ -v array[$i] ]]
|
| 793 | echo zero=$?
|
| 794 |
|
| 795 | i='0+1'
|
| 796 | [[ -v array[$i] ]]
|
| 797 | echo one=$?
|
| 798 |
|
| 799 | i='0+2'
|
| 800 | [[ -v array[$i] ]]
|
| 801 | echo two=$?
|
| 802 |
|
| 803 |
|
| 804 | ## STDOUT:
|
| 805 | zero=0
|
| 806 | one=0
|
| 807 | two=1
|
| 808 | ---
|
| 809 | zero=0
|
| 810 | one=0
|
| 811 | two=1
|
| 812 | ---
|
| 813 | zero=0
|
| 814 | one=0
|
| 815 | two=1
|
| 816 | ## END
|
| 817 |
|
| 818 | ## N-I mksh status: 1
|
| 819 | ## N-I mksh STDOUT:
|
| 820 | ## END
|
| 821 |
|
| 822 |
|
| 823 | #### Regression: Assigning with out-of-range negative index
|
| 824 | a=()
|
| 825 | a[-1]=1
|
| 826 |
|
| 827 | ## status: 1
|
| 828 | ## STDOUT:
|
| 829 | ## END
|
| 830 | ## STDERR:
|
| 831 | a[-1]=1
|
| 832 | ^~
|
| 833 | [ stdin ]:2: fatal: Index -1 is out of bounds for array of length 0
|
| 834 | ## END
|
| 835 |
|
| 836 | ## OK bash STDERR:
|
| 837 | bash: line 2: a[-1]: bad array subscript
|
| 838 | ## END
|
| 839 |
|
| 840 | # Note: mksh interprets -1 as 0xFFFFFFFF
|
| 841 | ## N-I mksh status: 0
|
| 842 | ## N-I mksh STDERR:
|
| 843 | ## END
|
| 844 |
|
| 845 |
|
| 846 | #### Regression: Negative index in [[ -v a[index] ]]
|
| 847 | a[0]=x
|
| 848 | a[5]=y
|
| 849 | a[10]=z
|
| 850 | [[ -v a[-1] ]] && echo 'a has -1'
|
| 851 | [[ -v a[-2] ]] && echo 'a has -2'
|
| 852 | [[ -v a[-5] ]] && echo 'a has -5'
|
| 853 | [[ -v a[-6] ]] && echo 'a has -6'
|
| 854 | [[ -v a[-10] ]] && echo 'a has -10'
|
| 855 | [[ -v a[-11] ]] && echo 'a has -11'
|
| 856 |
|
| 857 | ## STDOUT:
|
| 858 | a has -1
|
| 859 | a has -6
|
| 860 | a has -11
|
| 861 | ## END
|
| 862 |
|
| 863 | ## N-I mksh status: 1
|
| 864 | ## N-I mksh STDOUT:
|
| 865 | ## END
|
| 866 |
|
| 867 |
|
| 868 | #### Regression: Negative out-of-range index in [[ -v a[index] ]]
|
| 869 | e=()
|
| 870 | [[ -v e[-1] ]] && echo 'e has -1'
|
| 871 |
|
| 872 | ## status: 1
|
| 873 | ## STDERR:
|
| 874 | [[ -v e[-1] ]] && echo 'e has -1'
|
| 875 | ^
|
| 876 | [ stdin ]:2: fatal: -v got index -1, which is out of bounds for array of length 0
|
| 877 | ## END
|
| 878 |
|
| 879 | ## OK bash STDERR:
|
| 880 | bash: line 2: e: bad array subscript
|
| 881 | ## END
|
| 882 |
|
| 883 | ## N-I mksh STDERR:
|
| 884 | mksh: <stdin>[2]: syntax error: 'e[-1]' unexpected operator/operand
|
| 885 | ## END
|
| 886 |
|
| 887 |
|
| 888 | #### a+=() modifies existing instance of BashArray
|
| 889 | case $SH in mksh|bash) exit ;; esac
|
| 890 |
|
| 891 | a=(1 2 3)
|
| 892 | var b = a
|
| 893 | a+=(4 5)
|
| 894 | echo "a=(${a[*]})"
|
| 895 | echo "b=(${b[*]})"
|
| 896 |
|
| 897 | ## STDOUT:
|
| 898 | a=(1 2 3 4 5)
|
| 899 | b=(1 2 3 4 5)
|
| 900 | ## END
|
| 901 |
|
| 902 | ## N-I mksh/bash STDOUT:
|
| 903 | ## END
|
| 904 |
|
| 905 |
|
| 906 | #### Regression: unset a[-2]: out-of-bound negative index should cause error
|
| 907 | case $SH in mksh) exit ;; esac
|
| 908 |
|
| 909 | a=(1)
|
| 910 | unset -v 'a[-2]'
|
| 911 |
|
| 912 | ## status: 1
|
| 913 | ## STDOUT:
|
| 914 | ## END
|
| 915 | ## STDERR:
|
| 916 | unset -v 'a[-2]'
|
| 917 | ^
|
| 918 | [ stdin ]:4: a[-2]: Index is out of bounds for array of length 1
|
| 919 | ## END
|
| 920 |
|
| 921 | ## OK bash STDERR:
|
| 922 | bash: line 4: unset: [-2]: bad array subscript
|
| 923 | ## END
|
| 924 |
|
| 925 | ## N-I mksh status: 0
|
| 926 | ## N-I mksh STDERR:
|
| 927 | ## END
|
| 928 |
|
| 929 |
|
| 930 | #### Regression: Out-of-bound negative offset for ${a[@]:offset}
|
| 931 | case $SH in mksh) exit ;; esac
|
| 932 |
|
| 933 | a=(1 2 3 4)
|
| 934 | echo "a=(${a[*]})"
|
| 935 | echo "begin=-1 -> (${a[*]: -1})"
|
| 936 | echo "begin=-2 -> (${a[*]: -2})"
|
| 937 | echo "begin=-3 -> (${a[*]: -3})"
|
| 938 | echo "begin=-4 -> (${a[*]: -4})"
|
| 939 | echo "begin=-5 -> (${a[*]: -5})"
|
| 940 |
|
| 941 | ## STDOUT:
|
| 942 | a=(1 2 3 4)
|
| 943 | begin=-1 -> (4)
|
| 944 | begin=-2 -> (3 4)
|
| 945 | begin=-3 -> (2 3 4)
|
| 946 | begin=-4 -> (1 2 3 4)
|
| 947 | begin=-5 -> ()
|
| 948 | ## END
|
| 949 |
|
| 950 | ## N-I mksh STDOUT:
|
| 951 | ## END
|
| 952 |
|
| 953 |
|
| 954 | #### Regression: Array length after unset
|
| 955 | case $SH in mksh) exit ;; esac
|
| 956 |
|
| 957 | a=(x)
|
| 958 | a[9]=y
|
| 959 | echo "len ${#a[@]};"
|
| 960 |
|
| 961 | unset -v 'a[-1]'
|
| 962 | echo "len ${#a[@]};"
|
| 963 | echo "last ${a[@]: -1};"
|
| 964 |
|
| 965 | ## STDOUT:
|
| 966 | len 2;
|
| 967 | len 1;
|
| 968 | last x;
|
| 969 | ## END
|
| 970 |
|
| 971 | ## N-I mksh STDOUT:
|
| 972 | ## END
|
| 973 |
|
| 974 |
|
| 975 | #### Regression: ${a[@]@Q} crash with `a[0]=x a[2]=y`
|
| 976 | case $SH in mksh) exit ;; esac
|
| 977 |
|
| 978 | a[0]=x
|
| 979 | a[2]=y
|
| 980 | echo "quoted = (${a[@]@Q})"
|
| 981 |
|
| 982 | ## STDOUT:
|
| 983 | quoted = (x y)
|
| 984 | ## END
|
| 985 |
|
| 986 | ## OK bash STDOUT:
|
| 987 | quoted = ('x' 'y')
|
| 988 | ## END
|
| 989 |
|
| 990 | ## N-I mksh STDOUT:
|
| 991 | ## END
|
| 992 |
|
| 993 |
|
| 994 | #### Regression: silent out-of-bound negative index in ${a[-2]} and $((a[-2]))
|
| 995 | case $SH in mksh) exit ;; esac
|
| 996 |
|
| 997 | a=(x)
|
| 998 | echo "[${a[-2]}]"
|
| 999 | echo $?
|
| 1000 | echo "[$((a[-2]))]"
|
| 1001 | echo $?
|
| 1002 |
|
| 1003 | ## STDOUT:
|
| 1004 | []
|
| 1005 | 0
|
| 1006 | [0]
|
| 1007 | 0
|
| 1008 | ## END
|
| 1009 | ## STDERR:
|
| 1010 | echo "[${a[-2]}]"
|
| 1011 | ^
|
| 1012 | [ stdin ]:4: Index -2 out of bounds for array of length 1
|
| 1013 | echo "[$((a[-2]))]"
|
| 1014 | ^
|
| 1015 | [ stdin ]:6: Index -2 out of bounds for array of length 1
|
| 1016 | ## END
|
| 1017 |
|
| 1018 | ## OK bash STDERR:
|
| 1019 | bash: line 4: a: bad array subscript
|
| 1020 | bash: line 6: a: bad array subscript
|
| 1021 | ## END
|
| 1022 |
|
| 1023 | ## N-I mksh status: 0
|
| 1024 | ## N-I mksh STDOUT:
|
| 1025 | ## END
|
| 1026 | ## N-I mksh STDERR:
|
| 1027 | ## END
|