| 1 | # Test combination of var ops.
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| 2 | #
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| 3 | # NOTE: There are also slice tests in {array,arith-context}.test.sh.
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| 4 |
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| 5 | ## compare_shells: bash mksh zsh
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| 6 |
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| 7 | #### String slice
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| 8 | foo=abcdefg
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| 9 | echo ${foo:1:3}
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| 10 | ## STDOUT:
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| 11 | bcd
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| 12 | ## END
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| 13 |
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| 14 | #### Cannot take length of substring slice
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| 15 | # These are runtime errors, but we could make them parse time errors.
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| 16 | v=abcde
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| 17 | echo ${#v:1:3}
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| 18 | ## status: 1
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| 19 | ## OK osh status: 2
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| 20 | # zsh actually implements this!
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| 21 | ## OK zsh stdout: 3
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| 22 | ## OK zsh status: 0
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| 23 |
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| 24 | #### Out of range string slice: begin
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| 25 | # out of range begin doesn't raise error in bash, but in mksh it skips the
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| 26 | # whole thing!
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| 27 | foo=abcdefg
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| 28 | echo _${foo:100:3}
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| 29 | echo $?
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| 30 | ## STDOUT:
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| 31 | _
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| 32 | 0
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| 33 | ## END
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| 34 | ## BUG mksh STDOUT:
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| 35 |
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| 36 | 0
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| 37 | ## END
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| 38 |
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| 39 | #### Out of range string slice: length
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| 40 | # OK in both bash and mksh
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| 41 | foo=abcdefg
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| 42 | echo _${foo:3:100}
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| 43 | echo $?
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| 44 | ## STDOUT:
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| 45 | _defg
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| 46 | 0
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| 47 | ## END
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| 48 | ## BUG mksh STDOUT:
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| 49 | _defg
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| 50 | 0
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| 51 | ## END
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| 52 |
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| 53 | #### Negative start index
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| 54 | foo=abcdefg
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| 55 | echo ${foo: -4:3}
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| 56 | ## stdout: def
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| 57 |
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| 58 | #### Negative start index respects unicode
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| 59 | foo=abcd-μ-
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| 60 | echo ${foo: -4:3}
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| 61 | ## stdout: d-μ
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| 62 | ## BUG mksh stdout: -μ
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| 63 |
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| 64 | #### Negative second arg is position, not length!
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| 65 | foo=abcdefg
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| 66 | echo ${foo:3:-1} ${foo: 3: -2} ${foo:3 :-3 }
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| 67 | ## stdout: def de d
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| 68 | ## BUG mksh stdout: defg defg defg
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| 69 |
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| 70 | #### Negative start index respects unicode
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| 71 | foo=abcd-μ-
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| 72 | echo ${foo: -5: -3}
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| 73 | ## stdout: cd
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| 74 | ## BUG mksh stdout: d-μ-
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| 75 |
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| 76 | #### String slice with math
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| 77 | # I think this is the $(()) language inside?
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| 78 | i=1
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| 79 | foo=abcdefg
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| 80 | echo ${foo: i+4-2 : i + 2}
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| 81 | ## stdout: def
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| 82 |
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| 83 | #### Slice undefined
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| 84 | echo -${undef:1:2}-
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| 85 | set -o nounset
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| 86 | echo -${undef:1:2}-
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| 87 | echo -done-
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| 88 | ## STDOUT:
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| 89 | --
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| 90 | ## END
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| 91 | ## status: 1
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| 92 | # mksh doesn't respect nounset!
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| 93 | ## BUG mksh status: 0
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| 94 | ## BUG mksh STDOUT:
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| 95 | --
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| 96 | --
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| 97 | -done-
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| 98 | ## END
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| 99 |
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| 100 | #### Slice UTF-8 String
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| 101 | # mksh slices by bytes.
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| 102 | foo='--μ--'
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| 103 | echo ${foo:1:3}
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| 104 | ## stdout: -μ-
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| 105 | ## BUG mksh stdout: -μ
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| 106 |
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| 107 | #### Slice string with invalid UTF-8 results in empty string and warning
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| 108 | s=$(echo -e "\xFF")bcdef
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| 109 | echo -${s:1:3}-
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| 110 | ## status: 0
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| 111 | ## STDOUT:
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| 112 | --
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| 113 | ## END
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| 114 | ## STDERR:
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| 115 | [??? no location ???] warning: UTF-8 decode: Bad encoding at offset 0 in string of 6 bytes
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| 116 | ## END
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| 117 | ## BUG bash/mksh/zsh status: 0
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| 118 | ## BUG bash/mksh/zsh STDOUT:
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| 119 | -bcd-
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| 120 | ## END
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| 121 | ## BUG bash/mksh/zsh stderr-json: ""
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| 122 |
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| 123 |
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| 124 | #### Slice string with invalid UTF-8 with strict_word_eval
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| 125 | shopt -s strict_word_eval || true
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| 126 | echo slice
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| 127 | s=$(echo -e "\xFF")bcdef
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| 128 | echo -${s:1:3}-
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| 129 | ## status: 1
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| 130 | ## STDOUT:
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| 131 | slice
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| 132 | ## END
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| 133 | ## N-I bash/mksh/zsh status: 0
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| 134 | ## N-I bash/mksh/zsh STDOUT:
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| 135 | slice
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| 136 | -bcd-
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| 137 | ## END
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| 138 |
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| 139 | #### Slice with an index that's an array -- silent a[0] decay
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| 140 | i=(3 4 5)
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| 141 | mystr=abcdefg
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| 142 | echo assigned
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| 143 | echo ${mystr:$i:2}
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| 144 |
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| 145 | ## status: 0
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| 146 | ## STDOUT:
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| 147 | assigned
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| 148 | de
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| 149 | ## END
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| 150 | ## OK zsh status: 1
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| 151 | ## OK zsh STDOUT:
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| 152 | assigned
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| 153 | ## END
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| 154 |
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| 155 | #### Slice with an assoc array
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| 156 | declare -A A=(['5']=3 ['6']=4)
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| 157 | mystr=abcdefg
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| 158 | echo assigned
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| 159 | echo ${mystr:$A:2}
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| 160 |
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| 161 | ## status: 0
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| 162 | ## STDOUT:
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| 163 | assigned
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| 164 | ab
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| 165 | ## END
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| 166 |
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| 167 | ## N-I mksh status: 1
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| 168 | ## N-I mksh stdout-json: ""
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| 169 |
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| 170 | #### Simple ${@:offset}
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| 171 |
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| 172 | set -- 4 5 6
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| 173 |
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| 174 | result=$(argv.py ${@:0})
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| 175 | echo ${result//"$0"/'SHELL'}
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| 176 |
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| 177 | argv.py ${@:1}
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| 178 | argv.py ${@:2}
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| 179 |
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| 180 | ## STDOUT:
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| 181 | ['SHELL', '4', '5', '6']
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| 182 | ['4', '5', '6']
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| 183 | ['5', '6']
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| 184 | ## END
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| 185 | ## N-I mksh status: 1
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| 186 | ## N-I mksh STDOUT:
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| 187 |
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| 188 | ## END
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| 189 |
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| 190 |
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| 191 | #### ${@:offset} and ${*:offset}
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| 192 | case $SH in (zsh) return ;; esac # zsh is very different
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| 193 |
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| 194 | argv.shell-name-checked () {
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| 195 | argv.py "${@//$0/SHELL}"
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| 196 | }
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| 197 | fun() {
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| 198 | argv.shell-name-checked -${*:0}- # include $0
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| 199 | argv.shell-name-checked -${*:1}- # from $1
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| 200 | argv.shell-name-checked -${*:3}- # last parameter $3
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| 201 | argv.shell-name-checked -${*:4}- # empty
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| 202 | argv.shell-name-checked -${*:5}- # out of boundary
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| 203 | argv.shell-name-checked -${@:0}-
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| 204 | argv.shell-name-checked -${@:1}-
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| 205 | argv.shell-name-checked -${@:3}-
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| 206 | argv.shell-name-checked -${@:4}-
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| 207 | argv.shell-name-checked -${@:5}-
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| 208 | argv.shell-name-checked "-${*:0}-"
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| 209 | argv.shell-name-checked "-${*:1}-"
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| 210 | argv.shell-name-checked "-${*:3}-"
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| 211 | argv.shell-name-checked "-${*:4}-"
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| 212 | argv.shell-name-checked "-${*:5}-"
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| 213 | argv.shell-name-checked "-${@:0}-"
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| 214 | argv.shell-name-checked "-${@:1}-"
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| 215 | argv.shell-name-checked "-${@:3}-"
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| 216 | argv.shell-name-checked "-${@:4}-"
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| 217 | argv.shell-name-checked "-${@:5}-"
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| 218 | }
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| 219 | fun "a 1" "b 2" "c 3"
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| 220 | ## STDOUT:
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| 221 | ['-SHELL', 'a', '1', 'b', '2', 'c', '3-']
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| 222 | ['-a', '1', 'b', '2', 'c', '3-']
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| 223 | ['-c', '3-']
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| 224 | ['--']
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| 225 | ['--']
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| 226 | ['-SHELL', 'a', '1', 'b', '2', 'c', '3-']
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| 227 | ['-a', '1', 'b', '2', 'c', '3-']
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| 228 | ['-c', '3-']
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| 229 | ['--']
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| 230 | ['--']
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| 231 | ['-SHELL a 1 b 2 c 3-']
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| 232 | ['-a 1 b 2 c 3-']
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| 233 | ['-c 3-']
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| 234 | ['--']
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| 235 | ['--']
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| 236 | ['-SHELL', 'a 1', 'b 2', 'c 3-']
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| 237 | ['-a 1', 'b 2', 'c 3-']
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| 238 | ['-c 3-']
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| 239 | ['--']
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| 240 | ['--']
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| 241 | ## END
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| 242 | ## N-I mksh status: 1
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| 243 | ## N-I mksh stdout-json: ""
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| 244 | ## BUG zsh stdout-json: ""
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| 245 |
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| 246 | #### ${@:offset:length} and ${*:offset:length}
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| 247 | case $SH in (zsh) return ;; esac # zsh is very different
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| 248 |
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| 249 | argv.shell-name-checked () {
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| 250 | argv.py "${@//$0/SHELL}"
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| 251 | }
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| 252 | fun() {
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| 253 | argv.shell-name-checked -${*:0:2}- # include $0
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| 254 | argv.shell-name-checked -${*:1:2}- # from $1
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| 255 | argv.shell-name-checked -${*:3:2}- # last parameter $3
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| 256 | argv.shell-name-checked -${*:4:2}- # empty
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| 257 | argv.shell-name-checked -${*:5:2}- # out of boundary
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| 258 | argv.shell-name-checked -${@:0:2}-
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| 259 | argv.shell-name-checked -${@:1:2}-
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| 260 | argv.shell-name-checked -${@:3:2}-
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| 261 | argv.shell-name-checked -${@:4:2}-
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| 262 | argv.shell-name-checked -${@:5:2}-
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| 263 | argv.shell-name-checked "-${*:0:2}-"
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| 264 | argv.shell-name-checked "-${*:1:2}-"
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| 265 | argv.shell-name-checked "-${*:3:2}-"
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| 266 | argv.shell-name-checked "-${*:4:2}-"
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| 267 | argv.shell-name-checked "-${*:5:2}-"
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| 268 | argv.shell-name-checked "-${@:0:2}-"
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| 269 | argv.shell-name-checked "-${@:1:2}-"
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| 270 | argv.shell-name-checked "-${@:3:2}-"
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| 271 | argv.shell-name-checked "-${@:4:2}-"
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| 272 | argv.shell-name-checked "-${@:5:2}-"
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| 273 | }
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| 274 | fun "a 1" "b 2" "c 3"
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| 275 | ## STDOUT:
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| 276 | ['-SHELL', 'a', '1-']
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| 277 | ['-a', '1', 'b', '2-']
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| 278 | ['-c', '3-']
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| 279 | ['--']
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| 280 | ['--']
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| 281 | ['-SHELL', 'a', '1-']
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| 282 | ['-a', '1', 'b', '2-']
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| 283 | ['-c', '3-']
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| 284 | ['--']
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| 285 | ['--']
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| 286 | ['-SHELL a 1-']
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| 287 | ['-a 1 b 2-']
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| 288 | ['-c 3-']
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| 289 | ['--']
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| 290 | ['--']
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| 291 | ['-SHELL', 'a 1-']
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| 292 | ['-a 1', 'b 2-']
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| 293 | ['-c 3-']
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| 294 | ['--']
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| 295 | ['--']
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| 296 | ## END
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| 297 | ## N-I mksh status: 1
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| 298 | ## N-I mksh stdout-json: ""
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| 299 | ## BUG zsh stdout-json: ""
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| 300 |
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| 301 | #### ${@:0:1}
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| 302 | set a b c
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| 303 | result=$(echo ${@:0:1})
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| 304 | echo ${result//"$0"/'SHELL'}
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| 305 | ## STDOUT:
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| 306 | SHELL
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| 307 | ## END
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| 308 | ## N-I mksh STDOUT:
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| 309 |
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| 310 | ## END
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| 311 |
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| 312 | #### Permutations of implicit begin and length
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| 313 | array=(1 2 3)
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| 314 |
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| 315 | argv.py ${array[@]}
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| 316 |
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| 317 | # *** implicit length of N **
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| 318 | argv.py ${array[@]:0}
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| 319 |
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| 320 | # Why is this one not allowed
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| 321 | #argv.py ${array[@]:}
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| 322 |
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| 323 | # ** implicit length of ZERO **
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| 324 | #argv.py ${array[@]::}
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| 325 | #argv.py ${array[@]:0:}
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| 326 |
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| 327 | argv.py ${array[@]:0:0}
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| 328 | echo
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| 329 |
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| 330 | # Same agreed upon permutations
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| 331 | set -- 1 2 3
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| 332 | argv.py ${@}
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| 333 | argv.py ${@:1}
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| 334 | argv.py ${@:1:0}
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| 335 | echo
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| 336 |
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| 337 | s='123'
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| 338 | argv.py "${s}"
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| 339 | argv.py "${s:0}"
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| 340 | argv.py "${s:0:0}"
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| 341 |
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| 342 | ## STDOUT:
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| 343 | ['1', '2', '3']
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| 344 | ['1', '2', '3']
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| 345 | []
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| 346 |
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| 347 | ['1', '2', '3']
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| 348 | ['1', '2', '3']
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| 349 | []
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| 350 |
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| 351 | ['123']
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| 352 | ['123']
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| 353 | ['']
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| 354 | ## END
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| 355 |
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| 356 | ## BUG mksh status: 1
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| 357 | ## BUG mksh STDOUT:
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| 358 | ['1', '2', '3']
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| 359 | ## END
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| 360 |
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| 361 | #### ${array[@]:} vs ${array[@]: } - bash and zsh inconsistent
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| 362 |
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| 363 | $SH -c 'array=(1 2 3); argv.py ${array[@]:}'
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| 364 | $SH -c 'array=(1 2 3); argv.py space ${array[@]: }'
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| 365 |
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| 366 | $SH -c 's=123; argv.py ${s:}'
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| 367 | $SH -c 's=123; argv.py space ${s: }'
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| 368 |
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| 369 | ## STDOUT:
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| 370 | ['space', '1', '2', '3']
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| 371 | ['space', '123']
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| 372 | ## END
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| 373 |
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| 374 | ## OK osh STDOUT:
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| 375 | ['1', '2', '3']
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| 376 | ['space', '1', '2', '3']
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| 377 | ['123']
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| 378 | ['space', '123']
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| 379 | ## END
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| 380 |
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| 381 | ## BUG mksh STDOUT:
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| 382 | ['space', '123']
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| 383 | ## END
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| 384 |
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| 385 | #### ${array[@]::} has implicit length of zero - for ble.sh
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| 386 |
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| 387 | # https://oilshell.zulipchat.com/#narrow/stream/121540-oil-discuss/topic/.24.7Barr.5B.40.5D.3A.3A.7D.20in.20bash.20-.20is.20it.20documented.3F
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| 388 |
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| 389 | array=(1 2 3)
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| 390 | argv.py ${array[@]::}
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| 391 | argv.py ${array[@]:0:}
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| 392 |
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| 393 | echo
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| 394 |
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| 395 | set -- 1 2 3
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| 396 | argv.py ${@::}
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| 397 | argv.py ${@:0:}
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| 398 |
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| 399 | ## status: 0
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| 400 | ## STDOUT:
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| 401 | []
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| 402 | []
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| 403 |
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| 404 | []
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| 405 | []
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| 406 | ## END
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| 407 |
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| 408 | ## OK mksh/zsh status: 1
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| 409 | ## OK mksh/zsh STDOUT:
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| 410 | ## END
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