| 1 | ## compare_shells: bash
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| 2 |
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| 3 | # Var refs are done with ${!a}
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| 4 | #
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| 5 | # local/declare -n is tested in spec/named-ref.test.sh.
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| 6 | #
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| 7 | # http://stackoverflow.com/questions/16461656/bash-how-to-pass-array-as-an-argument-to-a-function
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| 8 |
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| 9 | #### var ref ${!a}
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| 10 | a=b
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| 11 | b=c
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| 12 | echo ref ${!a} ${a}
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| 13 | ## stdout: ref c b
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| 14 |
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| 15 | #### ${!ref-default}
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| 16 | ref=x
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| 17 | echo x=${!ref-default}
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| 18 |
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| 19 | x=''
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| 20 | echo x=${!ref-default}
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| 21 |
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| 22 | x=foo
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| 23 | echo x=${!ref-default}
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| 24 |
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| 25 | ## STDOUT:
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| 26 | x=default
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| 27 | x=
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| 28 | x=foo
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| 29 | ## END
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| 30 |
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| 31 | #### ${!undef:-}
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| 32 | # bash 4.4 gives empty string, but I feel like this could be an error
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| 33 | echo undef=${!undef-'default'}
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| 34 | echo undef=${!undef}
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| 35 |
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| 36 | set -u
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| 37 | echo NOUNSET
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| 38 | echo undef=${!undef-'default'}
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| 39 | echo undef=${!undef}
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| 40 |
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| 41 | ## status: 1
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| 42 | ## STDOUT:
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| 43 | NOUNSET
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| 44 | ## END
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| 45 |
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| 46 | # Bash 4.4 had been generating an empty string, but it was fixed in Bash 5.0.
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| 47 | #
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| 48 | # ## BUG bash STDOUT:
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| 49 | # undef=default
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| 50 | # undef=
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| 51 | # NOUNSET
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| 52 | # undef=default
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| 53 | # ## END
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| 54 |
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| 55 | #### comparison to ${!array[@]} keys (similar SYNTAX)
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| 56 |
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| 57 | declare -a a=(x y)
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| 58 | argv.py "${!a[@]}"
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| 59 | echo a_keys=$?
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| 60 |
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| 61 | argv.py "${!a}" # missing [] is equivalent to ${!a[0]} ?
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| 62 | echo a_nobrackets=$?
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| 63 |
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| 64 | echo ---
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| 65 | declare -A A=([A]=a [B]=b)
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| 66 |
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| 67 | argv.py $(printf '%s\n' ${!A[@]} | sort)
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| 68 | echo A_keys=$?
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| 69 |
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| 70 | (argv.py "${!A}") # missing [] is equivalent to ${!A[0]} ?
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| 71 | echo A_nobrackets=$?
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| 72 |
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| 73 | ## STDOUT:
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| 74 | ['0', '1']
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| 75 | a_keys=0
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| 76 | ['']
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| 77 | a_nobrackets=0
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| 78 | ---
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| 79 | ['A', 'B']
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| 80 | A_keys=0
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| 81 | A_nobrackets=1
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| 82 | ## END
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| 83 |
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| 84 | ## BUG bash STDOUT:
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| 85 | ['0', '1']
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| 86 | a_keys=0
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| 87 | ['']
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| 88 | a_nobrackets=0
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| 89 | ---
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| 90 | ['A', 'B']
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| 91 | A_keys=0
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| 92 | ['']
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| 93 | A_nobrackets=0
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| 94 | ## END
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| 95 |
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| 96 | #### ${!a[@]-'default'} is legal but fails with more than one element
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| 97 |
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| 98 | # bash allows this construct, but the indirection fails when the array has more
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| 99 | # than one element because the variable name contains a space. OSH originally
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| 100 | # made it an error unconditionally because [@] implies it's an array, so the
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| 101 | # behavior has been different from Bash when the array has a single element.
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| 102 | # We now changed it to follow Bash even when the array has a single element.
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| 103 |
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| 104 | (argv.py "${!a[@]-default}")
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| 105 | echo status=$?
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| 106 |
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| 107 | a=(x y z)
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| 108 | (argv.py "${!a[@]-default}")
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| 109 | echo status=$?
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| 110 | ## status: 0
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| 111 | ## STDOUT:
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| 112 | status=1
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| 113 | status=1
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| 114 | ## END
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| 115 |
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| 116 | # Bash 4.4 had been generating an empty string for ${!undef[@]-}, but this was
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| 117 | # fixed in Bash 5.0.
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| 118 | #
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| 119 | # ## BUG bash status: 0
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| 120 | # ## BUG bash STDOUT:
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| 121 | # ['default']
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| 122 | # status=0
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| 123 | # status=1
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| 124 | # ## END
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| 125 |
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| 126 |
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| 127 | #### var ref to $@ with @
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| 128 | set -- one two
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| 129 | ref='@'
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| 130 | echo ref=${!ref}
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| 131 | ## STDOUT:
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| 132 | ref=one two
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| 133 | ## END
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| 134 |
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| 135 | #### var ref to $1 and $2 with 1 and 2
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| 136 | set -- one two
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| 137 | ref1='1'
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| 138 | echo ref1=${!ref1}
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| 139 | ref2='2'
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| 140 | echo ref2=${!ref2}
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| 141 |
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| 142 | ## STDOUT:
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| 143 | ref1=one
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| 144 | ref2=two
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| 145 | ## END
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| 146 |
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| 147 | #### var ref: 1, @, *
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| 148 | set -- x y
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| 149 | ref=1; argv.py "${!ref}"
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| 150 | ref=@; argv.py "${!ref}"
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| 151 | ref=*; argv.py "${!ref}" # maybe_decay_array bug?
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| 152 |
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| 153 | ## STDOUT:
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| 154 | ['x']
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| 155 | ['x', 'y']
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| 156 | ['x y']
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| 157 | ## END
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| 158 |
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| 159 | #### var ref to special var BASH_SOURCE
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| 160 | ref='LINENO'
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| 161 | echo lineno=${!ref}
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| 162 | ## STDOUT:
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| 163 | lineno=2
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| 164 | ## END
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| 165 |
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| 166 | #### var ref to $? with '?'
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| 167 | myfunc() {
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| 168 | local ref=$1
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| 169 | echo ${!ref}
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| 170 | }
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| 171 | myfunc FUNCNAME
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| 172 | myfunc '?'
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| 173 | ## STDOUT:
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| 174 | myfunc
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| 175 | 0
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| 176 | ## END
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| 177 |
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| 178 |
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| 179 | #### Var ref, then assignment with ${ := }
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| 180 | z=zz
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| 181 | zz=
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| 182 | echo ${!z:=foo}
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| 183 | echo ${!z:=bar}
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| 184 | ## STDOUT:
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| 185 | foo
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| 186 | foo
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| 187 | ## END
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| 188 |
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| 189 | #### Var ref, then error with ${ ? }
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| 190 | w=ww
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| 191 | ww=
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| 192 | echo ${!w:?'my message'}
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| 193 | echo done
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| 194 | ## status: 1
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| 195 | ## STDOUT:
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| 196 | ## END
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| 197 |
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| 198 | #### Indirect expansion, THEN suffix operators
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| 199 |
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| 200 | check_eq() {
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| 201 | [ "$1" = "$2" ] || { echo "$1 vs $2"; }
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| 202 | }
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| 203 | check_expand() {
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| 204 | val=$(eval "echo \"$1\"")
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| 205 | [ "$val" = "$2" ] || { echo "$1 -> expected $2, got $val"; }
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| 206 | }
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| 207 | check_err() {
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| 208 | e="$1"
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| 209 | msg=$(eval "$e" 2>&1) && echo "bad success: $e"
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| 210 | if test -n "$2"; then
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| 211 | if [[ "$msg" != $2 ]]; then
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| 212 | echo "Expected error: $e"
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| 213 | echo "Got error : $msg"
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| 214 | fi
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| 215 | fi
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| 216 | }
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| 217 | # Nearly everything in manual section 3.5.3 "Shell Parameter Expansion"
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| 218 | # is allowed after a !-indirection.
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| 219 | #
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| 220 | # Not allowed: any further prefix syntax.
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| 221 | x=xx; xx=aaabcc
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| 222 | xd=x
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| 223 | check_err '${!!xd}'
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| 224 | check_err '${!!x*}'
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| 225 | a=(asdf x)
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| 226 | check_err '${!!a[*]}'
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| 227 | check_err '${!#x}'
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| 228 | check_err '${!#a[@]}'
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| 229 | # And an array reference binds tighter in the syntax, so goes first;
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| 230 | # there's no way to spell "indirection, then array reference".
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| 231 | check_expand '${!a[1]}' xx
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| 232 | b=(aoeu a)
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| 233 | check_expand '${!b[1]}' asdf # i.e. like !(b[1]), not (!b)[1]
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| 234 | #
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| 235 | # Allowed: apparently everything else.
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| 236 | y=yy; yy=
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| 237 | check_expand '${!y:-foo}' foo
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| 238 | check_expand '${!x:-foo}' aaabcc
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| 239 |
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| 240 | check_expand '${!x:?oops}' aaabcc
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| 241 |
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| 242 | check_expand '${!y:+foo}' ''
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| 243 | check_expand '${!x:+foo}' foo
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| 244 |
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| 245 | check_expand '${!x:2}' abcc
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| 246 | check_expand '${!x:2:2}' ab
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| 247 |
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| 248 | check_expand '${!x#*a}' aabcc
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| 249 | check_expand '${!x%%c*}' aaab
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| 250 | check_expand '${!x/a*b/d}' dcc
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| 251 |
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| 252 | # ^ operator not fully implemented in OSH
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| 253 | #check_expand '${!x^a}' Aaabcc
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| 254 |
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| 255 | p=pp; pp='\$ '
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| 256 | check_expand '${!p@P}' '$ '
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| 257 | echo ok
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| 258 | ## stdout: ok
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| 259 |
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| 260 | #### var ref OF array var -- silent a[0] decay
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| 261 | declare -a a=(ale bean)
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| 262 | echo first=${!a}
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| 263 |
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| 264 | ale=zzz
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| 265 | echo first=${!a}
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| 266 |
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| 267 | ## status: 0
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| 268 | ## STDOUT:
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| 269 | first=
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| 270 | first=zzz
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| 271 | ## END
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| 272 |
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| 273 | #### array ref
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| 274 |
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| 275 | declare -a array=(ale bean)
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| 276 | ref='array[0]'
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| 277 | echo ${!ref}
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| 278 | ## status: 0
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| 279 | ## STDOUT:
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| 280 | ale
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| 281 | ## END
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| 282 |
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| 283 | #### array ref with strict_array
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| 284 | shopt -s strict_array
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| 285 |
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| 286 | declare -a array=(ale bean)
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| 287 | ref='array'
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| 288 | echo ${!ref}
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| 289 | ## status: 1
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| 290 | ## stdout-json: ""
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| 291 | ## N-I bash status: 0
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| 292 | ## N-I bash STDOUT:
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| 293 | ale
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| 294 | ## END
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| 295 |
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| 296 | #### var ref TO array var
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| 297 | shopt -s compat_array
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| 298 |
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| 299 | declare -a array=(ale bean)
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| 300 |
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| 301 | ref='array' # when compat_array is on, this is like array[0]
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| 302 | ref_AT='array[@]'
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| 303 |
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| 304 | echo ${!ref}
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| 305 | echo ${!ref_AT}
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| 306 |
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| 307 | ## STDOUT:
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| 308 | ale
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| 309 | ale bean
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| 310 | ## END
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| 311 |
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| 312 | #### var ref TO array var, with subscripts
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| 313 | f() {
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| 314 | argv.py "${!1}"
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| 315 | }
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| 316 | f 'nonexistent[0]'
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| 317 | array=(x y z)
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| 318 | f 'array[0]'
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| 319 | f 'array[1+1]'
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| 320 | f 'array[@]'
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| 321 | f 'array[*]'
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| 322 | # Also associative arrays.
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| 323 | ## STDOUT:
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| 324 | ['']
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| 325 | ['x']
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| 326 | ['z']
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| 327 | ['x', 'y', 'z']
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| 328 | ['x y z']
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| 329 | ## END
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| 330 |
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| 331 | #### var ref TO assoc array a[key]
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| 332 | shopt -s compat_array
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| 333 |
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| 334 | declare -A assoc=([ale]=bean [corn]=dip)
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| 335 | ref=assoc
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| 336 | #ref_AT='assoc[@]'
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| 337 |
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| 338 | # UNQUOTED doesn't work with Oil's parser
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| 339 | #ref_SUB='assoc[ale]'
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| 340 | ref_SUB='assoc["ale"]'
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| 341 |
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| 342 | ref_SUB_QUOTED='assoc["al"e]'
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| 343 |
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| 344 | ref_SUB_BAD='assoc["bad"]'
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| 345 |
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| 346 | echo ref=${!ref} # compat_array: assoc is equivalent to assoc[0]
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| 347 | #echo ref_AT=${!ref_AT}
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| 348 | echo ref_SUB=${!ref_SUB}
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| 349 | echo ref_SUB_QUOTED=${!ref_SUB_QUOTED}
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| 350 | echo ref_SUB_BAD=${!ref_SUB_BAD}
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| 351 |
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| 352 | ## STDOUT:
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| 353 | ref=
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| 354 | ref_SUB=bean
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| 355 | ref_SUB_QUOTED=bean
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| 356 | ref_SUB_BAD=
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| 357 | ## END
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| 358 |
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| 359 | #### var ref TO array with arbitrary subscripts
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| 360 | shopt -s eval_unsafe_arith compat_array
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| 361 |
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| 362 | f() {
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| 363 | local val=$(echo "${!1}")
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| 364 | if test "$val" = y; then
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| 365 | echo "works: $1"
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| 366 | fi
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| 367 | }
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| 368 | # Warmup: nice plain array reference
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| 369 | a=(x y)
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| 370 | f 'a[1]'
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| 371 | #
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| 372 | # Not allowed:
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| 373 | # no brace expansion
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| 374 | f 'a[{1,0}]' # operand expected
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| 375 | # no process substitution (but see command substitution below!)
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| 376 | f 'a[<(echo x)]' # operand expected
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| 377 | # TODO word splitting seems interesting
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| 378 | aa="1 0"
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| 379 | f 'a[$aa]' # 1 0: syntax error in expression (error token is "0")
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| 380 | # no filename globbing
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| 381 | f 'a[b*]' # operand expected
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| 382 | f 'a[1"]' # bad substitution
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| 383 | #
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| 384 | # Allowed: most everything else in section 3.5 "Shell Expansions".
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| 385 | # shell parameter expansion
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| 386 | b=1
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| 387 | f 'a[$b]'
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| 388 | f 'a[${c:-1}]'
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| 389 | # (... and presumably most of the other features there)
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| 390 | # command substitution, yikes!
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| 391 | f 'a[$(echo 1)]'
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| 392 | # arithmetic expansion
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| 393 | f 'a[$(( 3 - 2 ))]'
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| 394 |
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| 395 | # All of these are undocumented and probably shouldn't exist,
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| 396 | # though it's always possible some will turn up in the wild and
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| 397 | # we'll end up implementing them.
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| 398 |
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| 399 | ## STDOUT:
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| 400 | works: a[1]
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| 401 | works: a[$b]
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| 402 | works: a[${c:-1}]
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| 403 | works: a[$(echo 1)]
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| 404 | works: a[$(( 3 - 2 ))]
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| 405 | ## END
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| 406 |
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| 407 | #### Bizarre tilde expansion in array index
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| 408 | a=(x y)
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| 409 | PWD=1
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| 410 | ref='a[~+]'
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| 411 | echo ${!ref}
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| 412 | ## status: 1
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| 413 |
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| 414 | # Bash 4.4 had a bug, which was fixed in Bash 5.0.
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| 415 | #
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| 416 | # ## BUG bash status: 0
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| 417 | # ## BUG bash STDOUT:
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| 418 | # y
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| 419 | # ## END
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| 420 |
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| 421 | #### Indirect expansion TO fancy expansion features bash disallows
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| 422 |
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| 423 | check_indir() {
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| 424 | result="${!1}"
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| 425 | desugared_result=$(eval 'echo "${'"$1"'}"')
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| 426 | [ "$2" = "$desugared_result" ] || { echo "$1 $desugared_result"; }
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| 427 | }
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| 428 | x=y
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| 429 | y=a
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| 430 | a=(x y)
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| 431 | declare -A aa
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| 432 | aa=([k]=r [l]=s)
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| 433 | # malformed array indexing
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| 434 | check_indir "a[0"
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| 435 | check_indir "aa[k"
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| 436 | # double indirection
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| 437 | check_indir "!x" a
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| 438 | check_indir "!a[0]" y
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| 439 | # apparently everything else in the manual under "Shell Parameter Expansion"
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| 440 | check_indir "x:-foo" y
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| 441 | check_indir "x:=foo" y
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| 442 | check_indir "x:?oops" y
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| 443 | check_indir "x:+yy" yy
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| 444 | check_indir "x:0" y
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| 445 | check_indir "x:0:1" y
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| 446 | check_indir "!a@" "a aa"
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| 447 | # (!a[@] is elsewhere)
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| 448 | check_indir "#x" 1
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| 449 | check_indir "x#y"
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| 450 | check_indir "x/y/foo" foo
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| 451 | check_indir "x@Q" y
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| 452 | echo done
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| 453 | ## status: 0
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| 454 | ## stdout: done
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| 455 |
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| 456 | #### Bad var ref
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| 457 | a='bad var name'
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| 458 | echo ref ${!a}
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| 459 | echo status=$?
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| 460 |
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| 461 | ## STDOUT:
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| 462 | status=1
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| 463 | ## END
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| 464 |
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| 465 | #### Bad var ref 2
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| 466 | b='/' # really bad
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| 467 | echo ref ${!b}
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| 468 | echo status=$?
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| 469 | ## STDOUT:
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| 470 | status=1
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| 471 | ## END
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| 472 |
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| 473 | #### ${!OPTIND} (used by bash completion
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| 474 | set -- a b c
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| 475 | echo ${!OPTIND}
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| 476 | f() {
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| 477 | local OPTIND=1
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| 478 | echo ${!OPTIND}
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| 479 | local OPTIND=2
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| 480 | echo ${!OPTIND}
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| 481 | }
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| 482 | f x y z
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| 483 | ## STDOUT:
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| 484 | a
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| 485 | x
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| 486 | y
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| 487 | ## END
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| 488 |
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| 489 | #### var ref doesn't need cycle detection
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| 490 | x=y
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| 491 | y=x
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| 492 | echo cycle=${!x}
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| 493 |
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| 494 | typeset -n a=b
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| 495 | typeset -n b=a
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| 496 | echo cycle=${a}
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| 497 | ## status: 1
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| 498 | ## STDOUT:
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| 499 | cycle=x
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| 500 | ## END
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| 501 | ## OK bash status: 0
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| 502 | ## OK bash STDOUT:
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| 503 | cycle=x
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| 504 | cycle=
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| 505 | ## END
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| 506 |
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| 507 | #### Var Ref Code Injection $(tee PWNED)
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| 508 |
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| 509 | typeset -a a
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| 510 | a=(42)
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| 511 |
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| 512 | x='a[$(echo 0 | tee PWNED)]'
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| 513 |
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| 514 | echo ${!x}
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| 515 |
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| 516 | if test -f PWNED; then
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| 517 | echo PWNED
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| 518 | cat PWNED
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| 519 | else
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| 520 | echo NOPE
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| 521 | fi
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| 522 |
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| 523 | ## status: 1
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| 524 | ## STDOUT:
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| 525 | ## END
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| 526 |
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| 527 | ## BUG bash status: 0
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| 528 | ## BUG bash STDOUT:
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| 529 | 42
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| 530 | PWNED
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| 531 | 0
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| 532 | ## END
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| 533 |
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| 534 | #### ${!array_ref:-set} and ${!array_ref:=assign}
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| 535 |
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| 536 | ref='a[@]'
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| 537 | a=('' '' '')
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| 538 |
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| 539 | echo "==== check ===="
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| 540 |
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| 541 | argv.py "${!ref:-set}"
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| 542 | argv.py "${a[@]:-set}"
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| 543 |
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| 544 | echo "==== assign ===="
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| 545 |
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| 546 | argv.py "${!ref:=assign}"
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| 547 | argv.py "${!ref}"
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| 548 | a=('' '' '') # revert the state in case it is modified
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| 549 |
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| 550 | argv.py "${a[@]:=assign}"
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| 551 | argv.py "${a[@]}"
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| 552 |
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| 553 | ## STDOUT:
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| 554 | ==== check ====
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| 555 | ['', '', '']
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| 556 | ['', '', '']
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| 557 | ==== assign ====
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| 558 | ['', '', '']
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| 559 | ['', '', '']
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| 560 | ['', '', '']
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| 561 | ['', '', '']
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| 562 | ## END
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| 563 |
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| 564 | #### Array indirect expansion with suffix operators
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| 565 |
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| 566 | declare -A ref=(['dummy']=v1)
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| 567 | function test-suffixes {
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| 568 | echo "==== $1 ===="
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| 569 | ref['dummy']=$1
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| 570 | argv.py "${!ref[@]:2}"
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| 571 | argv.py "${!ref[@]:1:2}"
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| 572 | argv.py "${!ref[@]:-empty}"
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| 573 | argv.py "${!ref[@]:+set}"
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| 574 | argv.py "${!ref[@]:=assign}"
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| 575 | }
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| 576 |
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| 577 | v1=value
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| 578 | test-suffixes v1
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| 579 | echo "v1=$v1"
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| 580 |
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| 581 | v2=
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| 582 | test-suffixes v2
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| 583 | echo "v2=$v2"
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| 584 |
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| 585 | a1=()
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| 586 | test-suffixes a1
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| 587 | argv.py "${a1[@]}"
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| 588 |
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| 589 | a2=(element)
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| 590 | test-suffixes 'a2[0]'
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| 591 | argv.py "${a2[@]}"
|
| 592 |
|
| 593 | a3=(1 2 3)
|
| 594 | test-suffixes 'a3[@]'
|
| 595 | argv.py "${a3[@]}"
|
| 596 |
|
| 597 | ## STDOUT:
|
| 598 | ==== v1 ====
|
| 599 | ['lue']
|
| 600 | ['al']
|
| 601 | ['value']
|
| 602 | ['set']
|
| 603 | ['value']
|
| 604 | v1=value
|
| 605 | ==== v2 ====
|
| 606 | ['']
|
| 607 | ['']
|
| 608 | ['empty']
|
| 609 | ['']
|
| 610 | ['assign']
|
| 611 | v2=assign
|
| 612 | ==== a1 ====
|
| 613 | ['']
|
| 614 | ['']
|
| 615 | ['empty']
|
| 616 | ['']
|
| 617 | ['assign']
|
| 618 | ['assign']
|
| 619 | ==== a2[0] ====
|
| 620 | ['ement']
|
| 621 | ['le']
|
| 622 | ['element']
|
| 623 | ['set']
|
| 624 | ['element']
|
| 625 | ['element']
|
| 626 | ==== a3[@] ====
|
| 627 | ['3']
|
| 628 | ['2', '3']
|
| 629 | ['1', '2', '3']
|
| 630 | ['set']
|
| 631 | ['1', '2', '3']
|
| 632 | ['1', '2', '3']
|
| 633 | ## END
|
| 634 |
|
| 635 | #### Array indirect expansion with replacements
|
| 636 |
|
| 637 | declare -A ref=(['dummy']=v1)
|
| 638 | function test-rep {
|
| 639 | echo "==== $1 ===="
|
| 640 | ref['dummy']=$1
|
| 641 | argv.py "${!ref[@]#?}"
|
| 642 | argv.py "${!ref[@]%?}"
|
| 643 | argv.py "${!ref[@]//[a-f]}"
|
| 644 | argv.py "${!ref[@]//[a-f]/x}"
|
| 645 | }
|
| 646 |
|
| 647 | v1=value
|
| 648 | test-rep v1
|
| 649 |
|
| 650 | v2=
|
| 651 | test-rep v2
|
| 652 |
|
| 653 | a1=()
|
| 654 | test-rep a1
|
| 655 |
|
| 656 | a2=(element)
|
| 657 | test-rep 'a2[0]'
|
| 658 |
|
| 659 | a3=(1 2 3)
|
| 660 | test-rep 'a3[@]'
|
| 661 |
|
| 662 | ## STDOUT:
|
| 663 | ==== v1 ====
|
| 664 | ['alue']
|
| 665 | ['valu']
|
| 666 | ['vlu']
|
| 667 | ['vxlux']
|
| 668 | ==== v2 ====
|
| 669 | ['']
|
| 670 | ['']
|
| 671 | ['']
|
| 672 | ['']
|
| 673 | ==== a1 ====
|
| 674 | ['']
|
| 675 | ['']
|
| 676 | ['']
|
| 677 | ['']
|
| 678 | ==== a2[0] ====
|
| 679 | ['lement']
|
| 680 | ['elemen']
|
| 681 | ['lmnt']
|
| 682 | ['xlxmxnt']
|
| 683 | ==== a3[@] ====
|
| 684 | ['', '', '']
|
| 685 | ['', '', '']
|
| 686 | ['1', '2', '3']
|
| 687 | ['1', '2', '3']
|
| 688 | ## END
|
| 689 |
|
| 690 | #### Array indirect expansion with @? conversion
|
| 691 |
|
| 692 | declare -A ref=(['dummy']=v1)
|
| 693 | function test-op0 {
|
| 694 | echo "==== $1 ===="
|
| 695 | ref['dummy']=$1
|
| 696 | argv.py "${!ref[@]@Q}"
|
| 697 | argv.py "${!ref[@]@P}"
|
| 698 | argv.py "${!ref[@]@a}"
|
| 699 | }
|
| 700 |
|
| 701 | v1=value
|
| 702 | test-op0 v1
|
| 703 |
|
| 704 | v2=
|
| 705 | test-op0 v2
|
| 706 |
|
| 707 | a1=()
|
| 708 | test-op0 a1
|
| 709 |
|
| 710 | a2=(element)
|
| 711 | test-op0 'a2[0]'
|
| 712 |
|
| 713 | a3=(1 2 3)
|
| 714 | test-op0 'a3[@]'
|
| 715 |
|
| 716 | ## STDOUT:
|
| 717 | ==== v1 ====
|
| 718 | ['value']
|
| 719 | ['value']
|
| 720 | ['']
|
| 721 | ==== v2 ====
|
| 722 | ["''"]
|
| 723 | ['']
|
| 724 | ['']
|
| 725 | ==== a1 ====
|
| 726 | ['']
|
| 727 | ['']
|
| 728 | ['a']
|
| 729 | ==== a2[0] ====
|
| 730 | ['element']
|
| 731 | ['element']
|
| 732 | ['a']
|
| 733 | ==== a3[@] ====
|
| 734 | ['1', '2', '3']
|
| 735 | ['1', '2', '3']
|
| 736 | ['a', 'a', 'a']
|
| 737 | ## END
|
| 738 |
|
| 739 | # Bash 4.4 had a bug in the section "==== a3[@] ====":
|
| 740 | #
|
| 741 | # ==== a3[@] ====
|
| 742 | # []
|
| 743 | # []
|
| 744 | # []
|
| 745 |
|
| 746 | ## OK bash STDOUT:
|
| 747 | ==== v1 ====
|
| 748 | ["'value'"]
|
| 749 | ['value']
|
| 750 | ['']
|
| 751 | ==== v2 ====
|
| 752 | ["''"]
|
| 753 | ['']
|
| 754 | ['']
|
| 755 | ==== a1 ====
|
| 756 | ['']
|
| 757 | ['']
|
| 758 | ['a']
|
| 759 | ==== a2[0] ====
|
| 760 | ["'element'"]
|
| 761 | ['element']
|
| 762 | ['a']
|
| 763 | ==== a3[@] ====
|
| 764 | ["'1'", "'2'", "'3'"]
|
| 765 | ['1', '2', '3']
|
| 766 | ['a', 'a', 'a']
|
| 767 | ## END
|