| 1 | ## compare_shells: bash dash mksh zsh
|
| 2 | ## oils_failures_allowed: 2
|
| 3 |
|
| 4 | #### Lazy Evaluation of Alternative
|
| 5 | i=0
|
| 6 | x=x
|
| 7 | echo ${x:-$((i++))}
|
| 8 | echo $i
|
| 9 | echo ${undefined:-$((i++))}
|
| 10 | echo $i # i is one because the alternative was only evaluated once
|
| 11 | ## status: 0
|
| 12 | ## stdout-json: "x\n0\n0\n1\n"
|
| 13 | ## N-I dash status: 2
|
| 14 | ## N-I dash stdout-json: "x\n0\n"
|
| 15 |
|
| 16 | #### Default value when empty
|
| 17 | empty=''
|
| 18 | echo ${empty:-is empty}
|
| 19 | ## stdout: is empty
|
| 20 |
|
| 21 | #### Default value when unset
|
| 22 | echo ${unset-is unset}
|
| 23 | ## stdout: is unset
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| 24 |
|
| 25 | #### Unquoted with array as default value
|
| 26 | set -- '1 2' '3 4'
|
| 27 | argv.py X${unset=x"$@"x}X
|
| 28 | argv.py X${unset=x$@x}X # If you want OSH to split, write this
|
| 29 | # osh
|
| 30 | ## STDOUT:
|
| 31 | ['Xx1', '2', '3', '4xX']
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| 32 | ['Xx1', '2', '3', '4xX']
|
| 33 | ## END
|
| 34 | ## OK osh STDOUT:
|
| 35 | ['Xx1 2', '3 4xX']
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| 36 | ['Xx1', '2', '3', '4xX']
|
| 37 | ## END
|
| 38 | ## OK zsh STDOUT:
|
| 39 | ['Xx1 2 3 4xX']
|
| 40 | ['Xx1 2 3 4xX']
|
| 41 | ## END
|
| 42 |
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| 43 | #### Quoted with array as default value
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| 44 | set -- '1 2' '3 4'
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| 45 | argv.py "X${unset=x"$@"x}X"
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| 46 | argv.py "X${unset=x$@x}X" # OSH is the same here
|
| 47 | ## STDOUT:
|
| 48 | ['Xx1 2 3 4xX']
|
| 49 | ['Xx1 2 3 4xX']
|
| 50 | ## END
|
| 51 |
|
| 52 | # Bash 4.2..4.4 had a bug. This was fixed in Bash 5.0.
|
| 53 | #
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| 54 | # ## BUG bash STDOUT:
|
| 55 | # ['Xx1', '2', '3', '4xX']
|
| 56 | # ['Xx1 2 3 4xX']
|
| 57 | # ## END
|
| 58 |
|
| 59 | ## OK osh STDOUT:
|
| 60 | ['Xx1 2', '3 4xX']
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| 61 | ['Xx1 2 3 4xX']
|
| 62 | ## END
|
| 63 |
|
| 64 | #### Assign default with array
|
| 65 | set -- '1 2' '3 4'
|
| 66 | argv.py X${unset=x"$@"x}X
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| 67 | argv.py "$unset"
|
| 68 | ## STDOUT:
|
| 69 | ['Xx1', '2', '3', '4xX']
|
| 70 | ['x1 2 3 4x']
|
| 71 | ## END
|
| 72 | ## OK osh STDOUT:
|
| 73 | ['Xx1 2', '3 4xX']
|
| 74 | ['x1 2 3 4x']
|
| 75 | ## END
|
| 76 | ## OK zsh STDOUT:
|
| 77 | ['Xx1 2 3 4xX']
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| 78 | ['x1 2 3 4x']
|
| 79 | ## END
|
| 80 |
|
| 81 | #### Assign default value when empty
|
| 82 | empty=''
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| 83 | ${empty:=is empty}
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| 84 | echo $empty
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| 85 | ## stdout: is empty
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| 86 |
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| 87 | #### Assign default value when unset
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| 88 | ${unset=is unset}
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| 89 | echo $unset
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| 90 | ## stdout: is unset
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| 91 |
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| 92 | #### ${v:+foo} Alternative value when empty
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| 93 | v=foo
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| 94 | empty=''
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| 95 | echo ${v:+v is not empty} ${empty:+is not empty}
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| 96 | ## stdout: v is not empty
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| 97 |
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| 98 | #### ${v+foo} Alternative value when unset
|
| 99 | v=foo
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| 100 | echo ${v+v is not unset} ${unset:+is not unset}
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| 101 | ## stdout: v is not unset
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| 102 |
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| 103 | #### "${x+foo}" quoted (regression)
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| 104 | # Python's configure caught this
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| 105 | argv.py "${with_icc+set}" = set
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| 106 | ## STDOUT:
|
| 107 | ['', '=', 'set']
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| 108 | ## END
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| 109 |
|
| 110 | #### ${s+foo} and ${s:+foo} when set -u
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| 111 | set -u
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| 112 | v=v
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| 113 | echo v=${v:+foo}
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| 114 | echo v=${v+foo}
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| 115 | unset v
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| 116 | echo v=${v:+foo}
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| 117 | echo v=${v+foo}
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| 118 | ## STDOUT:
|
| 119 | v=foo
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| 120 | v=foo
|
| 121 | v=
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| 122 | v=
|
| 123 | ## END
|
| 124 |
|
| 125 | #### "${array[@]} with set -u (bash is outlier)
|
| 126 | case $SH in dash) exit ;; esac
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| 127 |
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| 128 | set -u
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| 129 |
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| 130 | typeset -a empty
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| 131 | empty=()
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| 132 |
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| 133 | echo empty /"${empty[@]}"/
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| 134 | echo undefined /"${undefined[@]}"/
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| 135 |
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| 136 | ## status: 1
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| 137 | ## STDOUT:
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| 138 | empty //
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| 139 | ## END
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| 140 |
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| 141 | ## BUG bash status: 0
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| 142 | ## BUG bash STDOUT:
|
| 143 | empty //
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| 144 | undefined //
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| 145 | ## END
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| 146 |
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| 147 | # empty array is unset in mksh
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| 148 | ## BUG mksh status: 1
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| 149 | ## BUG mksh STDOUT:
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| 150 | ## END
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| 151 |
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| 152 | ## N-I dash status: 0
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| 153 | ## N-I dash STDOUT:
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| 154 | ## END
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| 155 |
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| 156 |
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| 157 | #### "${undefined[@]+foo}" and "${undefined[@]:+foo}", with set -u
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| 158 | case $SH in dash) exit ;; esac
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| 159 |
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| 160 | set -u
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| 161 |
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| 162 | echo plus /"${array[@]+foo}"/
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| 163 | echo plus colon /"${array[@]:+foo}"/
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| 164 |
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| 165 | ## STDOUT:
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| 166 | plus //
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| 167 | plus colon //
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| 168 | ## END
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| 169 |
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| 170 | ## N-I dash STDOUT:
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| 171 | ## END
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| 172 |
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| 173 | #### "${a[@]+foo}" and "${a[@]:+foo}" - operators are equivalent on arrays?
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| 174 |
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| 175 | case $SH in dash) exit ;; esac
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| 176 |
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| 177 | echo '+ ' /"${array[@]+foo}"/
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| 178 | echo '+:' /"${array[@]:+foo}"/
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| 179 | echo
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| 180 |
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| 181 | typeset -a array
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| 182 | array=()
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| 183 |
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| 184 | echo '+ ' /"${array[@]+foo}"/
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| 185 | echo '+:' /"${array[@]:+foo}"/
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| 186 | echo
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| 187 |
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| 188 | array=('')
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| 189 |
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| 190 | echo '+ ' /"${array[@]+foo}"/
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| 191 | echo '+:' /"${array[@]:+foo}"/
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| 192 | echo
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| 193 |
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| 194 | array=(spam eggs)
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| 195 |
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| 196 | echo '+ ' /"${array[@]+foo}"/
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| 197 | echo '+:' /"${array[@]:+foo}"/
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| 198 | echo
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| 199 |
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| 200 |
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| 201 | ## BUG mksh STDOUT:
|
| 202 | + //
|
| 203 | +: //
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| 204 |
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| 205 | + //
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| 206 | +: //
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| 207 |
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| 208 | + /foo/
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| 209 | +: //
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| 210 |
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| 211 | + /foo/
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| 212 | +: /foo/
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| 213 |
|
| 214 | ## END
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| 215 |
|
| 216 | # Bash 2.0..4.4 has a bug that "${a[@]:-xxx}" produces an empty string. It
|
| 217 | # seemed to consider a[@] and a[*] are non-empty when there is at least one
|
| 218 | # element even if the element is empty. This was fixed in Bash 5.0.
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| 219 | #
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| 220 | # ## BUG bash STDOUT:
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| 221 | # + //
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| 222 | # +: //
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| 223 | #
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| 224 | # + //
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| 225 | # +: //
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| 226 | #
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| 227 | # + /foo/
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| 228 | # +: /foo/
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| 229 | #
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| 230 | # + /foo/
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| 231 | # +: /foo/
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| 232 | #
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| 233 | # ## END
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| 234 |
|
| 235 | ## BUG zsh STDOUT:
|
| 236 | + //
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| 237 | +: //
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| 238 |
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| 239 | + /foo/
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| 240 | +: //
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| 241 |
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| 242 | + /foo/
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| 243 | +: /foo/
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| 244 |
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| 245 | + /foo/
|
| 246 | +: /foo/
|
| 247 |
|
| 248 | ## END
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| 249 |
|
| 250 | ## N-I dash STDOUT:
|
| 251 | ## END
|
| 252 |
|
| 253 |
|
| 254 |
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| 255 | #### Nix idiom ${!hooksSlice+"${!hooksSlice}"} - was workaround for obsolete bash 4.3 bug
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| 256 |
|
| 257 | case $SH in dash|mksh|zsh) exit ;; esac
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| 258 |
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| 259 | # https://oilshell.zulipchat.com/#narrow/stream/307442-nix/topic/Replacing.20bash.20with.20osh.20in.20Nixpkgs.20stdenv
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| 260 |
|
| 261 | (argv.py ${!hooksSlice+"${!hooksSlice}"})
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| 262 |
|
| 263 | hooksSlice=x
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| 264 |
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| 265 | argv.py ${!hooksSlice+"${!hooksSlice}"}
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| 266 |
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| 267 | declare -a hookSlice=()
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| 268 |
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| 269 | argv.py ${!hooksSlice+"${!hooksSlice}"}
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| 270 |
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| 271 | foo=42
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| 272 | bar=43
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| 273 |
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| 274 | declare -a hooksSlice=(foo bar spam eggs)
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| 275 |
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| 276 | argv.py ${!hooksSlice+"${!hooksSlice}"}
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| 277 |
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| 278 | ## STDOUT:
|
| 279 | []
|
| 280 | []
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| 281 | ['42']
|
| 282 | ## END
|
| 283 |
|
| 284 | # Bash 4.4 has a bug that ${!undef-} successfully generates an empty word.
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| 285 | #
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| 286 | # ## BUG bash STDOUT:
|
| 287 | # []
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| 288 | # []
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| 289 | # []
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| 290 | # ['42']
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| 291 | # ## END
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| 292 |
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| 293 | ## OK dash/mksh/zsh STDOUT:
|
| 294 | ## END
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| 295 |
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| 296 | #### ${v-foo} and ${v:-foo} when set -u
|
| 297 | set -u
|
| 298 | v=v
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| 299 | echo v=${v:-foo}
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| 300 | echo v=${v-foo}
|
| 301 | unset v
|
| 302 | echo v=${v:-foo}
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| 303 | echo v=${v-foo}
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| 304 | ## STDOUT:
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| 305 | v=v
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| 306 | v=v
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| 307 | v=foo
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| 308 | v=foo
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| 309 | ## END
|
| 310 |
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| 311 | #### array and - and +
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| 312 | case $SH in (dash) exit ;; esac
|
| 313 |
|
| 314 | shopt -s compat_array # to refer to array as scalar
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| 315 |
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| 316 | empty=()
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| 317 | a1=('')
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| 318 | a2=('' x)
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| 319 | a3=(3 4)
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| 320 | echo empty=${empty[@]-minus}
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| 321 | echo a1=${a1[@]-minus}
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| 322 | echo a1[0]=${a1[0]-minus}
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| 323 | echo a2=${a2[@]-minus}
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| 324 | echo a3=${a3[@]-minus}
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| 325 | echo ---
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| 326 |
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| 327 | echo empty=${empty[@]+plus}
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| 328 | echo a1=${a1[@]+plus}
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| 329 | echo a1[0]=${a1[0]+plus}
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| 330 | echo a2=${a2[@]+plus}
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| 331 | echo a3=${a3[@]+plus}
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| 332 | echo ---
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| 333 |
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| 334 | echo empty=${empty+plus}
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| 335 | echo a1=${a1+plus}
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| 336 | echo a2=${a2+plus}
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| 337 | echo a3=${a3+plus}
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| 338 | echo ---
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| 339 |
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| 340 | # Test quoted arrays too
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| 341 | argv.py "${empty[@]-minus}"
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| 342 | argv.py "${empty[@]+plus}"
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| 343 | argv.py "${a1[@]-minus}"
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| 344 | argv.py "${a1[@]+plus}"
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| 345 | argv.py "${a1[0]-minus}"
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| 346 | argv.py "${a1[0]+plus}"
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| 347 | argv.py "${a2[@]-minus}"
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| 348 | argv.py "${a2[@]+plus}"
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| 349 | argv.py "${a3[@]-minus}"
|
| 350 | argv.py "${a3[@]+plus}"
|
| 351 |
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| 352 | ## STDOUT:
|
| 353 | empty=minus
|
| 354 | a1=
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| 355 | a1[0]=
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| 356 | a2= x
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| 357 | a3=3 4
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| 358 | ---
|
| 359 | empty=
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| 360 | a1=plus
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| 361 | a1[0]=plus
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| 362 | a2=plus
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| 363 | a3=plus
|
| 364 | ---
|
| 365 | empty=
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| 366 | a1=plus
|
| 367 | a2=plus
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| 368 | a3=plus
|
| 369 | ---
|
| 370 | ['minus']
|
| 371 | []
|
| 372 | ['']
|
| 373 | ['plus']
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| 374 | ['']
|
| 375 | ['plus']
|
| 376 | ['', 'x']
|
| 377 | ['plus']
|
| 378 | ['3', '4']
|
| 379 | ['plus']
|
| 380 | ## END
|
| 381 | ## N-I dash stdout-json: ""
|
| 382 | ## N-I zsh stdout-json: "empty=\na1=\n"
|
| 383 | ## N-I zsh status: 1
|
| 384 |
|
| 385 | #### $@ (empty) and - and +
|
| 386 | echo argv=${@-minus}
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| 387 | echo argv=${@+plus}
|
| 388 | echo argv=${@:-minus}
|
| 389 | echo argv=${@:+plus}
|
| 390 | ## STDOUT:
|
| 391 | argv=minus
|
| 392 | argv=
|
| 393 | argv=minus
|
| 394 | argv=
|
| 395 | ## END
|
| 396 | ## BUG dash/zsh STDOUT:
|
| 397 | argv=
|
| 398 | argv=plus
|
| 399 | argv=minus
|
| 400 | argv=
|
| 401 | ## END
|
| 402 |
|
| 403 | #### $@ ("") and - and +
|
| 404 | set -- ""
|
| 405 | echo argv=${@-minus}
|
| 406 | echo argv=${@+plus}
|
| 407 | echo argv=${@:-minus}
|
| 408 | echo argv=${@:+plus}
|
| 409 | ## STDOUT:
|
| 410 | argv=
|
| 411 | argv=plus
|
| 412 | argv=minus
|
| 413 | argv=
|
| 414 | ## END
|
| 415 |
|
| 416 | # Zsh treats $@ as an array unlike Bash converting it to a string by joining it
|
| 417 | # with a space.
|
| 418 |
|
| 419 | ## OK zsh STDOUT:
|
| 420 | argv=
|
| 421 | argv=plus
|
| 422 | argv=
|
| 423 | argv=plus
|
| 424 | ## END
|
| 425 |
|
| 426 | #### $@ ("" "") and - and +
|
| 427 | set -- "" ""
|
| 428 | echo argv=${@-minus}
|
| 429 | echo argv=${@+plus}
|
| 430 | echo argv=${@:-minus}
|
| 431 | echo argv=${@:+plus}
|
| 432 | ## STDOUT:
|
| 433 | argv=
|
| 434 | argv=plus
|
| 435 | argv=
|
| 436 | argv=plus
|
| 437 | ## END
|
| 438 |
|
| 439 | #### $* ("" "") and - and + (IFS=)
|
| 440 | set -- "" ""
|
| 441 | IFS=
|
| 442 | echo argv=${*-minus}
|
| 443 | echo argv=${*+plus}
|
| 444 | echo argv=${*:-minus}
|
| 445 | echo argv=${*:+plus}
|
| 446 | ## STDOUT:
|
| 447 | argv=
|
| 448 | argv=plus
|
| 449 | argv=
|
| 450 | argv=plus
|
| 451 | ## END
|
| 452 | ## BUG mksh STDOUT:
|
| 453 | argv=
|
| 454 | argv=plus
|
| 455 | argv=minus
|
| 456 | argv=
|
| 457 | ## END
|
| 458 |
|
| 459 | #### "$*" ("" "") and - and + (IFS=)
|
| 460 | set -- "" ""
|
| 461 | IFS=
|
| 462 | echo "argv=${*-minus}"
|
| 463 | echo "argv=${*+plus}"
|
| 464 | echo "argv=${*:-minus}"
|
| 465 | echo "argv=${*:+plus}"
|
| 466 | ## STDOUT:
|
| 467 | argv=
|
| 468 | argv=plus
|
| 469 | argv=minus
|
| 470 | argv=
|
| 471 | ## END
|
| 472 |
|
| 473 | #### assoc array and - and +
|
| 474 | case $SH in (dash|mksh) exit ;; esac
|
| 475 |
|
| 476 | declare -A empty=()
|
| 477 | declare -A assoc=(['k']=v)
|
| 478 |
|
| 479 | echo empty=${empty[@]-minus}
|
| 480 | echo empty=${empty[@]+plus}
|
| 481 | echo assoc=${assoc[@]-minus}
|
| 482 | echo assoc=${assoc[@]+plus}
|
| 483 |
|
| 484 | echo ---
|
| 485 | echo empty=${empty[@]:-minus}
|
| 486 | echo empty=${empty[@]:+plus}
|
| 487 | echo assoc=${assoc[@]:-minus}
|
| 488 | echo assoc=${assoc[@]:+plus}
|
| 489 | ## STDOUT:
|
| 490 | empty=minus
|
| 491 | empty=
|
| 492 | assoc=v
|
| 493 | assoc=plus
|
| 494 | ---
|
| 495 | empty=minus
|
| 496 | empty=
|
| 497 | assoc=v
|
| 498 | assoc=plus
|
| 499 | ## END
|
| 500 |
|
| 501 | ## BUG zsh STDOUT:
|
| 502 | empty=
|
| 503 | empty=plus
|
| 504 | assoc=minus
|
| 505 | assoc=
|
| 506 | ---
|
| 507 | empty=minus
|
| 508 | empty=
|
| 509 | assoc=minus
|
| 510 | assoc=
|
| 511 | ## END
|
| 512 |
|
| 513 | ## N-I dash/mksh STDOUT:
|
| 514 | ## END
|
| 515 |
|
| 516 |
|
| 517 | #### Error when empty
|
| 518 | empty=''
|
| 519 | echo ${empty:?'is em'pty} # test eval of error
|
| 520 | echo should not get here
|
| 521 | ## stdout-json: ""
|
| 522 | ## status: 1
|
| 523 | ## OK dash status: 2
|
| 524 |
|
| 525 | #### Error when unset
|
| 526 | echo ${unset?is empty}
|
| 527 | echo should not get here
|
| 528 | ## stdout-json: ""
|
| 529 | ## status: 1
|
| 530 | ## OK dash status: 2
|
| 531 |
|
| 532 | #### Error when unset
|
| 533 | v=foo
|
| 534 | echo ${v+v is not unset} ${unset:+is not unset}
|
| 535 | ## stdout: v is not unset
|
| 536 |
|
| 537 | #### ${var=x} dynamic scope
|
| 538 | f() { : "${hello:=x}"; echo $hello; }
|
| 539 | f
|
| 540 | echo hello=$hello
|
| 541 |
|
| 542 | f() { hello=x; }
|
| 543 | f
|
| 544 | echo hello=$hello
|
| 545 | ## STDOUT:
|
| 546 | x
|
| 547 | hello=x
|
| 548 | hello=x
|
| 549 | ## END
|
| 550 |
|
| 551 | #### array ${arr[0]=x}
|
| 552 | arr=()
|
| 553 | echo ${#arr[@]}
|
| 554 | : ${arr[0]=x}
|
| 555 | echo ${#arr[@]}
|
| 556 | ## STDOUT:
|
| 557 | 0
|
| 558 | 1
|
| 559 | ## END
|
| 560 | ## N-I dash status: 2
|
| 561 | ## N-I dash stdout-json: ""
|
| 562 | ## N-I zsh status: 1
|
| 563 | ## N-I zsh stdout-json: "0\n"
|
| 564 |
|
| 565 | #### assoc array ${arr["k"]=x}
|
| 566 | # note: this also works in zsh
|
| 567 |
|
| 568 | declare -A arr=()
|
| 569 | echo ${#arr[@]}
|
| 570 | : ${arr['k']=x}
|
| 571 | echo ${#arr[@]}
|
| 572 | ## STDOUT:
|
| 573 | 0
|
| 574 | 1
|
| 575 | ## END
|
| 576 | ## N-I dash status: 2
|
| 577 | ## N-I dash stdout-json: ""
|
| 578 | ## N-I mksh status: 1
|
| 579 | ## N-I mksh stdout-json: ""
|
| 580 |
|
| 581 | #### "\z" as arg
|
| 582 | echo "${undef-\$}"
|
| 583 | echo "${undef-\(}"
|
| 584 | echo "${undef-\z}"
|
| 585 | echo "${undef-\"}"
|
| 586 | echo "${undef-\`}"
|
| 587 | echo "${undef-\\}"
|
| 588 | ## STDOUT:
|
| 589 | $
|
| 590 | \(
|
| 591 | \z
|
| 592 | "
|
| 593 | `
|
| 594 | \
|
| 595 | ## END
|
| 596 | ## BUG yash STDOUT:
|
| 597 | $
|
| 598 | (
|
| 599 | z
|
| 600 | "
|
| 601 | `
|
| 602 | \
|
| 603 | ## END
|
| 604 | # Note: this line terminates the quoting by ` not to confuse the text editor.
|
| 605 |
|
| 606 |
|
| 607 | #### "\e" as arg
|
| 608 | echo "${undef-\e}"
|
| 609 | ## STDOUT:
|
| 610 | \e
|
| 611 | ## END
|
| 612 | ## BUG zsh/mksh stdout-repr: '\x1b\n'
|
| 613 | ## BUG yash stdout: e
|
| 614 |
|
| 615 |
|
| 616 | #### op-test for ${a} and ${a[0]}
|
| 617 | case $SH in dash) exit ;; esac
|
| 618 |
|
| 619 | test-hyphen() {
|
| 620 | echo "a : '${a-no-colon}' '${a:-with-colon}'"
|
| 621 | echo "a[0]: '${a[0]-no-colon}' '${a[0]:-with-colon}'"
|
| 622 | }
|
| 623 |
|
| 624 | a=()
|
| 625 | test-hyphen
|
| 626 | a=("")
|
| 627 | test-hyphen
|
| 628 | a=("" "")
|
| 629 | test-hyphen
|
| 630 | IFS=
|
| 631 | test-hyphen
|
| 632 |
|
| 633 | ## STDOUT:
|
| 634 | a : 'no-colon' 'with-colon'
|
| 635 | a[0]: 'no-colon' 'with-colon'
|
| 636 | a : '' 'with-colon'
|
| 637 | a[0]: '' 'with-colon'
|
| 638 | a : '' 'with-colon'
|
| 639 | a[0]: '' 'with-colon'
|
| 640 | a : '' 'with-colon'
|
| 641 | a[0]: '' 'with-colon'
|
| 642 | ## END
|
| 643 |
|
| 644 | # Zsh's ${a} and ${a[@]} implement something different from the other shells'.
|
| 645 |
|
| 646 | ## OK zsh STDOUT:
|
| 647 | a : '' 'with-colon'
|
| 648 | a[0]: 'no-colon' 'with-colon'
|
| 649 | a : '' 'with-colon'
|
| 650 | a[0]: 'no-colon' 'with-colon'
|
| 651 | a : ' ' ' '
|
| 652 | a[0]: 'no-colon' 'with-colon'
|
| 653 | a : '' 'with-colon'
|
| 654 | a[0]: 'no-colon' 'with-colon'
|
| 655 | ## END
|
| 656 |
|
| 657 | ## N-I dash STDOUT:
|
| 658 | ## END:
|
| 659 |
|
| 660 |
|
| 661 | #### op-test for ${a[@]} and ${a[*]}
|
| 662 | case $SH in dash) exit ;; esac
|
| 663 |
|
| 664 | test-hyphen() {
|
| 665 | echo "a[@]: '${a[@]-no-colon}' '${a[@]:-with-colon}'"
|
| 666 | echo "a[*]: '${a[*]-no-colon}' '${a[*]:-with-colon}'"
|
| 667 | }
|
| 668 |
|
| 669 | a=()
|
| 670 | test-hyphen
|
| 671 | a=("")
|
| 672 | test-hyphen
|
| 673 | a=("" "")
|
| 674 | test-hyphen
|
| 675 | IFS=
|
| 676 | test-hyphen
|
| 677 |
|
| 678 | ## STDOUT:
|
| 679 | a[@]: 'no-colon' 'with-colon'
|
| 680 | a[*]: 'no-colon' 'with-colon'
|
| 681 | a[@]: '' 'with-colon'
|
| 682 | a[*]: '' 'with-colon'
|
| 683 | a[@]: ' ' ' '
|
| 684 | a[*]: ' ' ' '
|
| 685 | a[@]: ' ' ' '
|
| 686 | a[*]: '' 'with-colon'
|
| 687 | ## END
|
| 688 |
|
| 689 | # Bash 2.0..4.4 has a bug that "${a[@]:-xxx}" produces an empty string. It
|
| 690 | # seemed to consider a[@] and a[*] are non-empty when there is at least one
|
| 691 | # element even if the element is empty. This was fixed in Bash 5.0.
|
| 692 | #
|
| 693 | # ## BUG bash STDOUT:
|
| 694 | # a[@]: 'no-colon' 'with-colon'
|
| 695 | # a[*]: 'no-colon' 'with-colon'
|
| 696 | # a[@]: '' ''
|
| 697 | # a[*]: '' ''
|
| 698 | # a[@]: ' ' ' '
|
| 699 | # a[*]: ' ' ' '
|
| 700 | # a[@]: ' ' ' '
|
| 701 | # a[*]: '' ''
|
| 702 | # ## END
|
| 703 |
|
| 704 | # Zsh's ${a} and ${a[@]} implement something different from the other shells'.
|
| 705 |
|
| 706 | ## OK zsh STDOUT:
|
| 707 | a[@]: '' 'with-colon'
|
| 708 | a[*]: '' 'with-colon'
|
| 709 | a[@]: '' ''
|
| 710 | a[*]: '' 'with-colon'
|
| 711 | a[@]: ' ' ' '
|
| 712 | a[*]: ' ' ' '
|
| 713 | a[@]: ' ' ' '
|
| 714 | a[*]: '' 'with-colon'
|
| 715 | ## END
|
| 716 |
|
| 717 | ## N-I dash STDOUT:
|
| 718 | ## END:
|
| 719 |
|
| 720 |
|
| 721 | #### op-test for ${!array} with array="a" and array="a[0]"
|
| 722 | case $SH in dash|mksh|zsh) exit ;; esac
|
| 723 |
|
| 724 | test-hyphen() {
|
| 725 | ref='a'
|
| 726 | echo "ref=a : '${!ref-no-colon}' '${!ref:-with-colon}'"
|
| 727 | ref='a[0]'
|
| 728 | echo "ref=a[0]: '${!ref-no-colon}' '${!ref:-with-colon}'"
|
| 729 | }
|
| 730 |
|
| 731 | a=()
|
| 732 | test-hyphen
|
| 733 | a=("")
|
| 734 | test-hyphen
|
| 735 | a=("" "")
|
| 736 | test-hyphen
|
| 737 | IFS=
|
| 738 | test-hyphen
|
| 739 |
|
| 740 | ## STDOUT:
|
| 741 | ref=a : 'no-colon' 'with-colon'
|
| 742 | ref=a[0]: 'no-colon' 'with-colon'
|
| 743 | ref=a : '' 'with-colon'
|
| 744 | ref=a[0]: '' 'with-colon'
|
| 745 | ref=a : '' 'with-colon'
|
| 746 | ref=a[0]: '' 'with-colon'
|
| 747 | ref=a : '' 'with-colon'
|
| 748 | ref=a[0]: '' 'with-colon'
|
| 749 | ## END
|
| 750 |
|
| 751 | ## N-I dash/mksh/zsh STDOUT:
|
| 752 | ## END:
|
| 753 |
|
| 754 |
|
| 755 | #### op-test for ${!array} with array="a[@]" or array="a[*]"
|
| 756 | case $SH in dash|mksh|zsh) exit ;; esac
|
| 757 |
|
| 758 | test-hyphen() {
|
| 759 | ref='a[@]'
|
| 760 | echo "ref=a[@]: '${!ref-no-colon}' '${!ref:-with-colon}'"
|
| 761 | ref='a[*]'
|
| 762 | echo "ref=a[*]: '${!ref-no-colon}' '${!ref:-with-colon}'"
|
| 763 | }
|
| 764 |
|
| 765 | a=()
|
| 766 | test-hyphen
|
| 767 | a=("")
|
| 768 | test-hyphen
|
| 769 | a=("" "")
|
| 770 | test-hyphen
|
| 771 | IFS=
|
| 772 | test-hyphen
|
| 773 |
|
| 774 | ## STDOUT:
|
| 775 | ref=a[@]: 'no-colon' 'with-colon'
|
| 776 | ref=a[*]: 'no-colon' 'with-colon'
|
| 777 | ref=a[@]: '' 'with-colon'
|
| 778 | ref=a[*]: '' 'with-colon'
|
| 779 | ref=a[@]: ' ' ' '
|
| 780 | ref=a[*]: ' ' ' '
|
| 781 | ref=a[@]: ' ' ' '
|
| 782 | ref=a[*]: '' 'with-colon'
|
| 783 | ## END
|
| 784 |
|
| 785 | ## BUG bash STDOUT:
|
| 786 | ref=a[@]: 'no-colon' 'with-colon'
|
| 787 | ref=a[*]: 'no-colon' 'with-colon'
|
| 788 | ref=a[@]: '' ''
|
| 789 | ref=a[*]: '' ''
|
| 790 | ref=a[@]: ' ' ' '
|
| 791 | ref=a[*]: ' ' ' '
|
| 792 | ref=a[@]: ' ' ' '
|
| 793 | ref=a[*]: '' ''
|
| 794 | ## END
|
| 795 |
|
| 796 | ## N-I dash/mksh/zsh STDOUT:
|
| 797 | ## END:
|
| 798 |
|
| 799 |
|
| 800 | #### op-test for unquoted ${a[*]:-empty} with IFS=
|
| 801 | case $SH in dash) exit ;; esac
|
| 802 |
|
| 803 | IFS=
|
| 804 | a=("" "")
|
| 805 | argv.py ${a[*]:-empty}
|
| 806 |
|
| 807 | ## STDOUT:
|
| 808 | []
|
| 809 | ## END
|
| 810 |
|
| 811 | ## BUG mksh STDOUT:
|
| 812 | ['empty']
|
| 813 | ## END
|
| 814 |
|
| 815 | ## N-I dash STDOUT:
|
| 816 | ## END:
|