| 1 | # spec/append.test.sh: Test +=
|
| 2 |
|
| 3 | ## compare_shells: bash mksh zsh
|
| 4 |
|
| 5 | #### Append string to string
|
| 6 | s='abc'
|
| 7 | s+=d
|
| 8 | echo $s
|
| 9 | ## stdout: abcd
|
| 10 |
|
| 11 | #### Append array to array
|
| 12 | a=(x y )
|
| 13 | a+=(t 'u v')
|
| 14 | argv.py "${a[@]}"
|
| 15 | ## stdout: ['x', 'y', 't', 'u v']
|
| 16 |
|
| 17 | #### Append string to undefined variable
|
| 18 |
|
| 19 | s+=foo
|
| 20 | echo s=$s
|
| 21 |
|
| 22 | # bash and mksh agree that this does NOT respect set -u.
|
| 23 | # I think that's a mistake, but += is a legacy construct, so let's copy it.
|
| 24 |
|
| 25 | set -u
|
| 26 |
|
| 27 | t+=foo
|
| 28 | echo t=$t
|
| 29 | t+=foo
|
| 30 | echo t=$t
|
| 31 | ## STDOUT:
|
| 32 | s=foo
|
| 33 | t=foo
|
| 34 | t=foofoo
|
| 35 | ## END
|
| 36 |
|
| 37 | #### Append to array to undefined variable
|
| 38 |
|
| 39 | # I wonder if Oil should have accumulators:
|
| 40 | # auto y += %(c d) or something
|
| 41 |
|
| 42 | y+=(c d)
|
| 43 | argv.py "${y[@]}"
|
| 44 | ## STDOUT:
|
| 45 | ['c', 'd']
|
| 46 | ## END
|
| 47 |
|
| 48 | #### error: s+=(my array)
|
| 49 | s='abc'
|
| 50 | s+=(d e f)
|
| 51 | echo $s
|
| 52 | ## status: 1
|
| 53 | ## stdout-json: ""
|
| 54 | ## BUG bash/mksh status: 0
|
| 55 | ## BUG bash/mksh stdout: abc
|
| 56 | ## OK zsh status: 0
|
| 57 | ## OK zsh stdout: abc d e f
|
| 58 |
|
| 59 | #### error: myarray+=s
|
| 60 |
|
| 61 | # They treat this as implicit index 0. We disallow this on the LHS, so we will
|
| 62 | # also disallow it on the RHS.
|
| 63 | a=(x y )
|
| 64 | a+=z
|
| 65 | argv.py "${a[@]}"
|
| 66 | ## status: 1
|
| 67 | ## stdout-json: ""
|
| 68 | ## OK bash/mksh status: 0
|
| 69 | ## OK bash/mksh stdout: ['xz', 'y']
|
| 70 | ## OK zsh status: 0
|
| 71 | ## OK zsh stdout: ['x', 'y', 'z']
|
| 72 |
|
| 73 | #### typeset s+=(my array)
|
| 74 | typeset s='abc'
|
| 75 | echo $s
|
| 76 |
|
| 77 | typeset s+=(d e f)
|
| 78 | echo status=$?
|
| 79 | argv.py "${s[@]}"
|
| 80 |
|
| 81 | ## status: 1
|
| 82 | ## STDOUT:
|
| 83 | abc
|
| 84 | ## END
|
| 85 | ## OK bash status: 0
|
| 86 | ## OK bash STDOUT:
|
| 87 | abc
|
| 88 | status=0
|
| 89 | ['abc', 'd', 'e', 'f']
|
| 90 | ## END
|
| 91 |
|
| 92 | #### error: typeset myarray+=s
|
| 93 | typeset a=(x y)
|
| 94 | argv.py "${a[@]}"
|
| 95 | typeset a+=s
|
| 96 | argv.py "${a[@]}"
|
| 97 |
|
| 98 | ## status: 1
|
| 99 | ## STDOUT:
|
| 100 | ['x', 'y']
|
| 101 | ## END
|
| 102 | ## BUG bash status: 0
|
| 103 | ## BUG bash STDOUT:
|
| 104 | ['x', 'y']
|
| 105 | ['xs', 'y']
|
| 106 | ## END
|
| 107 | ## N-I mksh STDOUT:
|
| 108 | ## END
|
| 109 |
|
| 110 | #### error: append used like env prefix
|
| 111 | # This should be an error in other shells but it's not.
|
| 112 | A=a
|
| 113 | A+=a printenv.py A
|
| 114 | ## status: 2
|
| 115 | ## BUG bash/zsh status: 0
|
| 116 | ## BUG bash/zsh stdout: aa
|
| 117 | ## BUG mksh status: 0
|
| 118 | ## BUG mksh stdout: a
|
| 119 |
|
| 120 | #### myarray[1]+=s - Append to element
|
| 121 | # They treat this as implicit index 0. We disallow this on the LHS, so we will
|
| 122 | # also disallow it on the RHS.
|
| 123 | a=(x y )
|
| 124 | a[1]+=z
|
| 125 | argv.py "${a[@]}"
|
| 126 | ## status: 0
|
| 127 | ## stdout: ['x', 'yz']
|
| 128 | ## BUG zsh stdout: ['xz', 'y']
|
| 129 |
|
| 130 | #### myarray[-1]+=s - Append to last element
|
| 131 | # Works in bash, but not mksh. It seems like bash is doing the right thing.
|
| 132 | # a[-1] is allowed on the LHS. mksh doesn't have negative indexing?
|
| 133 | a=(1 '2 3')
|
| 134 | a[-1]+=' 4'
|
| 135 | argv.py "${a[@]}"
|
| 136 | ## stdout: ['1', '2 3 4']
|
| 137 | ## BUG mksh stdout: ['1', '2 3', ' 4']
|
| 138 |
|
| 139 | #### Try to append list to element
|
| 140 | # bash - runtime error: cannot assign list to array number
|
| 141 | # mksh - a[-1]+: is not an identifier
|
| 142 | # osh - parse error -- could be better!
|
| 143 | a=(1 '2 3')
|
| 144 | a[-1]+=(4 5)
|
| 145 | argv.py "${a[@]}"
|
| 146 |
|
| 147 | ## stdout-json: ""
|
| 148 | ## status: 2
|
| 149 |
|
| 150 | ## OK bash status: 0
|
| 151 | ## OK bash STDOUT:
|
| 152 | ['1', '2 3']
|
| 153 | ## END
|
| 154 |
|
| 155 | ## OK zsh status: 0
|
| 156 | ## OK zsh STDOUT:
|
| 157 | ['1', '2 3', '4', '5']
|
| 158 | ## END
|
| 159 |
|
| 160 | ## N-I mksh status: 1
|
| 161 |
|
| 162 | #### Strings have value semantics, not reference semantics
|
| 163 | s1='abc'
|
| 164 | s2=$s1
|
| 165 | s1+='d'
|
| 166 | echo $s1 $s2
|
| 167 | ## stdout: abcd abc
|
| 168 |
|
| 169 | #### typeset s+=
|
| 170 |
|
| 171 | typeset s+=foo
|
| 172 | echo s=$s
|
| 173 |
|
| 174 | # bash and mksh agree that this does NOT respect set -u.
|
| 175 | # I think that's a mistake, but += is a legacy construct, so let's copy it.
|
| 176 |
|
| 177 | set -u
|
| 178 |
|
| 179 | typeset t+=foo
|
| 180 | echo t=$t
|
| 181 | typeset t+=foo
|
| 182 | echo t=$t
|
| 183 | ## STDOUT:
|
| 184 | s=foo
|
| 185 | t=foo
|
| 186 | t=foofoo
|
| 187 | ## END
|
| 188 | ## N-I zsh status: 1
|
| 189 | ## N-I zsh stdout-json: ""
|
| 190 |
|
| 191 | #### typeset s${dyn}+=
|
| 192 |
|
| 193 | dyn=x
|
| 194 |
|
| 195 | typeset s${dyn}+=foo
|
| 196 | echo sx=$sx
|
| 197 |
|
| 198 | # bash and mksh agree that this does NOT respect set -u.
|
| 199 | # I think that's a mistake, but += is a legacy construct, so let's copy it.
|
| 200 |
|
| 201 | set -u
|
| 202 |
|
| 203 | typeset t${dyn}+=foo
|
| 204 | echo tx=$tx
|
| 205 | typeset t${dyn}+=foo
|
| 206 | echo tx=$tx
|
| 207 | ## STDOUT:
|
| 208 | sx=foo
|
| 209 | tx=foo
|
| 210 | tx=foofoo
|
| 211 | ## END
|
| 212 | ## N-I zsh status: 1
|
| 213 | ## N-I zsh stdout-json: ""
|
| 214 |
|
| 215 | #### export readonly +=
|
| 216 |
|
| 217 | export e+=foo
|
| 218 | echo e=$e
|
| 219 |
|
| 220 | readonly r+=bar
|
| 221 | echo r=$r
|
| 222 |
|
| 223 | set -u
|
| 224 |
|
| 225 | export e+=foo
|
| 226 | echo e=$e
|
| 227 |
|
| 228 | #readonly r+=foo
|
| 229 | #echo r=$e
|
| 230 |
|
| 231 | ## STDOUT:
|
| 232 | e=foo
|
| 233 | r=bar
|
| 234 | e=foofoo
|
| 235 | ## END
|
| 236 | ## N-I zsh status: 1
|
| 237 | ## N-I zsh stdout-json: ""
|
| 238 |
|
| 239 | #### local +=
|
| 240 |
|
| 241 | f() {
|
| 242 | local s+=foo
|
| 243 | echo s=$s
|
| 244 |
|
| 245 | set -u
|
| 246 | local s+=foo
|
| 247 | echo s=$s
|
| 248 | }
|
| 249 |
|
| 250 | f
|
| 251 | ## STDOUT:
|
| 252 | s=foo
|
| 253 | s=foofoo
|
| 254 | ## END
|
| 255 | ## N-I zsh status: 1
|
| 256 | ## N-I zsh stdout-json: ""
|
| 257 |
|
| 258 | #### assign builtin appending array: declare d+=(d e)
|
| 259 |
|
| 260 | declare d+=(d e)
|
| 261 | echo "${d[@]}"
|
| 262 | declare d+=(c l)
|
| 263 | echo "${d[@]}"
|
| 264 |
|
| 265 | readonly r+=(r e)
|
| 266 | echo "${r[@]}"
|
| 267 | # can't do this again
|
| 268 |
|
| 269 | f() {
|
| 270 | local l+=(l o)
|
| 271 | echo "${l[@]}"
|
| 272 |
|
| 273 | local l+=(c a)
|
| 274 | echo "${l[@]}"
|
| 275 | }
|
| 276 |
|
| 277 | f
|
| 278 |
|
| 279 | ## STDOUT:
|
| 280 | d e
|
| 281 | d e c l
|
| 282 | r e
|
| 283 | l o
|
| 284 | l o c a
|
| 285 | ## END
|
| 286 | ## N-I mksh status: 1
|
| 287 | ## N-I mksh stdout-json: ""
|
| 288 | ## N-I zsh status: 1
|
| 289 | ## N-I zsh stdout-json: ""
|
| 290 |
|
| 291 | #### export+=array disallowed (strict_array)
|
| 292 | shopt -s strict_array
|
| 293 |
|
| 294 | export e+=(e x)
|
| 295 | echo "${e[@]}"
|
| 296 |
|
| 297 | ## status: 1
|
| 298 | ## STDOUT:
|
| 299 | ## END
|
| 300 | ## N-I bash status: 0
|
| 301 | ## N-I bash STDOUT:
|
| 302 | e x
|
| 303 | ## END
|