1 | ## compare_shells: bash mksh
|
2 | ## oils_failures_allowed: 4
|
3 |
|
4 | #### nounset / set -u with empty array (bug in bash 4.3, fixed in 4.4)
|
5 |
|
6 | # http://lists.gnu.org/archive/html/help-bash/2017-09/msg00005.html
|
7 |
|
8 | set -o nounset
|
9 | empty=()
|
10 | argv.py "${empty[@]}"
|
11 | echo status=$?
|
12 | ## STDOUT:
|
13 | []
|
14 | status=0
|
15 | ## END
|
16 | ## BUG mksh stdout-json: ""
|
17 | ## BUG mksh status: 1
|
18 |
|
19 | #### local array
|
20 | # mksh support local variables, but not local arrays, oddly.
|
21 | f() {
|
22 | local a=(1 '2 3')
|
23 | argv.py "${a[0]}"
|
24 | }
|
25 | f
|
26 | ## stdout: ['1']
|
27 | ## status: 0
|
28 | ## BUG mksh status: 1
|
29 | ## BUG mksh stdout-json: ""
|
30 |
|
31 | #### Command with with word splitting in array
|
32 | array=('1 2' $(echo '3 4'))
|
33 | argv.py "${array[@]}"
|
34 | ## stdout: ['1 2', '3', '4']
|
35 |
|
36 | #### space before ( in array initialization
|
37 | # NOTE: mksh accepts this, but bash doesn't
|
38 | a= (1 '2 3')
|
39 | echo $a
|
40 | ## status: 2
|
41 | ## OK mksh status: 0
|
42 | ## OK mksh stdout: 1
|
43 |
|
44 | #### array over multiple lines
|
45 | a=(
|
46 | 1
|
47 | '2 3'
|
48 | )
|
49 | argv.py "${a[@]}"
|
50 | ## stdout: ['1', '2 3']
|
51 | ## status: 0
|
52 |
|
53 | #### array with invalid token
|
54 | a=(
|
55 | 1
|
56 | &
|
57 | '2 3'
|
58 | )
|
59 | argv.py "${a[@]}"
|
60 | ## status: 2
|
61 | ## OK mksh status: 1
|
62 |
|
63 | #### array with empty string
|
64 | empty=('')
|
65 | argv.py "${empty[@]}"
|
66 | ## stdout: ['']
|
67 |
|
68 | #### Retrieve index
|
69 | a=(1 '2 3')
|
70 | argv.py "${a[1]}"
|
71 | ## stdout: ['2 3']
|
72 |
|
73 | #### Retrieve out of bounds index
|
74 | a=(1 '2 3')
|
75 | argv.py "${a[3]}"
|
76 | ## stdout: ['']
|
77 |
|
78 | #### Negative index
|
79 | a=(1 '2 3')
|
80 | argv.py "${a[-1]}" "${a[-2]}" "${a[-5]}" # last one out of bounds
|
81 | ## stdout: ['2 3', '1', '']
|
82 | ## N-I mksh stdout: ['', '', '']
|
83 |
|
84 | #### Negative index and sparse array
|
85 | a=(0 1 2 3 4)
|
86 | unset a[1]
|
87 | unset a[4]
|
88 | echo "${a[@]}"
|
89 | echo -1 ${a[-1]}
|
90 | echo -2 ${a[-2]}
|
91 | echo -3 ${a[-3]}
|
92 | echo -4 ${a[-4]}
|
93 | echo -5 ${a[-5]}
|
94 |
|
95 | a[-1]+=0 # append 0 on the end
|
96 | echo ${a[@]}
|
97 | (( a[-1] += 42 ))
|
98 | echo ${a[@]}
|
99 |
|
100 | ## STDOUT:
|
101 | 0 2 3
|
102 | -1 3
|
103 | -2 2
|
104 | -3
|
105 | -4 0
|
106 | -5
|
107 | 0 2 30
|
108 | 0 2 72
|
109 | ## END
|
110 | ## BUG mksh STDOUT:
|
111 | 0 2 3
|
112 | -1
|
113 | -2
|
114 | -3
|
115 | -4
|
116 | -5
|
117 | 0 2 3 0
|
118 | 0 2 3 42
|
119 | ## END
|
120 |
|
121 | #### Negative index and sparse array
|
122 | a=(0 1)
|
123 | unset 'a[-1]' # remove last element
|
124 | a+=(2 3)
|
125 | echo ${a[0]} $((a[0]))
|
126 | echo ${a[1]} $((a[1]))
|
127 | echo ${a[2]} $((a[2]))
|
128 | echo ${a[3]} $((a[3]))
|
129 | ## STDOUT:
|
130 | 0 0
|
131 | 2 2
|
132 | 3 3
|
133 | 0
|
134 | ## END
|
135 | ## BUG mksh STDOUT:
|
136 | 0 0
|
137 | 1 1
|
138 | 2 2
|
139 | 3 3
|
140 | ## END
|
141 |
|
142 | #### Length after unset
|
143 | a=(0 1 2 3)
|
144 | unset a[-1]
|
145 | echo len=${#a[@]}
|
146 | unset a[-1]
|
147 | echo len=${#a[@]}
|
148 | ## STDOUT:
|
149 | len=3
|
150 | len=2
|
151 | ## END
|
152 | ## BUG mksh STDOUT:
|
153 | len=4
|
154 | len=4
|
155 | ## END
|
156 |
|
157 | #### Retrieve index that is a variable
|
158 | a=(1 '2 3')
|
159 | i=1
|
160 | argv.py "${a[$i]}"
|
161 | ## stdout: ['2 3']
|
162 |
|
163 | #### Retrieve index that is a variable without $
|
164 | a=(1 '2 3')
|
165 | i=5
|
166 | argv.py "${a[i-4]}"
|
167 | ## stdout: ['2 3']
|
168 |
|
169 | #### Retrieve index that is a command sub
|
170 | a=(1 '2 3')
|
171 | argv.py "${a[$(echo 1)]}"
|
172 | ## stdout: ['2 3']
|
173 |
|
174 | #### Retrieve array indices with ${!a}
|
175 | a=(1 '2 3')
|
176 | argv.py "${!a[@]}"
|
177 | ## stdout: ['0', '1']
|
178 |
|
179 | #### Retrieve sparse array indices with ${!a}
|
180 | a=()
|
181 | (( a[99]=1 ))
|
182 | argv.py "${!a[@]}"
|
183 | ## STDOUT:
|
184 | ['99']
|
185 | ## END
|
186 |
|
187 | #### ${!a[1]} is named ref in bash
|
188 | # mksh ignores it
|
189 | foo=bar
|
190 | a=('1 2' foo '2 3')
|
191 | argv.py "${!a[1]}"
|
192 | ## status: 0
|
193 | ## stdout: ['bar']
|
194 | ## N-I mksh stdout: ['a[1]']
|
195 |
|
196 | #### ${!a} on array
|
197 |
|
198 | # bash gives empty string because it's like a[0]
|
199 | # mksh gives the name of the variable with !. Very weird.
|
200 |
|
201 | a=(1 '2 3')
|
202 | argv.py "${!a}"
|
203 |
|
204 | ## stdout: ['']
|
205 | ## status: 0
|
206 | ## BUG mksh stdout: ['a']
|
207 | ## BUG mksh status: 0
|
208 |
|
209 | #### All elements unquoted
|
210 | a=(1 '2 3')
|
211 | argv.py ${a[@]}
|
212 | ## stdout: ['1', '2', '3']
|
213 |
|
214 | #### All elements quoted
|
215 | a=(1 '2 3')
|
216 | argv.py "${a[@]}"
|
217 | ## stdout: ['1', '2 3']
|
218 |
|
219 | #### $*
|
220 | a=(1 '2 3')
|
221 | argv.py ${a[*]}
|
222 | ## stdout: ['1', '2', '3']
|
223 |
|
224 | #### "$*"
|
225 | a=(1 '2 3')
|
226 | argv.py "${a[*]}"
|
227 | ## stdout: ['1 2 3']
|
228 |
|
229 | #### Interpolate array into array
|
230 | a=(1 '2 3')
|
231 | a=(0 "${a[@]}" '4 5')
|
232 | argv.py "${a[@]}"
|
233 | ## stdout: ['0', '1', '2 3', '4 5']
|
234 |
|
235 | #### Exporting array doesn't do anything, not even first element
|
236 | # bash parses, but doesn't execute.
|
237 | # mksh gives syntax error -- parses differently with 'export'
|
238 | # osh no longer parses this statically.
|
239 |
|
240 | export PYTHONPATH
|
241 |
|
242 | PYTHONPATH=mystr # NOTE: in bash, this doesn't work afterward!
|
243 | printenv.py PYTHONPATH
|
244 |
|
245 | PYTHONPATH=(myarray)
|
246 | printenv.py PYTHONPATH
|
247 |
|
248 | PYTHONPATH=(a b c)
|
249 | printenv.py PYTHONPATH
|
250 |
|
251 | ## status: 0
|
252 | ## STDOUT:
|
253 | mystr
|
254 | None
|
255 | None
|
256 | ## END
|
257 |
|
258 | #### strict_array prevents exporting array
|
259 |
|
260 | shopt -s strict_array
|
261 |
|
262 | export PYTHONPATH
|
263 | PYTHONPATH=(a b c)
|
264 | printenv.py PYTHONPATH
|
265 |
|
266 | ## status: 1
|
267 | ## STDOUT:
|
268 | ## END
|
269 |
|
270 | ## N-I bash/mksh status: 0
|
271 | ## N-I bash/mksh STDOUT:
|
272 | None
|
273 | ## END
|
274 |
|
275 | #### Arrays can't be used as env bindings
|
276 | # Hm bash it treats it as a string!
|
277 | A=a B=(b b) printenv.py A B
|
278 | ## status: 2
|
279 | ## stdout-json: ""
|
280 | ## OK bash stdout-json: "a\n(b b)\n"
|
281 | ## OK bash status: 0
|
282 | ## OK mksh status: 1
|
283 |
|
284 | #### Set element
|
285 | a=(1 '2 3')
|
286 | a[0]=9
|
287 | argv.py "${a[@]}"
|
288 | ## stdout: ['9', '2 3']
|
289 |
|
290 | #### Set element with var ref
|
291 | a=(1 '2 3')
|
292 | i=0
|
293 | a[$i]=9
|
294 | argv.py "${a[@]}"
|
295 | ## stdout: ['9', '2 3']
|
296 |
|
297 | #### Set element with array ref
|
298 | # This makes parsing a little more complex. Anything can be inside [],
|
299 | # including other [].
|
300 | a=(1 '2 3')
|
301 | i=(0 1)
|
302 | a[${i[1]}]=9
|
303 | argv.py "${a[@]}"
|
304 | ## stdout: ['1', '9']
|
305 |
|
306 | #### Set array item to array
|
307 | a=(1 2)
|
308 | a[0]=(3 4)
|
309 | echo "status=$?"
|
310 | ## stdout-json: ""
|
311 | ## status: 2
|
312 | ## N-I mksh status: 1
|
313 | ## BUG bash stdout: status=1
|
314 | ## BUG bash status: 0
|
315 |
|
316 | #### Slice of array with [@]
|
317 | # mksh doesn't support this syntax! It's a bash extension.
|
318 | a=(1 2 3)
|
319 | argv.py "${a[@]:1:2}"
|
320 | ## stdout: ['2', '3']
|
321 | ## N-I mksh status: 1
|
322 | ## N-I mksh stdout-json: ""
|
323 |
|
324 | #### Negative slice begin
|
325 | # mksh doesn't support this syntax! It's a bash extension.
|
326 | # NOTE: for some reason -2) has to be in parens? Ah that's because it
|
327 | # conflicts with :-! That's silly. You can also add a space.
|
328 | a=(1 2 3 4 5)
|
329 | argv.py "${a[@]:(-4)}"
|
330 | ## stdout: ['2', '3', '4', '5']
|
331 | ## N-I mksh status: 1
|
332 | ## N-I mksh stdout-json: ""
|
333 |
|
334 | #### Negative slice length
|
335 | a=(1 2 3 4 5)
|
336 | argv.py "${a[@]: 1: -3}"
|
337 | ## status: 1
|
338 | ## stdout-json: ""
|
339 |
|
340 | #### Slice with arithmetic
|
341 | a=(1 2 3)
|
342 | i=5
|
343 | argv.py "${a[@]:i-4:2}"
|
344 | ## stdout: ['2', '3']
|
345 | ## N-I mksh status: 1
|
346 | ## N-I mksh stdout-json: ""
|
347 |
|
348 | #### Number of elements
|
349 | a=(1 '2 3')
|
350 | echo "${#a[@]}" ${#a[@]} # bug fix: also test without quotes
|
351 | ## stdout: 2 2
|
352 |
|
353 | #### Length of an element
|
354 | a=(1 '2 3')
|
355 | echo "${#a[1]}"
|
356 | ## stdout: 3
|
357 |
|
358 | #### Iteration
|
359 | a=(1 '2 3')
|
360 | for v in "${a[@]}"; do
|
361 | echo $v
|
362 | done
|
363 | ## stdout-json: "1\n2 3\n"
|
364 |
|
365 | #### glob within array yields separate elements
|
366 | touch _tmp/y.Y _tmp/yy.Y
|
367 | a=(_tmp/*.Y)
|
368 | argv.py "${a[@]}"
|
369 | ## stdout: ['_tmp/y.Y', '_tmp/yy.Y']
|
370 |
|
371 | #### declare array and then append
|
372 | declare -a array
|
373 | array+=(a)
|
374 | array+=(b c)
|
375 | argv.py "${array[@]}"
|
376 | ## stdout: ['a', 'b', 'c']
|
377 |
|
378 | #### Array syntax in wrong place
|
379 | ls foo=(1 2)
|
380 | ## status: 1
|
381 | ## OK bash status: 2
|
382 |
|
383 | #### Single array with :-
|
384 |
|
385 | # 2024-06 - bash 5.2 and mksh now match, bash 4.4 differed.
|
386 | # Could change OSH
|
387 | # zsh agrees with OSH, but it fails most test cases
|
388 |
|
389 | single=('')
|
390 | argv.py ${single[@]:-none} x "${single[@]:-none}"
|
391 | ## stdout: ['none', 'x', 'none']
|
392 |
|
393 | #### Stripping a whole array unquoted
|
394 | # Problem: it joins it first.
|
395 | files=('foo.c' 'sp ace.h' 'bar.c')
|
396 | argv.py ${files[@]%.c}
|
397 | ## status: 0
|
398 | ## stdout: ['foo', 'sp', 'ace.h', 'bar']
|
399 | ## N-I mksh status: 1
|
400 | ## N-I mksh stdout-json: ""
|
401 |
|
402 | #### Stripping a whole array quoted
|
403 | files=('foo.c' 'sp ace.h' 'bar.c')
|
404 | argv.py "${files[@]%.c}"
|
405 | ## status: 0
|
406 | ## stdout: ['foo', 'sp ace.h', 'bar']
|
407 | ## N-I mksh status: 1
|
408 | ## N-I mksh stdout-json: ""
|
409 |
|
410 | #### Multiple subscripts not allowed
|
411 | # NOTE: bash 4.3 had a bug where it ignored the bad subscript, but now it is
|
412 | # fixed.
|
413 | a=('123' '456')
|
414 | argv.py "${a[0]}" "${a[0][0]}"
|
415 | ## stdout-json: ""
|
416 | ## status: 2
|
417 | ## OK bash/mksh status: 1
|
418 |
|
419 | #### Length op, index op, then transform op is not allowed
|
420 | a=('123' '456')
|
421 | echo "${#a[0]}" "${#a[0]/1/xxx}"
|
422 | ## stdout-json: ""
|
423 | ## status: 2
|
424 | ## OK bash/mksh status: 1
|
425 |
|
426 | #### ${mystr[@]} and ${mystr[*]} are no-ops
|
427 | s='abc'
|
428 | echo ${s[@]}
|
429 | echo ${s[*]}
|
430 | ## STDOUT:
|
431 | abc
|
432 | abc
|
433 | ## END
|
434 |
|
435 | #### ${mystr[@]} and ${mystr[*]} disallowed with strict_array
|
436 |
|
437 | $SH -c 'shopt -s strict_array; s="abc"; echo ${s[@]}'
|
438 | echo status=$?
|
439 |
|
440 | $SH -c 'shopt -s strict_array; s="abc"; echo ${s[*]}'
|
441 | echo status=$?
|
442 |
|
443 | ## status: 0
|
444 | ## STDOUT:
|
445 | status=1
|
446 | status=1
|
447 | ## END
|
448 | ## N-I bash/mksh STDOUT:
|
449 | abc
|
450 | status=0
|
451 | abc
|
452 | status=0
|
453 | ## END
|
454 |
|
455 | #### Create a "user" array out of the argv array
|
456 | set -- 'a b' 'c'
|
457 | array1=('x y' 'z')
|
458 | array2=("$@")
|
459 | argv.py "${array1[@]}" "${array2[@]}"
|
460 | ## stdout: ['x y', 'z', 'a b', 'c']
|
461 |
|
462 | #### Tilde expansion within array
|
463 | HOME=/home/bob
|
464 | a=(~/src ~/git)
|
465 | echo "${a[@]}"
|
466 | ## stdout: /home/bob/src /home/bob/git
|
467 |
|
468 | #### Brace Expansion within Array
|
469 | a=(-{a,b} {c,d}-)
|
470 | echo "${a[@]}"
|
471 | ## stdout: -a -b c- d-
|
472 |
|
473 | #### array default
|
474 | default=('1 2' '3')
|
475 | argv.py "${undef[@]:-${default[@]}}"
|
476 | ## stdout: ['1 2', '3']
|
477 |
|
478 | #### Singleton Array Copy and Assign. OSH can't index strings with ints
|
479 | a=( '12 3' )
|
480 | b=( "${a[@]}" )
|
481 | c="${a[@]}" # This decays it to a string
|
482 | d=${a[*]} # This decays it to a string
|
483 | echo ${#a[0]} ${#b[0]}
|
484 | echo ${#a[@]} ${#b[@]}
|
485 |
|
486 | # osh is intentionally stricter, and these fail.
|
487 | echo ${#c[0]} ${#d[0]}
|
488 | echo ${#c[@]} ${#d[@]}
|
489 |
|
490 | ## status: 1
|
491 | ## STDOUT:
|
492 | 4 4
|
493 | 1 1
|
494 | ## END
|
495 | ## OK bash/mksh status: 0
|
496 | ## OK bash/mksh STDOUT:
|
497 | 4 4
|
498 | 1 1
|
499 | 4 4
|
500 | 1 1
|
501 | ## END
|
502 |
|
503 | #### declare -a / local -a is empty array
|
504 | declare -a myarray
|
505 | argv.py "${myarray[@]}"
|
506 | myarray+=('x')
|
507 | argv.py "${myarray[@]}"
|
508 |
|
509 | f() {
|
510 | local -a myarray
|
511 | argv.py "${myarray[@]}"
|
512 | myarray+=('x')
|
513 | argv.py "${myarray[@]}"
|
514 | }
|
515 | f
|
516 | ## STDOUT:
|
517 | []
|
518 | ['x']
|
519 | []
|
520 | ['x']
|
521 | ## END
|
522 |
|
523 | #### Create sparse array
|
524 | a=()
|
525 | (( a[99]=1 )) # osh doesn't parse index assignment outside arithmetic yet
|
526 | echo len=${#a[@]}
|
527 | argv.py "${a[@]}"
|
528 | echo "unset=${a[33]}"
|
529 | echo len-of-unset=${#a[33]}
|
530 | ## STDOUT:
|
531 | len=1
|
532 | ['1']
|
533 | unset=
|
534 | len-of-unset=0
|
535 | ## END
|
536 |
|
537 | #### Create sparse array implicitly
|
538 | (( a[99]=1 ))
|
539 | echo len=${#a[@]}
|
540 | argv.py "${a[@]}"
|
541 | echo "unset=${a[33]}"
|
542 | echo len-of-unset=${#a[33]}
|
543 | ## STDOUT:
|
544 | len=1
|
545 | ['1']
|
546 | unset=
|
547 | len-of-unset=0
|
548 | ## END
|
549 |
|
550 | #### Append sparse arrays
|
551 | a=()
|
552 | (( a[99]=1 ))
|
553 | b=()
|
554 | (( b[33]=2 ))
|
555 | (( b[66]=3 ))
|
556 | a+=( "${b[@]}" )
|
557 | argv.py "${a[@]}"
|
558 | argv.py "${a[99]}" "${a[100]}" "${a[101]}"
|
559 | ## STDOUT:
|
560 | ['1', '2', '3']
|
561 | ['1', '2', '3']
|
562 | ## END
|
563 |
|
564 | #### Slice of sparse array with [@]
|
565 | # mksh doesn't support this syntax! It's a bash extension.
|
566 | (( a[33]=1 ))
|
567 | (( a[66]=2 ))
|
568 | (( a[99]=2 ))
|
569 | argv.py "${a[@]:15:2}"
|
570 | ## stdout: ['1', '2']
|
571 | ## N-I mksh status: 1
|
572 | ## N-I mksh stdout-json: ""
|
573 |
|
574 | #### Using an array itself as the index on LHS
|
575 | shopt -u strict_arith
|
576 | a[a]=42
|
577 | a[a]=99
|
578 | argv.py "${a[@]}" "${a[0]}" "${a[42]}" "${a[99]}"
|
579 |
|
580 | ## status: 0
|
581 | ## STDOUT:
|
582 | ['42', '99', '42', '99', '']
|
583 | ## END
|
584 |
|
585 | #### Using an array itself as the index on RHS
|
586 | shopt -u strict_arith
|
587 | a=(1 2 3)
|
588 | (( x = a[a] ))
|
589 | echo $x
|
590 | ## status: 0
|
591 | ## STDOUT:
|
592 | 2
|
593 | ## END
|
594 |
|
595 | #### a[$x$y] on LHS and RHS
|
596 | x=1
|
597 | y=2
|
598 | a[$x$y]=foo
|
599 |
|
600 | # not allowed by OSH parsing
|
601 | #echo ${a[$x$y]}
|
602 |
|
603 | echo ${a[12]}
|
604 | echo ${#a[@]}
|
605 |
|
606 | ## STDOUT:
|
607 | foo
|
608 | 1
|
609 | ## END
|
610 |
|
611 |
|
612 | #### Dynamic parsing of LHS a[$code]=value
|
613 |
|
614 | declare -a array
|
615 | array[x=1]='one'
|
616 |
|
617 | code='y=2'
|
618 | #code='1+2' # doesn't work either
|
619 | array[$code]='two'
|
620 |
|
621 | argv.py "${array[@]}"
|
622 | echo x=$x
|
623 | echo y=$y
|
624 |
|
625 | ## STDOUT:
|
626 | ['one', 'two']
|
627 | x=1
|
628 | y=2
|
629 | ## END
|
630 | ## N-I dash stdout-json: ""
|
631 | ## N-I dash status: 2
|
632 |
|
633 | #### Dynamic parsing of RHS ${a[$code]}
|
634 | declare -a array
|
635 | array=(zero one two three)
|
636 |
|
637 | echo ${array[1+2]}
|
638 |
|
639 | code='1+2'
|
640 | echo ${array[$code]}
|
641 |
|
642 | ## STDOUT:
|
643 | three
|
644 | three
|
645 | ## END
|
646 |
|
647 | # it still dynamically parses
|
648 |
|
649 | ## OK zsh STDOUT:
|
650 | two
|
651 | two
|
652 | ## END
|
653 |
|
654 |
|
655 | #### Is element set? test -v a[i]
|
656 |
|
657 | # note: modern versions of zsh implement this
|
658 |
|
659 | array=(1 2 3 '')
|
660 |
|
661 | echo 'no quotes'
|
662 | test -v 'array[1]'
|
663 | echo status=$?
|
664 |
|
665 | test -v 'array[3]'
|
666 | echo empty=$?
|
667 |
|
668 | test -v 'array[4]'
|
669 | echo status=$?
|
670 |
|
671 | echo
|
672 |
|
673 | echo 'arith expr'
|
674 | test -v 'array[1+1]'
|
675 | echo status=$?
|
676 |
|
677 | test -v 'array[4+1]'
|
678 | echo status=$?
|
679 |
|
680 | ## STDOUT:
|
681 | no quotes
|
682 | status=0
|
683 | empty=0
|
684 | status=1
|
685 |
|
686 | arith expr
|
687 | status=0
|
688 | status=1
|
689 | ## END
|
690 |
|
691 | ## N-I mksh STDOUT:
|
692 | no quotes
|
693 | status=2
|
694 | empty=2
|
695 | status=2
|
696 |
|
697 | arith expr
|
698 | status=2
|
699 | status=2
|
700 | ## END
|
701 |
|
702 | #### [[ -v a[i] ]]
|
703 |
|
704 | # note: modern versions of zsh implement this
|
705 |
|
706 | array=(1 2 3)
|
707 | [[ -v array[1] ]]
|
708 | echo status=$?
|
709 |
|
710 | [[ -v array[4] ]]
|
711 | echo status=$?
|
712 |
|
713 | echo
|
714 |
|
715 | [[ -v array[1+1] ]]
|
716 | echo status=$?
|
717 |
|
718 | [[ -v array[4+1] ]]
|
719 | echo status=$?
|
720 |
|
721 | ## STDOUT:
|
722 | status=0
|
723 | status=1
|
724 |
|
725 | status=0
|
726 | status=1
|
727 | ## END
|
728 |
|
729 | ## N-I mksh status: 1
|
730 | ## N-I mksh STDOUT:
|
731 | ## END
|
732 |
|
733 |
|
734 | #### [[ -v array[expr]] ]] does arith expression evaluation
|
735 |
|
736 | typeset -a array
|
737 | array=('' nonempty)
|
738 |
|
739 | # This feels inconsistent with the rest of bash?
|
740 | zero=0
|
741 |
|
742 | [[ -v array[zero+0] ]]
|
743 | echo zero=$?
|
744 |
|
745 | [[ -v array[zero+1] ]]
|
746 | echo one=$?
|
747 |
|
748 | [[ -v array[zero+2] ]]
|
749 | echo two=$?
|
750 |
|
751 | echo ---
|
752 |
|
753 | i='0+0'
|
754 | [[ -v array[i] ]]
|
755 | echo zero=$?
|
756 |
|
757 | i='0+1'
|
758 | [[ -v array[i] ]]
|
759 | echo one=$?
|
760 |
|
761 | i='0+2'
|
762 | [[ -v array[i] ]]
|
763 | echo two=$?
|
764 |
|
765 | echo ---
|
766 |
|
767 | i='0+0'
|
768 | [[ -v array[$i] ]]
|
769 | echo zero=$?
|
770 |
|
771 | i='0+1'
|
772 | [[ -v array[$i] ]]
|
773 | echo one=$?
|
774 |
|
775 | i='0+2'
|
776 | [[ -v array[$i] ]]
|
777 | echo two=$?
|
778 |
|
779 |
|
780 | ## STDOUT:
|
781 | zero=0
|
782 | one=0
|
783 | two=1
|
784 | ---
|
785 | zero=0
|
786 | one=0
|
787 | two=1
|
788 | ---
|
789 | zero=0
|
790 | one=0
|
791 | two=1
|
792 | ## END
|
793 |
|
794 | ## N-I mksh status: 1
|
795 | ## N-I mksh STDOUT:
|
796 | ## END
|