1	#!/usr/bin/env bash
2
3	#### [bash_unset] local-unset / dynamic-unset for localvar
4	unlocal() { unset -v "$1"; }
5
6	f1() {
7	local v=local
8	unset v
9	echo "[$1,local,(unset)] v: ${v-(unset)}"
10	}
11	v=global
12	f1 global
13
14	f1() {
15	local v=local
16	unlocal v
17	echo "[$1,local,(unlocal)] v: ${v-(unset)}"
18	}
19	v=global
20	f1 'global'
21
22	## STDOUT:
23	# bash-unset
24	# local-unset = value-unset
25	# dynamic-unset = cell-unset
26	[global,local,(unset)] v: (unset)
27	[global,local,(unlocal)] v: global
28	## END
29
30	## OK osh/mksh/yash STDOUT:
31	# always-cell-unset
32	# local-unset = cell-unset
33	# dynamic-unset = cell-unset
34	[global,local,(unset)] v: global
35	[global,local,(unlocal)] v: global
36	## END
37
38	## OK zsh/ash/dash STDOUT:
39	# always-value-unset
40	# local-unset = value-unset
41	# dynamic-unset = value-unset
42	[global,local,(unset)] v: (unset)
43	[global,local,(unlocal)] v: (unset)
44	## END
45
46
47	#### [bash_unset] local-unset / dynamic-unset for localvar (mutated from tempenv)
48	unlocal() { unset -v "$1"; }
49
50	f1() {
51	local v=local
52	unset v
53	echo "[$1,local,(unset)] v: ${v-(unset)}"
54	}
55	v=global
56	v=tempenv f1 'global,tempenv'
57
58	f1() {
59	local v=local
60	unlocal v
61	echo "[$1,local,(unlocal)] v: ${v-(unset)}"
62	}
63	v=global
64	v=tempenv f1 'global,tempenv'
65
66	## STDOUT:
67	# bash-unset (bash-5.1)
68	# local-unset = local-unset
69	# dynamic-unset = cell-unset
70	[global,tempenv,local,(unset)] v: (unset)
71	[global,tempenv,local,(unlocal)] v: global
72	## END
73
74	## BUG bash STDOUT:
75	# bash-unset (bash-4.3..5.0 bug)
76	[global,tempenv,local,(unset)] v: global
77	[global,tempenv,local,(unlocal)] v: global
78	## END
79
80	## OK osh/mksh/yash STDOUT:
81	# always-cell-unset
82	# local-unset = cell-unset
83	# dynamic-unset = cell-unset
84	[global,tempenv,local,(unset)] v: tempenv
85	[global,tempenv,local,(unlocal)] v: tempenv
86	## END
87
88	## OK zsh/ash/dash STDOUT:
89	# always-value-unset
90	# local-unset = value-unset
91	# dynamic-unset = value-unset
92	[global,tempenv,local,(unset)] v: (unset)
93	[global,tempenv,local,(unlocal)] v: (unset)
94	## END
95
96
97	#### [bash_unset] local-unset / dynamic-unset for tempenv
98	unlocal() { unset -v "$1"; }
99
100	f1() {
101	unset v
102	echo "[$1,(unset)] v: ${v-(unset)}"
103	}
104	v=global
105	v=tempenv f1 'global,tempenv'
106
107	f1() {
108	unlocal v
109	echo "[$1,(unlocal)] v: ${v-(unset)}"
110	}
111	v=global
112	v=tempenv f1 'global,tempenv'
113
114	## STDOUT:
115	# always-cell-unset, bash-unset
116	# local-unset = cell-unset
117	# dynamic-unset = cell-unset
118	[global,tempenv,(unset)] v: global
119	[global,tempenv,(unlocal)] v: global
120	## END
121
122	## OK zsh/ash/dash/mksh STDOUT:
123	# always-value-unset, mksh-unset
124	# local-unset = value-unset
125	# dynamic-unset = value-unset
126	[global,tempenv,(unset)] v: (unset)
127	[global,tempenv,(unlocal)] v: (unset)
128	## END
129
130	#### [bash_unset] function call with tempenv vs tempenv-eval
131	unlocal() { unset -v "$1"; }
132
133	f5() {
134	echo "[$1] v: ${v-(unset)}"
135	local v
136	echo "[$1,local] v: ${v-(unset)}"
137	( unset v
138	echo "[$1,local+unset] v: ${v-(unset)}" )
139	( unlocal v
140	echo "[$1,local+unlocal] v: ${v-(unset)}" )
141	}
142	v=global
143	f5 'global'
144	v=tempenv f5 'global,tempenv'
145	v=tempenv eval 'f5 "global,tempenv,(eval)"'
146
147	## STDOUT:
148	# bash-unset (bash-5.1)
149	[global] v: global
150	[global,local] v: (unset)
151	[global,local+unset] v: (unset)
152	[global,local+unlocal] v: global
153	[global,tempenv] v: tempenv
154	[global,tempenv,local] v: tempenv
155	[global,tempenv,local+unset] v: (unset)
156	[global,tempenv,local+unlocal] v: global
157	[global,tempenv,(eval)] v: tempenv
158	[global,tempenv,(eval),local] v: tempenv
159	[global,tempenv,(eval),local+unset] v: (unset)
160	[global,tempenv,(eval),local+unlocal] v: tempenv
161	## END
162
163	## BUG bash STDOUT:
164	# bash-unset (bash-4.3..5.0 bug)
165	[global] v: global
166	[global,local] v: (unset)
167	[global,local+unset] v: (unset)
168	[global,local+unlocal] v: global
169	[global,tempenv] v: tempenv
170	[global,tempenv,local] v: tempenv
171	[global,tempenv,local+unset] v: global
172	[global,tempenv,local+unlocal] v: global
173	[global,tempenv,(eval)] v: tempenv
174	[global,tempenv,(eval),local] v: tempenv
175	[global,tempenv,(eval),local+unset] v: (unset)
176	[global,tempenv,(eval),local+unlocal] v: tempenv
177	## END
178
179	## OK ash STDOUT:
180	# always-value-unset x init.unset
181	[global] v: global
182	[global,local] v: (unset)
183	[global,local+unset] v: (unset)
184	[global,local+unlocal] v: (unset)
185	[global,tempenv] v: tempenv
186	[global,tempenv,local] v: tempenv
187	[global,tempenv,local+unset] v: (unset)
188	[global,tempenv,local+unlocal] v: (unset)
189	[global,tempenv,(eval)] v: tempenv
190	[global,tempenv,(eval),local] v: (unset)
191	[global,tempenv,(eval),local+unset] v: (unset)
192	[global,tempenv,(eval),local+unlocal] v: (unset)
193	## END
194
195	## OK zsh STDOUT:
196	# always-value-unset x init.empty
197	[global] v: global
198	[global,local] v:
199	[global,local+unset] v: (unset)
200	[global,local+unlocal] v: (unset)
201	[global,tempenv] v: tempenv
202	[global,tempenv,local] v:
203	[global,tempenv,local+unset] v: (unset)
204	[global,tempenv,local+unlocal] v: (unset)
205	[global,tempenv,(eval)] v: tempenv
206	[global,tempenv,(eval),local] v:
207	[global,tempenv,(eval),local+unset] v: (unset)
208	[global,tempenv,(eval),local+unlocal] v: (unset)
209	## END
210
211	## OK dash STDOUT:
212	# always-value-unset x init.inherit
213	[global] v: global
214	[global,local] v: global
215	[global,local+unset] v: (unset)
216	[global,local+unlocal] v: (unset)
217	[global,tempenv] v: tempenv
218	[global,tempenv,local] v: tempenv
219	[global,tempenv,local+unset] v: (unset)
220	[global,tempenv,local+unlocal] v: (unset)
221	[global,tempenv,(eval)] v: tempenv
222	[global,tempenv,(eval),local] v: tempenv
223	[global,tempenv,(eval),local+unset] v: (unset)
224	[global,tempenv,(eval),local+unlocal] v: (unset)
225	## END
226
227	## OK osh/yash/mksh STDOUT:
228	# always-cell-unset x init.unset
229	[global] v: global
230	[global,local] v: (unset)
231	[global,local+unset] v: global
232	[global,local+unlocal] v: global
233	[global,tempenv] v: tempenv
234	[global,tempenv,local] v: (unset)
235	[global,tempenv,local+unset] v: tempenv
236	[global,tempenv,local+unlocal] v: tempenv
237	[global,tempenv,(eval)] v: tempenv
238	[global,tempenv,(eval),local] v: (unset)
239	[global,tempenv,(eval),local+unset] v: tempenv
240	[global,tempenv,(eval),local+unlocal] v: tempenv
241	## END
242
243
244	#### [bash_unset] localvar-inherit from tempenv
245	f1() {
246	local v
247	echo "[$1,(local)] v: ${v-(unset)}"
248	}
249	f2() {
250	f1 "$1,(func)"
251	}
252	f3() {
253	local v=local
254	f1 "$1,local,(func)"
255	}
256	v=global
257
258	f1 'global'
259	v=tempenv f1 'global,tempenv'
260	(export v=global; f1 'xglobal')
261
262	f2 'global'
263	v=tempenv f2 'global,tempenv'
264	(export v=global; f2 'xglobal')
265
266	f3 'global'
267
268	## STDOUT:
269	# init.bash
270	# init.unset for local
271	# init.inherit for tempenv
272	[global,(local)] v: (unset)
273	[global,tempenv,(local)] v: tempenv
274	[xglobal,(local)] v: (unset)
275	[global,(func),(local)] v: (unset)
276	[global,tempenv,(func),(local)] v: tempenv
277	[xglobal,(func),(local)] v: (unset)
278	[global,local,(func),(local)] v: (unset)
279	## END
280
281	## OK osh/mksh/yash STDOUT:
282	# init.unset
283	[global,(local)] v: (unset)
284	[global,tempenv,(local)] v: (unset)
285	[xglobal,(local)] v: (unset)
286	[global,(func),(local)] v: (unset)
287	[global,tempenv,(func),(local)] v: (unset)
288	[xglobal,(func),(local)] v: (unset)
289	[global,local,(func),(local)] v: (unset)
290	## END
291
292	## OK ash STDOUT:
293	# init.unset x tempenv-in-localctx
294	[global,(local)] v: (unset)
295	[global,tempenv,(local)] v: tempenv
296	[xglobal,(local)] v: (unset)
297	[global,(func),(local)] v: (unset)
298	[global,tempenv,(func),(local)] v: (unset)
299	[xglobal,(func),(local)] v: (unset)
300	[global,local,(func),(local)] v: (unset)
301	## END
302
303	## OK zsh STDOUT:
304	# init.empty
305	[global,(local)] v:
306	[global,tempenv,(local)] v:
307	[xglobal,(local)] v:
308	[global,(func),(local)] v:
309	[global,tempenv,(func),(local)] v:
310	[xglobal,(func),(local)] v:
311	[global,local,(func),(local)] v:
312	## END
313
314	## OK dash STDOUT:
315	# init.inherit
316	[global,(local)] v: global
317	[global,tempenv,(local)] v: tempenv
318	[xglobal,(local)] v: global
319	[global,(func),(local)] v: global
320	[global,tempenv,(func),(local)] v: tempenv
321	[xglobal,(func),(local)] v: global
322	[global,local,(func),(local)] v: local
323	## END
324
325
326	#### [bash_unset] nested context by tempenv-eval
327	f1() {
328	local v=local1
329	echo "[$1,local1] v: ${v-(unset)}"
330	v=tempenv2 eval '
331	echo "[$1,local1,tempenv2,(eval)] v: ${v-(unset)}"
332	local v=local2
333	echo "[$1,local1,tempenv2,(eval),local2] v: ${v-(unset)}"
334	'
335	echo "[$1,local1] v: ${v-(unset)} (after)"
336	}
337	v=global
338	v=tempenv1 f1 global,tempenv1
339
340	## STDOUT:
341	# localvar-nest yes
342	[global,tempenv1,local1] v: local1
343	[global,tempenv1,local1,tempenv2,(eval)] v: tempenv2
344	[global,tempenv1,local1,tempenv2,(eval),local2] v: local2
345	[global,tempenv1,local1] v: local1 (after)
346	## END
347
348	## OK mksh/ash/dash/yash STDOUT:
349	# localvar-nest no
350	[global,tempenv1,local1] v: local1
351	[global,tempenv1,local1,tempenv2,(eval)] v: tempenv2
352	[global,tempenv1,local1,tempenv2,(eval),local2] v: local2
353	[global,tempenv1,local1] v: local2 (after)
354	## END
355
356	#### [bash_unset] local-unset / dynamic-unset for localvar on nested-context
357	unlocal() { unset -v "$1"; }
358
359	f2() {
360	local v=local1
361	v=tempenv2 eval '
362	local v=local2
363	(unset v ; echo "[$1,local1,tempenv2,(eval),local2,(unset)] v: ${v-(unset)}")
364	(unlocal v; echo "[$1,local1,tempenv2,(eval),local2,(unlocal)] v: ${v-(unset)}")
365	'
366	}
367	v=global
368	v=tempenv1 f2 global,tempenv1
369
370	## STDOUT:
371	# bash-unset (bash-5.1)
372	[global,tempenv1,local1,tempenv2,(eval),local2,(unset)] v: (unset)
373	[global,tempenv1,local1,tempenv2,(eval),local2,(unlocal)] v: local1
374	## END
375
376	## BUG bash STDOUT:
377	# bash-unset (bash-4.3..5.0 bug)
378	[global,tempenv1,local1,tempenv2,(eval),local2,(unset)] v: local1
379	[global,tempenv1,local1,tempenv2,(eval),local2,(unlocal)] v: local1
380	## END
381
382	## OK zsh/ash/dash STDOUT:
383	# always-value-unset
384	[global,tempenv1,local1,tempenv2,(eval),local2,(unset)] v: (unset)
385	[global,tempenv1,local1,tempenv2,(eval),local2,(unlocal)] v: (unset)
386	## END
387
388	## OK osh STDOUT:
389	# always-cell-unset x localvar-tempenv-share
390	[global,tempenv1,local1,tempenv2,(eval),local2,(unset)] v: local1
391	[global,tempenv1,local1,tempenv2,(eval),local2,(unlocal)] v: local1
392	## END
393
394	## OK mksh/yash STDOUT:
395	# always-cell-unset (remove all localvar/tempenv)
396	[global,tempenv1,local1,tempenv2,(eval),local2,(unset)] v: tempenv1
397	[global,tempenv1,local1,tempenv2,(eval),local2,(unlocal)] v: tempenv1
398	## END
399
400	#### [bash_unset] dynamic-unset for nested localvars
401	unlocal() { unset -v "$1"; }
402
403	f3() {
404	local v=local1
405	v=tempenv2 eval '
406	local v=local2
407	v=tempenv3 eval "
408	local v=local3
409	echo \"[\$1/local1,tempenv2/local2,tempenv3/local3] v: \${v-(unset)}\"
410	unlocal v
411	echo \"[\$1/local1,tempenv2/local2,tempenv3/local3] v: \${v-(unset)} (unlocal 1)\"
412	unlocal v
413	echo \"[\$1/local1,tempenv2/local2,tempenv3/local3] v: \${v-(unset)} (unlocal 2)\"
414	unlocal v
415	echo \"[\$1/local1,tempenv2/local2,tempenv3/local3] v: \${v-(unset)} (unlocal 3)\"
416	unlocal v
417	echo \"[\$1/local1,tempenv2/local2,tempenv3/local3] v: \${v-(unset)} (unlocal 4)\"
418	"
419	'
420	}
421	v=global
422	v=tempenv1 f3 global,tempenv1
423
424	## STDOUT:
425	# cell-unset x localvar-tempenv-share x tempenv-in-localctx
426	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: local3
427	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: local2 (unlocal 1)
428	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: local1 (unlocal 2)
429	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: global (unlocal 3)
430	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: (unset) (unlocal 4)
431	## END
432
433	## OK zsh/ash/dash STDOUT:
434	# value-unset
435	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: local3
436	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: (unset) (unlocal 1)
437	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: (unset) (unlocal 2)
438	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: (unset) (unlocal 3)
439	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: (unset) (unlocal 4)
440	## END
441
442	## OK osh STDOUT:
443	# cell-unset x localvar-tempenv-share
444	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: local3
445	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: local2 (unlocal 1)
446	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: local1 (unlocal 2)
447	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: tempenv1 (unlocal 3)
448	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: global (unlocal 4)
449	## END
450
451	## OK yash STDOUT:
452	# cell-unset (remove all localvar)
453	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: local3
454	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: tempenv1 (unlocal 1)
455	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: global (unlocal 2)
456	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: (unset) (unlocal 3)
457	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: (unset) (unlocal 4)
458	## END
459
460	## OK mksh STDOUT:
461	# cell-unset (remove all localvar/tempenv) x tempenv-value-unset
462	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: local3
463	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: tempenv1 (unlocal 1)
464	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: (unset) (unlocal 2)
465	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: (unset) (unlocal 3)
466	[global,tempenv1/local1,tempenv2/local2,tempenv3/local3] v: (unset) (unlocal 4)
467	## END
468
469
470	#### [bash_unset] dynamic-unset for nested tempenvs
471	unlocal() { unset -v "$1"; }
472
473	f4_unlocal() {
474	v=tempenv2 eval '
475	v=tempenv3 eval "
476	echo \"[\$1,tempenv2,tempenv3] v: \${v-(unset)}\"
477	unlocal v
478	echo \"[\$1,tempenv2,tempenv3] v: \${v-(unset)} (unlocal 1)\"
479	unlocal v
480	echo \"[\$1,tempenv2,tempenv3] v: \${v-(unset)} (unlocal 2)\"
481	unlocal v
482	echo \"[\$1,tempenv2,tempenv3] v: \${v-(unset)} (unlocal 3)\"
483	unlocal v
484	echo \"[\$1,tempenv2,tempenv3] v: \${v-(unset)} (unlocal 4)\"
485	"
486	'
487	}
488	v=global
489	v=tempenv1 f4_unlocal global,tempenv1
490
491	## STDOUT:
492	[global,tempenv1,tempenv2,tempenv3] v: tempenv3
493	[global,tempenv1,tempenv2,tempenv3] v: tempenv2 (unlocal 1)
494	[global,tempenv1,tempenv2,tempenv3] v: tempenv1 (unlocal 2)
495	[global,tempenv1,tempenv2,tempenv3] v: global (unlocal 3)
496	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unlocal 4)
497	## END
498
499	## OK zsh/ash/dash/mksh STDOUT:
500	# value-unset, mksh-unset
501	[global,tempenv1,tempenv2,tempenv3] v: tempenv3
502	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unlocal 1)
503	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unlocal 2)
504	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unlocal 3)
505	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unlocal 4)
506	## END
507
508	## OK osh STDOUT:
509	# cell-unset
510	[global,tempenv1,tempenv2,tempenv3] v: tempenv3
511	[global,tempenv1,tempenv2,tempenv3] v: tempenv2 (unlocal 1)
512	[global,tempenv1,tempenv2,tempenv3] v: tempenv1 (unlocal 2)
513	[global,tempenv1,tempenv2,tempenv3] v: global (unlocal 3)
514	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unlocal 4)
515	## END
516
517	## OK yash STDOUT:
518	# remove all tempenv3
519	[global,tempenv1,tempenv2,tempenv3] v: tempenv3
520	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unlocal 1)
521	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unlocal 2)
522	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unlocal 3)
523	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unlocal 4)
524	## END
525
526	#### [bash_unset] local-unset for nested tempenvs
527	f4_unset() {
528	v=tempenv2 eval '
529	v=tempenv3 eval "
530	echo \"[\$1,tempenv2,tempenv3] v: \${v-(unset)}\"
531	unset v
532	echo \"[\$1,tempenv2,tempenv3] v: \${v-(unset)} (unset 1)\"
533	unset v
534	echo \"[\$1,tempenv2,tempenv3] v: \${v-(unset)} (unset 2)\"
535	unset v
536	echo \"[\$1,tempenv2,tempenv3] v: \${v-(unset)} (unset 3)\"
537	unset v
538	echo \"[\$1,tempenv2,tempenv3] v: \${v-(unset)} (unset 4)\"
539	"
540	'
541	}
542	v=global
543	v=tempenv1 f4_unset global,tempenv1
544
545	## STDOUT:
546	[global,tempenv1,tempenv2,tempenv3] v: tempenv3
547	[global,tempenv1,tempenv2,tempenv3] v: tempenv2 (unset 1)
548	[global,tempenv1,tempenv2,tempenv3] v: tempenv1 (unset 2)
549	[global,tempenv1,tempenv2,tempenv3] v: global (unset 3)
550	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unset 4)
551	## END
552
553	## OK zsh/ash/dash/mksh/yash STDOUT:
554	# value-unset, mksh-unset, tempenv-value-unset?
555	[global,tempenv1,tempenv2,tempenv3] v: tempenv3
556	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unset 1)
557	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unset 2)
558	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unset 3)
559	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unset 4)
560	## END
561
562	## OK osh STDOUT:
563	# cell-unset
564	[global,tempenv1,tempenv2,tempenv3] v: tempenv3
565	[global,tempenv1,tempenv2,tempenv3] v: tempenv2 (unset 1)
566	[global,tempenv1,tempenv2,tempenv3] v: tempenv1 (unset 2)
567	[global,tempenv1,tempenv2,tempenv3] v: global (unset 3)
568	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unset 4)
569	## END
570
571	## BUG yash STDOUT:
572	# value-unset? inconsistent with other test cases
573	[global,tempenv1,tempenv2,tempenv3] v: tempenv3
574	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unset 1)
575	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unset 2)
576	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unset 3)
577	[global,tempenv1,tempenv2,tempenv3] v: (unset) (unset 4)
578	## END
579
580	#### [compat_array] ${arr} is ${arr[0]}
581	case ${SH##*/} in (dash|ash) exit 1;; esac # dash/ash does not have arrays
582	case ${SH##*/} in (osh) shopt -s compat_array;; esac
583	case ${SH##*/} in (zsh) setopt KSH_ARRAYS;; esac
584	arr=(foo bar baz)
585	argv.py "$arr" "${arr}"
586	## stdout: ['foo', 'foo']
587
588	## N-I dash/ash status: 1
589	## N-I dash/ash stdout-json: ""
590
591	## OK yash stdout: ['foo', 'bar', 'baz', 'foo', 'bar', 'baz']
592
593	#### [compat_array] scalar write to arrays
594	case ${SH##*/} in
595	(dash|ash) exit 1;; # dash/ash does not have arrays
596	(osh) shopt -s compat_array;;
597	(zsh) setopt KSH_ARRAYS;;
598	esac
599
600	a=(1 0 0)
601	: $(( a++ ))
602	argv.py "${a[@]}"
603	## stdout: ['2', '0', '0']
604
605	## N-I dash/ash status: 1
606	## N-I dash/ash stdout-json: ""
607
608	## OK yash STDOUT:
609	# yash does not support scalar access. Instead, it replaces the array
610	# with a scalar.
611	['1']
612	## END
613
614	#### [compat_array] scalar write to associative arrays
615	case ${SH##*/} in
616	(dash|ash|yash|mksh) exit 1;; # dash/ash/yash/mksh does not have associative arrays
617	(osh) shopt -s compat_array;;
618	(zsh) setopt KSH_ARRAYS;;
619	esac
620
621	declare -A d=()
622	d['0']=1
623	d['foo']=hello
624	d['bar']=world
625	((d++))
626	argv.py ${d['0']} ${d['foo']} ${d['bar']}
627	## stdout: ['2', 'hello', 'world']
628
629	## N-I dash/ash/yash/mksh status: 1
630	## N-I dash/ash/yash/mksh stdout-json: ""
631
632	## N-I zsh stdout: ['1', 'hello', 'world']