1
2	#### K and V are variables in (( array[K] = V ))
3	K=5
4	V=42
5	typeset -a array
6	(( array[K] = V ))
7
8	echo array[5]=${array[5]}
9	echo keys = ${!array[@]}
10	echo values = ${array[@]}
11	## STDOUT:
12	array[5]=42
13	keys = 5
14	values = 42
15	## END
16
17	#### when are variables set with 'test -v'
18	test -v unset
19	echo unset=$?
20
21	typeset -a a
22	test -v a
23	echo a=$?
24
25	typeset -A A
26	test -v A
27	echo A=$?
28
29	a[0]=1
30	A['x']=x
31
32	test -v a
33	echo a=$?
34
35	# NOTE: This is a BUG! A is set
36	test -v A
37	echo A=$?
38
39	## STDOUT:
40	unset=1
41	a=1
42	A=1
43	a=0
44	A=0
45	## END
46	## BUG bash STDOUT:
47	unset=1
48	a=1
49	A=1
50	a=0
51	A=1
52	## END
53	## N-I mksh STDOUT:
54	unset=2
55	a=2
56	A=2
57	a=2
58	A=2
59	## END