1	#
2	# Tests for bash's type flags on cells. Hopefully we don't have to implement
3	# this, but it's good to know the behavior.
4	#
5	# OSH follows a Python-ish model of types carried with values/objects, not
6	# locations.
7	#
8	# See https://github.com/oilshell/oil/issues/26
9
10	#### declare -i with +=
11	declare s
12	s='1 '
13	s+=' 2 ' # string append
14
15	declare -i i
16	i='1 '
17	i+=' 2 ' # arith add
18
19	declare -i j
20	j=x # treated like zero
21	j+=' 2 ' # arith add
22
23	echo "[$s]"
24	echo [$i]
25	echo [$j]
26	## STDOUT:
27	[1 2 ]
28	[3]
29	[2]
30	## END
31	## N-I osh STDOUT:
32	[1 2 ]
33	[1 2 ]
34	[x 2 ]
35	## END
36
37	#### declare -i with arithmetic inside strings (Nix, issue 864)
38
39	# example
40	# https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L379
41
42	declare -i s
43	s='1 + 2'
44	echo s=$s
45
46	declare -a array=(1 2 3)
47	declare -i item
48	item='array[1+1]'
49	echo item=$item
50
51	## STDOUT:
52	s=3
53	item=3
54	## END
55	## N-I osh STDOUT:
56	s=1 + 2
57	item=array[1+1]
58	## END
59
60	#### append in arith context
61	declare s
62	(( s='1 '))
63	(( s+=' 2 ')) # arith add
64	declare -i i
65	(( i='1 ' ))
66	(( i+=' 2 ' ))
67	declare -i j
68	(( j='x ' )) # treated like zero
69	(( j+=' 2 ' ))
70	echo "$s|$i|$j"
71	## STDOUT:
72	3|3|2
73	## END
74
75	#### declare array vs. string: mixing -a +a and () ''
76	# dynamic parsing of first argument.
77	declare +a 'xyz1=1'
78	declare +a 'xyz2=(2 3)'
79	declare -a 'xyz3=4'
80	declare -a 'xyz4=(5 6)'
81	argv.py "${xyz1}" "${xyz2}" "${xyz3[@]}" "${xyz4[@]}"
82	## STDOUT:
83	['1', '(2 3)', '4', '5', '6']
84	## END
85	## N-I osh STDOUT:
86	['', '']
87	## END
88
89
90	#### declare array vs. associative array
91	# Hm I don't understand why the array only has one element. I guess because
92	# index 0 is used twice?
93	declare -a 'array=([a]=b [c]=d)'
94	declare -A 'assoc=([a]=b [c]=d)'
95	argv.py "${#array[@]}" "${!array[@]}" "${array[@]}"
96	argv.py "${#assoc[@]}" "${!assoc[@]}" "${assoc[@]}"
97	## STDOUT:
98	['1', '0', 'd']
99	['2', 'a', 'c', 'b', 'd']
100	## END
101	## N-I osh STDOUT:
102	['0']
103	['0']
104	## END