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
11	declare s
12	s='1 '
13	s+=' 2 ' # string append
14	declare -i i
15	i='1 '
16	i+=' 2 ' # arith add
17	declare -i j
18	j=x # treated like zero
19	j+=' 2 ' # arith add
20	echo "$s|$i|$j"
21	## stdout: 1 2 |3|2
22
23	#### append in arith context
24	declare s
25	(( s='1 '))
26	(( s+=' 2 ')) # arith add
27	declare -i i
28	(( i='1 ' ))
29	(( i+=' 2 ' ))
30	declare -i j
31	(( j='x ' )) # treated like zero
32	(( j+=' 2 ' ))
33	echo "$s|$i|$j"
34	## stdout: 3|3|2
35
36	#### declare array vs. string: mixing -a +a and () ''
37	# dynamic parsing of first argument.
38	declare +a 'xyz1=1'
39	declare +a 'xyz2=(2 3)'
40	declare -a 'xyz3=4'
41	declare -a 'xyz4=(5 6)'
42	argv.py "${xyz1}" "${xyz2}" "${xyz3[@]}" "${xyz4[@]}"
43	## stdout: ['1', '(2 3)', '4', '5', '6']
44
45	#### declare array vs. associative array
46	# Hm I don't understand why the array only has one element. I guess because
47	# index 0 is used twice?
48	declare -a 'array=([a]=b [c]=d)'
49	declare -A 'assoc=([a]=b [c]=d)'
50	argv.py "${#array[@]}" "${!array[@]}" "${array[@]}"
51	argv.py "${#assoc[@]}" "${!assoc[@]}" "${assoc[@]}"
52	## stdout-json: "['1', '0', 'd']\n['2', 'a', 'c', 'b', 'd']\n"