1	#!/bin/bash
2	#
3	# Test combination of var ops.
4
5	### String length
6	v=foo
7	echo ${#v}
8	# stdout: 3
9
10	### Length of undefined variable
11	echo ${#undef}
12	# stdout: 0
13
14	### Length of undefined variable with nounset
15	set -o nounset
16	echo ${#undef}
17	# status: 1
18	# OK dash status: 2
19
20	### Cannot take length of substring slice
21	# These are runtime errors, but we could make them parse time errors.
22	v=abcde
23	echo ${#v:1:3}
24	# status: 1
25	# N-I dash status: 0
26	# N-I dash stdout: 5
27
28	### Pattern replacement
29	v=abcde
30	echo ${v/c*/XX}
31	# stdout: abXX
32	# N-I dash status: 2
33	# N-I dash stdout-json: ""
34
35	### String slice
36	foo=abcdefg
37	echo ${foo:1:3}
38	# stdout: bcd
39	# N-I dash status: 2
40	# N-I dash stdout-json: ""
41
42	### Negative string slice
43	foo=abcdefg
44	echo ${foo: -4:3}
45	# stdout: def
46	# N-I dash status: 2
47	# N-I dash stdout-json: ""
48
49	### String slice with math
50	# I think this is the $(()) language inside?
51	i=1
52	foo=abcdefg
53	echo ${foo: i-3-2 : i + 2}
54	# stdout: def
55	# N-I dash status: 2
56	# N-I dash stdout-json: ""