1	#!/usr/bin/env bash
2	#
3	# Test the length oeprator, which dash supports. Dash doesn't support most
4	# other ops.
5
6	#### String length
7	v=foo
8	echo ${#v}
9	## stdout: 3
10
11	#### Unicode string length (UTF-8)
12	v=$'_\u03bc_'
13	echo ${#v}
14	## stdout: 3
15	## N-I dash stdout: 9
16	## N-I mksh stdout: 4
17
18	#### Unicode string length (spec/testdata/utf8-chars.txt)
19	v=$(cat spec/testdata/utf8-chars.txt)
20	echo ${#v}
21	## stdout: 7
22	## N-I dash stdout: 13
23	## N-I mksh stdout: 13
24
25	#### String length with incomplete utf-8
26	for num_bytes in 0 1 2 3 4 5 6 7 8 9 10 11 12 13; do
27	s=$(head -c $num_bytes spec/testdata/utf8-chars.txt)
28	echo ${#s}
29	done
30	## STDOUT:
31	0
32	1
33	2
34	-1
35	3
36	4
37	-1
38	-1
39	5
40	6
41	-1
42	-1
43	-1
44	7
45	## END
46	## STDERR:
47	osh warning: Incomplete UTF-8 character
48	osh warning: Incomplete UTF-8 character
49	osh warning: Incomplete UTF-8 character
50	osh warning: Incomplete UTF-8 character
51	osh warning: Incomplete UTF-8 character
52	osh warning: Incomplete UTF-8 character
53	## END
54	# zsh behavior actually matches bash!
55	## BUG bash/zsh stderr-json: ""
56	## BUG bash/zsh STDOUT:
57	0
58	1
59	2
60	3
61	3
62	4
63	5
64	6
65	5
66	6
67	7
68	8
69	9
70	7
71	## END
72	## BUG dash/mksh stderr-json: ""
73	## N-I dash/mksh STDOUT:
74	0
75	1
76	2
77	3
78	4
79	5
80	6
81	7
82	8
83	9
84	10
85	11
86	12
87	13
88	## END
89
90	#### String length with invalid utf-8 continuation bytes
91	for num_bytes in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14; do
92	s=$(head -c $num_bytes spec/testdata/utf8-chars.txt)$(echo -e "\xFF")
93	echo ${#s}
94	done
95	## STDOUT:
96	-1
97	-1
98	-1
99	-1
100	-1
101	-1
102	-1
103	-1
104	-1
105	-1
106	-1
107	-1
108	-1
109	-1
110	-1
111	## END
112	## STDERR:
113	osh warning: Invalid start of UTF-8 character
114	osh warning: Invalid start of UTF-8 character
115	osh warning: Invalid start of UTF-8 character
116	osh warning: Invalid UTF-8 continuation byte
117	osh warning: Invalid start of UTF-8 character
118	osh warning: Invalid start of UTF-8 character
119	osh warning: Invalid UTF-8 continuation byte
120	osh warning: Invalid UTF-8 continuation byte
121	osh warning: Invalid start of UTF-8 character
122	osh warning: Invalid start of UTF-8 character
123	osh warning: Invalid UTF-8 continuation byte
124	osh warning: Invalid UTF-8 continuation byte
125	osh warning: Invalid UTF-8 continuation byte
126	osh warning: Invalid start of UTF-8 character
127	osh warning: Invalid start of UTF-8 character
128	## END
129	## BUG bash/zsh stderr-json: ""
130	## BUG bash/zsh STDOUT:
131	1
132	2
133	3
134	4
135	4
136	5
137	6
138	7
139	6
140	7
141	8
142	9
143	10
144	8
145	8
146	## N-I dash stderr-json: ""
147	## N-I dash STDOUT:
148	7
149	8
150	9
151	10
152	11
153	12
154	13
155	14
156	15
157	16
158	17
159	18
160	19
161	20
162	20
163	## END
164	## N-I mksh stderr-json: ""
165	## N-I mksh STDOUT:
166	1
167	2
168	3
169	4
170	5
171	6
172	7
173	8
174	9
175	10
176	11
177	12
178	13
179	14
180	14
181	## END
182
183	#### Length of undefined variable
184	echo ${#undef}
185	## stdout: 0
186
187	#### Length of undefined variable with nounset
188	set -o nounset
189	echo ${#undef}
190	## status: 1
191	## OK dash status: 2
192