1	#!/bin/bash
2
3	# TODO: Need a SETUP section.
4
5	### SETUP
6	a=(1 '2 3')
7
8	### "${a[@]}" and "${a[*]}"
9	a=(1 '2 3')
10	argv.py "${a[@]}" "${a[*]}"
11	# stdout: ['1', '2 3', '1 2 3']
12
13	### ${a[@]} and ${a[*]}
14	a=(1 '2 3')
15	argv.py ${a[@]} ${a[*]}
16	# stdout: ['1', '2', '3', '1', '2', '3']
17
18	### Empty array tests
19	argv.py 1 "${a[@]}" 2 ${a[@]} 3 "${a[*]}" 4 ${a[*]} 5
20	# stdout: ['1', '2', '3', '', '4', '5']
21
22	### local array
23	# mksh support local variables, but not local arrays, oddly.
24	f() {
25	local a=(1 '2 3')
26	argv.py "${a[0]}"
27	}
28	f
29	# stdout: ['1']
30	# status: 0
31	# BUG mksh status: 1
32	# BUG mksh stdout-json: ""
33
34	### Command with with word splitting in array
35	array=('1 2' $(echo '3 4'))
36	argv.py "${array[@]}"
37	# stdout: ['1 2', '3', '4']
38
39	### space before ( in array initialization
40	# NOTE: mksh accepts this, but bash doesn't
41	a= (1 '2 3')
42	echo $a
43	# status: 2
44	# OK mksh status: 0
45	# OK mksh stdout: 1
46
47	### array over multiple lines
48	a=(
49	1
50	'2 3'
51	)
52	argv.py "${a[@]}"
53	# stdout: ['1', '2 3']
54	# status: 0
55
56	### array with invalid token
57	a=(
58	1
59	&
60	'2 3'
61	)
62	argv.py "${a[@]}"
63	# status: 2
64	# OK mksh status: 1
65
66	### empty array
67	empty=()
68	argv.py "${empty[@]}"
69	# stdout: []
70
71	### array with empty string
72	empty=('')
73	argv.py "${empty[@]}"
74	# stdout: ['']
75
76	### Assign to array index without initialization
77	b[2]=9
78	argv.py "${b[@]}"
79	# stdout: ['9']
80
81	### Retrieve index
82	a=(1 '2 3')
83	argv.py "${a[1]}"
84	# stdout: ['2 3']
85
86	### Retrieve out of bounds index
87	a=(1 '2 3')
88	argv.py "${a[3]}"
89	# stdout: ['']
90
91	### Retrieve index that is a variable
92	a=(1 '2 3')
93	i=1
94	argv.py "${a[$i]}"
95	# stdout: ['2 3']
96
97	### Retrieve index that is a variable without $
98	a=(1 '2 3')
99	i=5
100	argv.py "${a[i-4]}"
101	# stdout: ['2 3']
102
103	### Retrieve index that is a command sub
104	a=(1 '2 3')
105	argv.py "${a[$(echo 1)]}"
106	# stdout: ['2 3']
107
108	### Retrieve all indices with !
109	a=(1 '2 3')
110	argv.py "${!a[@]}"
111	# stdout: ['0', '1']
112
113	### Retrieve indices for one value
114	# Not really standardized between bash and mksh. Just doing whatever bash
115	# does.
116	a=(4 '2 3')
117	argv.py "${!a[1]}"
118	# status: 0
119	# stdout: ['']
120	# OK mksh stdout: ['1']
121
122	### Retrieve indices without []
123	# bash gives empty string?
124	# mksh gives the name of the variable with !. Very weird.
125	a=(1 '2 3')
126	argv.py "${!a}"
127	# stdout: ['']
128	# OK mksh stdout: ['a']
129
130	### All elements unquoted
131	a=(1 '2 3')
132	argv.py ${a[@]}
133	# stdout: ['1', '2', '3']
134
135	### All elements quoted
136	a=(1 '2 3')
137	argv.py "${a[@]}"
138	# stdout: ['1', '2 3']
139
140	### $*
141	a=(1 '2 3')
142	argv.py ${a[*]}
143	# stdout: ['1', '2', '3']
144
145	### "$*"
146	a=(1 '2 3')
147	argv.py "${a[*]}"
148	# stdout: ['1 2 3']
149
150	### Interpolate array into array
151	a=(1 '2 3')
152	a=(0 "${a[@]}" '4 5')
153	argv.py "${a[@]}"
154	# stdout: ['0', '1', '2 3', '4 5']
155
156	### Exporting array doesn't do anything, not even first element
157	# bash parses, but doesn't execute.
158	# mksh gives syntax error -- parses differently with 'export'
159	# osh no longer parses this statically.
160	export PYTHONPATH=(a b c)
161	export PYTHONPATH=a # NOTE: in bash, this doesn't work afterward!
162	printenv.py PYTHONPATH
163	# stdout: None
164	# OK mksh stdout-json: ""
165	# OK mksh status: 1
166	# OK osh stdout-json: ""
167	# OK osh status: 2
168
169	### Env with array
170	# Hm it treats it as a string!
171	A=a B=(b b) printenv.py A B
172	# stdout-json: "a\n(b b)\n"
173	# BUG mksh stdout-json: ""
174	# BUG mksh status: 1
175
176	### Set element
177	a=(1 '2 3')
178	a[0]=9
179	argv.py "${a[@]}"
180	# stdout: ['9', '2 3']
181
182	### Set element with var ref
183	a=(1 '2 3')
184	i=0
185	a[$i]=9
186	argv.py "${a[@]}"
187	# stdout: ['9', '2 3']
188
189	### Set element with array ref
190	# This makes parsing a little more complex. Anything can be inside [],
191	# including other [].
192	a=(1 '2 3')
193	i=(0 1)
194	a[${i[1]}]=9
195	argv.py "${a[@]}"
196	# stdout: ['1', '9']
197
198	### Slice of array with [@]
199	# mksh doesn't support this syntax! It's a bash extension.
200	a=(1 2 3)
201	argv.py "${a[@]:1:2}"
202	# stdout: ['2', '3']
203	# N-I mksh status: 1
204	# N-I mksh stdout-json: ""
205
206	### Negative slice
207	# mksh doesn't support this syntax! It's a bash extension.
208	# NOTE: for some reason -2) has to be in parens? Ah that's because it
209	# conflicts with :-! That's silly. You can also add a space.
210	a=(1 2 3)
211	argv.py "${a[@]:(-2):1}"
212	# stdout: ['2']
213	# N-I mksh status: 1
214	# N-I mksh stdout-json: ""
215
216	### Slice with arithmetic
217	a=(1 2 3)
218	i=5
219	argv.py "${a[@]:i-4:2}"
220	# stdout: ['2', '3']
221	# N-I mksh status: 1
222	# N-I mksh stdout-json: ""
223
224	### Number of elements
225	a=(1 '2 3')
226	echo "${#a[@]}"
227	# stdout: 2
228
229	### Length of an element
230	a=(1 '2 3')
231	echo "${#a[1]}"
232	# stdout: 3
233
234	### Iteration
235	a=(1 '2 3')
236	for v in "${a[@]}"; do
237	echo $v
238	done
239	# stdout-json: "1\n2 3\n"
240
241	### glob within array yields separate elements
242	touch _tmp/y.Y _tmp/yy.Y
243	a=(_tmp/*.Y)
244	argv.py "${a[@]}"
245	# stdout: ['_tmp/y.Y', '_tmp/yy.Y']
246
247	### declare array and then append
248	declare -a array
249	array+=(a)
250	array+=(b c)
251	argv.py "${array[@]}"
252	# stdout: ['a', 'b', 'c']
253
254	### Array syntax in wrong place
255	ls foo=(1 2)
256	# status: 2
257	# OK mksh status: 1
258
259	### Empty array with :-
260	empty=()
261	argv.py ${empty[@]:-not one} "${empty[@]:-not one}"
262	# stdout: ['not', 'one', 'not one']
263
264	### Single array with :-
265	# bash does EMPTY ELISION here, unless it's double quoted. mksh has
266	# more sane behavior. OSH is better.
267	single=('')
268	argv.py ${single[@]:-none} x "${single[@]:-none}"
269	# OK osh stdout: ['x', '']
270	# OK bash stdout: ['none', 'x', '']
271	# OK mksh stdout: ['none', 'x', 'none']
272
273	### Stripping a whole array unquoted
274	# Problem: it joins it first.
275	files=('foo.c' 'sp ace.h' 'bar.c')
276	argv.py ${files[@]%.c}
277	# stdout: ['foo', 'sp', 'ace.h', 'bar']
278	# N-I mksh stdout-json: ""
279
280	### Stripping a whole array quoted
281	files=('foo.c' 'sp ace.h' 'bar.c')
282	argv.py "${files[@]%.c}"
283	# stdout: ['foo', 'sp ace.h', 'bar']
284	# N-I mksh stdout-json: ""
285
286	### Multiple subscripts not allowed
287	a=('123' '456')
288	argv.py "${a[0]}" "${a[0][0]}"
289	# stdout-json: ""
290	# status: 2
291	# OK mksh status: 1
292	# bash is bad -- it IGNORES the bad subscript.
293	# BUG bash status: 0
294	# BUG bash stdout: ['123', '123']
295
296	### Length op, index op, then transform op is not allowed
297	a=('123' '456')
298	echo "${#a[0]}" "${#a[0]/1/xxx}"
299	# stdout-json: ""
300	# status: 2
301	# OK mksh status: 1
302	# bash is bad -- it IGNORES the op at the end
303	# BUG bash status: 0
304	# BUG bash stdout: 3 3
305
306	### Array subscript not allowed on string
307	s='abc'
308	echo ${s[@]}
309	# BUG bash/mksh status: 0
310	# BUG bash/mksh stdout: abc
311	# status: 1
312
313	### Create a "user" array out of the argv array
314	set -- 'a b' 'c'
315	array1=('x y' 'z')
316	array2=("$@")
317	argv.py "${array1[@]}" "${array2[@]}"
318	# stdout: ['x y', 'z', 'a b', 'c']
319
320	### Tilde expansion within array
321	HOME=/home/bob
322	a=(~/src ~/git)
323	echo "${a[@]}"
324	# stdout: /home/bob/src /home/bob/git
325
326	### Brace Expansion within Array
327	a=(-{a,b} {c,d}-)
328	echo "${a[@]}"
329	# stdout: -a -b c- d-
330
331	### array default
332	default=('1 2' '3')
333	argv.py "${undef[@]:-${default[@]}}"
334	# stdout: ['1 2', '3']
335