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 "${empty[@]}"
74	# stdout: ['']
75
76	### Retrieve index
77	a=(1 '2 3')
78	argv.py "${a[1]}"
79	# stdout: ['2 3']
80
81	### Retrieve out of bounds index
82	a=(1 '2 3')
83	argv.py "${a[3]}"
84	# stdout: ['']
85
86	### Retrieve index that is a variable
87	a=(1 '2 3')
88	i=1
89	argv.py "${a[$i]}"
90	# stdout: ['2 3']
91
92	### Retrieve index that is a variable without $
93	a=(1 '2 3')
94	i=5
95	argv.py "${a[i-4]}"
96	# stdout: ['2 3']
97
98	### Retrieve index that is a command sub
99	a=(1 '2 3')
100	argv.py "${a[$(echo 1)]}"
101	# stdout: ['2 3']
102
103	### Retrieve all indices with !
104	a=(1 '2 3')
105	argv.py "${!a[@]}"
106	# stdout: ['0', '1']
107
108	### ${!a[1]} is named ref in bash
109	# mksh ignores it
110	foo=bar
111	a=('1 2' foo '2 3')
112	argv.py "${!a[1]}"
113	# status: 0
114	# stdout: ['bar']
115	# N-I mksh stdout: ['a[1]']
116
117	### Retrieve indices without []
118	# bash gives empty string?
119	# mksh gives the name of the variable with !. Very weird.
120	a=(1 '2 3')
121	argv.py "${!a}"
122	# stdout: ['']
123	# OK mksh stdout: ['a']
124
125	### All elements unquoted
126	a=(1 '2 3')
127	argv.py ${a[@]}
128	# stdout: ['1', '2', '3']
129
130	### All elements quoted
131	a=(1 '2 3')
132	argv.py "${a[@]}"
133	# stdout: ['1', '2 3']
134
135	### $*
136	a=(1 '2 3')
137	argv.py ${a[*]}
138	# stdout: ['1', '2', '3']
139
140	### "$*"
141	a=(1 '2 3')
142	argv.py "${a[*]}"
143	# stdout: ['1 2 3']
144
145	### Interpolate array into array
146	a=(1 '2 3')
147	a=(0 "${a[@]}" '4 5')
148	argv.py "${a[@]}"
149	# stdout: ['0', '1', '2 3', '4 5']
150
151	### Exporting array doesn't do anything, not even first element
152	# bash parses, but doesn't execute.
153	# mksh gives syntax error -- parses differently with 'export'
154	# osh no longer parses this statically.
155	export PYTHONPATH=(a b c)
156	export PYTHONPATH=a # NOTE: in bash, this doesn't work afterward!
157	printenv.py PYTHONPATH
158	# stdout: None
159	# OK mksh stdout-json: ""
160	# OK mksh status: 1
161	# OK osh stdout-json: ""
162	# OK osh status: 2
163
164	### Env with array
165	# Hm it treats it as a string!
166	A=a B=(b b) printenv.py A B
167	# stdout-json: "a\n(b b)\n"
168	# BUG mksh stdout-json: ""
169	# BUG mksh status: 1
170
171	### Set element
172	a=(1 '2 3')
173	a[0]=9
174	argv.py "${a[@]}"
175	# stdout: ['9', '2 3']
176
177	### Set element with var ref
178	a=(1 '2 3')
179	i=0
180	a[$i]=9
181	argv.py "${a[@]}"
182	# stdout: ['9', '2 3']
183
184	### Set element with array ref
185	# This makes parsing a little more complex. Anything can be inside [],
186	# including other [].
187	a=(1 '2 3')
188	i=(0 1)
189	a[${i[1]}]=9
190	argv.py "${a[@]}"
191	# stdout: ['1', '9']
192
193	### Set array item to array
194	a=(1 2)
195	a[0]=(3 4)
196	echo "status=$?"
197	# stdout: status=1
198	# status: 0
199	# N-I mksh stdout-json: ""
200	# N-I mksh status: 1
201
202	### Slice of array with [@]
203	# mksh doesn't support this syntax! It's a bash extension.
204	a=(1 2 3)
205	argv.py "${a[@]:1:2}"
206	# stdout: ['2', '3']
207	# N-I mksh status: 1
208	# N-I mksh stdout-json: ""
209
210	### Negative slice
211	# mksh doesn't support this syntax! It's a bash extension.
212	# NOTE: for some reason -2) has to be in parens? Ah that's because it
213	# conflicts with :-! That's silly. You can also add a space.
214	a=(1 2 3)
215	argv.py "${a[@]:(-2):1}"
216	# stdout: ['2']
217	# N-I mksh status: 1
218	# N-I mksh stdout-json: ""
219
220	### Slice with arithmetic
221	a=(1 2 3)
222	i=5
223	argv.py "${a[@]:i-4:2}"
224	# stdout: ['2', '3']
225	# N-I mksh status: 1
226	# N-I mksh stdout-json: ""
227
228	### Number of elements
229	a=(1 '2 3')
230	echo "${#a[@]}"
231	# stdout: 2
232
233	### Length of an element
234	a=(1 '2 3')
235	echo "${#a[1]}"
236	# stdout: 3
237
238	### Iteration
239	a=(1 '2 3')
240	for v in "${a[@]}"; do
241	echo $v
242	done
243	# stdout-json: "1\n2 3\n"
244
245	### glob within array yields separate elements
246	touch _tmp/y.Y _tmp/yy.Y
247	a=(_tmp/*.Y)
248	argv.py "${a[@]}"
249	# stdout: ['_tmp/y.Y', '_tmp/yy.Y']
250
251	### declare array and then append
252	declare -a array
253	array+=(a)
254	array+=(b c)
255	argv.py "${array[@]}"
256	# stdout: ['a', 'b', 'c']
257
258	### Array syntax in wrong place
259	ls foo=(1 2)
260	# status: 2
261	# OK mksh status: 1
262
263	### Empty array with :-
264	empty=()
265	argv.py ${empty[@]:-not one} "${empty[@]:-not one}"
266	# stdout: ['not', 'one', 'not one']
267
268	### Single array with :-
269	# bash does EMPTY ELISION here, unless it's double quoted. mksh has
270	# more sane behavior. OSH is better.
271	single=('')
272	argv.py ${single[@]:-none} x "${single[@]:-none}"
273	# OK osh stdout: ['x', '']
274	# OK bash stdout: ['none', 'x', '']
275	# OK mksh stdout: ['none', 'x', 'none']
276
277	### Stripping a whole array unquoted
278	# Problem: it joins it first.
279	files=('foo.c' 'sp ace.h' 'bar.c')
280	argv.py ${files[@]%.c}
281	# status: 0
282	# stdout: ['foo', 'sp', 'ace.h', 'bar']
283	# N-I mksh status: 1
284	# N-I mksh stdout-json: ""
285
286	### Stripping a whole array quoted
287	files=('foo.c' 'sp ace.h' 'bar.c')
288	argv.py "${files[@]%.c}"
289	# status: 0
290	# stdout: ['foo', 'sp ace.h', 'bar']
291	# N-I mksh status: 1
292	# N-I mksh stdout-json: ""
293
294	### Multiple subscripts not allowed
295	a=('123' '456')
296	argv.py "${a[0]}" "${a[0][0]}"
297	# stdout-json: ""
298	# status: 2
299	# OK mksh status: 1
300	# bash is bad -- it IGNORES the bad subscript.
301	# BUG bash status: 0
302	# BUG bash stdout: ['123', '123']
303
304	### Length op, index op, then transform op is not allowed
305	a=('123' '456')
306	echo "${#a[0]}" "${#a[0]/1/xxx}"
307	# stdout-json: ""
308	# status: 2
309	# OK mksh status: 1
310	# bash is bad -- it IGNORES the op at the end
311	# BUG bash status: 0
312	# BUG bash stdout: 3 3
313
314	### Array subscript not allowed on string
315	s='abc'
316	echo ${s[@]}
317	# BUG bash/mksh status: 0
318	# BUG bash/mksh stdout: abc
319	# status: 1
320
321	### Create a "user" array out of the argv array
322	set -- 'a b' 'c'
323	array1=('x y' 'z')
324	array2=("$@")
325	argv.py "${array1[@]}" "${array2[@]}"
326	# stdout: ['x y', 'z', 'a b', 'c']
327
328	### Tilde expansion within array
329	HOME=/home/bob
330	a=(~/src ~/git)
331	echo "${a[@]}"
332	# stdout: /home/bob/src /home/bob/git
333
334	### Brace Expansion within Array
335	a=(-{a,b} {c,d}-)
336	echo "${a[@]}"
337	# stdout: -a -b c- d-
338
339	### array default
340	default=('1 2' '3')
341	argv.py "${undef[@]:-${default[@]}}"
342	# stdout: ['1 2', '3']
343