1	#!/usr/bin/env 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 "${a[3]}"
84	# stdout: ['']
85
86	### Negative index
87	a=(1 '2 3')
88	argv.py "${a[-1]}" "${a[-2]}" "${a[-5]}" # last one out of bounds
89	# stdout: ['2 3', '1', '']
90	# N-I mksh stdout: ['', '', '']
91
92	### Retrieve index that is a variable
93	a=(1 '2 3')
94	i=1
95	argv.py "${a[$i]}"
96	# stdout: ['2 3']
97
98	### Retrieve index that is a variable without $
99	a=(1 '2 3')
100	i=5
101	argv.py "${a[i-4]}"
102	# stdout: ['2 3']
103
104	### Retrieve index that is a command sub
105	a=(1 '2 3')
106	argv.py "${a[$(echo 1)]}"
107	# stdout: ['2 3']
108
109	### Retrieve all indices with !
110	a=(1 '2 3')
111	argv.py "${!a[@]}"
112	# stdout: ['0', '1']
113
114	### ${!a[1]} is named ref in bash
115	# mksh ignores it
116	foo=bar
117	a=('1 2' foo '2 3')
118	argv.py "${!a[1]}"
119	# status: 0
120	# stdout: ['bar']
121	# N-I mksh stdout: ['a[1]']
122
123	### Retrieve indices without []
124	# bash gives empty string?
125	# mksh gives the name of the variable with !. Very weird.
126	a=(1 '2 3')
127	argv.py "${!a}"
128	# stdout: ['']
129	# OK mksh stdout: ['a']
130
131	### All elements unquoted
132	a=(1 '2 3')
133	argv.py ${a[@]}
134	# stdout: ['1', '2', '3']
135
136	### All elements quoted
137	a=(1 '2 3')
138	argv.py "${a[@]}"
139	# stdout: ['1', '2 3']
140
141	### $*
142	a=(1 '2 3')
143	argv.py ${a[*]}
144	# stdout: ['1', '2', '3']
145
146	### "$*"
147	a=(1 '2 3')
148	argv.py "${a[*]}"
149	# stdout: ['1 2 3']
150
151	### Interpolate array into array
152	a=(1 '2 3')
153	a=(0 "${a[@]}" '4 5')
154	argv.py "${a[@]}"
155	# stdout: ['0', '1', '2 3', '4 5']
156
157	### Exporting array doesn't do anything, not even first element
158	# bash parses, but doesn't execute.
159	# mksh gives syntax error -- parses differently with 'export'
160	# osh no longer parses this statically.
161	export PYTHONPATH=(a b c)
162	export PYTHONPATH=a # NOTE: in bash, this doesn't work afterward!
163	printenv.py PYTHONPATH
164	# stdout: None
165	# OK mksh stdout-json: ""
166	# OK mksh status: 1
167	# OK osh stdout-json: ""
168	# OK osh status: 2
169
170	### Env with array
171	# Hm it treats it as a string!
172	A=a B=(b b) printenv.py A B
173	# stdout-json: "a\n(b b)\n"
174	# BUG mksh stdout-json: ""
175	# BUG mksh status: 1
176
177	### Set element
178	a=(1 '2 3')
179	a[0]=9
180	argv.py "${a[@]}"
181	# stdout: ['9', '2 3']
182
183	### Set element with var ref
184	a=(1 '2 3')
185	i=0
186	a[$i]=9
187	argv.py "${a[@]}"
188	# stdout: ['9', '2 3']
189
190	### Set element with array ref
191	# This makes parsing a little more complex. Anything can be inside [],
192	# including other [].
193	a=(1 '2 3')
194	i=(0 1)
195	a[${i[1]}]=9
196	argv.py "${a[@]}"
197	# stdout: ['1', '9']
198
199	### Set array item to array
200	a=(1 2)
201	a[0]=(3 4)
202	echo "status=$?"
203	# stdout: status=1
204	# status: 0
205	# N-I mksh stdout-json: ""
206	# N-I mksh status: 1
207
208	### Slice of array with [@]
209	# mksh doesn't support this syntax! It's a bash extension.
210	a=(1 2 3)
211	argv.py "${a[@]:1:2}"
212	# stdout: ['2', '3']
213	# N-I mksh status: 1
214	# N-I mksh stdout-json: ""
215
216	### Negative slice
217	# mksh doesn't support this syntax! It's a bash extension.
218	# NOTE: for some reason -2) has to be in parens? Ah that's because it
219	# conflicts with :-! That's silly. You can also add a space.
220	a=(1 2 3)
221	argv.py "${a[@]:(-2):1}"
222	# stdout: ['2']
223	# N-I mksh status: 1
224	# N-I mksh stdout-json: ""
225
226	### Slice with arithmetic
227	a=(1 2 3)
228	i=5
229	argv.py "${a[@]:i-4:2}"
230	# stdout: ['2', '3']
231	# N-I mksh status: 1
232	# N-I mksh stdout-json: ""
233
234	### Number of elements
235	a=(1 '2 3')
236	echo "${#a[@]}"
237	# stdout: 2
238
239	### Length of an element
240	a=(1 '2 3')
241	echo "${#a[1]}"
242	# stdout: 3
243
244	### Iteration
245	a=(1 '2 3')
246	for v in "${a[@]}"; do
247	echo $v
248	done
249	# stdout-json: "1\n2 3\n"
250
251	### glob within array yields separate elements
252	touch _tmp/y.Y _tmp/yy.Y
253	a=(_tmp/*.Y)
254	argv.py "${a[@]}"
255	# stdout: ['_tmp/y.Y', '_tmp/yy.Y']
256
257	### declare array and then append
258	declare -a array
259	array+=(a)
260	array+=(b c)
261	argv.py "${array[@]}"
262	# stdout: ['a', 'b', 'c']
263
264	### Array syntax in wrong place
265	ls foo=(1 2)
266	# status: 2
267	# OK mksh status: 1
268
269	### Empty array with :-
270	empty=()
271	argv.py ${empty[@]:-not one} "${empty[@]:-not one}"
272	# stdout: ['not', 'one', 'not one']
273
274	### Single array with :-
275	# bash does EMPTY ELISION here, unless it's double quoted. mksh has
276	# more sane behavior. OSH is better.
277	single=('')
278	argv.py ${single[@]:-none} x "${single[@]:-none}"
279	# OK osh stdout: ['x', '']
280	# OK bash stdout: ['none', 'x', '']
281	# OK mksh stdout: ['none', 'x', 'none']
282
283	### Stripping a whole array unquoted
284	# Problem: it joins it first.
285	files=('foo.c' 'sp ace.h' 'bar.c')
286	argv.py ${files[@]%.c}
287	# status: 0
288	# stdout: ['foo', 'sp', 'ace.h', 'bar']
289	# N-I mksh status: 1
290	# N-I mksh stdout-json: ""
291
292	### Stripping a whole array quoted
293	files=('foo.c' 'sp ace.h' 'bar.c')
294	argv.py "${files[@]%.c}"
295	# status: 0
296	# stdout: ['foo', 'sp ace.h', 'bar']
297	# N-I mksh status: 1
298	# N-I mksh stdout-json: ""
299
300	### Multiple subscripts not allowed
301	a=('123' '456')
302	argv.py "${a[0]}" "${a[0][0]}"
303	# stdout-json: ""
304	# status: 2
305	# OK mksh status: 1
306	# bash is bad -- it IGNORES the bad subscript.
307	# BUG bash status: 0
308	# BUG bash stdout: ['123', '123']
309
310	### Length op, index op, then transform op is not allowed
311	a=('123' '456')
312	echo "${#a[0]}" "${#a[0]/1/xxx}"
313	# stdout-json: ""
314	# status: 2
315	# OK mksh status: 1
316	# bash is bad -- it IGNORES the op at the end
317	# BUG bash status: 0
318	# BUG bash stdout: 3 3
319
320	### Array subscript not allowed on string
321	s='abc'
322	echo ${s[@]}
323	# BUG bash/mksh status: 0
324	# BUG bash/mksh stdout: abc
325	# status: 1
326
327	### Create a "user" array out of the argv array
328	set -- 'a b' 'c'
329	array1=('x y' 'z')
330	array2=("$@")
331	argv.py "${array1[@]}" "${array2[@]}"
332	# stdout: ['x y', 'z', 'a b', 'c']
333
334	### Tilde expansion within array
335	HOME=/home/bob
336	a=(~/src ~/git)
337	echo "${a[@]}"
338	# stdout: /home/bob/src /home/bob/git
339
340	### Brace Expansion within Array
341	a=(-{a,b} {c,d}-)
342	echo "${a[@]}"
343	# stdout: -a -b c- d-
344
345	### array default
346	default=('1 2' '3')
347	argv.py "${undef[@]:-${default[@]}}"
348	# stdout: ['1 2', '3']
349