1	#
2	# Test combination of var ops.
3	#
4	# NOTE: There are also slice tests in {array,arith-context}.test.sh.
5
6	#### String slice
7	foo=abcdefg
8	echo ${foo:1:3}
9	## STDOUT:
10	bcd
11	## END
12
13	#### Cannot take length of substring slice
14	# These are runtime errors, but we could make them parse time errors.
15	v=abcde
16	echo ${#v:1:3}
17	## status: 1
18	## OK osh status: 2
19	# zsh actually implements this!
20	## OK zsh stdout: 3
21	## OK zsh status: 0
22
23	#### Out of range string slice: begin
24	# out of range begin doesn't raise error in bash, but in mksh it skips the
25	# whole thing!
26	foo=abcdefg
27	echo _${foo:100:3}
28	echo $?
29	## STDOUT:
30	_
31	0
32	## END
33	## BUG mksh stdout-json: "\n0\n"
34
35	#### Out of range string slice: length
36	# OK in both bash and mksh
37	foo=abcdefg
38	echo _${foo:3:100}
39	echo $?
40	## STDOUT:
41	_defg
42	0
43	## END
44	## BUG mksh stdout-json: "_defg\n0\n"
45
46	#### Negative start index
47	foo=abcdefg
48	echo ${foo: -4:3}
49	## stdout: def
50
51	#### Negative start index respects unicode
52	foo=abcd-μ-
53	echo ${foo: -4:3}
54	## stdout: d-μ
55	## BUG mksh stdout: -μ
56
57	#### Negative second arg is position, not length!
58	foo=abcdefg
59	echo ${foo:3:-1} ${foo: 3: -2} ${foo:3 :-3 }
60	## stdout: def de d
61	## BUG mksh stdout: defg defg defg
62
63	#### Negative start index respects unicode
64	foo=abcd-μ-
65	echo ${foo: -5: -3}
66	## stdout: cd
67	## BUG mksh stdout: d-μ-
68
69	#### String slice with math
70	# I think this is the $(()) language inside?
71	i=1
72	foo=abcdefg
73	echo ${foo: i+4-2 : i + 2}
74	## stdout: def
75
76	#### Slice undefined
77	echo -${undef:1:2}-
78	set -o nounset
79	echo -${undef:1:2}-
80	echo -done-
81	## STDOUT:
82	--
83	## END
84	## status: 1
85	# mksh doesn't respect nounset!
86	## BUG mksh status: 0
87	## BUG mksh STDOUT:
88	--
89	--
90	-done-
91	## END
92
93	#### Slice UTF-8 String
94	# mksh slices by bytes.
95	foo='--μ--'
96	echo ${foo:1:3}
97	## stdout: -μ-
98	## BUG mksh stdout: -μ
99
100	#### Slice string with invalid UTF-8 results in empty string and warning
101	s=$(echo -e "\xFF")bcdef
102	echo -${s:1:3}-
103	## status: 0
104	## STDOUT:
105	--
106	## END
107	## STDERR:
108	[??? no location ???] warning: Invalid start of UTF-8 character
109	## END
110	## BUG bash/mksh/zsh status: 0
111	## BUG bash/mksh/zsh STDOUT:
112	-bcd-
113	## END
114	## BUG bash/mksh/zsh stderr-json: ""
115
116
117	#### Slice string with invalid UTF-8 with strict_word_eval
118	shopt -s strict_word_eval || true
119	echo slice
120	s=$(echo -e "\xFF")bcdef
121	echo -${s:1:3}-
122	## status: 1
123	## STDOUT:
124	slice
125	## END
126	## N-I bash/mksh/zsh status: 0
127	## N-I bash/mksh/zsh STDOUT:
128	slice
129	-bcd-
130	## END
131
132	#### Slice with an index that's an array itself not allowed
133	i=(3 4 5)
134	mystr=abcdefg
135	echo assigned
136	echo ${mystr:$i:2}
137	## status: 1
138	## STDOUT:
139	assigned
140	## END
141	## BUG mksh/bash status: 0
142	## BUG mksh/bash STDOUT:
143	assigned
144	de
145	## END
146
147	#### Slice with an assoc array
148	declare -A A=(['5']=3 ['6']=4)
149	mystr=abcdefg
150	echo assigned
151	echo ${mystr:$A:2}
152	## status: 1
153	## STDOUT:
154	assigned
155	## END
156	## N-I mksh stdout-json: ""
157	## BUG bash/zsh status: 0
158	## BUG bash/zsh STDOUT:
159	assigned
160	ab
161	## END
162
163	#### Simple ${@:offset}
164
165	set -- 4 5 6
166	result=$(argv.py ${@:0})
167	echo ${result//"$0"/'SHELL'}
168	argv.py ${@:1}
169	argv.py ${@:2}
170	## STDOUT:
171	['SHELL', '4', '5', '6']
172	['4', '5', '6']
173	['5', '6']
174	## END
175	## N-I mksh status: 1
176	## N-I mksh stdout-json: "\n"
177
178
179	#### ${@:offset} and ${*:offset}
180	case $SH in (zsh) return ;; esac # zsh is very different
181
182	argv.shell-name-checked () {
183	argv.py "${@//$0/SHELL}"
184	}
185	fun() {
186	argv.shell-name-checked -${*:0}- # include $0
187	argv.shell-name-checked -${*:1}- # from $1
188	argv.shell-name-checked -${*:3}- # last parameter $3
189	argv.shell-name-checked -${*:4}- # empty
190	argv.shell-name-checked -${*:5}- # out of boundary
191	argv.shell-name-checked -${@:0}-
192	argv.shell-name-checked -${@:1}-
193	argv.shell-name-checked -${@:3}-
194	argv.shell-name-checked -${@:4}-
195	argv.shell-name-checked -${@:5}-
196	argv.shell-name-checked "-${*:0}-"
197	argv.shell-name-checked "-${*:1}-"
198	argv.shell-name-checked "-${*:3}-"
199	argv.shell-name-checked "-${*:4}-"
200	argv.shell-name-checked "-${*:5}-"
201	argv.shell-name-checked "-${@:0}-"
202	argv.shell-name-checked "-${@:1}-"
203	argv.shell-name-checked "-${@:3}-"
204	argv.shell-name-checked "-${@:4}-"
205	argv.shell-name-checked "-${@:5}-"
206	}
207	fun "a 1" "b 2" "c 3"
208	## STDOUT:
209	['-SHELL', 'a', '1', 'b', '2', 'c', '3-']
210	['-a', '1', 'b', '2', 'c', '3-']
211	['-c', '3-']
212	['--']
213	['--']
214	['-SHELL', 'a', '1', 'b', '2', 'c', '3-']
215	['-a', '1', 'b', '2', 'c', '3-']
216	['-c', '3-']
217	['--']
218	['--']
219	['-SHELL a 1 b 2 c 3-']
220	['-a 1 b 2 c 3-']
221	['-c 3-']
222	['--']
223	['--']
224	['-SHELL', 'a 1', 'b 2', 'c 3-']
225	['-a 1', 'b 2', 'c 3-']
226	['-c 3-']
227	['--']
228	['--']
229	## END
230	## N-I mksh status: 1
231	## N-I mksh stdout-json: ""
232	## BUG zsh stdout-json: ""
233
234	#### ${@:offset:length} and ${*:offset:length}
235	case $SH in (zsh) return ;; esac # zsh is very different
236
237	argv.shell-name-checked () {
238	argv.py "${@//$0/SHELL}"
239	}
240	fun() {
241	argv.shell-name-checked -${*:0:2}- # include $0
242	argv.shell-name-checked -${*:1:2}- # from $1
243	argv.shell-name-checked -${*:3:2}- # last parameter $3
244	argv.shell-name-checked -${*:4:2}- # empty
245	argv.shell-name-checked -${*:5:2}- # out of boundary
246	argv.shell-name-checked -${@:0:2}-
247	argv.shell-name-checked -${@:1:2}-
248	argv.shell-name-checked -${@:3:2}-
249	argv.shell-name-checked -${@:4:2}-
250	argv.shell-name-checked -${@:5:2}-
251	argv.shell-name-checked "-${*:0:2}-"
252	argv.shell-name-checked "-${*:1:2}-"
253	argv.shell-name-checked "-${*:3:2}-"
254	argv.shell-name-checked "-${*:4:2}-"
255	argv.shell-name-checked "-${*:5:2}-"
256	argv.shell-name-checked "-${@:0:2}-"
257	argv.shell-name-checked "-${@:1:2}-"
258	argv.shell-name-checked "-${@:3:2}-"
259	argv.shell-name-checked "-${@:4:2}-"
260	argv.shell-name-checked "-${@:5:2}-"
261	}
262	fun "a 1" "b 2" "c 3"
263	## STDOUT:
264	['-SHELL', 'a', '1-']
265	['-a', '1', 'b', '2-']
266	['-c', '3-']
267	['--']
268	['--']
269	['-SHELL', 'a', '1-']
270	['-a', '1', 'b', '2-']
271	['-c', '3-']
272	['--']
273	['--']
274	['-SHELL a 1-']
275	['-a 1 b 2-']
276	['-c 3-']
277	['--']
278	['--']
279	['-SHELL', 'a 1-']
280	['-a 1', 'b 2-']
281	['-c 3-']
282	['--']
283	['--']
284	## END
285	## N-I mksh status: 1
286	## N-I mksh stdout-json: ""
287	## BUG zsh stdout-json: ""
288
289	#### ${@:0:1}
290	set a b c
291	result=$(echo ${@:0:1})
292	echo ${result//"$0"/'SHELL'}
293	## STDOUT:
294	SHELL
295	## END
296	## N-I mksh stdout-json: "\n"
297
298	#### ${array[@]::0}
299	array=(1 2 3)
300	argv.py ${array[@]::0}
301	## STDOUT:
302	[]
303	## END
304	## N-I mksh/zsh status: 1
305	## N-I mksh/zsh stdout-json: ""
306
307	#### ${array[@]::}
308	array=(1 2 3)
309	argv.py ${array[@]::}
310	## STDOUT:
311	[]
312	## END
313	## N-I mksh/zsh status: 1
314	## N-I mksh/zsh status: 1
315	## N-I mksh/zsh stdout-json: ""