1	#!/usr/bin/env bash
2
3	#### implicit for loop
4	# This is like "for i in $@".
5	func() {
6	for i; do
7	echo $i
8	done
9	}
10	func 1 2 3
11	## stdout-json: "1\n2\n3\n"
12
13	#### empty for loop (has "in")
14	set -- 1 2 3
15	for i in ; do
16	echo $i
17	done
18	## stdout-json: ""
19
20	#### for loop with invalid identifier
21	# should be compile time error, but runtime error is OK too
22	for - in a b c; do
23	echo hi
24	done
25	## stdout-json: ""
26	## status: 2
27	## OK bash/mksh status: 1
28	## BUG zsh stdout: hi
29	## BUG zsh status: 1
30
31	#### Tilde expansion within for loop
32	HOME=/home/bob
33	for name in ~/src ~/git; do
34	echo $name
35	done
36	## stdout-json: "/home/bob/src\n/home/bob/git\n"
37
38	#### Brace Expansion within Array
39	for i in -{a,b} {c,d}-; do
40	echo $i
41	done
42	## stdout-json: "-a\n-b\nc-\nd-\n"
43	## N-I dash stdout-json: "-{a,b}\n{c,d}-\n"
44
45	#### using loop var outside loop
46	func() {
47	for i in a b c; do
48	echo $i
49	done
50	echo $i
51	}
52	func
53	## status: 0
54	## stdout-json: "a\nb\nc\nc\n"
55
56	#### continue
57	for i in a b c; do
58	echo $i
59	if test $i = b; then
60	continue
61	fi
62	echo $i
63	done
64	## status: 0
65	## stdout-json: "a\na\nb\nc\nc\n"
66
67	#### break
68	for i in a b c; do
69	echo $i
70	if test $i = b; then
71	break
72	fi
73	done
74	## status: 0
75	## stdout-json: "a\nb\n"
76
77	#### while in while condition
78	# This is a consequence of the grammar
79	while while true; do echo cond; break; done
80	do
81	echo body
82	break
83	done
84	## stdout-json: "cond\nbody\n"
85
86	#### while in pipe
87	x=$(find spec/ | wc -l)
88	y=$(find spec/ | while read path; do
89	echo $path
90	done | wc -l
91	)
92	test $x -eq $y
93	echo status=$?
94	## stdout: status=0
95
96	#### while in pipe with subshell
97	i=0
98	find . -maxdepth 1 -name INSTALL.txt -o -name LICENSE.txt | ( while read path; do
99	i=$((i+1))
100	#echo $i
101	done
102	echo $i )
103	## stdout: 2
104
105	#### until loop
106	# This is just the opposite of while? while ! cond?
107	until false; do
108	echo hi
109	break
110	done
111	## stdout: hi
112
113	#### continue at top level
114	# zsh behaves with strict-control-flow!
115	if true; then
116	echo one
117	continue
118	echo two
119	fi
120	## status: 0
121	## STDOUT:
122	one
123	two
124	## END
125	## OK zsh status: 1
126	## OK zsh STDOUT:
127	one
128	## END
129
130	#### continue in subshell
131	for i in $(seq 3); do
132	echo "> $i"
133	( if true; then continue; fi; echo "Should not print" )
134	echo ". $i"
135	done
136	## STDOUT:
137	> 1
138	. 1
139	> 2
140	. 2
141	> 3
142	. 3
143	## END
144	## BUG mksh STDOUT:
145	> 1
146	Should not print
147	. 1
148	> 2
149	Should not print
150	. 2
151	> 3
152	Should not print
153	. 3
154	## END