1	#!/bin/bash
2
3	### trap -l
4	trap -l | grep INT >/dev/null
5	## status: 0
6	## N-I dash/mksh status: 1
7
8	### trap -p
9	trap 'echo exit' EXIT
10	trap -p | grep EXIT >/dev/null
11	## status: 0
12	## N-I dash/mksh status: 1
13
14	### Register invalid trap
15	trap 'foo' SIGINVALID
16	## status: 1
17
18	### Remove invalid trap
19	trap - SIGINVALID
20	## status: 1
21
22	### SIGINT and INT are aliases
23	trap - SIGINT
24	echo $?
25	trap - INT
26	echo $?
27	## STDOUT:
28	0
29	0
30	## END
31	## N-I dash STDOUT:
32	1
33	0
34	## END
35
36	### Invalid trap invocation
37	trap 'foo'
38	echo status=$?
39	## stdout: status=1
40	## OK bash stdout: status=2
41	## BUG mksh stdout: status=0
42
43	### exit 1 when trap code string is invalid
44	# All shells spew warnings to stderr, but don't actually exit! Bad!
45	trap 'echo <' EXIT
46	echo status=$?
47	## stdout: status=1
48	## BUG mksh status: 1
49	## BUG mksh stdout: status=0
50	## BUG dash/bash status: 0
51	## BUG dash/bash stdout: status=0
52
53	### trap EXIT
54	cleanup() {
55	echo "cleanup [$@]"
56	}
57	trap 'cleanup x y z' EXIT
58	## stdout: cleanup [x y z]
59
60	### trap DEBUG
61	debuglog() {
62	echo "debuglog [$@]"
63	}
64	trap 'debuglog x y' DEBUG
65	echo 1
66	echo 2
67	## STDOUT:
68	debuglog [x y]
69	1
70	debuglog [x y]
71	2
72	## END
73	## N-I dash/mksh STDOUT:
74	1
75	2
76	## END
77
78	### trap RETURN
79	profile() {
80	echo "profile [$@]"
81	}
82	g() {
83	echo --
84	echo g
85	echo --
86	return
87	}
88	f() {
89	echo --
90	echo f
91	echo --
92	g
93	}
94	# RETURN trap doesn't fire when a function returns, only when a script returns?
95	# That's not what the manual syas.
96	trap 'profile x y' RETURN
97	f
98	. spec/testdata/return-helper.sh
99	## status: 42
100	## STDOUT:
101	--
102	f
103	--
104	--
105	g
106	--
107	return-helper.sh
108	profile [x y]
109	## END
110	## N-I dash/mksh STDOUT:
111	--
112	f
113	--
114	--
115	g
116	--
117	return-helper.sh
118	## END
119
120	### trap ERR and disable it
121	err() {
122	echo "err [$@] $?"
123	}
124	trap 'err x y' ERR
125	echo 1
126	false
127	echo 2
128	trap - ERR # disable trap
129	false
130	echo 3
131	## STDOUT:
132	1
133	err [x y] 1
134	2
135	3
136	## END
137	# N-I dash STDOUT:
138	1
139	2
140	3
141	## END