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=2
40	## OK dash stdout: status=1
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	exit 42
57	}
58	trap 'cleanup x y z' EXIT
59	## stdout: cleanup [x y z]
60	## status: 42
61
62	#### trap DEBUG
63	debuglog() {
64	echo "debuglog [$@]"
65	}
66	trap 'debuglog x y' DEBUG
67	echo 1
68	echo 2
69	## STDOUT:
70	debuglog [x y]
71	1
72	debuglog [x y]
73	2
74	## END
75	## N-I dash/mksh STDOUT:
76	1
77	2
78	## END
79
80	#### trap RETURN
81	profile() {
82	echo "profile [$@]"
83	}
84	g() {
85	echo --
86	echo g
87	echo --
88	return
89	}
90	f() {
91	echo --
92	echo f
93	echo --
94	g
95	}
96	# RETURN trap doesn't fire when a function returns, only when a script returns?
97	# That's not what the manual syas.
98	trap 'profile x y' RETURN
99	f
100	. spec/testdata/return-helper.sh
101	## status: 42
102	## STDOUT:
103	--
104	f
105	--
106	--
107	g
108	--
109	return-helper.sh
110	profile [x y]
111	## END
112	## N-I dash/mksh STDOUT:
113	--
114	f
115	--
116	--
117	g
118	--
119	return-helper.sh
120	## END
121
122	#### trap ERR and disable it
123	err() {
124	echo "err [$@] $?"
125	}
126	trap 'err x y' ERR
127	echo 1
128	false
129	echo 2
130	trap - ERR # disable trap
131	false
132	echo 3
133	## STDOUT:
134	1
135	err [x y] 1
136	2
137	3
138	## END
139	## N-I dash STDOUT:
140	1
141	2
142	3
143	## END
144
145	#### trap with PARSE error (implicit exit)
146	trap 'echo FAILED' EXIT
147	for
148	## stdout: FAILED
149	## status: 2
150	## OK mksh status: 1
151
152	#### trap with PARSE error with explicit exit
153	trap 'echo FAILED; exit 0' EXIT
154	for
155	## stdout: FAILED
156	## status: 0
157
158	#### trap 0 is equivalent to EXIT
159	# not sure why this is, but POSIX wants it.
160	trap 'echo EXIT' 0
161	echo status=$?
162	trap - EXIT
163	echo status=$?
164	## status: 0
165	## STDOUT:
166	status=0
167	status=0
168	## END
169
170	#### trap 1 is equivalent to SIGHUP; HUP is equivalent to SIGHUP
171	trap 'echo HUP' SIGHUP
172	echo status=$?
173	trap 'echo HUP' HUP
174	echo status=$?
175	trap 'echo HUP' 1
176	echo status=$?
177	trap - HUP
178	echo status=$?
179	## status: 0
180	## STDOUT:
181	status=0
182	status=0
183	status=0
184	status=0
185	## END
186	## N-I dash STDOUT:
187	status=1
188	status=0
189	status=0
190	status=0
191	## END