1	# Oil Blocks
2
3
4	#### cd with block
5	shopt -s oil:all
6	# OLDPWD is NOT defined
7	cd / { echo $PWD; echo OLDPWD=${OLDPWD:-} }; echo done
8	echo $(basename $PWD) # restored
9	cd /tmp {
10	write PWD=$PWD
11	write -sep ' ' pwd builtin: $(pwd)
12	}
13	echo $(basename $PWD) # restored
14	## STDOUT:
15	/
16	OLDPWD=
17	done
18	oil-blocks.test.sh
19	PWD=/tmp
20	pwd builtin: /tmp
21	oil-blocks.test.sh
22	## END
23
24	#### cd with block: fatal error in block
25	shopt -s oil:all
26	cd / {
27	echo one
28	false
29	echo two
30	}
31	## status: 1
32	## STDOUT:
33	one
34	## END
35
36
37	#### cd with block: return in block
38	shopt -s oil:all
39	f() {
40	cd / {
41	echo one
42	return
43	echo two
44	}
45	echo 'end func'
46	}
47	f
48	## STDOUT:
49	one
50	end func
51	## END
52
53	#### cd with block: break in block
54	shopt -s oil:all
55	f() {
56	cd / {
57	echo one
58	for i in 1 2; do
59	echo $i
60	break # break out of loop
61	done
62
63	break # break out of block isn't valid
64	echo two
65	}
66	echo end func
67	}
68	f
69	## status: 1
70	## STDOUT:
71	one
72	1
73	## END
74
75	#### cd with block exits with status 0
76	shopt -s oil:all
77	cd / {
78	echo block
79
80	# This return value is ignored.
81	# Or maybe this should be a runtime error?
82	return 1
83	}
84	echo status=$?
85	## STDOUT:
86	block
87	status=0
88	## END
89
90	#### block has its own scope, e.g. shadows outer vars
91	shopt -s oil:all
92	var x = 1
93	cd / {
94	#set y = 5 # This would be an error because set doesn't do dynamic lookup
95	var x = 42
96	echo "inner x = $x"
97	}
98	echo "outer x = $x"
99	## STDOUT:
100	inner x = 42
101	outer x = 1
102	## END
103
104