blob: d46c003f116dacd127ec54e2e309c54caed054e0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
# can we unset the nameref attribute on variables with values that reference
# unset variables?
unset bar
declare -n foo="bar"
declare -p foo
declare +n foo
declare -p foo bar
declare -n foo
declare -p foo
# let's try removing the nameref attribute -- other attributes and assignments
# apply to the nameref target
declare +n -i foo=7+4
declare -p foo bar
unset foo bar
# but if the nameref variable doesn't have a value, the attributes apply to
# the nameref variable itself. thanks ksh93
declare -n foo6
declare -xi foo6
declare -p foo6
# and when we remove the nameref attribute, the other attributes remain
declare +n foo6
declare -p foo6
unset foo6
# make sure these cases continue to work
# nameref referencing an existing, set variable
declare -n foo=bar
bar='Hello World!'
declare -p foo bar
declare +n foo
declare -p foo bar
unset foo bar
# nameref referencing an existing, unset variable
declare -n foo=bar
declare bar
declare -p foo bar
declare +n foo
declare -p foo bar
|
