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1 | # This program is free software: you can redistribute it and/or modify |
2 | # it under the terms of the GNU General Public License as published by | |
3 | # the Free Software Foundation, either version 3 of the License, or | |
4 | # (at your option) any later version. | |
5 | # | |
6 | # This program is distributed in the hope that it will be useful, | |
7 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
8 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
9 | # GNU General Public License for more details. | |
10 | # | |
11 | # You should have received a copy of the GNU General Public License | |
12 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
13 | # | |
d233b485 CR |
14 | # |
15 | # various tests of unset when applied to variables at different local scopes | |
8868edaf | 16 | # |
d233b485 CR |
17 | # function unsetting variable at previous local scope, uncovering global |
18 | ||
19 | inner() | |
20 | { | |
21 | unset res | |
22 | echo ${FUNCNAME}: ${res-res unset} | |
23 | if [[ $1 == "set" ]]; then | |
24 | res[0]="X" | |
25 | res[1]="Y" | |
26 | fi | |
27 | } | |
28 | ||
29 | outer() | |
30 | { | |
31 | local res= | |
32 | inner "$1" | |
33 | echo ${FUNCNAME}: "res: ${res[@]}" | |
34 | } | |
35 | ||
36 | echo main: ${res-unset} | |
37 | outer set | |
38 | echo main: after first call: ${res-unset} | |
39 | outer dontset | |
40 | echo main: after second call: ${res-unset} | |
41 | ||
42 | unset -f outer inner | |
43 | unset res | |
44 | ||
45 | # local scope, unset variable at the same scope as local declaration | |
46 | func() | |
47 | { | |
48 | typeset x=4 | |
49 | ||
50 | unset x | |
51 | echo ${FUNCNAME}: ${x:-null or unset} | |
52 | } | |
53 | ||
54 | x=outside | |
55 | func | |
56 | echo after func: x = $x | |
57 | ||
58 | unset -f func | |
59 | unset x |