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busybox/shell/hush_test/hush-vars/unset.tests

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implement `unset` semantics as required by POSIX
2009-03-30 12:20:54 +05:30
# check invalid options are rejected
ash: [VAR] Move unsetvar functionality into setvareq Upstream commit: Date: Tue, 25 May 2010 20:55:05 +0800 [VAR] Move unsetvar functionality into setvareq This patch moves the unsetvar code into setvareq so that we can no have a pathological case of an unset variable hanging around unless it has a bit pinning it like VEXPORT. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> function old new delta setvareq 227 303 +76 expmeta 517 521 +4 localcmd 364 366 +2 unsetcmd 96 76 -20 unsetvar 129 7 -122 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/2 up/down: 82/-142) Total: -60 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25 19:59:36 +05:30
# bash: in posix mode, aborts if non-interactive
implement `unset` semantics as required by POSIX
2009-03-30 12:20:54 +05:30
unset -
echo $?
unset -m a b c
echo $?
# check funky usage
unset
echo $?
# check normal usage
echo ___
f=f g=g
echo $? $f $g
unset f
echo $? $f $g
unset g
echo $? $f $g
echo ___
f=f g=g
echo $? $f $g
unset f g
echo $? $f $g
f=f g=g
echo $? $f $g
unset -v f g
echo $? $f $g
# check read only vars
echo ___
f=f g=g
ash: [VAR] Move unsetvar functionality into setvareq Upstream commit: Date: Tue, 25 May 2010 20:55:05 +0800 [VAR] Move unsetvar functionality into setvareq This patch moves the unsetvar code into setvareq so that we can no have a pathological case of an unset variable hanging around unless it has a bit pinning it like VEXPORT. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> function old new delta setvareq 227 303 +76 expmeta 517 521 +4 localcmd 364 366 +2 unsetcmd 96 76 -20 unsetvar 129 7 -122 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/2 up/down: 82/-142) Total: -60 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25 19:59:36 +05:30
VAR_RO=1
readonly VAR_RO
unset VAR_RO
implement `unset` semantics as required by POSIX
2009-03-30 12:20:54 +05:30
echo $? $f $g
ash: [VAR] Move unsetvar functionality into setvareq Upstream commit: Date: Tue, 25 May 2010 20:55:05 +0800 [VAR] Move unsetvar functionality into setvareq This patch moves the unsetvar code into setvareq so that we can no have a pathological case of an unset variable hanging around unless it has a bit pinning it like VEXPORT. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> function old new delta setvareq 227 303 +76 expmeta 517 521 +4 localcmd 364 366 +2 unsetcmd 96 76 -20 unsetvar 129 7 -122 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/2 up/down: 82/-142) Total: -60 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25 19:59:36 +05:30
unset f VAR_RO g
implement `unset` semantics as required by POSIX
2009-03-30 12:20:54 +05:30
echo $? $f $g
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