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|
# first, let's start with the basics
recho "$@"
recho "$*"
recho $@
recho $*
set a b
recho "$*"
# If IFS is null, the parameters are joined without separators
IFS=''
recho "$*"
# If IFS is unset, the parameters are separated by spaces
unset IFS
recho "${*}"
recho "$@"
recho $@
IFS='/'
set bob 'tom dick harry' joe
set $*
recho $#
recho $1
recho $2
recho $3
set bob 'tom dick harry' joe
set ${*}
recho $#
recho $1
recho $2
recho $3
set bob 'tom dick harry' joe
set $@
recho $#
recho $1
recho $2
recho $3
set bob 'tom dick harry' joe
set ${@}
recho $#
recho $1
recho $2
recho $3
# according to POSIX.2, unquoted $* should expand to multiple words if
# $IFS is null, just like unquoted $@
IFS=''
set bob 'tom dick harry' joe
set $*
recho $#
recho $1
recho $2
recho $3
set bob 'tom dick harry' joe
set $@
recho $#
recho $1
recho $2
recho $3
# if IFS is unset, the individual positional parameters are split on
# " \t\n" if $* or $@ are unquoted
unset IFS
set bob 'tom dick harry' joe
set $*
recho $#
recho $1
recho $2
recho $3
set bob 'tom dick harry' joe
set $@
recho $#
recho $1
recho $2
recho $3
# but not for "$@" or "$*"
set bob 'tom dick harry' joe
set "$*"
recho $#
recho $1
recho $2
recho $3
set bob 'tom dick harry' joe
set "$@"
recho $#
recho $1
recho $2
recho $3
# POSIX.2 says these should both expand the positional parameters
# to multiple words
set a b c d e
IFS=""
recho $@
recho "$@"
# this example is straight from the POSIX.2 rationale
set foo bar bam
recho "$@"
recho "$*"
unset IFS
recho "$@"
recho $@
recho "$*"
IFS=:
# special variables
set -- 1 2 3 4 5 6 7 8 9 10
bar=${*}
foo=$*
echo foo = "$foo"
echo bar = "$bar"
foo1=$@
bar1=${@}
echo foo1 = "$foo1"
echo bar1 = "$bar1"
foo2="$*"
bar2="${*}"
echo foo2 = "$foo2"
echo bar2 = "$bar2"
eval foo3='$*' bar3='${*}'
echo foo3 = "$foo3"
echo bar3 = "$bar3"
case $* in
*\:*) echo ok 1;;
*) echo bad 1;;
esac
case $@ in
*\:*) echo bad 2;;
*) echo ok 2;;
esac
case "$*" in
*\:*) echo ok 3;;
*) echo bad 3;;
esac
case "$@" in
*\:*) echo bad 4;;
*) echo ok 4;;
esac
IFS=$' \t\n'
bar=${*}
foo=$*
echo foo = "$foo"
echo bar = "$bar"
foo1=$@
bar1=${@}
echo foo1 = "$foo1"
echo bar1 = "$bar1"
foo2="$*"
bar2="${*}"
echo foo2 = "$foo2"
echo bar2 = "$bar2"
eval foo3='$*' bar3='${*}'
echo foo3 = "$foo3"
echo bar3 = "$bar3"
case $* in
*\ *) echo ok 1;;
*) echo bad 1;;
esac
case $@ in
*\ *) echo ok 2;;
*) echo bad 2;;
esac
case "$*" in
*\ *) echo ok 3;;
*) echo bad 3;;
esac
case "$@" in
*\ *) echo ok 4;;
*) echo bad 4;;
esac
# tests for special expansion of "$*" and "${array[*]}" when used with other
# expansions -- bugs through bash-2.05b
${THIS_SH} ./dollar-star1.sub
# tests for expansion of "$@" on rhs of things like ${param:+word}. Bugs
# though bash-2.05b
${THIS_SH} ./dollar-at1.sub
# tests for expansion of other variables in double-quoted strings containing
# $@. Bugs through bash-2.05b
${THIS_SH} ./dollar-at2.sub
# tests for various expansions of $* in different contexts -- word split,
# no splitting, etc. when $IFS is NUL
${THIS_SH} ./dollar-star2.sub
# tests for expansions of "${array[*]}" and "${array[@]}" when $IFS is not the
# default and the array contains null elements
${THIS_SH} ./dollar-star3.sub
# test for set -u and expansions of $@ when there are no positional parameters
${THIS_SH} ./dollar-at3.sub
# test for set -u and expansions of $* when there are no positional parameters
${THIS_SH} ./dollar-star4.sub
# tests for expansions of $* when IFS is null
${THIS_SH} ./dollar-star5.sub
exit 0
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