dollar-at-star

android-w.song.android.widget

# 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