tests/array25.sub

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# tests with blank subscripts, indexed and associative

echo 1. indexed:
a[0]=0 a[1]=1

v=" "

echo reference:

echo 1. ${a[ ]}
echo 2. ${a[' ']}
echo 3. "${a[ ]}"
echo 4. ${a[$v]}
echo 5. ${a["$v"]}
echo 6. "${a[$v]}"

echo assignment:

echo -n 1. ; a[ ]=10 ; typeset -p a ; a[0]=0
echo -n 2. ; a[" "]=11 ; typeset -p a ; a[0]=0
echo -n 3. ; a[$v]=12 ; typeset -p a ; a[0]=0
echo -n 4. ; a["$v"]=13 ; typeset -p a ; a[0]=0

echo arithmetic:

echo -n 1. ; (( a[ ]=10 )); typeset -p a ; a[0]=0
echo -n 2. ; (( a[" "]=11 )); typeset -p a ; a[0]=0
echo -n 3. ; (( a[$v]=12 )); typeset -p a ; a[0]=0
echo -n 4. ; (( a["$v"]=13 )); typeset -p a ; a[0]=0
echo -n 5. ; let "a[ ]=10" ; typeset -p a ; a[0]=0
echo -n 6. ; let "a[\" \"]=11" ; typeset -p a ; a[0]=0
echo -n 7. ; let "a[$v]=12" ; typeset -p a ; a[0]=0
echo -n 8. ; let "a[\"$v\"]=13" ; typeset -p a ; a[0]=0

unset -v a v

echo 2. associative:
shopt -s assoc_expand_once

typeset -A a
a[0]=0 a[1]=1

v=" "

echo reference:

echo 1. ${a[ ]}
echo 2. ${a[' ']}
echo 3. "${a[ ]}"
echo 4. ${a[$v]}
echo 5. ${a["$v"]}
echo 6. "${a[$v]}"

echo assignment:

echo -n 1. ; a[ ]=10 ; typeset -p a ; a[0]=0
echo -n 2. ; a[" "]=11 ; typeset -p a ; a[0]=0
echo -n 3. ; a[$v]=12 ; typeset -p a ; a[0]=0
echo -n 4. ; a["$v"]=13 ; typeset -p a ; a[0]=0

echo arithmetic:

echo -n 1. ; (( a[ ]=10 )); typeset -p a ; a[0]=0
echo -n 2. ; (( a[" "]=11 )); typeset -p a ; a[0]=0
echo -n 3. ; (( a[$v]=12 )); typeset -p a ; a[0]=0
echo -n 4. ; (( a["$v"]=13 )); typeset -p a ; a[0]=0
echo -n 5. ; let "a[ ]=10" ; typeset -p a ; a[0]=0
echo -n 6. ; let "a[\" \"]=11" ; typeset -p a ; a[0]=0
echo -n 7. ; let "a[$v]=12" ; typeset -p a ; a[0]=0
echo -n 8. ; let "a[\"$v\"]=13" ; typeset -p a ; a[0]=0