# assignment to @ and *

declare -A assoc
key=@
key2=*

assoc[$key]=at
assoc[$key2]=star
assoc[!]=bang
declare -p assoc

echo ${assoc[$key]}
echo ${assoc[$key2]}
unset assoc

declare -A a

a[@]=at
declare -p a

declare -a ia
ia[@]=garbage

declare -p ia

declare a[@]=at2
declare -p a

unset a ia

declare -A a
printf -v a[@] "%10s" string

declare -p a
unset a

declare -A a
declare a[$key2]=star
declare a[@]=at
declare a[*]=star2

declare -p a
unset a