bash/tests/varenv9.sub

# case 1: readonly modifying local scalar variables
o1() {
    local i1 j1
    readonly i1=$1
    readonly j1="1 2 3"

    echo "in o1 (readonly modifying local scalars):"
    declare -p i1
    declare -p j1
}

o1 "a b c"

echo after o1:
declare -p i1 j1

unset i1 j1

# case 2: readonly setting global scalar variables
o2() {
    readonly i2=$1
    readonly j2="1 2 3"

    echo "in o2 (readonly setting global scalars):"
    declare -p i2
    declare -p j2
}

o2 "a b c"
echo after o2:
declare -p i2 j2

unset i2 j2

# case 3: readonly modifying local variables, converting to arrays
o3() {
    local i3 j3
    readonly i3=($1)
    readonly j3=(1 2 3)

    echo "in o3 (readonly modifying locals, converting to arrays):"
    declare -p i3
    declare -p j3
}

o3 "a b c"
echo after o3:
declare -p i3 j3

unset i3 j3

# case 4: readonly setting global array variables
o4() {
    readonly i4=($1)
    readonly j4=(1 2 3)

    echo "in o4 (readonly setting global array variables):"
    declare -p i4
    declare -p j4
}

o4 "a b c"
echo after o4:
declare -p i4 j4

unset i4 j4