Access functions declared in script from commandline

access-fn-from-commandline.zsh

# Suppose you have a script named "myscript" with a function - conquerworld
# You can access those functions from terminal as
# myscript conquerworld <rest of args>
# or
# myscript conquer world <rest of args>

if [ "$1" = "--help" ]; then
    helpmenu
    exit 0
elif declare -f "$1" > /dev/null; then
    "$@"
elif declare -f "$1$2" > /dev/null; then
    "$1$2" "${@:3}"
else
    echo "'$1' is not a known command" >&2
    helpmenu
    exit 1
fi