Shell (bash/zsh) script to return all paths of an executable command (symlinks, function definition, etc)

which-all

## -----------------------------------------
#  Return any and all paths and/or symlinks of a command
#
#  @1 = command name
##
function which-all () {
    if [[ -z "$1" ]]; then
        echo "Script name or file path?"
        read SCRPTNAME
    else
        SCRPTNAME=$1
    fi
    if [[ $($(whereis type) -t $SCRPTNAME) = "file" ]]; then
        if [[ "$1" != "-f" && "$1" != "--file" ]] || [[ $($(whereis type) $SCRPTNAME &>/dev/null && echo "true" || echo "false") = "true" ]]; then
            SCRPTPATH=$(which $SCRPTNAME)
        else
            SCRPTPATH=$SCRPTNAME
        fi
        if [[ $($(whereis type) -t namei-simple) = "file" ]]; then
            namei-simple $SCRPTPATH
        else
            curl -s https://gist.githubusercontent.com/blizzrdof77/4ee14d5f2669245774f60ea2cefc65c5/raw/856be782853de0fa9bdcbbacad4eada6a260783d/namei-simple | bash /dev/stdin $SCRPTPATH
        fi
    else
        local OUTP=$(type -a $SCRPTNAME)
        if [[ -n "$ZSH_VERSION" ]]; then
            which $SCRPTNAME
            local OUTP="$(color underline green) $(type -a $SCRPTNAME) $(color)"
        fi
        echo "$OUTP"
    fi
}