on script load:
    set {_letters} to "Aa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn Oo Pp Qq Rr Ss Tt Uu Vv Ww Xx Yy Zz"
    set {_letter-pairs::*} to {_letters} split at " "
    loop {_letter-pairs::*}:
        set {_pair::*} to loop-value split at ""
        set {_uppercase} to {_pair::1}
        set {_lowercase} to {_pair::2}
        set {letters::uppercase::%{_lowercase}%} to {_uppercase}
        set {letters::lowercase::%{_uppercase}%} to {_lowercase}
 
on script unload:
    delete {letters::*}
 
function switchCaseFor(text: text, to-uppercase: boolean) :: text:
    set {_characters::*} to {_text} split at ""
    set {_new} to ""
    loop {_characters::*}:
        set {_char} to loop-value
        if {_to-uppercase} is false:
            set {_char} to {letters::lowercase::%loop-value%}
        set {_new} to "%{_new}%%{_char}%"
    return {_new}

function lowercase(text: text) :: text:
    return switchCaseFor({_text}, false)
    
function contains(list: objects, check: object) :: boolean:
    loop {_list::*}:
        if loop-value is {_check}:
            return true
    return false
            
function nickfix(nick: text) :: text:
    set {_} to "abcdefghijklmnopqrstuvwxyz0123456789"
    set {_1} to {_nick}
    set {_2} to {_nick}
    set {_l::*} to {_} split at ""
    loop {_l::*}:
        replace every loop-value with "" in {_1}
    set {_l2::*} to {_1} split at ""
    loop {_l2::*}:
        replace every loop-value with "" in {_2}
    return {_2}