Block non English languages in chat

[Olle Risk]

Hello,

Does anyone know how I can block non English languages in the chat, I'm using a custom chat system where the message is stored in a variable called "message" which is then printed using outputChatBox. Now my question is, how do I check this variable so that it only contains a set of allowed symbols like A-Z, a-z, 0-9 and a few symbols more? What function do I use?

[anumaz]

Two ways. First way is making a table of allowed characters and then returning an error if your string contains a character not listed in that tab.

Second way is with string.match and string.find with patterns. The patterns are:

  
 . --- (a dot) represents all characters.  
%a --- all letters.  
%c --- all control characters.  
%d --- all digits.  
%l --- all lowercase letters.  
%p --- all punctuation characters.  
%s --- all space characters.  
%u --- all uppercase letters.  
%w --- all alphanumeric characters.  
%x --- all hexadecimal digits.  
%z --- the character with hex representation 0x00 (null).  
%% --- a single '%' character. 
%1 --- captured pattern 1. 
%2 --- captured pattern 2 (and so on). 
%f[s]  transition from not in set 's' to in set 's'. 
%b()   balanced nested pair ( ... ( ... ) ... )  
  

[Olle Risk]

Thanks mate, works great