Configuring the Blacklist (with RegExp)

[Emily]

prohibit each language separately.

Yes you could do that, that would be a solution, allow me to redirect you to an older post of mine then, where there’s a link for all the unicode values:

Block specific languages (with RegExp)

Okay, then for Cyrillic use: /[\u0400-\u04FF]+/ And for Arabic use: /[\u0600-\u06FF]+/ To block further sets of ASCII characters, have a look there: Public Unicode Character Map. And to answer your question, yes, your last \ is likely causing an error, and you don’t need the $ either, also I don’t know what the ~ is doing there. Also the i modifier is to make the comparison case insensitive, so with this parameter you could only have uppercase or lowercase characters instead of the whole set,…