How can Z͎̠͗ͣḁ̵͙̑l͖͙̫̲̉̃ͦ̾͊ͬ̀g͔̤̞͓̐̓̒̽o͓̳͇̔ͥ text be prevented?

Question

I\'ve read about how Zalgo text works, and I\'m looking to learn how a chat or forum software could prevent that kind of annoyance. More precisely, what is the complete set

Answer 1

You can get rid off Zalgo text in your application using strip-combining-marks by Mathias Bynens.

The module strip-combining-marks is available for browsers (via Bower) and Node.js applications (via npm).

Here is an example on how to use it with npm:

var stripCombiningMarks = require("strip-combining-marks");
var zalgoText = 'U̼̥̻̮͍͖n͠i͏c̯̮o̬̝̠͉̤d͖͟e̫̟̗͟ͅ';
var stripptedText = stripCombiningMarks(zalgoText); // "Unicode"