Because there was this period of time where the prevailing wisdom was "be liberal in what you accept, and conservative in what you emit" to enable computer syst

Because there was this period of time where the prevailing wisdom was "be liberal in what you accept, and conservative in what you emit" to enable computer systems to handle a wider array of cases. Some people still adhere to it. I don't. If I want to extend a system that's currently in English to also accept Arabic or Farsi / Persian, you better believe I'm sanitizing that input carefully. Otherwise I'm opening up my application to zero width non-joiners[0] and all sorts of random fingerprinting for my English speaking users. I know it's a pain, but I'd rather just do it right. [0] https://www.zachaysan.com/zero https://www.zachaysan.com/zero