Twitch announced the new custom tag system, and they mentioned in some documentation that tags need to be alphanumeric, no spaces, with support for some accent marks. I am designing an application for managing/automatically applying stream tags, and I want to validate these tags prior to trying to apply them to a stream. Unfortunately, when it comes to regex, allowing accent marks and tags in non-Latin languages (ex. Korean, Japanese) complicates things.
Is there a known/official regex for tags? I tried searching for one to no avail. If not, it would be a good idea for Twitch to release one in their developer docs.
Any help is appreciated, thank you!