If anyone here is interested in writing a Twitch chat client or bot for Linux and with C (or any language that can call into C libraries), you might be interested in a project I’ve been working on the last couple of weeks and that I now consider ready for use:
libtwirc, a Linux Twitch IRC library written in C.
The wiki on github should have enough information to get you started, although I’m still fleshing it out. If you have questions or any kind of feedback, I’d love to hear from you. Feel free to contact me here or on Twitch or open up issues on github if you find bugs or have feature requests.
I hope this will come in handy for someone!