@worldsendless RegEx is fun, and isn't emacs specific. :D
I tend to use them in Sublime Text myself.
@trinsec Definitely not emacs specific! My screenshot was emacs, though, and emacs has been perfecting the art of regexp assistance for as long as I've been alive. Some people actually get started writing them in notepad++, or trying to get them right in their sourcecode without having used an assistant. That is something like walking blindfolded and barefoot through a Lego minefield, and is many people's deal-breaking first experience.
@worldsendless That would be a rough explanation, yes. Every MUSH (or in Fediverse terms 'instance') has their own theme and rules. The latest I was on (until I quit like 5 years ago) allowed me to code up a lot of cool stuff with MUSHcode.
@trinsec I looked it up. This? https://www.aresmush.com/mush-101/game-of-words.html