I haven't used rx in Elisp specifically, but in my work in R, I've started using the rex package almost exclusively for writing regexes. It's the same idea: you

I haven't used rx in Elisp specifically, but in my work in R, I've started using the rex package almost exclusively for writing regexes. It's the same idea: you build a regex programmatically instead of as a string, so you no longer need to think about syntax, only semantics, because the syntax is the same as the host language.