Yeah, spot on. This is what the code looks like: https://github.com/loadingalias/rscrypto/blob/4e24772a54fef3...

Look at these section comments that LLMs love ("// ─── Rotation helpers ────")

Now you sometimes see these section comments in legacy codebases that have very long files. What you don't see people use is U+2500 BOX DRAWINGS LIGHT HORIZONTAL unicode characters padded out just right to look pretty. We humans have regular keyboards, but these AIs are trained to output emojis and pretty unicode.