IME it's not just longer, but also more difficult to tell the LLM precisely what you want than to write it yourself if you need a somewhat novel RegExp, which w

IME it's not just longer, but also more difficult to tell the LLM precisely what you want than to write it yourself if you need a somewhat novel RegExp, which won't be all over the training data. I needed one to do something with Markdown which was a very internal BigCo thing to need to do, something I'd never have written without weird requirements in play. It wasn't that tricky, but going back trying to get LLMs to replicate it after the fact from the same description I was working from, they were hopeless. I need to dig that out again and try it on the latest models.