[libc-commits] [libc] [libc] Add regex AST and ExprPool (PR #198728)

[Jeff Bailey via libc-commits]

kaladron wrote:

Also a quick note: I have overcommented the code on purpose: Partly because regex engines are confusing at the best of times, and partly because with this being potentially split into dozens of PRs, I want people to not have to keep so much state in their head and be able to quickly read English.  I'd prefer to keep this, even though it's beyond what LLVM usually likes, and when we're done everything we can prune the comments back.

https://github.com/llvm/llvm-project/pull/198728