Punctuation

[PallHaraldsson]

[skip ci]

[PallHaraldsson]

I saw a missing period, but I mainly added a PR do add a question about the doc:

This is especially a problem because the built-in Regex support in Julia incorrectly passes a flag saying that the argument has already been checked and is a valid UTF-8 sequence. Skipping that check in PCRE2 does make regex matching much faster, however it leaves you open to attacks if your are using regex on unchecked string input.

By attack, what do you mean, a security issue? Which kind, only a (denial-of-service or) information leakage?

Your type fixes it, then the type is validated UTF-8 (not even WTF-8 or other variant allowed?), and that flag is ok. If not for the default String, then you can validate manually, and it would also be ok. Or skip the flag and not validate, and also ok, just slower?

Another thing, do you have a type that autodetects? We want to take in UTF-8 for sure, but e.g. UTF-16 with the same type, i.e. detect it, and convert to UTF-8 as you read in the data?