JS regex evolution tweaks

README.md

@@ -316,13 +316,13 @@ Many regexes found online are low quality. It's risky to use regexes you don't f
   - Getter `RegExp.prototype.flags`.
   - Can subclass `RegExp`, plus `RegExp.prototype[Symbol.match`/`replace`/`search`/`split]` and `RegExp[Symbol.species]` for use in subclasses.
   - Use `RegExp` to copy a regex, optionally with new flags.
-- ES2018 added [flag `s`](https://github.com/tc39/proposal-regexp-dotall-flag) (`dotAll`), [lookbehind](https://github.com/tc39/proposal-regexp-lookbehind), [named capture](https://github.com/tc39/proposal-regexp-named-groups), and [Unicode properties](https://github.com/tc39/proposal-regexp-unicode-property-escapes) via `\p{…}` and `\P{…}` behind flag `u` (see [list](https://github.com/mathiasbynens/regexpu-core/blob/main/property-escapes.md)).
+- ES2018 added [flag `s`](https://github.com/tc39/proposal-regexp-dotall-flag) (`dotAll`), [lookbehind](https://github.com/tc39/proposal-regexp-lookbehind), [named capture](https://github.com/tc39/proposal-regexp-named-groups), and (behind flag `u`) [Unicode properties](https://github.com/tc39/proposal-regexp-unicode-property-escapes) via `\p{…}` and `\P{…}` (see [list](https://github.com/mathiasbynens/regexpu-core/blob/main/property-escapes.md)).
 - ES2020 added string method [`matchAll`](https://github.com/tc39/proposal-string-matchall) (which returns an iterator), plus `RegExp.prototype[Symbol.matchAll]`.
+- ES2021 added string method [`replaceAll`](https://github.com/tc39/proposal-string-replaceall). When given a regex, the only difference from ES3's `replace` is that it throws if not using flag `g`.
 - ES2022 added [flag `d`](https://github.com/tc39/proposal-regexp-match-indices) (`hasIndices`), which provides start/end indices for matched substrings.
 - ES2024 added [flag `v`](https://github.com/tc39/proposal-regexp-v-flag) (`unicodeSets`) \[[*explainer*](https://v8.dev/features/regexp-v-flag)] as an upgrade to flag `u` (can't be used together), which adds a set of multicharacter "properties of strings" to `\p{…}`, multicharacter elements within character classes via `\p{…}` and `\q{…|…}`, nested character classes, set operators `[…--…]` and `[…&&…]`, and different escaping rules within character classes. It also fixes case-insensitive matching for doubly-negated `[^\P{…}]`.
 
-> Each edition from ES2019 to ES2023 added additional Unicode properties that can be used via `\p{…}` and `\P{…}` (see [lists](https://github.com/eslint-community/regexpp/blob/main/src/unicode/properties.ts)). ES2021 added [`replaceAll`](https://github.com/tc39/proposal-string-replaceall), which optionally accepts a `RegExp`, but it behaves identically to ES3's `replace` when given a regex as the search.
-
+> Each edition from ES2019 to ES2023 added additional Unicode properties that can be used via `\p{…}` and `\P{…}` (see [lists](https://github.com/eslint-community/regexpp/blob/main/src/unicode/properties.ts)).
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   <summary>➕ <b>See also</b></summary>
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