go/doc/next/6-stdlib/99-minor/regexp/syntax/70781.md

The `\p{name}` and `\P{name}` character class syntaxes now accept the names
Any, ASCII, Assigned, Cn, and LC, as well as Unicode category aliases like `\p{Letter}` for `\pL`.
Following [Unicode TR18](https://unicode.org/reports/tr18/), they also now use
case-insensitive name lookups, ignoring spaces, underscores, and hyphens.
regexp/syntax: recognize category aliases like \p{Letter} The Unicode specification defines aliases for some of the general category names. For example the category "L" has alias "Letter". The regexp package supports \p{L} but not \p{Letter}, because there was nothing in the Unicode tables that lets regexp know about Letter. Now that package unicode provides CategoryAliases (see #70780), we can use it to provide \p{Letter} as well. This is the only feature missing from making package regexp suitable for use in a JSON-API Schema implementation. (The official test suite includes usage of aliases like \p{Letter} instead of \p{L}.) For better conformity with Unicode TR18, also accept case-insensitive matches for names and ignore underscores, hyphens, and spaces; and add Any, ASCII, and Assigned. Fixes #70781. Change-Id: I50ff024d99255338fa8d92663881acb47f1e92a5 Reviewed-on: https://go-review.googlesource.com/c/go/+/641377 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Alan Donovan <adonovan@google.com> 2025-01-08 11:27:07 -05:00			The `\p{name}` and `\P{name}` character class syntaxes now accept the names
			Any, ASCII, Assigned, Cn, and LC, as well as Unicode category aliases like `\p{Letter}` for `\pL`.
			`Following [Unicode TR18](https://unicode.org/reports/tr18/), they also now use`
			`case-insensitive name lookups, ignoring spaces, underscores, and hyphens.`