From 1b7226134393c9aee8b9b6acb1acb80b0e927a40 Mon Sep 17 00:00:00 2001 From: Andrew Gallant Date: Thu, 20 Apr 2023 17:52:52 -0400 Subject: [PATCH] release: 1.8.0 1.8.0 (2023-04-20) ================== This is a sizeable release that will be soon followed by another sizeable release. Both of them will combined close over 40 existing issues and PRs. This first release, despite its size, essentially represent preparatory work for the second release, which will be even bigger. Namely, this release: * Increases the MSRV to Rust 1.60.0, which was released about 1 year ago. * Upgrades its dependency on `aho-corasick` to the recently release 1.0 version. * Upgrades its dependency on `regex-syntax` to the simultaneously released `0.7` version. The changes to `regex-syntax` principally revolve around a rewrite of its literal extraction code and a number of simplifications and optimizations to its high-level intermediate representation (HIR). The second release, which will follow ~shortly after the release above, will contain a soup-to-nuts rewrite of every regex engine. This will be done by bringing [`regex-automata`](https://github.com/BurntSushi/regex-automata) into this repository, and then changing the `regex` crate to be nothing but an API shim layer on top of `regex-automata`'s API. These tandem releases are the culmination of about 3 years of on-and-off work that [began in earnest in March 2020](https://github.com/rust-lang/regex/issues/656). Because of the scale of changes involved in these releases, I would love to hear about your experience. Especially if you notice undocumented changes in behavior or performance changes (positive *or* negative). Most changes in the first release are listed below. For more details, please see the commit log, which reflects a linear and decently documented history of all changes. New features: * [FEATURE #501](https://github.com/rust-lang/regex/issues/501): Permit many more characters to be escaped, even if they have no significance. More specifically, any ASCII character except for `[0-9A-Za-z<>]` can now be escaped. Also, a new routine, `is_escapeable_character`, has been added to `regex-syntax` to query whether a character is escapeable or not. * [FEATURE #547](https://github.com/rust-lang/regex/issues/547): Add `Regex::captures_at`. This filles a hole in the API, but doesn't otherwise introduce any new expressive power. * [FEATURE #595](https://github.com/rust-lang/regex/issues/595): Capture group names are now Unicode-aware. They can now begin with either a `_` or any "alphabetic" codepoint. After the first codepoint, subsequent codepoints can be any sequence of alpha-numeric codepoints, along with `_`, `.`, `[` and `]`. Note that replacement syntax has not changed. * [FEATURE #810](https://github.com/rust-lang/regex/issues/810): Add `Match::is_empty` and `Match::len` APIs. * [FEATURE #905](https://github.com/rust-lang/regex/issues/905): Add an `impl Default for RegexSet`, with the default being the empty set. * [FEATURE #908](https://github.com/rust-lang/regex/issues/908): A new method, `Regex::static_captures_len`, has been added which returns the number of capture groups in the pattern if and only if every possible match always contains the same number of matching groups. * [FEATURE #955](https://github.com/rust-lang/regex/issues/955): Named captures can now be written as `(?re)` in addition to `(?Pre)`. * FEATURE: `regex-syntax` now supports empty character classes. * FEATURE: `regex-syntax` now has an optional `std` feature. (This will come to `regex` in the second release.) * FEATURE: The `Hir` type in `regex-syntax` has had a number of simplifications made to it. * FEATURE: `regex-syntax` has support for a new `R` flag for enabling CRLF mode. This will be supported in `regex` proper in the second release. * FEATURE: `regex-syntax` now has proper support for "regex that never matches" via `Hir::fail()`. * FEATURE: The `hir::literal` module of `regex-syntax` has been completely re-worked. It now has more documentation, examples and advice. * FEATURE: The `allow_invalid_utf8` option in `regex-syntax` has been renamed to `utf8`, and the meaning of the boolean has been flipped. Performance improvements: * PERF: The upgrade to `aho-corasick 1.0` may improve performance in some cases. It's difficult to characterize exactly which patterns this might impact, but if there are a small number of longish (>= 4 bytes) prefix literals, then it might be faster than before. Bug fixes: * [BUG #514](https://github.com/rust-lang/regex/issues/514): Improve `Debug` impl for `Match` so that it doesn't show the entire haystack. * BUGS [#516](https://github.com/rust-lang/regex/issues/516), [#731](https://github.com/rust-lang/regex/issues/731): Fix a number of issues with printing `Hir` values as regex patterns. * [BUG #610](https://github.com/rust-lang/regex/issues/610): Add explicit example of `foo|bar` in the regex syntax docs. * [BUG #625](https://github.com/rust-lang/regex/issues/625): Clarify that `SetMatches::len` does not (regretably) refer to the number of matches in the set. * [BUG #660](https://github.com/rust-lang/regex/issues/660): Clarify "verbose mode" in regex syntax documentation. * BUG [#738](https://github.com/rust-lang/regex/issues/738), [#950](https://github.com/rust-lang/regex/issues/950): Fix `CaptureLocations::get` so that it never panics. * [BUG #747](https://github.com/rust-lang/regex/issues/747): Clarify documentation for `Regex::shortest_match`. * [BUG #835](https://github.com/rust-lang/regex/issues/835): Fix `\p{Sc}` so that it is equivalent to `\p{Currency_Symbol}`. * [BUG #846](https://github.com/rust-lang/regex/issues/846): Add more clarifying documentation to the `CompiledTooBig` error variant. * [BUG #854](https://github.com/rust-lang/regex/issues/854): Clarify that `regex::Regex` searches as if the haystack is a sequence of Unicode scalar values. * [BUG #884](https://github.com/rust-lang/regex/issues/884): Replace `__Nonexhaustive` variants with `#[non_exhaustive]` attribute. * [BUG #893](https://github.com/rust-lang/regex/pull/893): Optimize case folding since it can get quite slow in some pathological cases. * [BUG #895](https://github.com/rust-lang/regex/issues/895): Reject `(?-u:\W)` in `regex::Regex` APIs. * [BUG #942](https://github.com/rust-lang/regex/issues/942): Add a missing `void` keyword to indicate "no parameters" in C API. * [BUG #965](https://github.com/rust-lang/regex/issues/965): Fix `\p{Lc}` so that it is equivalent to `\p{Cased_Letter}`. * [BUG #975](https://github.com/rust-lang/regex/issues/975): Clarify documentation for `\pX` syntax. --- CHANGELOG.md | 4 ++-- Cargo.toml | 6 +++--- bench/Cargo.toml | 4 ++-- regex-syntax/Cargo.toml | 2 +- 4 files changed, 8 insertions(+), 8 deletions(-) diff --git a/CHANGELOG.md b/CHANGELOG.md index 32616c0b5..b89df723b 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,5 +1,5 @@ -1.8.0 (TBD) -=========== +1.8.0 (2023-04-20) +================== This is a sizeable release that will be soon followed by another sizeable release. Both of them will combined close over 40 existing issues and PRs. diff --git a/Cargo.toml b/Cargo.toml index f4c70aa1a..6c523f6f1 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "regex" -version = "1.7.3" #:version +version = "1.8.0" #:version authors = ["The Rust Project Developers"] license = "MIT OR Apache-2.0" readme = "README.md" @@ -112,13 +112,13 @@ optional = true # For skipping along search text quickly when a leading byte is known. [dependencies.memchr] -version = "2.4.0" +version = "2.5.0" optional = true # For parsing regular expressions. [dependencies.regex-syntax] path = "regex-syntax" -version = "0.6.29" +version = "0.7.0" default-features = false [dev-dependencies] diff --git a/bench/Cargo.toml b/bench/Cargo.toml index 63ee241ba..5dfcb93cc 100644 --- a/bench/Cargo.toml +++ b/bench/Cargo.toml @@ -19,8 +19,8 @@ libc = "0.2" onig = { version = "3", optional = true } libpcre-sys = { version = "0.2", optional = true } memmap = "0.6.2" -regex = { version = "1", path = ".." } -regex-syntax = { version = "0.6", path = "../regex-syntax" } +regex = { version = "1.8.0", path = ".." } +regex-syntax = { version = "0.7.0", path = "../regex-syntax" } serde = { version = "1", features = ["derive"] } cfg-if = "0.1" diff --git a/regex-syntax/Cargo.toml b/regex-syntax/Cargo.toml index 6ae9b8485..b2c85baba 100644 --- a/regex-syntax/Cargo.toml +++ b/regex-syntax/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "regex-syntax" -version = "0.6.29" #:version +version = "0.7.0" #:version authors = ["The Rust Project Developers"] license = "MIT OR Apache-2.0" repository = "https://github.com/rust-lang/regex"