regexp2
rure-go
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regexp2
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Best regexp alternative for Go. Benchmarks. Plots.
regexp2 (1.10.0) - a feature-rich regexp engine for Go. It does not have runtime guarantees like the built-in regexp package, but is compatible with Perl5 and .NET;
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Regex RE2 doesn't support specific Turkish characters.
https://github.com/dlclark/regexp2 I am going to use .NET engine until I find a workaround for stdlib :(
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A CGo-free port of the PCRE2 regular expression library
It's also very useful if you're writing an interpreter which intends to be compatible with something that already needs PCRE support. For example, goja (a JS interpreter) uses regexp2 to support JS's regexp syntax, since JS is not limited to re2.
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Converting ECMA script regex to golang
Compare https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Cheatsheet with https://github.com/dlclark/regexp2 - maybe github.com/dlclark/regexp2 is (almost) what you need.
rure-go
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Best regexp alternative for Go. Benchmarks. Plots.
rure-go (regex 1.9.3) - uses the Rust regex engine with CGo bindings. The downside is a Rust library dependency that needs to be compiled;
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Go performance from version 1.2 to 1.18
Totally agreed: almost all users (me/GoAWK included) want performance and don't care nearly as much about simplicity under the hood. Simplicity of implementation is of value for educational purposes, but we could easily have a small, simple 3rd party package for that. Go's regexp package is kinda too complex for a simple educational demonstration and too simple to be fast. :-)
I actually tried BurntSushi's https://github.com/BurntSushi/rure-go (bindings to Rust's regex engine) with GoAWK and it made regex handling 4-5x as fast for many regexes, despite the CGo overhead. However, rure-go (and CGo in general) is a bit painful to build, so I'm not going to use that. Maybe I'll create a branch for speed freaks who want it.
I've also thought of using https://gitlab.com/cznic/ccgo to convert Mawk's fast regex engine to Go source and see how that performs. Maybe on the next rainy day...
What are some alternatives?
re2 - R interface to Google re2 (C++) regular expression engine
ccgo
elsa - ❄️ Elsa is a minimal, fast and secure runtime for JavaScript and TypeScript written in Go
regex-benchmark - It's just a simple regex benchmark of different programming languages.
rex - Flexible regular expressions constructor for Golang.
hyperscan - High-performance regular expression matching library
regex-automata - A low level regular expression library that uses deterministic finite automata.
gohs - GoLang Binding of HyperScan https://www.hyperscan.io/
regex - An implementation of regular expressions for Rust. This implementation uses finite automata and guarantees linear time matching on all inputs.
go - The Go programming language
go-re2 - Drop-in replacement for regexp using re2, for any Go app
esqueleto - Bare bones, type-safe EDSL for SQL queries on persistent backends.