Oniguruma

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Oniguruma

Original author(s)	K. Kosako
Initial release	25 February 2002
Stable release	6.9.10[1]  / 1 January 2025; 24 days ago (1 January 2025)
Repository	github.com/kkos/oniguruma
Written in	C
Operating system	Cross-platform
Type	regular expression library
License	2-clause BSD License

Oniguruma (鬼車) is a free and open-source regular expression library that supports a variety of character encodings, written by K. Kosako. The Ruby programming language, in version 1.9, as well as PHP's multi-byte string module (since PHP5), use Oniguruma as their regular expression engine.^[2] It is also used in products such as Atom,^[3] EDK2 UEFI,^[4] GyazMail, Take Command Console, Tera Term, TextMate, SubEthaEdit and jq.

There is also a forked Oniguruma version called "Onigmo" (Oniguruma-mod) which includes some features introduced in Perl 5.10+.^[5] Ruby since version 2.0 has also switched to it^[6] and features have been backported from ruby to Onigmo. Take Command Console since version 20 has also switched to Onigmo.^[7]