kkos/oniguruma

Health v2 · maintenance only

Flags: archived no_license

Adoption not part of the score

2523 stars · 350 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Oniguruma is a flexible C regular expression library supporting many regex syntaxes and a wide range of character encodings, historically used by Ruby and other tools. The project officially ended on April 24, 2025, and is no longer maintained.

Use cases

• embed a regex engine in a C or C++ application
• match text with Ruby-style regular expressions
• handle regexes across many character encodings like EUC-JP, Shift_JIS, and GB18030
• use Unicode properties like \pL in pattern matching
• replace POSIX regex with a more feature-rich engine

When to choose

• you need a mature, battle-tested regex engine in C with broad encoding support
• you must match Ruby or Oniguruma-specific regex syntax
• you are pinned to a legacy codebase already using Oniguruma

When to avoid

• starting a new project, since the project ended in April 2025 and receives no security fixes
• you need long-term maintenance and CVE patching
• a modern alternative like PCRE2 or Rust regex fits your needs

Facets

library · maturity abandoned

parser nlp parsers developer-tools c cross-platform cli regular-expressions regex-engine text-processing unicode character-encoding ruby-regex end-of-life natural-language-processing

Member repositories

For agents

markdown · JSON · MCP: product_card(name="kkos/oniguruma")