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3 Commits

Author SHA1 Message Date
Yukihiro "Matz" Matsumoto 101f8c69a1 mruby-regexp: implement fixed-length lookbehind assertions 
Add (?<=...) positive and (?<!...) negative lookbehind support.
The sub-pattern must have a fixed byte length (no quantifiers or
alternation), computed at compile time and stored in the instruction.
At execution time, the engine backs up by that many bytes and runs
the sub-pattern forward. Maximum lookbehind length is 255 bytes.

Co-authored-by: Claude <noreply@anthropic.com>
 2026-04-23 19:25:32 +09:00
Yukihiro "Matz" Matsumoto 3f627c0d7d mruby-regexp: update README for x flag support 
Co-authored-by: Claude <noreply@anthropic.com>
 2026-04-23 19:25:30 +09:00
Yukihiro "Matz" Matsumoto 117af56bc2 mruby-regexp: add README.md 
document supported syntax, Ruby API, engine architecture,
limitations, configuration, and license.

Co-authored-by: Claude <noreply@anthropic.com>
 2026-04-23 19:25:29 +09:00