Files
mruby-mruby/mrbgems/mruby-regexp/mrblib
Yukihiro "Matz" Matsumoto 8624764bca mruby-regexp: implement gsub/sub/scan core in C
Move the match loop for non-block gsub, sub, and scan from Ruby
to C. Key improvements:
- re_exec called directly in a loop without MatchData per match
- MatchData created only once (for $~ of the last match)
- Replacement \-escapes processed in C (apply_replacement)
- No intermediate string objects for pre_match/post_match
- Block variants remain in Ruby to avoid VM callbacks

Performance improvement (vs CRuby ratio):
  gsub simple: 5.0x -> 2.9x
  scan words:  5.8x -> 1.9x

Co-authored-by: Claude <noreply@anthropic.com>
2026-04-23 19:25:34 +09:00
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