Issues

• coregex.MustCompile(^x(a|bc)).MatchString("xbc") // false

  coregx/coregex#166 · Filter by author vmihailenco opened on Aug 24, 2026

• meta: avoid allocating a PikeVM when no forward DFA is built

  coregx/coregex#164 · Filter by author dwisiswant0 opened on Aug 11, 2026

• coregex FindAllStringIndex slower than stdlib

  type: performance
  coregx/coregex#153 · Filter by author tjbrains opened on Mar 25, 2026
  4

  

• perf: tracking — Aho-Corasick 2x performance gap (coregx/ahocorasick#1)

  area: prefilterbench: vs-rustpriority: hightype: performance
  coregx/coregex#144 · Filter by author kolkov opened on Mar 18, 2026
  

• perf: excessive memory usage with multiple patterns on large inputs (237MB vs 28MB stdlib)

  area: nfapriority: mediumtype: performance
  coregx/coregex#133 · Filter by author kolkov opened on Mar 10, 2026
  1

• perf: Teddy SIMD 8.6x slower than Rust due to Go/assembly boundary overhead

  area: prefilterpriority: highstrategy: teddytype: performance
  coregx/coregex#120 · Filter by author kolkov opened on Feb 16, 2026
  4

  

• perf: SIMD acceleration for sparse char_class matches

  arch: amd64area: simdeffort: 8priority: lowstrategy: char-classtype: enhancement
  coregx/coregex#64 · Filter by author kolkov opened on Jan 6, 2026
  2

• v0.9.0+: ARM NEON SIMD support

  arch: arm64area: simdeffort: 13priority: lowtype: feature
  coregx/coregex#23 · Filter by author kolkov opened on Dec 7, 2025

• v0.9.0: UTF-8 Automata Optimization

  area: nfaeffort: 8priority: mediumtype: enhancement
  coregx/coregex#21 · Filter by author kolkov opened on Dec 7, 2025

• v1.0: Remove Regex, keep only Regexp for clarity

  area: apicompat: stdlibeffort: 3priority: mediumtype: refactor
  coregx/coregex#9 · Filter by author kolkov opened on Dec 3, 2025