Issues

• Diacritics sensitive flag

  rust-lang/regex#1398 · Filter by author bkmks opened on Sep 26, 2026

• Negated code points near the surrogate gap still match

  rust-lang/regex#1397 · Filter by author Lucretiel opened on Sep 24, 2026

• bug(syntax): Ord on ast::Position is inconsistent with Eq

  rust-lang/regex#1393 · Filter by author langston-barrett opened on Sep 8, 2026

• bug(syntax): Panic when Parser is used twice

  rust-lang/regex#1392 · Filter by author langston-barrett opened on Sep 8, 2026

• Feature request: sticky matching without relying on slicing, so that Match range corresponds to unsliced string

  rust-lang/regex#1390 · Filter by author jedwards1211 opened on Aug 27, 2026

• Significant memory usage regression in regex-automata 0.4.17

  rust-lang/regex#1389 · Filter by author Noah-Kennedy opened on Aug 24, 2026

• Unicode 17?

  rust-lang/regex#1387 · Filter by author ajvondrak opened on Aug 11, 2026
  1

• Incorrect alternation chosen when .*.* occurs in pattern

  rust-lang/regex#1360 · Filter by author orlp opened on Jun 3, 2026
  1

• regex and regex_lite disagree on whether repetition operators associate with flag-setters

  rust-lang/regex#1359 · Filter by author orlp opened on Jun 3, 2026
  1

• 'Overlapping' empty match suppression algorithm hides real non-empty matches

  rust-lang/regex#1358 · Filter by author orlp opened on Jun 2, 2026
  1

• regex and regex_lite disagree on lazy empty matches

  rust-lang/regex#1357 · Filter by author orlp opened on Jun 2, 2026
  4

• Provide an API for comparing the equivalence of two Regex values (while permitting false negatives)

  enhancementquestion
  rust-lang/regex#1349 · Filter by author dolezvo1 opened on May 18, 2026
  4

• Maybe a way to reduce binary size cost by CASE_FOLDING_SIMPLE

  rust-lang/regex#1347 · Filter by author flyingcat opened on May 14, 2026

• BoundedBacktracker::is_match panics on empty haystack when max_haystack_len() saturates to 0

  rust-lang/regex#1344 · Filter by author Stranger6667 opened on Apr 29, 2026

• Are ::bytes::RegexSet and ::bytes::Regex coming to regex-lite?

  rust-lang/regex#1338 · Filter by author nathanielmanistaatgoogle opened on Mar 17, 2026

• Question: Do PCRE2 leftmost-first semantics include capture group positions?

  rust-lang/regex#1336 · Filter by author wareya opened on Mar 11, 2026

• regex_syntax::escape() does not escape whitespace

  question
  rust-lang/regex#1323 · Filter by author H2CO3 opened on Jan 14, 2026
  9

• De/serializing one-pass DFAs

  enhancementquestion
  rust-lang/regex#1322 · Filter by author LoganDark opened on Jan 1, 2026
  1

• Compiling some unicode regexes is 2.5x slower

  enhancementquestion
  rust-lang/regex#1316 · Filter by author jrmuizel opened on Nov 14, 2025
  2

• a prefilter should only be constructed if we know we'll use it

  rust-lang/regex#1311 · Filter by author BurntSushi opened on Oct 30, 2025

• fix runaway generation of literals for case insensitive regexes

  bug
  rust-lang/regex#1310 · Filter by author BurntSushi opened on Oct 30, 2025

• investigate optimizations for patterns like (?m)^\w+$

  enhancement
  rust-lang/regex#1301 · Filter by author BurntSushi opened on Oct 7, 2025

• Feature: Iterator over matching and non-matching parts of a haystack

  rust-lang/regex#1296 · Filter by author LunarLambda opened on Sep 22, 2025
  1

• Linear Time Lookaround

  rust-lang/regex#1273 · Filter by author nyarly opened on Jun 26, 2025
  4

• regex-syntax: some way to retain the AST Span of some punctuation marks?

  rust-lang/regex#1271 · Filter by author kennytm opened on Jun 13, 2025
  2