Update fancy-regex requirement from 0.17 to 0.18

[dependabot]

Updates the requirements on fancy-regex to permit the latest version.

Release notes

Sourced from fancy-regex's releases.

0.18.0

Added

• Add support for \N to mean any character except newline, for Oniguruma compatibility (#206)
• Add support for (*FAIL) backtracking control verb (#210)
• Add support for more \p{...} and \P{...} aliases, for Oniguruma compatibility (#207)
• Add support for word boundaries and zero-length fancy patterns inside variable lookbehinds (at top level) (#216)
• Add support for \R to mean general newline, matching all common line break characters, treating \r\n atomically (#220)
• Add support for the regex crate's (?R) CRLF mode flag (#238)
• Add support for subroutine calls (including recursion up to 20 levels deep, matching Oniguruma behavior) \g<1> (#230)
• Add support for Oniguruma's absent repeater (?~abc) (#233)
• Add support for ignoring empty matches (#240)
• Add support for treating unnamed capture groups as non-capturing when named groups exist (#241)

Changed

• RegexBuilder can now build multiple patterns with the same options (#213)
• Parsing of capture group names is now more lenient (#241)

Fixed

• Fixed bug with parsing nested character classes containing unescaped ] (#211)

Changelog

Sourced from fancy-regex's changelog.

[0.18.0] - 2026-04-24

Added

• Add support for \N to mean any character except newline, for Oniguruma compatibility (#206)
• Add support for (*FAIL) backtracking control verb (#210)
• Add support for more \p{...} and \P{...} aliases, for Oniguruma compatibility (#207)
• Add support for word boundaries and zero-length fancy patterns inside variable lookbehinds (at top level) (#216)
• Add support for \R to mean general newline, matching all common line break characters, treating \r\n atomically (#220)
• Add support for the regex crate's (?R) CRLF mode flag (#238)
• Add support for subroutine calls (including recursion up to 20 levels deep, matching Oniguruma behavior) \g<1> (#230)
• Add support for Oniguruma's absent repeater (?~abc) (#233)
• Add support for ignoring empty matches (#240)
• Add support for treating unnamed capture groups as non-capturing when named groups exist (#241)

Changed

• RegexBuilder can now build multiple patterns with the same options (#213)
• Parsing of capture group names is now more lenient (#241)

Fixed

• Fixed bug with parsing nested character classes containing unescaped ] (#211)

[0.17.0] - 2025-12-13

Added

• Add support for "easy" variable-length lookbehinds (enabled via new feature flag) (#194, #196)
• Add support for more word boundaries: \b{start}, \b{end}, \b{start-half}, \b{end-half} (#193)
• Allow {...} repetition syntax after assertions (except in Oniguruma mode) (#193)
• Add Oniguruma mode flag to playground (#199)

Changed

• Rewrite Theory section of Readme in a more formal style (#187)
• Box CompileError in Error enum to reduce size (#204)
• Bail out early when \G fails to match for increased performance (#198)
• Handle ignore_whitespace case in parsing escape sequences (#193)
• Add tests to ensure that Regex is Send and Sync (#195)

Fixed

• Fix clippy lint warnings (#204)

[0.16.2] - 2025-09-19

Added

• Add an "oniguruma mode" flag to control whether \< and \> are treated as literals or word-boundary assertions. (#186)
• Add support for const-size backrefs in lookbehinds. (#182)

Changed

• A few small internal changes which allowed us to expose a web-based playground for fancy-regex. (#181)

Fixed

• Fix behavior of repetition on an empty match. (#179)
• Always return the original input pattern when as_str is called. (#185)
• Fix panic when matching non-ascii text as part of a case insensitive backref. (#189)
• The toy example wasn't always showing the correct analysis or compiled program when optimizations were applied. (#181)

[0.16.1] - 2025-08-02

Fixed

• Fixed a bug whereby sometimes a backreference to a non-existing capture group would compile successfully when it should fail, causing a panic in the VM when trying to match the regex. (#174)

... (truncated)

Commits

• 895301d Version 0.18.0
• 940398a add note about Oniguruma mode
• adcc193 Merge pull request #241 from fancy-regex/parser_resolver
• f68a160 cargo fmt
• 8a7e2fb cargo clippy fix
• e9b08c4 fix compiler warnings after merging main branch in
• ed280d7 Merge branch 'main' into parser_resolver
• f766d15 Merge pull request #245 from stefanobaghino/fix-captures-from-pos-past-end
• 1440293 lib: return Ok(None) when search pos exceeds haystack length
• 8d10d22 Merge pull request #244 from fancy-regex/find_not_empty
• Additional commits viewable in compare view

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