Sourced from regexp_parser's changelog.

[2.11.1] - 2025-08-08 - Janosch Müller

Fixed

• restored compatibility with Ruby < 2.6, broken in regexp_parser v2.11.0
  • thanks to DanielFinkWoven for the report

[2.11.0] - 2025-08-03 - Janosch Müller

Added

• a new token :escape, :utf8_hex and expression EscapeSequence::UTF8Hex
  • used for UTF-8 hex escapes, e.g. \xE2\x82\xAC representing U+20AC "€"

Fixed

• detection of numeric backrefs > 9, e.g. ((((((((((foo))))))))))\10
  • these are only backrefs in Ruby if sufficient groups have been opened
  • they were previously always scanned as octal or literal escapes

• 4751e56 Release v2.11.1
• af406b5 Add ruby-head unicode properties
• 02bb991 Remove redundant self
• 23a9066 Fix an accessor for Ruby <= 2.5
• 7a71a96 Fix compatibility with old Rubies
• 3084c17 Remove scheduled tests ...
• 7d911b1 Simplify ragel task
• 65c624d Release v2.11.0
• 61bfa63 Update years [ci skip]
• ed41743 Merge pull request #97 from ammar/fix-multidigit-backrefs
• Additional commits viewable in compare view

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