v1.11.1

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This is a new patch release of regex that fixes compilation on nightly
Rust when the unstable pattern crate feature is enabled. Users on nightly
Rust without this feature enabled are unaffected.

Bug fixes:

• BUG #​1231:
  Fix the Pattern trait implementation as a result of nightly API breakage.

v1.11.0

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===================
This is a new minor release of regex that brings in an update to the
Unicode Character Database. Specifically, this updates the Unicode data
used by regex internally to the version 16 release.

New features:

• FEATURE #​1228:
  Add new regex::SetMatches::matched_all method.
• FEATURE #​1229:
  Update to Unicode Character Database (UCD) version 16.

v1.10.6

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===================
This is a new patch release with a fix for the unstable crate feature that
enables std::str::Pattern trait integration.

Bug fixes:

• BUG #​1219:
  Fix the Pattern trait implementation as a result of nightly API breakage.

v1.10.5

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===================
This is a new patch release with some minor fixes.

Bug fixes:

• BUG #​1203:
  Escape invalid UTF-8 when in the Debug impl of regex::bytes::Match.

v1.10.4

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===================
This is a new patch release with some minor fixes.

• BUG #​1169:
  Fixes a bug with compiling a reverse NFA automaton in regex-automata.
• BUG #​1178:
  Clarifies that when Cow::Borrowed is returned from replace APIs, it is
  equivalent to the input.

v1.10.3

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===================
This is a new patch release that fixes the feature configuration of optional
dependencies, and fixes an unsound use of bounds check elision.

Bug fixes:

• BUG #​1147:
  Set default-features=false for the memchr and aho-corasick dependencies.
• BUG #​1154:
  Fix unsound bounds check elision.

v1.10.2

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===================
This is a new patch release that fixes a search regression where incorrect
matches could be reported.

Bug fixes:

• BUG #​1110:
  Revert broadening of reverse suffix literal optimization introduced in 1.10.1.

v1.10.1

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===================
This is a new patch release with a minor increase in the number of valid
patterns and a broadening of some literal optimizations.

New features:

• FEATURE 04f5d7be:
  Loosen ASCII-compatible rules such that regexes like (?-u:☃) are now allowed.

Performance improvements:

• PERF 8a8d599f:
  Broader the reverse suffix optimization to apply in more cases.

v1.10.0

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===================
This is a new minor release of regex that adds support for start and end
word boundary assertions. That is, \< and \>. The minimum supported Rust
version has also been raised to 1.65, which was released about one year ago.

The new word boundary assertions are:

• \< or \b{start}: a Unicode start-of-word boundary (\W|\A on the left,
  \w on the right).
• \> or \b{end}: a Unicode end-of-word boundary (\w on the left, \W|\z
  on the right)).
• \b{start-half}: half of a Unicode start-of-word boundary (\W|\A on the
  left).
• \b{end-half}: half of a Unicode end-of-word boundary (\W|\z on the
  right).

The \< and \> are GNU extensions to POSIX regexes. They have been added
to the regex crate because they enjoy somewhat broad support in other regex
engines as well (for example, vim). The \b{start} and \b{end} assertions
are aliases for \< and \>, respectively.

The \b{start-half} and \b{end-half} assertions are not found in any
other regex engine (although regex engines with general look-around support
can certainly express them). They were added principally to support the
implementation of word matching in grep programs, where one generally wants to
be a bit more flexible in what is considered a word boundary.

New features:

• FEATURE #​469:
  Add support for \< and \> word boundary assertions.
• FEATURE(regex-automata) #​1031:
  DFAs now have a start_state method that doesn't use an Input.

Performance improvements:

• PERF #​1051:
  Unicode character class operations have been optimized in regex-syntax.
• PERF #​1090:
  Make patterns containing lots of literal characters use less memory.

Bug fixes:

• BUG #​1046:
  Fix a bug that could result in incorrect match spans when using a Unicode word
  boundary and searching non-ASCII strings.
• BUG(regex-syntax) #​1047:
  Fix panics that can occur in Ast->Hir translation (not reachable from regex
  crate).
• BUG(regex-syntax) #​1088:
  Remove guarantees in the API that connect the u flag with a specific HIR
  representation.

regex-automata breaking change release:

This release includes a regex-automata 0.4.0 breaking change release, which
was necessary in order to support the new word boundary assertions. For
example, the Look enum has new variants and the LookSet type now uses u32
instead of u16 to represent a bitset of look-around assertions. These are
overall very minor changes, and most users of regex-automata should be able
to move to 0.4 from 0.3 without any changes at all.

regex-syntax breaking change release:

This release also includes a regex-syntax 0.8.0 breaking change release,
which, like regex-automata, was necessary in order to support the new word
boundary assertions. This release also includes some changes to the Ast
type to reduce heap usage in some cases. If you are using the Ast type
directly, your code may require some minor modifications. Otherwise, users of
regex-syntax 0.7 should be able to migrate to 0.8 without any code changes.

regex-lite release:

The regex-lite 0.1.1 release contains support for the new word boundary
assertions. There are no breaking changes.