foonathan/lexy v2022.12.0 on GitHub

Headline: Unicode 15 support, ability to split a grammar into multiple translation units using lexy::dsl::subgrammar, and significant performance improvements.

Potential breaking changes

Change [lexy::dsl::peek_not() error recovery behavior:
it will now consume the input it matched to recover, which is more useful.
Remove Production parameter from lexy::error_context.
It is replaced by a type-erased lexy::production_info.
lexy::validate, lexy::parse, and lexy::parse_as_tree now type-erase generic error tags prior to invoking the callback.
Use type-erased lexy::production_info instead of Production type in lexy::parse_tree.
This is technically a breaking change, as it may affect overload resolution.

Update Unicode database to Unicode 15.
Use SWAR (SIMD within a register) techniques to optimize token parsing.
Add lexy::dsl::subgrammar to split a grammar into multiple translation units.
Add lexy::dsl::flags and lexy::dsl::flag to parse enum flags.
Add overload of lexy::dsl::position that parses a rule.
This allows using it as branch conditions.
Add lexy::dsl::effect to trigger side-effects during parsing.
Add lexy::subexpression_production to parse a subexpression.
Add lexy::utf8_char_encoding.
Add lexy::parse_tree::remaining_input() and populate it by lexy::parse_as_tree.
Add lexy::make_buffer_from_input function.
Add type-erased version of lexy::error.
Support non-const parse state.

Fix bug where lexy::bind callback does not forward rvalue arguments; they got turned into lvalues instead.
Fix bug where callback composition was not allowed if the final callback returns void.
Fix bug where dsl::quoted(cc.error<foo>) did not use foo as the error.

Full Changelog: v2022.05.1...v2022.12.0