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feat: publish Regex Tools 0.1.0

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Albrecht Degering
2026-07-24 18:04:21 +02:00
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# Flavour support
| Flavour | Syntax | Execution | Replacement | Captures | Trace | Native offsets |
| ------------ | ------------------------------------------------------------------ | ----------------------------------------------- | ---------------------------------------------------- | -------------------------------------------------- | ----------- | ------------------- |
| ECMAScript | regexpp 4.12.2 grammar; explanations partial/feature-matrix tested | Current browser `RegExp`; feature-matrix tested | Native matches; bounded ECMAScript `GetSubstitution` | Named/numbered; final repeated capture; no history | Unavailable | UTF-16 |
| PCRE2 | Unavailable in release | Technical spike only; not shipped | Unavailable | Unavailable | Unavailable | Planned UTF-8 bytes |
| PCRE | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable |
| Python `re` | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Planned code points |
| Go `regexp` | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Planned UTF-8 bytes |
| Rust `regex` | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Planned UTF-8 bytes |
| .NET | Unavailable | Unavailable | Unavailable | Planned capture history | Unavailable | Planned UTF-16 |
| Java | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Planned UTF-16 |
ECMAScript tests cover `g`, `y`, `u`, internal `d`, zero-length iteration,
named groups, unmatched/empty/repeated groups, lookbehind, backreferences,
Unicode properties, astral input, replacement and result truncation.
Actual browser identity is displayed because ECMAScript behavior can evolve
with the runtime. Syntax acceptance and engine compilation are separate;
neither silently rewrites the pattern.