Feature: Branch Reset
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A Branch Reset resets the subexpression count at the start of each Alternative (|), which affects numbering for Backreferences and captured results returned from the matching algorithm.
Syntax
NOTE: The following syntax is an example based on some of the supported engines. For specific engine support, see Engines.
(?|…)— Resets the subexpression count at the start of each Alternative.
Engines
| Engine | Supported |
|---|---|
| Perl | ✔ |
| PCRE | ✔ |
| Boost.Regex | ✔ |
| .NET | ❌ |
| Oniguruma | ❌ |
| Hyperscan | ❌ |
| ICU | ❌ |
| Glib/GRegex | ❌ |
| ECMAScript | ❌ |