Feature: Modifiers
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Modifiers allow you to change the currently active RegExp flags within a subexpression.
Syntax
NOTE: The following syntax is an example based on some of the supported engines. For specific engine support, see Engines.
(?imsx-imsx)- Sets or unsets (using-) the specified RegExp flags starting at the current position until the next closing)or the end of the pattern. Example:(?-i)A(?i)B(?-i)CmatchesABC,AbC.(?imsx-imsx:…)- Sets or unsets (using-) the specified RegExp flags for the subexpression. Example:(?-i:A(?i:B)C)matchesABC,AbC.
Engines
| Engine | Supported |
|---|---|
| Perl | ✔ |
| PCRE | ✔ |
| Boost.Regex | ✔ |
| .NET | ✔ |
| Oniguruma | ✔ |
| Hyperscan | ✔ |
| ICU | ✔ |
| Glib/GRegex | ✔ |
| ECMAScript | ❌ |