Feature: Negated Posix Character Classes
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A Negated Posix Character Class is a member of a Character Class set that specifies a named, pre-defined set of excluded characters.
Syntax
NOTE: The following syntax is an example based on some of the supported engines. For specific engine support, see Engines.
[[:^name:]]— Where name is in a set of predefined names. Matches any character not in the set.
Engines
| Engine | Supported |
|---|---|
| Perl | ✔ |
| PCRE | ✔ |
| Boost.Regex | ❌ |
| .NET | ❌ |
| Oniguruma | ✔ |
| Hyperscan | ✔ |
| ICU | ❌ |
| Glib/GRegex | ✔ |
| ECMAScript | ❌ |
See Also
- Character Classes
- Posix Character Classes
- Collating Elements
- Equivalence Classes
- Character Class Escapes
- Line Endings Escape
- Character Property Escapes
- Character Class Nested Set
- Character Class Intersection
- Character Class Union
- Character Class Subtraction
- Character Class Symmetric Difference
- Character Class Complement