Features

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• Flags
• Anchors
• Buffer Boundaries
• Word Boundaries
• Text Segment Boundaries
• Continuation Escape
• Alternatives
• Wildcard
• Character Classes
• Posix Character Classes
• Negated 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
• Quoted Characters
• Quantifiers
• Lazy Quantifiers
• Possessive Quantifiers
• Capturing Groups
• Named Capturing Groups
• Non-Capturing Groups
• Backreferences
• Comments
• Line Comments
• Modifiers
• Branch Reset
• Lookahead
• Lookbehind
• Non-Backtracking Expressions
• Recursion
• Conditional Expressions
• Subroutines
• Callouts
• Backtracking Control Verbs