Pattern Syntax

Table of Contents

• Introduction
• Delimiters
• Meta-characters
• Escape sequences
• Unicode character properties
• Anchors
• Dot
• Character classes
• Alternation
• Internal option setting
• Subpatterns
• Repetition
• Back references
• Assertions
• Once-only subpatterns
• Conditional subpatterns
• Comments
• Recursive patterns
• Performance