THE EXPECTATIONS ARE EXTRA REGULAR

Warning: Extra Regular Expressions Ahead

Caution: this page contains EXTRA REGULAR EXPRESSIONS. Prolonged exposure may cause:

Dizziness from excessive use of parentheses
Disorientation from recursive backtracking
Temporary loss of sanity from trying to understand

Proceed with caution, brave adventurer!

Extra Regular Expressions: A Gentle Guide Regular Expressions: The Normal Version