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atomic_groups_for_speed

⚡ Boost Performance with Atomic Groups​

Atomic groups (?>...) prevent backtracking into the group once matched, eliminating catastrophic backtracking for certain patterns. Use them around greedy alternatives when backtracking isn’t needed.

# Without atomic group—can backtrack excessively
bad = /(\d+|\d{1,3})XYZ/
# With atomic group—no backtracking inside
good = /(?>\d+|\d{1,3})XYZ/

p bad.match?("123XYZ")  # => true
p good.match?("123XYZ") # => true

Apply atomic groups to sanitize complex alternations and protect performance.