Use StringScanner instead of String#scan to improve block parsing performance #167
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This PR replaces
scaninparse_block_into_rule_sets!withStringScanner- a more performant API for tokenizing strings.Tenderlove had a post last year about this.
On our benchmarks this shows a 18% improvement in performance measured for overall
add_block!. The code has been in production for around 3 years now, unfortunately making changes public takes additional effort.Pre-Merge Checklist