Improve the handling of regular expressions#201
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sylvestre merged 2 commits intouutils:mainfrom Dec 16, 2025
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #201 +/- ##
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- Coverage 82.31% 82.14% -0.17%
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Files 13 13
Lines 5371 5322 -49
Branches 293 293
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- Hits 4421 4372 -49
Misses 948 948
Partials 2 2
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CodSpeed Performance ReportMerging #201 will degrade performances by 10.99%Comparing Summary
Benchmarks breakdown
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It's difficult to make quoting work reliably and portably with the Windows shell, so in most casesEsupply sed commands as files.
Keep using regex_fancy for regexes containing backreferences.
This removes a complex unneeded matcher selection RE and also
provides an overall small performance boost.
access-log-no-del pre-use-bytes is 1.02 times faster than use-re-bytes
access-log-all-del use-re-bytes is 1.02 times faster than pre-use-bytes
access-log-translit pre-use-bytes is similarly fast as use-re-bytes
access-log-complex-sub pre-use-bytes is similarly fast as use-re-bytes
access-log-append pre-use-bytes is similarly fast as use-re-bytes
remove-cr use-re-bytes is 1.08 times faster than pre-use-bytes
genome-subst use-re-bytes is 1.05 times faster than pre-use-bytes
number-fix pre-use-bytes is 1.02 times faster than use-re-bytes
long-script use-re-bytes is 1.01 times faster than pre-use-bytes
hanoi pre-use-bytes is similarly fast as use-re-bytes
factorial use-re-bytes is 1.03 times faster than pre-use-bytes
Suggested by: Andrew Gallant @BurntSushi
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