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deps(regex): take perex 0.1.4 — required-text search starts at the requested start #10201

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proggeramlug wants to merge 2 commits into from
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deps(regex): take perex 0.1.4 — required-text search starts at the requested start #10201

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f594bff
deps: take perex 0.1.4 (required-text search from the requested start)
Sep 13, 2026
b141b85
changelog: add fragment for #10201
Sep 13, 2026
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4 changes: 2 additions & 2 deletions Cargo.lock
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2 changes: 1 addition & 1 deletion Cargo.toml
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Expand Up @@ -399,7 +399,7 @@ chrono = "0.4"
regex = "1.12"
aho-corasick = "1.1"
# The single regular-expression engine, through crates/perry-perex.
perex = "0.1.3"
perex = "0.1.4"
hex = "0.4"
tempfile = "3"
itoa = "1.0"
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3 changes: 3 additions & 0 deletions changelog.d/10201-regex-perex-0.1.4.md
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@@ -0,0 +1,3 @@
### Performance

- **Required text after a character-class repeat no longer makes each RegExp search cost its start position** (#10201). A pattern such as `/([a-z]+)([0-9]+) /g` or `/[a-z]+[0-9]+ /y` made every `exec` or `test` call over an ASCII string pay work proportional to `lastIndex`, so a loop over one string was quadratic: 21 s for 40,000 matches over a 200,000-character string. The same loop now takes 85 ms. Requires `perex` 0.1.4.
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