[ruff] Recognize re.prefixmatch (RUF039, RUF055) - #28311
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Could you please split off the changes around re.Pattern? That's a much larger change than the 3.15-related changes I had planned, and I also don't think this has been requested previously. Such a large expansion of a rule should go through an issue first.
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ruff] Recognize re.prefixmatch (RUF039, RUF055)
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Summary
Adds support for Python 3.15’s
re.prefixmatchto:unraw-re-pattern(RUF039)unnecessary-regular-expression(RUF055)RUF055treatsre.prefixmatchlikere.match, replacing plain string patterns withstr.startswithwhen the result is used in a truth-value context.Recognition is independent of the configured target version, while the mdtests use Python 3.15 where the API is available.
Closes part of #28206.
Test Plan
cargo nextest run -p ruff_mdtest --test mdtestcargo nextest run -p ruff_linter rules::ruff::testscargo dev generate-allprekon all changed files