gh-150889: Improve performance of unicodedata.normalize()#150890
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eendebakpt wants to merge 3 commits into
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gh-150889: Improve performance of unicodedata.normalize()#150890eendebakpt wants to merge 3 commits into
unicodedata.normalize()#150890eendebakpt wants to merge 3 commits into
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Scan the nfc_first/nfc_last reindex tables comparing only .start, range-check the candidate once, and terminate on a sentinel above every codepoint, so each entry costs a single comparison. ~2x faster on non-Latin and combining-heavy NFC/NFKC input; no new data tables. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
StanFromIreland
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unicodedata.normalize()
serhiy-storchaka
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Jun 4, 2026
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serhiy-storchaka
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LGTM. 👍
Please add a NEWS entry and a What's New entry (more than 2x speedup is significant).
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Added the NEWS entry. Unless the |
eendebakpt
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Jun 4, 2026
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