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GeezerVison is showing github.com — gh-157633: Update Unicode data to Unicode 18.0.0 by benjaminp · Pull Request #157634 · python/cpython

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@benjaminp

@benjaminp benjaminp commented Sep 16, 2026 •
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There is one code change for grapheme clustering. Rule GB9c was simplified in the latest version of the specification.

Fixes gh-157633.

  • Issue: Update unicodedata and others for Unicode 18.0.0 #157633

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@benjaminp
benjaminp requested review from AA-Turner and willingc as code owners September 16, 2026 16:30
@bedevere-app bedevere-app Bot mentioned this pull request Sep 16, 2026
Update unicodedata and others for Unicode 18.0.0 #157633
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@bedevere-app bedevere-app Bot added the awaiting core review label Sep 16, 2026
@StanFromIreland StanFromIreland changed the title gh-157633: update to Unicode 18 gh-157633: Update Unicode data to Unicode 18.0.0 Sep 16, 2026
@read-the-docs-community

read-the-docs-community Bot commented Sep 16, 2026 •
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Documentation build overview

📚 cpython-previews | 🛠️ Build #34596013 | 📁 Comparing 0e7b1f8 against main (699e802)

  🔍 Preview build  

3 files changed
± library/unicodedata.html
± whatsnew/3.16.html
± whatsnew/changelog.html
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@benjaminp
pythongh-157633: update to Unicode 18
0e7b1f8 
There is one code change for grapheme clustering. Rule GB9c was simplified in the latest version of the specification.
@benjaminp
benjaminp force-pushed the unicode-18 branch from f59cf2f to 0e7b1f8 Compare September 16, 2026 17:06
@benjaminp
benjaminp requested a review from serhiy-storchaka September 16, 2026 17:29
serhiy-storchaka
serhiy-storchaka approved these changes Sep 16, 2026
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@serhiy-storchaka serhiy-storchaka left a comment

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LGTM. 👍

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@bedevere-app bedevere-app Bot added awaiting merge and removed awaiting core review labels Sep 16, 2026
@benjaminp
benjaminp merged commit 993fd8e into python:main Sep 16, 2026
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@bedevere-app bedevere-app Bot removed the awaiting merge label Sep 16, 2026
@benjaminp
benjaminp deleted the unicode-18 branch September 16, 2026 18:35
@anthrotype anthrotype mentioned this pull request Sep 17, 2026
update to Unicode 18.0.0 fonttools/unicodedata2#75
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@chris-eibl chris-eibl mentioned this pull request Sep 18, 2026
Windows Arm64 release build fails #153668
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@serhiy-storchaka serhiy-storchaka serhiy-storchaka approved these changes
@AA-Turner AA-Turner Awaiting requested review from AA-Turner AA-Turner is a code owner
@willingc willingc Awaiting requested review from willingc willingc is a code owner

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Update unicodedata and others for Unicode 18.0.0

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@benjaminp @serhiy-storchaka
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