[dependabot]

Bumps com.ibm.icu:icu4j from 78.3 to 79.1.

Release notes

Sourced from com.ibm.icu:icu4j's releases.

ICU 79.1

We are pleased to announce the release of Unicode® ICU 79. It updates to Unicode 18 (blog), including new characters and scripts, emoji, collation & IDNA changes, and corresponding APIs and implementations.

It also updates to CLDR 49 (beta blog) locale data with many additions and corrections.

Line break backwards-iteration performance has been significantly improved, fixing a long-standing regression.

C++ and Java implementations of the CLDR MessageFormat 2.0 specification have been updated to CLDR 49. Some of the API remains in technology preview.

ICU 79 and CLDR 49 are major releases, including a new version of Unicode and major locale data improvements.

• Details: ICU 79
• Download: releases/tag/release-79.1
• API docs: follow the “Released” links on unicode-org.github.io/icu-docs/
• Maven: com.ibm.icu / icu4j / version 79.1

Attention: Future Changes

• We will phase out cross-version Java serialization compatibility guarantees for ICU4J starting with the ICU 80 release.
• Follow the link for details and other planned changes.

ICU 79 RC

We are pleased to announce the release candidate for Unicode® ICU 79. It updates to Unicode 18 (blog), including new characters and scripts, emoji, collation & IDNA changes, and corresponding APIs and implementations.

It also updates to CLDR 49 (beta blog) locale data with many additions and corrections.

Line break backwards-iteration performance has been significantly improved, fixing a long-standing regression.

C++ and Java implementations of the CLDR MessageFormat 2.0 specification have been updated to CLDR 49. Some of the API remains in technology preview.

ICU 79 and CLDR 49 are major releases, including a new version of Unicode and major locale data improvements.

• Details: ICU 79
• Download: releases/tag/release-79.1rc
• API docs (preliminary): follow the “Dev” links on unicode-org.github.io/icu-docs/

Please test this release candidate on your platforms and report bugs and regressions by Monday, 2026-oct-19, via the icu-support mailing list, and/or please find/submit error reports.

Please do not use this release candidate in production.

Attention: Future Changes

• We will phase out cross-version Java serialization compatibility guarantees for ICU4J starting with the ICU 80 release.
• Follow the link for details and other planned changes.

Commits

• ddc6b66 ICU-23250 GitHub updated the images to maven 3.10, and the Sonatype publishin...
• 3fa6213 ICU-23569 Fix infinite loop in FCDUIterCollationIterator::previousCodePoint
• 340d9e8 ICU-23250 BRS_79_GA Update version number to 79.1 (no SNAPSHOT / rc)
• 38a43ed ICU-23575 Guard currency name cache key against overlong locale IDs
• eb798c6 ICU-23568 Use 64-bit CE indexes in usearch CEIBuffer
• 1729c5b ICU-23490 Prevent int32_t overflow in ReorderingBuffer::resize()
• 735f4b1 ICU-23558 Revert: Round the lowest unit of mixed units from usage() to an int...
• 970072a ICU-23558 Round the lowest unit of mixed units from usage() to an integer
• 0f2393d ICU-23565 fix ICU4J PersonNameFormatter throws NullPointerException
• e2a4ff7 ICU-23560 Added tests for French ordinals and fixed bugs in ICU4C that were p...
• Additional commits viewable in compare view

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[github-actions]

Gradle Test Results

    70 files  ±0      70 suites  ±0   30s ⏱️ +5s
 1 542 tests ±0   1 542 ✅ ±0  0 💤 ±0  0 ❌ ±0 
34 932 runs  ±0  34 932 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit fd3b056. ± Comparison against base commit 53e3609.

♻️ This comment has been updated with latest results.