Design Docs - ICU - International Components for Unicode

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Schedule

2020-10

CLDR 38

ICU 68(.1)

2020-12: ICU 68.2

2021-04

CLDR 39

ICU 69(.1)

2021-10

CLDR 40

ICU 70(.1)

Design Docs

Subpage Listing

Alphabetic Index
BreakIterator
- Character Iterators
- Dictionary with Word Frequencies
- RBBI Rule Enhancements
C++
- C++ string class
- Shared Objects
- Smart Pointers
- Stack Arrays
Calendar issues
- Backwards era-0 years and add,roll
Canonically Equivalent Shortest Form
Case Mappings
- Greek Uppercasing
CLDR Support
Cleanup
- MessageFormat Redesign
Collation
- Collation v2
- ICU 4.6 Changes
- Script Reordering
  - test
- Special Byte Values
- UCA 6.0 Tests
- UCA Weight Allocation
Compact Encodings
- Compact Encoding of Names
Data Formats
- Resource Bundle Format v2
Data Structures
- ICU Code Point Tries
- ICU String Tries
  - BytesTrie
  - UCharsTrie
Formatting
- MeasureFormat
  - Updating Measure Unit with new CLDR data
- MessageFormat
- Numbers
- SelectFormat
- TimeZone
ICU4J Development Environment Setup - *OBSOLETE*
Java 7 Support
Java Logger
Joint Tests with CLDR
Layout
- Java Layout Tools
Locale
- Canonicalization
- Root locale and fallback
Normalization
- Custom Normalization
Norwegian locales changes in v39
Number Parsing
- ICU4J Number Parsing Problems
Number Parsing in ICU4J 61
Properties
- Preparsed UCD
Regular Expressions
- Named Capture Groups
- Regular Expressions, UText based operation
Representation of alternate data values in ICU
Resource Bundles
- Clean-Sheet API
- Flat CLDR Locale Data
- RB design discussion - 2009-08-21
- Resource Bundle Issues
Size Reduction
- Caching
- CLDR Data
- Collation Resource Bundles
- Core Breakup
- General-Purpose Compression
- ICU4J Modularization
- Resource Bundle Keys
- Resource Bundle Strings
- Timezone debloating
- Transliteration Resource Bundles
Strings
- Splitter
Synchronization
- Build Time User Provided Synchronization
- Double-Checked Locking
- One Time Initialization
Territory Containment
- Territory & Region APIs
Transforms
UnicodeSet Redesign
Unified Cache

The older design docs are in svn: http://source.icu-project.org/repos/icu/icuhtml/trunk/design/.

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