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icu-design

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Robin Leroy, … Mark Davis Ⓤ3

12/30/25

ICU API proposal: more UnicodeSet parsing changes

Those all look great. Somewhat tangential to the goal for UTS #61 compatibility: As well as

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ICU API proposal: more UnicodeSet parsing changes

Those all look great. Somewhat tangential to the goal for UTS #61 compatibility: As well as

12/30/25

Robin Leroy, Markus Scherer2

12/19/25

ICU API proposal: upcoming changes to corner cases of UnicodeSet behaviour

lgtm tnx! markus

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ICU API proposal: upcoming changes to corner cases of UnicodeSet behaviour

lgtm tnx! markus

12/19/25

Eran Leshem, … Eran Leshem4

11/14/25

I'm not able to comment (or even vote) on the Jira issue. I keep getting error messages (in both

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I'm not able to comment (or even vote) on the Jira issue. I keep getting error messages (in both

11/14/25

Mihai Niță Ⓤ, Markus Scherer2

9/15/25

ICU4J: MF2: Change Directionality.of(ULocale ulocale) to use Locale

sgtm tnx markus

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ICU4J: MF2: Change Directionality.of(ULocale ulocale) to use Locale

sgtm tnx markus

9/15/25

Shane Carr, … Mark Davis Ⓤ14

9/11/25

Would like to accept ticket to remove standard patterns from DTPG

We've started down that path, by having skeletons for the lengths. A further step is to have the

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Would like to accept ticket to remove standard patterns from DTPG

We've started down that path, by having skeletons for the lengths. A further step is to have the

9/11/25

Rich Gillam, … Shane Carr7

9/9/25

Overriding number formatters in SimpleDateFormat

> I believe no one currently uses an algorithmic numbering system for years I should have said

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Overriding number formatters in SimpleDateFormat

> I believe no one currently uses an algorithmic numbering system for years I should have said

9/9/25

Mihai Niță Ⓤ, Markus Scherer2

9/9/25

ICU4J: MessageFormatter APIs proposed for DRAFT

lgtm tnx -- we will discuss the yellow highlights

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ICU4J: MessageFormatter APIs proposed for DRAFT

lgtm tnx -- we will discuss the yellow highlights

9/9/25

Shane Carr, … Peter Edberg7

9/8/25

ICU API Proposal: Add length-aware AM/PM getter and setter in DateFormatSymbols

This was approved by ICU TC with the following changes Add the “DtContextType unusedContext”

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ICU API Proposal: Add length-aware AM/PM getter and setter in DateFormatSymbols

This was approved by ICU TC with the following changes Add the “DtContextType unusedContext”

9/8/25

Rich Gillam, … Mark Davis Ⓤ6

9/7/25

Bidi behavior in number and date formatting

You should add it to the agenda... BTW, we should have a ticket for the design issue of whether or

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Bidi behavior in number and date formatting

You should add it to the agenda... BTW, we should have a ticket for the design issue of whether or

9/7/25

8/19/25

ICU API notice: new script code "Hntl" – Han (Traditional variant) with Latin

Dear ICU team & users, This is new API for: ICU 78 Ticket: ICU-23181 We are going to add API

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ICU API notice: new script code "Hntl" – Han (Traditional variant) with Latin

Dear ICU team & users, This is new API for: ICU 78 Ticket: ICU-23181 We are going to add API

8/19/25

Markus Scherer2

7/28/25

ICU API notice: new property values for Unicode 17

On Fri, May 30, 2025 at 12:18 PM Markus Scherer <marku...@gmail.com> wrote: Dear ICU team

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ICU API notice: new property values for Unicode 17

On Fri, May 30, 2025 at 12:18 PM Markus Scherer <marku...@gmail.com> wrote: Dear ICU team

7/28/25

Younies Mahmoud, … Younies Mahmoud8

7/24/25

Introduction of ICU 78 Units Converter API

Hi Markus, Thanks for the notes. I have added the package and also the two methods for a Throwable

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Introduction of ICU 78 Units Converter API

Hi Markus, Thanks for the notes. I have added the package and also the two methods for a Throwable

7/24/25

Markus Scherer2

7/17/25

ICU API proposal: Unicode helper APIs

The TC approved these APIs today with the following changes: Change the code-point-to-string

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ICU API proposal: Unicode helper APIs

The TC approved these APIs today with the following changes: Change the code-point-to-string

7/17/25

Markus Scherer, Robin Leroy7

7/16/25

ICU4C API proposal: C++ Unicode string code point iterators

Dear ICU team & users, Yet another addendum, this one minor, and based on feedback from using an

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ICU4C API proposal: C++ Unicode string code point iterators

Dear ICU team & users, Yet another addendum, this one minor, and based on feedback from using an

7/16/25

Mihai Niță Ⓤ, … Mark Davis Ⓤ3

7/16/25

Proposal: Consistent names for the release artifacts

👍 On Wed, Jul 16, 2025, 12:14 'Rich Gillam' via icu-design <icu-d...@unicode.org>

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Proposal: Consistent names for the release artifacts

👍 On Wed, Jul 16, 2025, 12:14 'Rich Gillam' via icu-design <icu-d...@unicode.org>

7/16/25

Peter Edberg, … Markus Scherer4

7/9/25

ICU API proposal: Deprecate C create/getMilligramPerDeciliter, J MILLIGRAM_PER_DECILITER

On Thu, Jun 26, 2025 at 10:10 AM Peter Edberg <ped...@unicode.org> wrote: J API change,

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ICU API proposal: Deprecate C create/getMilligramPerDeciliter, J MILLIGRAM_PER_DECILITER

On Thu, Jun 26, 2025 at 10:10 AM Peter Edberg <ped...@unicode.org> wrote: J API change,

7/9/25

Mihai Niță Ⓤ, … Mark Davis Ⓤ4

7/2/25

ICU API proposal: use covariant return in clone() to avoid casts (ICU4J)

++1! On Wed, Jul 2, 2025 at 2:19 PM 'Rich Gillam' via icu-design <icu-d...@unicode.org

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ICU API proposal: use covariant return in clone() to avoid casts (ICU4J)

++1! On Wed, Jul 2, 2025 at 2:19 PM 'Rich Gillam' via icu-design <icu-d...@unicode.org

7/2/25

7/1/25

Followup regarding ICU4C MessageFormat 2.0: Function Composition

Hello, The design doc for MF2 function composition was approved in the 2025-06-26 TC meeting: https:/

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Followup regarding ICU4C MessageFormat 2.0: Function Composition

Hello, The design doc for MF2 function composition was approved in the 2025-06-26 TC meeting: https:/

7/1/25

6/16/25

Fwd: [icu-design] ICU4C MessageFormat 2.0: Function composition

-------- Forwarded Message -------- Subject: Re: [icu-design] ICU4C MessageFormat 2.0: Function

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Fwd: [icu-design] ICU4C MessageFormat 2.0: Function composition

-------- Forwarded Message -------- Subject: Re: [icu-design] ICU4C MessageFormat 2.0: Function

6/16/25

Fredrik Roubert, Markus Scherer2

6/16/25

ICU API proposal: U_..._API_CLASS macros

Thanks, lgtm. By way of explanation, Fredrik is working on more fine-grained DLL export, so that

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ICU API proposal: U_..._API_CLASS macros

Thanks, lgtm. By way of explanation, Fredrik is working on more fine-grained DLL export, so that

6/16/25

Elango Cheran, … Steven R. Loomis12

6/12/25

ICU site redesign

I'm glad to hear it for my part I'd be glad to explain anything from how CLDR”s setup works.

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ICU site redesign

I'm glad to hear it for my part I'd be glad to explain anything from how CLDR”s setup works.

6/12/25

Elango Cheran, Markus Scherer3

5/22/25

BreakIterator out of bounds exception type fix

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BreakIterator out of bounds exception type fix

5/22/25

Elango Cheran, Markus Scherer2

4/16/25

approved API proposal for Segmenter API

On Fri, Apr 11, 2025 at 4:39 PM Elango Cheran <ela...@unicode.org> wrote: This is a little

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approved API proposal for Segmenter API

On Fri, Apr 11, 2025 at 4:39 PM Elango Cheran <ela...@unicode.org> wrote: This is a little

4/16/25

Frank Tang (譚永鋒), … Shane Carr4

3/27/25

ICU4C proposal- Immutable interfaces & Builder class for Calendar

After the discussion about avoiding multiple inheritance constraints in the API in another discussion

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ICU4C proposal- Immutable interfaces & Builder class for Calendar

After the discussion about avoiding multiple inheritance constraints in the API in another discussion

3/27/25

Peter Edberg, Rich Gillam2

3/21/25

ICU API proposal: Deprecate C createMetricTon/getMetricTon, J METRIC_TON

Definitely no objections from me… —Rich On Mar 21, 2025, at 4:07 PM, Peter Edberg <pedberg@unicode

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ICU API proposal: Deprecate C createMetricTon/getMetricTon, J METRIC_TON

Definitely no objections from me… —Rich On Mar 21, 2025, at 4:07 PM, Peter Edberg <pedberg@unicode

3/21/25

Younies Mahmoud, Markus Scherer2

1/31/25

Accepting Ticket (ICU-23032) - Fix and Improve Units Documentation

On Fri, Jan 31, 2025 at 1:28 AM Younies Mahmoud <you...@unicode.org> wrote: I'm writing to

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Accepting Ticket (ICU-23032) - Fix and Improve Units Documentation

On Fri, Jan 31, 2025 at 1:28 AM Younies Mahmoud <you...@unicode.org> wrote: I'm writing to

1/31/25

Younies Mahmoud2

1/29/25

Proposing Units Converter API Design in ICU

Dear ICU Committee, I have edited the design document and added two more options. However, given the

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Proposing Units Converter API Design in ICU

Dear ICU Committee, I have edited the design document and added two more options. However, given the

1/29/25

Younies Mahmoud

1/15/25

Proposal Discussion on Unit Constants in ICU

Hi Everyone, Following up on our discussion last week regarding Unit Constants, I wanted to share

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Proposal Discussion on Unit Constants in ICU

Hi Everyone, Following up on our discussion last week regarding Unit Constants, I wanted to share

1/15/25

Younies Mahmoud

1/8/25

Discussion: Implementing UnitConstant in MeasureUnit

Hi everyone, This email aims to initiate a discussion on choosing an option for implementing

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Discussion: Implementing UnitConstant in MeasureUnit

Hi everyone, This email aims to initiate a discussion on choosing an option for implementing

1/8/25

George Rhoten, … Rich Gillam5

1/7/25

ICU Design Proposal: Support inverse rule for [] span in RBNF

Thanks! Rich approved the pull request at https://github.com/unicode-org/icu/pull/3326 Unless I hear

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ICU Design Proposal: Support inverse rule for [] span in RBNF

Thanks! Rich approved the pull request at https://github.com/unicode-org/icu/pull/3326 Unless I hear

1/7/25

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