Tim Chevalier

ICU-22747 MF2: Validate digit size for :number and :integer; validate options for :datetime

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In MF2, functions can be passed named option values. The spec defines two cases where built-in functions should error out when provided an unexpected value for one of its options:...

ICU-22746 Import tests from ICU4J and make more tests data-driven

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This change brings in all the tests from ICU4J (some are marked as "ignored" with a JIRA ticket number, which is a capability I added to the JSON test harness...

Spec language on eager vs. lazy evaluation should be clarified

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In #753 , @echeran brought up the example of a custom function `getSystemTimeInMillisNow()` that would return the current time. In the [spec intro](https://github.com/unicode-org/message-format-wg/blob/main/spec/formatting.md#introduction) we currently have the language: "This specification...

ICU-22763 MF2: Handle time zones correctly in :datetime

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Previously, the time zone components of date/time literals were ignored. In order to store the time zone properly for re-formatting, this change also changes the representation of `Formattable` date values...

ICU-22794 MF2: De-duplicate C++ and Java test data

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This PR moves all the .json files for data-driven ICU4C and ICU4J tests into a single top-level directory, `icu/testdata/`. I did my best to remove duplicate tests. This involved fixing...

Just running CI, do not review ##### Checklist - [ ] Required: Issue filed: https://unicode-org.atlassian.net/browse/ICU-_____ - [ ] Required: The PR title must be prefixed with a JIRA Issue number....

DESIGN: Add alternative designs to the design doc on function composition

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This document sketches out some alternatives for the machinery provided to enable function composition. The goal is to provide an exhaustive list of alternatives.

ICU-22834 MF2: make tests compliant with schema and update spec tests

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This PR changes the code in the ICU4C and ICU4J tests that reads data-driven tests in JSON format to follow [the test schema in the conformance repo](https://github.com/unicode-org/conformance/blob/main/schema/message_fmt2/testgen_schema.json), as well as...

ICU-22855: Create combined source distribution when running `make dist` on C++ side

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This PR changes `make dist` on the C++ side to create a single combined sources distribution, including icu4c/, icu4j/, and testdata/. It also undoes the change in `intltest.cpp` that looks...

ICU-22762 MF2: Add methods to control error handling behavior

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##### Checklist - [x] Required: Issue filed: https://unicode-org.atlassian.net/browse/ICU-22762 - [x] Required: The PR title must be prefixed with a JIRA Issue number. - [x] Required: The PR description must include...