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Contributing to CLDR

Overview

The CLDR project consists of 3 aspects:

Data: We rely on contributions by native language speakers that are most commonly used currently in the given country/region. Most data is collected through the Survey Tool. See How to contribute.
- If you are not a native language speaker, but have evidence of CLDR data being incorrect, file a Jira ticket to report the issue.
- For data that is not collected in the Survey Tool, such as supplemental data, file a Jira ticket and provide evidence for changing the data.
Internationalization structure: Requires a ticket to be changed.
- For structural issues, note that many issues may be due to misunderstandings of the LDML spec. For example, <pattern>¤#,##0.00</pattern> has a specialized format where each character represents a special function.
- File a Jira ticket and provide evidence for the spec issues or to establish a new structure.
- If your organization is not a Unicode member, consider becoming a member and work as a CLDR technical committee member.
CLDR internal tooling such as adding new tests or fixing tooling that enable CLDR builds and releases. See [CLDR Developer][] introduction.
- To contribute in internal tooling, [Contact][] us.
- See Tools source and Repository Organization

Areas where contributions are welcome

cldr-apps/: (Survey Tool). Improvements here include:
- UI: performance improvements, visual and functional refinements
- Additional checks (CheckCLDR) to validate CLDR data.
java/: The core CLDR tooling. Improvements could include:
- better documentation around code components
- updates to use newer/different library dependencies
- writing unit tests to improve code coverage
- better documentation around command line tools

Requirements for merged PRs

For all PRs these steps are required before the PR is merged:

The PR and commits must reference a Jira ticket which has been accepted by the CLDR-TC. Open a ticket if there is not already a relevant one open.
The CLA must be signed, agreeing to the Terms of use. You will be prompted on the PR to sign this if you have not already done so.
All tests must pass (See below)
The PR must be reviewed by a TC member.
The PR should have a single commit, and the first line of the commit must begin with the accepted Jira ticket number.

Sample commit message

CLDR-0000 Brief Description of Change

Optionally, this is the first line of an extended description,
after the blank line.
- Here is an item
- Here is another item

Licenses

Usage of CLDR data and software is governed by the Unicode Terms of use a copy of which is included as [unicode-license.txt][]
Some CLDR tools depend on libraries in tools/java/libs/; use of these libraries is governed by separate license agreements.
- For example, use of the Guava, Xerces, and Myanmar Tools libraries is subject to the Apache License included as apache-license.txt
Use of the ICU libraries is subject to the ICU License, included as ICU-LICENSE.
There must be a signed CLA before code is contributed, the PR will not be merged until the CLA is signed.

Tests

For more detail, and how to run the tests locally, see Running Tests on the CLDR development site.

Automatic Test Runs

Tests are automatically run once a commit is pushed to GitHub and when a PR is opened requesting changes to CLDR. You will see the status check next to each commit's hash, it will show as a circle, x, or checkmark. (●✖✔). For GitHub documentation, see About Status Checks. You can click on these indicators anywhere they appear for more details.

Briefly:

● An orange circle indicates that information is not available yet, such as a test that is still running or has not started yet.
✖ A red X indicates a failure or a warning. Depending on the type of issue, merging might be blocked.
✔ A green checkmark indicates success.

Similarly, in a PR, certain checks are marked as “Required.” All required checks must succeed before merging is allowed.

If a test or status check does not pass, see Running Tests on the CLDR development site.

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