Picocli 3.0.0-alpha-4

The picocli community is pleased to announce picocli 3.0.0-alpha-4.

This release contains bug fixes and enhancements.

This is the twenty-fourth public release.
Picocli follows semantic versioning.

Table of Contents

• New and noteworthy
• Promoted features
• Fixed issues
• Deprecations
• Potential breaking changes

New and Noteworthy

Promoted Features

Promoted features are features that were incubating in previous versions of picocli but are now supported and subject to backwards compatibility.

No features have been promoted in this picocli release.

Fixed issues

[#318] API Change: Split model IBinding into IGetter and ISetter.
[#320] API Change: Rename parser config maxArityIsMaxTotalParams to arityRestrictsCumulativeSize.
[#216] Enhancement: Parsed values now replace the default value of multi-value (array, Collection or Map) options and positional parameters instead of being appended to them. Thanks to wiwie for the request.
[#261] Enhancement: Options and positional parameters with a defaultValue are never required. Thanks to ymenager for the request.
[#315] Enhancement: Initialize ArgSpec value with defaultValue before parsing command line.
[#263] Bugfix: positional parameter defaults were not shown in usage help message. Thanks to ymenager for the bug report.

Deprecations

See 3.0.0-alpha-1

Potential breaking changes

• Parsed values now replace the default value of multi-value (array, Collection or Map) options and positional parameters instead of being appended to them.
• The IBinding interface introduced in v3.0.0-alpha-1 has been replaced with two functional interfaces IGetter and ISetter.
• The UnmatchedArgsBinding factory methods introduced in v3.0.0-alpha-1 have been replaced with forStringArrayConsumer and forStringCollectionSupplier.

See also breaking changes for 3.0.0-alpha-3, 3.0.0-alpha-2, and 3.0.0-alpha-1.