Picocli 4.0.3

The picocli community is pleased to announce picocli 4.0.3.

This release contains a bugfixes and enhancements.

GraalVM native image-configuration generation for picocli commands with argument groups now work correctly.

This is the sixtieth public release.
Picocli follows semantic versioning.

Table of Contents

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

New and Noteworthy

Fixed issues

• [#794] (Bugfix) Perform topological sort on ArgGroups in annotation processor before wiring up the model to prevent FATAL ERROR in annotation processor: picocli.CommandLine$InitializationException: ArgGroup has no options or positional parameters, and no subgroups.
• [#793] (Bugfix) Argument groups disappear in GraalVM native-image (the generated reflect-config.json was missing the @ArgGroup-annotated fields). Thanks to Mike Hearn for the bug report.
• [#787] (Enhancement) Throw InitializationException instead of StackOverflowError when subcommand is subclass of itself. Thanks to Peter Murray-Rust for raising this.
• [#784] (DOC) Update documentation to show custom IFactory implementations should fall back to the default factory to enable the creation of collections for @Option-annotated methods and fields.
• [#788] (DOC) Add link to GitHub examples in user manual Mixins section. Thanks to Peter Murray-Rust for the suggestion.
• [#789] (DOC) Add example usage help to the user manual Negatable Options section.

Deprecations

No features were deprecated in this release.

Potential breaking changes

This release has no breaking changes.