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1.55.0

BoundaryML/baml1.55.0Jun 29, 2026by github-actions[bot]

AI Summary

A feature-rich release introducing argument parsing enhancements, improvements to the `style()` function, and new utility commands like `just_version()`.

Key Highlights

  • Adds `just_version()` function to retrieve the current version.
  • Adds support for RGB and fixed colors to the `style()` function.
  • Allows combining short command-line options.
  • Adds `[arg(multiple)]` syntax support.
  • Adds `set minimum-version` command.

New Features

  • Add stream gates to `style()`
  • Accept `-F` for `--dotenv-filename`
  • Add `just_version()` function
  • Add `[arg(multiple)]`
  • Allow combining short options
  • Allow variadic parameters to be options
  • Add support for RGB and fixed colors to `style()`
  • Add `set minimum-version`
  • Add module aliases

Full Release Notes

### Fixed
- Fix forwarded dependency flag value ([#3489](https://github.com/casey/just/pull/3489) by [casey](https://github.com/casey))

### Changed
- Allow `[arg(pattern)]` to be a list ([#3484](https://github.com/casey/just/pull/3484) by [casey](https://github.com/casey))
- Allow `[arg(help)]` to be expression ([#3483](https://github.com/casey/just/pull/3483) by [casey](https://github.com/casey))
- Allow `[arg(pattern)]` to be expression ([#3482](https://github.com/casey/just/pull/3482) by [casey](https://github.com/casey))

### Added
- Add stream gates to `style()` ([#3503](https://github.com/casey/just/pull/3503) by [casey](https://github.com/casey))
- Accept `-F` for `--dotenv-filename` ([#3498](https://github.com/casey/just/pull/3498) by [casey](https://github.com/casey))
- Add `just_version()` function ([#3497](https://github.com/casey/just/pull/3497) by [casey](https://github.com/casey))
- Add `[arg(multiple)]` ([#3493](https://github.com/casey/just/pull/3493) by [casey](https://github.com/casey))
- Allow combining short options ([#3490](https://github.com/casey/just/pull/3490) by [casey](https://github.com/casey))
- Allow variadic parameters to be options ([#3488](https://github.com/casey/just/pull/3488) by [casey](https://github.com/casey))
- Default `[arg(short)]` to first character of parameter name ([#3486](https://github.com/casey/just/pull/3486) by [casey](https://github.com/casey))
- Add support for RGB and fixed colors to `style()` ([#3479](https://github.com/casey/just/pull/3479) by [casey](https://github.com/casey))
- Improve `style()` function ([#3478](https://github.com/casey/just/pull/3478) by [casey](https://github.com/casey))
- Add `set minimum-version` ([#3477](https://github.com/casey/just/pull/3477) by [casey](https://github.com/casey))
- Add module aliases ([#3472](https://github.com/casey/just/pull/3472) by [casey](https://github.com/casey))

### Misc
- Add example to cached recipes readme ([#3506](https://github.com/casey/just/pull/3506) by [casey](https://github.com/casey))
- Fix readme heading levels ([#3505](https://github.com/casey/just/pull/3505) by [casey](https://github.com/casey))
- Move Friendly Admonitions higher in Cached Recipes section ([#3504](https://github.com/casey/just/pull/3504) by [casey](https://github.com/casey))
- Rename test helper functions ([#3502](https://github.com/casey/just/pull/3502) by [casey](https://github.com/casey))
- Simplify tests ([#3501](https://github.com/casey/just/pull/3501) by [casey](https://github.com/casey))
- Use `assert_eval_eq` in tests ([#3499](https://github.com/casey/just/pull/3499) by [casey](https://github.com/casey))
- Expand readme intro list ([#3496](https://github.com/casey/just/pull/3496) by [casey](https://github.com/casey))
- Organize readme into sections ([#3495](https://github.com/casey/just/pull/3495) by [casey](https://github.com/casey))
- Rename option tests ([#3494](https://github.com/casey/just/pull/3494) by [casey](https://github.com/casey))
- Move option application to `switch.apply()` ([#3491](https://github.com/casey/just/pull/3491) by [casey](https://github.com/casey))
- Document that `[arg(help)]` may be a list ([#3485](https://github.com/casey/just/pull/3485) by [casey](https://github.com/casey))
- Move override processing out of `Analyzer` ([#3481](https://github.com/casey/just/pull/3481) by [casey](https://github.com/casey))
- Add `ConstEvalError` ([#3480](https://github.com/casey/just/pull/3480) by [casey](https://github.com/casey))
- Remove `ModuleAlias` ([#3475](https://github.com/casey/just/pull/3475) by [casey](https://github.com/casey))
- Chain tests ([#3476](https://github.com/casey/just/pull/3476) by [casey](https://github.com/casey))
- Remove temptree dependency ([#3473](https://github.com/casey/just/pull/3473) by [casey](https://github.com/casey))
- Simplify show tests ([#3471](https://github.com/casey/just/pull/3471) by [casey](https://github.com/casey))
- Remove unnecessary tab escapes ([#3470](https://github.com/casey/just/pull/3470) by [casey](https://github.com/casey))
- Indent `Test::write()` strings ([#3469](https://github.com/casey/just/pull/3469) by [casey](https://github.com/casey))
- Document cache key printing ([#3468](https://github.com/casey/just/pull/3468) by [casey](https://github.com/casey))
- Remove generic argument from `Count` ([#3467](https://github.com/casey/just/pull/3467) by [casey](https://github.com/casey))