Project status

Ibex is pre-1.0. The default compatible mode is the conservative adoption baseline, while Preview and Experimental features require explicit activation and have feature-specific boundaries.

Release decision

The v1.0 publication decision is currently on hold because the published error experience evidence still needs an independent review. This blocks publication of that release candidate; it does not freeze feature development. The current Grammar IR, Automaton IR, table, report, and runtime contracts remain closed and validated while Preview work continues under the stability policy.

The complete rationale and evidence limitations are in the release readiness report. The error UX review status is the machine-readable record; this page is the human entry point.

Maturity at a glance

• Stable baseline: racc-compatible grammar input, default LALR construction,

current parser/runtime contracts, and format-v6 batch CST.

• Preview: extended grammar syntax, generated lexers, IELR, LSP, watch,

diagnostics, and the browser playground. These require explicit activation or are bounded tools.

• Experimental: syntax-only incremental CST sessions and selected research

surfaces. They may change without the Stable compatibility promise.

Consult maturity.md and stability.md for the canonical feature registry, activation mechanism, and promotion requirements.

Evidence boundaries

Repository tests and bounded benchmarks are evidence for the recorded revision, not universal performance claims. Comparative statements link to the relevant comparison policy, workload registry, and release artifact. Ibex does not claim to be a sandbox: generated semantic parsers execute application Ruby.