Epic: Compatibility Validation & v1.0

[unclesp1d3r]

Summary

Validate that libmagic-rs achieves 95%+ compatibility with GNU file using the third_party/tests corpus, and ship v1.0.0.

Current State

• 0/81 tests passing (0%) with built-in rules
• 76 tests return "data" (no matching rule)
• 5 tests detect container but miss subtype (ZIP -> DOCX)

Tracking

Prerequisites (must be complete first)

• Epic: Operator Completeness #53 Epic: Operator Completeness (v0.2.0)
• Epic: Type System Expansion #54 Epic: Type System Expansion (v0.2.0 + v0.3.0)
• Epic: Offset Resolution #55 Epic: Offset Resolution (v0.3.0)
• Epic: Core Flow Spec Compliance #56 Epic: Core Flow Spec Compliance (v0.4.0)
• Evaluator: ZIP content inspection for compound document detection #51 ZIP content inspection (v0.3.0)

Validation

• Compatibility: establish baseline and track third_party/tests pass rate #48 Establish compatibility baseline and CI tracking
• Achieve 77/81 (95%) pass rate against test corpus
• All Core Flows implemented per spec
• >85% test coverage maintained

Release

• Changelog for v1.0.0
• Final documentation review
• Tag and publish v1.0.0

Target Compatibility by Format Category

Category	Tests	Target
Binary formats (RPM, zstd, PGP, etc.)	~45	43+ pass
Text formats (JSON, scripts, PNM)	~15	14+ pass
Audio formats (MP3, DSD)	~5	5 pass
ZIP subtypes (DOCX, XLSX, HWP)	~5	4+ pass
Custom magic tests	~4	4 pass
Filesystem images	~3	3 pass

References

• Epic Epic: libmagic-rs Phase 1 MVP #24 (overarching Phase 1 MVP epic)
• third_party/tests/README

[traycerai]

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