v2.0.0 - Full gitignore Specification Support

v2.0.0 - Full gitignore Specification Support

🎉 Major Update

This release fixes three critical bugs and adds full support for root-relative patterns, achieving complete gitignore specification compliance!

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🐛 Critical Bug Fixes

1. Root-Relative Patterns Now Work! (Issue #5) ⭐

Finally! Patterns starting with / now correctly match only at the repository root.

// Pattern: /build/
matcher.Matches("build/")          // ✅ true (root level)
matcher.Matches("src/build/")      // ✅ false (not at root)

// Pattern: logs/ (no slash - matches anywhere)
matcher.Matches("logs/")           // ✅ true
matcher.Matches("src/logs/")       // ✅ true

Before: /build/ didn't match anything ❌
After: /build/ matches only root-level build/ ✅

2. Fixed Substring Matching Bug

Pattern src/test no longer incorrectly matches mysrc/test or src/test2.

3. Added Escaped Negation Support

Pattern \!important.txt now matches files literally named !important.txt.

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✨ What's New

• Root-relative patterns: /pattern matches only at root
• Full gitignore spec compliance: All standard gitignore features now work
• 14 new tests: Unicode, deep paths, wildcards, and edge cases
• 61 total tests (was 47) - all passing ✅

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📊 Testing Improvements

• ✅ Unicode support: Japanese, Russian, Emoji filenames
• ✅ Deep paths: 100+ directory levels tested
• ✅ Long patterns: 1000+ characters tested
• ✅ No race conditions detected
• ✅ No performance regressions (~34µs per match)

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🔄 Migration

Most users: No changes needed! The bugs are fixed and features now work correctly.

If you worked around Issue #5:

// BEFORE (workaround):
patterns := []string{
    "mydir/",
    "!example/mydir/",  // Had to manually exclude
}

// AFTER (proper solution):
patterns := []string{
    "/mydir/",  // Automatically matches only at root
}

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📦 Installation

go get github.com/codeglyph/go-dotignore@v2.0.0

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🎯 Why v2.0.0?

• Major new feature: root-relative pattern support
• Three critical bug fixes that change behavior
• Full gitignore specification compliance
• Users with workarounds may need minor updates

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⚡ Performance

No regressions:

• ~34µs per match operation
• Thread-safe, production-ready
• Same memory footprint

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📋 Full Details

See RELEASE_NOTES_v2.0.0.md for complete changelog, migration guide, and test script.

Closes: #5