Diff Diff

A local macOS SwiftUI app for comparing two Git branches with a calmer review UI.

Author: ryanwang. See AUTHORS.md.

Run

cd /Users/ryanwang/personal-workspace/DiffDiff
swift run DiffDiff

For the Mac app target, open DiffDiff.xcodeproj with Xcode and run the DiffDiff scheme.

Verify

swift build
swift run DiffDiff --smoke-test

swift test is not wired yet because this Command Line Tools installation does not provide XCTest or Testing. The app includes a hidden smoke-test entrypoint for core parser verification.

Current Features

• Open a local Git repository.
• Read local and remote branches.
• Compare with review mode (base...compare) or direct mode (base..compare).
• Toggle whitespace ignoring.
• Search and path-filter changed files.
• Show changed-file counts, additions, and deletions.
• Render unified or split diff views.
• Skip binary files and protect the UI from very large patches.

Mac App Store

The repository includes a macOS app target, sandbox entitlements, app metadata, privacy manifest, and icon assets for App Store preparation. See docs/AppStore.md.