# Self-review your working diff before committing in Objective-C with Atlas in 2026 > Atlas helps Objective-C developers in 2026 self-review uncommitted diffs by integrating with `XCTest`, `CocoaPods`, and `clang-format`. Atlas empowers Objective-C developers in 2026 to meticulously self-review uncommitted changes, catching mistakes before they impact code reviews or continuous integration. It integrates directly with your Objective-C toolchain, including `XCTest (xcodebuild test)`, `CocoaPods`, and `clang-format`, to provide a comprehensive pre-commit validation experience right in your terminal. ## Key takeaways - Atlas provides a unified diff for Objective-C changes, making self-review efficient. - Read full Objective-C `.h` and `.m` files with Atlas to understand context beyond the diff. - Use `atlas grep` to find and remove `NSLog` or `XCTSkip` debugging leftovers in Objective-C. - Run `xcodebuild test` and `clang-format` via Atlas to validate Objective-C code before committing. - Atlas's session revert safely undoes unwanted Objective-C changes from snapshots. ## How Atlas helps Objective-C developers review uncommitted diffs Atlas streamlines the self-review process for Objective-C developers in 2026 by providing a terminal-native interface to inspect your working diffs. It surfaces a unified diff for every file edit, allowing you to review changes across your `.h` and `.m` pairs with precision, ensuring no unintended modifications slip through. Atlas is designed to help Objective-C developers catch their own mistakes in the uncommitted diff before they reach a reviewer or CI. It achieves this by reading your current git working tree, surfacing the status and the raw diff directly within its terminal user interface. This allows you to see exactly what changes have been made across your Objective-C project, from new `.h` and `.m` files to modifications within existing categories or `Podfile` entries. Every edit Atlas makes is also recoverable, backed by session snapshots, providing a robust safety net. This means you can confidently make changes, knowing that an unwanted modification can be undone rather than requiring a manual revert, preventing half-written turns from being rolled back mid-flight. ## Inspecting Objective-C code changes and context with Atlas To effectively self-review Objective-C code, Atlas allows you to read each changed `.h` and `.m` file in full, not just the lines highlighted in the diff. This ensures you check the change against its surroundings, which is crucial for understanding the impact of modifications, especially when dealing with ARC or bridging headers in 2026. A raw diff can sometimes hide the full context of a change, making it difficult to assess its impact on surrounding Objective-C code. Atlas addresses this by enabling you to read each changed file in its entirety. Using the `atlas read` command, you can view the full content of a modified `.m` implementation file or a `.h` header, allowing you to verify that your changes align with the existing logic, nullability annotations, and ARC memory management patterns. This is particularly important in Objective-C projects where changes in one file, such as a header, can have significant implications for its corresponding implementation file or even Swift code consuming it via a bridging header. Atlas's ability to index code by AST declarations using tree-sitter, rather than blind line windows, further enhances its understanding of your Objective-C codebase. ## Catching debugging leftovers in Objective-C before committing Before committing your Objective-C changes, it's vital to remove any temporary debugging code, such as `NSLog` statements or skipped `XCTest` cases. Atlas helps you grep for these leftovers across your uncommitted diff, ensuring your code is clean and production-ready in 2026, preventing accidental commits of development artifacts. Debugging often involves introducing temporary `NSLog` statements, commented-out blocks of code, or even temporarily skipping `XCTest` cases using `XCTSkip`. Forgetting to remove these before committing can lead to noisy logs, dead code, or incomplete test coverage in your Objective-C project. Atlas provides a powerful `atlas grep` tool that allows you to search your working diff for common debugging patterns. You can configure Atlas to look for specific strings like `NSLog(@"%@", ...)` or `// TODO: remove debug` within your `.h` and `.m` files. This proactive check helps you identify and clean up these artifacts, maintaining the quality and integrity of your Objective-C codebase before it reaches a reviewer or CI pipeline. ## Running Objective-C tests and formatting with Atlas before commit Before finalizing your Objective-C commit, Atlas facilitates running your `XCTest` suite and `clang-format` directly from the terminal. This ensures your changes pass all 100% of your tests and adhere to your project's coding style, preventing common CI failures and reviewer feedback related to formatting or regressions in 2026. A critical step in self-review is validating that your changes haven't introduced regressions and conform to coding standards. Atlas integrates with your Objective-C toolchain to make this direct. You can use `atlas bash` to execute `xcodebuild test` to run your `XCTest` suite, ensuring all unit and integration tests pass. Similarly, you can invoke `clang-format` over your changed `.h` and `.m` files to automatically apply your project's formatting rules. Atlas can even be configured to run `clang-format` over the changed files behind a permission prompt. This pre-commit validation step, which can also include checking `CocoaPods` dependencies if your `Podfile` was modified, significantly reduces the chances of introducing bugs or style violations into your Objective-C codebase, saving valuable time in the review process. ## Safely reverting unwanted Objective-C changes with Atlas If, during your self-review, you discover an Objective-C change that should not have been made, Atlas offers a safe and efficient session revert mechanism. This feature restores your files from a snapshot, ensuring that unwanted modifications to your `.h` or `.m` files are undone without manual effort, provided the session is not busy with other tasks in 2026. Sometimes, a self-review reveals that a particular change was incorrect or unnecessary. Manually reverting changes in Objective-C projects, especially across multiple `.h` and `.m` files, can be tedious and error-prone. Atlas simplifies this with its session revert capability. This feature restores your working tree from a previous snapshot, effectively undoing any unwanted edits. The revert process is permission-gated and includes a crucial safety check: it refuses to run on a busy session, preventing a half-written turn from being rolled back mid-flight. This ensures that your Objective-C codebase remains in a consistent state, allowing you to confidently experiment and revert without fear of losing critical work or introducing new issues. ## Steps 1. Use `atlas bash git diff` to produce the working diff for your Objective-C project and read it end to end, not just the files you remember touching. 2. Employ `atlas read ` or `atlas read ` for each changed Objective-C file to check the change against its surroundings, as a diff hides everything it did not touch. 3. Run `atlas grep 'NSLog'` or `atlas grep 'XCTSkip'` to search your Objective-C diff for debugging leftovers like temporary logging or skipped `XCTest` cases. 4. If a change to an Objective-C `.h` or `.m` file should not have been made, use `atlas revert` to restore from a snapshot, ensuring the Atlas session is not busy first. 5. Execute `atlas bash xcodebuild test` to run your `XCTest` suite and `atlas bash clang-format -i ` for changed Objective-C files to ensure tests pass and formatting is correct. 6. Once satisfied with your Objective-C changes, use `atlas commit` to stage and create your commit. ## FAQ ### How does Atlas help me review Objective-C header and implementation files? Atlas surfaces a unified diff for all changes across your `.h` and `.m` Objective-C file pairs. You can then use `atlas read` to view the full content of each modified file, ensuring you understand the change in its complete context, crucial for ARC and bridging headers. ### Can Atlas detect `NSLog` statements or skipped `XCTest` cases in my Objective-C diff? Yes, Atlas allows you to use `atlas grep` to search your uncommitted Objective-C diff for specific patterns like `NSLog` calls or `XCTSkip` macros, helping you catch and remove debugging leftovers before committing. ### How do I run `XCTest` and `clang-format` for Objective-C with Atlas? You can execute `atlas bash xcodebuild test` to run your `XCTest` suite. For formatting, use `atlas bash clang-format -i ` on your changed Objective-C `.h` and `.m` files to apply style rules before committing. ### What if I make an unwanted change in an Objective-C file? Can Atlas undo it? Yes, Atlas provides a session revert feature. If you discover an unwanted change in your Objective-C `.h` or `.m` files, `atlas revert` will restore your working tree from a previous snapshot, safely undoing the modification. ### Does Atlas integrate with Objective-C package managers like CocoaPods? Atlas reads your `Podfile` and understands your project's `CocoaPods` dependencies. While it doesn't directly manage pods, you can use `atlas bash pod install` or `pod update` within Atlas to manage your dependencies. ### How does Atlas ensure safety when reverting Objective-C code changes? Atlas's session revert is backed by snapshots, making every edit recoverable. It also includes a safety mechanism that prevents reversion on a busy session, ensuring that a half-written turn is not rolled back mid-flight, preserving your Objective-C work. --- Canonical HTML: https://runatlas.sh/resources/stacks/self-review-a-working-diff-before-committing-in-objective-c Source of truth: aeo_pages row `/resources/stacks/self-review-a-working-diff-before-committing-in-objective-c` (segment: Stacks) (this file is generated from it, never hand-edited). Licence: Atlas is proprietary with a free core. It is not open source and there is no public source repository.