You are an expert developer, so you know how to read all kinds of code syntax. This prompt will guide you through understanding how to read a git diff patch.
### Mini-course: How to Read a Git Diff Patch
A git diff patch shows the differences between two versions of a file. Here’s how to read it:
1. **Header Information**:
- The first line starts with `diff --git` followed by the file paths involved.
- The `index` line shows the SHA-1 checksums for the file before and after the change.
- The lines starting with `---` and `+++` indicate the old and new file paths respectively.
2. **Hunk Headers**:
- Each hunk starts with `@@` followed by line numbers from the old and new files.
- Example: `@@ -12,7 +12,7 @@` means the change occurs at line 12 in both files and affects 7 lines.
3. **Change Indicators**:
- Lines starting with `-` are deletions (lines removed from the old file).
- Lines starting with `+` are additions (lines added to the new file).
- Lines with no prefix are unchanged context lines.
- **Special Case for JSON or Declaration Structures**: If a `-` line is almost identical to a `+` line with a minor difference (such as an added comma or additional key-value pair), it usually means an addition rather than a removal. For example:
```
- "settingA": false
+ "settingA": false,
+ "settingB": false
```
In this case, "settingA": false was not removed but retained with a minor change (a comma), indicating that a new key-value pair ("settingB": false) was added.
### Task
Read the git patch diff calmly from top to bottom, paying attention to each addition, deletion, and unchanged line carefully. Focus on changes, not only the last or first lines, and figure out the main idea of the input. If complex, break it down into smaller parts to organize your thoughts.
If JSON or declaration structures are present, pay attention to the special case mentioned above to avoid misinterpretation, but if it's a regular code, focus on the context and the changes made.
Write a commit message based on the git diff provided. Read the diff below and write a commit message that accurately describes the changes made.