"source.fixAll.eslint": true
    },
    "format_on_save": "on"
  }
}
```

### Troubleshooting

If you encounter issues with formatting or linting:

1. Check Zed's log file for error messages (Use the command palette: `zed: open log`)
2. Ensure external tools (formatters, linters) are correctly installed and in your PATH
3. Verify configurations in both Zed settings and language-specific config files (e.g., `.eslintrc`, `.prettierrc`)

## Syntax Highlighting and Themes

Zed offers customization options for syntax highlighting and themes, allowing you to tailor the visual appearance of your code.

### Customizing Syntax Highlighting

Zed uses Tree-sitter grammars for syntax highlighting. Override the default highlighting using the `experimental.theme_overrides` setting.

This example makes comments italic and changes the color of strings:

```json
"experimental.theme_overrides": {
  "syntax": {
    "comment": {
      "font_style": "italic"
    },
    "string": {
      "color": "#00AA00"
    }
  }
}
```

### Selecting and Customizing Themes

Change your theme:

1. Use the theme selector ({#kb theme_selector::Toggle})
2. Or set it in your `settings.json`:

```json
"theme": {
  "mode": "dark",
  "dark": "One Dark",
  "light": "GitHub Light"
}
```

Create custom themes by creating a JSON file in `~/.config/zed/themes/`. Zed will automatically detect and make available any themes in this directory.

### Using Theme Extensions

Zed supports theme extensions. Browse and install theme extensions from the Extensions panel ({#kb zed::Extensions}).

To create your own theme extension, refer to the [Developing Theme Extensions](./extensions/themes.md) guide.

## Using Language Server Features

### Inlay Hints

Inlay hints provide additional information inline in your code, such as parameter names or inferred types. Configure inlay hints in your `settings.json`:

```json
"inlay_hints": {
  "enabled": true,
  "show_type_hints": true,
  "show_parameter_hints": true,
  "show_other_hints": true
}
```

For language-specific inlay hint settings, refer to the documentation for each language.