| scrollbar               | Object that controls the scrollbar display. Set to `{ "show": "never" }` to hide the scroll bar.                                                              | `{ "show": "auto" }` |
| scroll_beyond_last_line | If set to `"one_page"`, allows scrolling up to one page beyond the last line. Set to `"off"` to prevent this behavior.                                        | `"one_page"`         |
| vertical_scroll_margin  | The number of lines to keep above or below the cursor when scrolling. Set to `0` to allow the cursor to go up to the edges of the screen vertically.          | `3`                  |
| gutter.line_numbers     | Controls the display of line numbers in the gutter. Set the `"line_numbers"` property to `false` to hide line numbers.                                        | `true`               |
| command_aliases         | Object that defines aliases for commands in the command palette. You can use it to define shortcut names for commands you use often. Read below for examples. | `{}`                 |

Here's an example of these settings changed:

```json
{
  // Disable cursor blink
  "cursor_blink": false,
  // Use relative line numbers
  "relative_line_numbers": true,
  // Hide the scroll bar
  "scrollbar": { "show": "never" },
  // Prevent the buffer from scrolling beyond the last line
  "scroll_beyond_last_line": "off",
  // Allow the cursor to reach the edges of the screen
  "vertical_scroll_margin": 0,
  "gutter": {
    // Disable line numbers completely:
    "line_numbers": false
  },
  "command_aliases": {
    "W": "w",
    "Wq": "wq",
    "Q": "q"
  }
}
```

The `command_aliases` property is a single object that maps keys or key sequences to vim mode commands. The example above defines multiple aliases: `W` for `w`, `Wq` for `wq`, and `Q` for `q`.

## Regex differences

Zed uses a different regular expression engine from Vim. This means that you will have to use a different syntax in some cases. Here are the most common differences:

- **Capture groups**: Vim uses `\(` and `\)` to represent capture groups, in Zed these are `(` and `)`. On the flip side, in Vim, `(` and `)` represent literal parentheses, but in Zed these must be escaped to `\(` and `\)`.
- **Matches**: When replacing, Vim uses the backslash character followed by a number to represent a matched capture group. For example, `\1`. Zed uses the dollar sign instead. So, when in Vim you use `\0` to represent the entire match, in Zed the syntax is `$0` instead. Same for numbered capture groups: `\1` in Vim is `$1` in Zed.
- **Global option**: By default, in Vim, regex searches only match the first occurrence on a line, and you append `/g` at the end of your query to find all matches. In Zed, regex searches are global by default.
- **Case sensitivity**: Vim uses `/i` to indicate a case-insensitive search. In Zed you can either write `(?i)` at the start of the pattern or toggle case-sensitivity with the shortcut {#kb search::ToggleCaseSensitive}.

> **Note**: To help with the transition, the command palette will fix parentheses and replace groups for you when you write a Vim-style substitute command, `:%s//`. So, Zed will convert `%s:/\(a\)(b)/\1/` into a search for "(a)\(b\)" and a replacement of "$1".

For the full syntax supported by Zed's regex engine [see the regex crate documentation](https://docs.rs/regex/latest/regex/#syntax).