# Regex Unicode support

## Function

Explain the Unicode matching capabilities of Rust regex.

## Syntax

```bt
regex(pattern, flags)
```

## Parameters

| Parameters | Type | Required | Default value | Description |
| ------ | ------ | ------ | ------ | ------ |
| pattern | String | No | '' | Can be escaped using Unicode characters or Unicode classes. |
| flags | String | No | '' | Regular flags. |

## Return value

| Type | Description |
| ------ | ------ |
| Regex | Returns a Regex object. |

## Example

```bt
rule = regex('Language', '')
result = rule.test('BT Language')

// Output: true
print result
```

## Notes

- BT strings are saved in UTF-8, and regular expressions can directly match Unicode text.