Does not escape quotes

```
quote('String "with" quotes');
// "String "with" quotes"
```

This would obviously cause some pretty major issues.

Start at the package's quote entry point and trace how embedded quote characters are handled for the example input. Determine the intended escaped output before making the change, then add a regression check wherever this repository keeps its behavior checks; done means quoted input no longer produces ambiguous output.

Written by the indexing model from the issue text.