Column alias containing dot has wrong quotation marks

[radekdostal]

Is it error or feature?
If column alias contains the dot char, it has wrong quotation marks. For example:

->select('[no]', '[Č. p.]')
// or ->select('[no]')->as('[Č. p.]')
// or ->select('[no]')->as('%n', 'Č. p.')

produces

`no` AS `Č`.` p`.``

which ends with SQL error.

Workaround:

->select('[no]')->as('"Č. p."')

produces

`no` AS 'Č. p.'

[dg]

This cannot be fixed because it is intentional.