Uncrustify: Where do the options work?

Spaces for for loop

{
        for (i = 0█;█i < 10█;█i++)
        {
                b = i + 1;
        }

        for (█;█;█)
        {
                b = b + 1;
        }
}

Register

sp_before_semi_for	Add or remove space before ';' in non-empty 'for' statements.
sp_before_semi_for_empty	Add or remove space before a semicolon of an empty part of a for statement.
sp_after_semi_for	Add or remove space after ';' in non-empty 'for' statements. Default=Force.
sp_after_semi_for_empty	Add or remove space after the final semicolon of an empty part of a for statement: for ( ; ; <here> ).