Error in mssql_n adodb driver when the string to insert begins with single quotes...

The parser built into the mssql_n driver has one bug, causing the "N" char not being positioned at the beginning of the resulting string, so, for example, the string:

'''hello' (3 single quotes + hello + 1 single quote)

is being converted to:

''N'hello' (2 single quotes + N + 1 single quote + hello + 1 single quote)

that breaks the SQL execution: it should be:

N'''hello' (N + 3 single quotes + hello + 1 single quote)