Connecting to a server with an empty password

My local server has a user with an empty password. To connect to the server, passing `-P ""` does not work (i.e. the client prompts for Password anyway).
Also setting the environment variable MSSQL_CLI_PASSWORD to "" has the same effect.

Is there a way to pass an empty password without being prompted ?

Start by locating the command-line handling for `-P` and the `MSSQL_CLI_PASSWORD` environment variable, then trace how an empty value reaches password prompting. Confirm the expected behavior against the issue: an explicitly empty password should connect without prompting.

Written by the indexing model from the issue text.