This is because the actual command that parses itself (cmd_logging) returns false if it didn't get the expected parameters. Handing the printing however is done by another function. This function is added to the Command struct as setting_function. So if this is set, and the actual command returns false. We should just call the setting_function and not print the error message. Fix https://github.com/profanity-im/profanity/issues/1237