Currently, the architecture of the CLI is based on (sub)commands and options. Commands are expected to be provided as the first argument, and do effectively decide which feature is to be used. OTOH, options provide parameters to the commands. However, there is no syntactical difference, as both commands and options start with -- or -i. As a result, we rely on properly formating --help and on

VUnit.add_source_files_from_csv() only passes vhdl_standard kwarg to Library.add_source_file(). However, my file gatherer uses .ahd file extensions to denote altera, .xhd to denote xilinx, and so on. I need the file_type available at least so I can tell VUnit that those file types are still vhdl, but all arguments should be available.