Windows absolute path

Using ":" as separator create some issue for windows absolute path utilization .

test case:
--include unisim:%XILINX_VIVADO%/data/vhdl/src/unisims
expands into:
C:\Xilinx\Vivado\2019.1\data\vhdl\src\unisims
where C wrongly threated as unisim library version.

So version should be specified explicitly in this case as workaround.

Look at the path parsing logic in the codebase, likely in a file handling command-line arguments or path expansion. The issue is about how ':' is interpreted on Windows when an absolute path like C:\... is involved. Start by finding where library version separation occurs and test the provided case. Check if there are existing tests for Windows path handling.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.