Voxeles

Seems like this is caused by https://github.com/msys2/msys2-runtime/commit/9944652c41fb96f555d221865f4ed5d0c8b33514 Any path with `:.` or `:..` in it is ignored. For example, this works: ``` $ A="/this:/there" python -c 'import os; print(os.environ["A"])' C:\msys64\this;C:\msys64\there...