`cabal user-config diff` returns garbage on windows

[hasufell]

Add the following to global cabal.config:

extra-include-dirs: C:\ghcup\msys64\mingw64\include
extra-lib-dirs: C:\ghcup\msys64\mingw64\lib
extra-prog-path: C:\ghcup\bin,
                 C:\cabal\bin,
                 C:\ghcup\msys64\mingw64\bin,
                 C:\ghcup\msys64\usr\bin

cabal user-config diff will return:

+ C: \ghcup\msys64\usr\bin
+ extra-include-dirs: C:\ghcup\msys64\mingw64\include
+ extra-lib-dirs: C:\ghcup\msys64\mingw64\lib
+ extra-prog-path: C:\ghcup\bin,

cabal-install version 3.10.2.1.