I wrote:
>
> I will install MSys and friends on my new Windows machine and play
> around to see what works, unless someone comes up with a tested
> solution first.
>
>
Experimentation shows that xcopy is just as braindead about slashes as
copy is. But quoting the paths with backslashes worked, e.g.
system("xcopy \"c:\\foo bar\\baz\" \"c:\\tmp\" /y >nul");
So it appears that we need either to have the paths output with
system-dependant slashes, or, perhaps more flexibly, a new escape
sequences (%P?) which does system-dependent slashes - that would be a
small addition to src/backend/access/transam/xlog.c
cheers
andrew