They di seem to have fixed this, at least as far as WSL is concerned. If I open a bash shell on Win10 and do `echo foo >/mnt/d/temp/like:this` then I can open the resulting file in Notepad and see the content `foo`. `mkdir like:this` works too. The file or directory name does appear a bit mangled in Explorer, but still works (and still looks like a colon from inside bash).
I think you are right that this used not to work in earlier versions of WSL. You could use colons within the WSL home directory, but not on the mounted NTFS drives. But it seems sorted now.
I think you are right that this used not to work in earlier versions of WSL. You could use colons within the WSL home directory, but not on the mounted NTFS drives. But it seems sorted now.