[gecko]

You're correct. And they didn't "revert", as GP is saying, but rather added junction points such that "C:\Documents and Settings\All Users\Application Data" is the same as C:\ProgramData, and that junction point was, at least based on my contacts at Microsoft at the time, more added because Microsoft devs were getting annoyed trying to `cd` there than anything else (i.e., explicitly not a repudiation of forcing devs to deal with spaces). The fact it was introduced only in Windows Vista, after everyone'd been forced to deal with it, was intentional.