Some tests failed with point as part path

In bat files point (".") used as current directory. Two points ("..") used as parent directory of current directory. The same use is possible in other parts of Windows, but not ROS.

For example, "Start->Run" (ROS vs Windows):

Input:
"."
ROS-result:
C:\ReactOS
Win-result:
C:\Documents and Settings\Admin (similar %userprofile%)

Input:
".."
ROS-result:
C:\
Win-result:
C:\Documents and Settings

Also, the point works in the address bar of the Explorer (test ROS vs Windows):

Open in Explorer "C:\Documents and Settings" and input "\." at end of path in adress bar.
Input
"C:\Documents and Settings\."
ROS-result:
C:\Documents and Settings\Documents and Settings
Win-result
C:\Documents and Settings\.

Input
"C:\Documents and Settings\.."
ROS-result :
C:\Documents and Settings\.. (no result?)
Win-result:
C:\ (parent folder)

Perhaps the point can affect with some functions of WinAPI. If ROS does not process it correctly, programs may not find the files and folders they need.