In computer typography, a white space is any character representing a horizontal or vertical space. When such whitespace characters are rendered, it will typically occupy space on a page, but its resulting appearance with be a ‘blank’. There are various whitespace characters representing various ‘space’ widths. Only the ASCII Space (0×20) and ASCII Period (0×24) characters are handled specially by the Object Manager.
Can you use whitespace characters in File and Folder names?
Windows 8, Windows RT and Windows Server 2012 treat Whitespace characters in File and Folder names as follows:
1. If a file is saved as ‘ Twc.txt’, where the leading character(s) is an ASCII Space (0×20), it will be saved as ‘Twc.txt’
2. If a file is saved as ‘Twc.txt ‘, where the trailing character(s) is an ASCII Space (0×20), it will be saved as ‘Twc.txt’.
3. If a file is saved as ‘ Twc.txt’, where the leading character(s) is an alternate whitespace character, such as the Ideographic Space (0×3000), it will be saved as ‘ Twc.txt ‘. The leading whitespace characters are not removed.
4. If a file is saved as ‘Twc.txt ‘, where the trailing character(s) is an alternate whitespace character, such as the Ideographic Space (0×3000), it will be saved as ‘Twc.txt ‘. The trailing whitespace characters are not removed.
5. If a file is saved as ‘.Twc.txt’, where the leading character(s) is an ASCII Period (0x2E), it will be saved as ‘.Twc.txt’.
6. If a file is saved as ‘Twc.txt.’, where the trailing character(s) is an ASCII Period (0x2E), it will be saved as ‘Twc.txt’.
Win32 and WinRT APIs have different ecosystem requirements, as a result of which, File and Folder names that begin or end with a whitespace character are enumerated differently by each of them
You can read more at
KB2829981.
source:thewindowsclub
