Constant NAME_MAX [src]

[Each file name component can be] up to the value returned in the lpMaximumComponentLength parameter of the GetVolumeInformation function (this value is commonly 255 characters) from https://learn.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation The value that is stored in the variable that *lpMaximumComponentLength points to is used to indicate that a specified file system supports long names. For example, for a FAT file system that supports long names, the function stores the value 255, rather than the previous 8.3 indicator. Long names can also be supported on systems that use the NTFS file system. from https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-getvolumeinformationw The assumption being made here is that while lpMaximumComponentLength may vary, it will never be larger than 255. TODO: More verification of this assumption.