Does anyone know if MSI (and by extension WiX) supports the use of the
"extended-length' prefix ("\\?\") on folder paths, such as for a directory
property:
INSTALLATIONFOLDER=\\?\D:\somereally_long_name\or_string_of_long_folder_names_of_32,767
characters\

The MSDN document  here
<https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=Windows+Installer+%5C%5C%3F%5C+prefix+to+paths>
  
describes using an 'extended-length path, use the "\\?\" prefix. For
example, "\\?\D:\very long path".'

I looked in the Windows SDK and did not find an answer.  (And by extension
if it is supported in MSI, does Burn support the use of prefixed really long
paths (32,767 characters) in Burn variables to drive a MSI property?)

Thanks; Phill



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