Is quotes in tramp-find-inline-compress needed in MS-Windows?

[Chris Zheng]

Hi all,

The function `tramp-find-inline-compress' in tramp-sh.el has the code:

(format
 ;; Windows shells need the program file name after
 ;; the pipe symbol be quoted if they use forward
 ;; slashes as directory separators.
 (if (memq system-type '(windows-nt))
     "echo %s | \"%s\" | \"%s\""
   "echo %s | %s | %s")
 magic compress decompress)

which says the commands need to be quoted in MS-Windows. But In
MS-Windows 8.1 I get

M-& echo xyzzy | gzip | gzip -d RET
⇒ Success.

M-& echo xyzzy | \"gzip\" | \"gzip -d\" RET
⇒ Error.

This makes me think is the quotes needed?

Thank you,

Chris