tramp-get-remote-stat fails with locale de_DE.utf8 because of unexpected quotes

[Hendrik Tews]

Hi,

with LANGUAGE=de_DE.utf8 quotes are „ and “ and stat -c '"%N"' /
outputs "„/“", if QUOTING_STYLE=locale.

Consequently,

    (let ((filename "/ssh:localhost:.emacs") (id-format nil))
      (with-parsed-tramp-file-name (expand-file-name filename) nil
        (tramp-get-remote-stat v)))

fails with Tramp 2.5.0.3 and Tramp falls back to use
tramp_perl_file_attributes. In the debug buffer I see

    21:59:57.778873 tramp-send-string (10) # env QUOTING_STYLE=locale \stat -c 
'("%N" %s)' / 2>/dev/null; echo tramp_exit_status $?
    21:59:57.779026 tramp-get-connection-property (7) # process-buffer nil; 
cache used: t
    21:59:57.779200 tramp-get-connection-property (7) # locked nil; cache used: 
nil
    21:59:57.779337 tramp-set-connection-property (7) # locked t
    21:59:57.779505 tramp-flush-connection-property (7) # locked
    21:59:57.779676 tramp-get-connection-property (7) # check-remote-echo nil; 
cache used: nil
    21:59:57.779814 tramp-get-connection-property (7) # check-remote-echo nil; 
cache used: nil
    21:59:57.779957 tramp-get-connection-property (7) # locked nil; cache used: 
nil
    21:59:57.780095 tramp-set-connection-property (7) # locked t
    21:59:57.811717 tramp-accept-process-output (10) # *tramp/ssh askra* nil 
run t
    ("„/“" 4096)

When I set LANGUAGE=en_US.UTF-8, tramp-get-remote-stat returns
the more expected "env QUOTING_STYLE=locale \\stat".

Is this intended?

Best regards,

Hendrik