(tramp-handle-directory-files-and-attributes): New function.

(tramp-perl-directory-files-and-attributes): New constant.
(tramp-file-name-handler-alist): Delete file-directory-files, add directory-files-and-attributes.
(tramp-perl-file-attributes): Surround uid and gid by double quotes.
Change parameter id-format from nonnumeric.
(tramp-convert-file-attributes): New function.
(tramp-handle-file-attributes): Use it.
(tramp-maybe-send-perl-script): New function.
(tramp-handle-file-attributes-with-perl): Use it. Don't convert	file mode.
Change parameter id-format from nonnumeric.
(tramp-handle-file-attributes-with-ls): Change parameter id-format from nonnumeric.
(tramp-post-connection): Don't send tramp-perl-file-attributes script.
Reset connection property "perl-scripts".
(tramp-handle-insert-directory): Run real handler when ls-lisp is in use.

2 files changed, 315 insertions, 171 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 51fb165e182..b5b9ef6cf0d 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,26 @@
 2004-11-26  Lars Hansen  <larsh@math.ku.dk>
 
+        * tramp.el (tramp-handle-directory-files-and-attributes): New
+        function.
+        (tramp-perl-directory-files-and-attributes): New constant.
+        (tramp-file-name-handler-alist): Delete file-directory-files, add
+        directory-files-and-attributes.
+        (tramp-perl-file-attributes): Surround uid and gid by double
+        quotes. Change parameter id-format from nonnumeric.
+        (tramp-convert-file-attributes): New function.
+        (tramp-handle-file-attributes): Use it.
+        (tramp-maybe-send-perl-script): New function.
+        (tramp-handle-file-attributes-with-perl): Use it. Don't convert
+        file mode. Change parameter id-format from nonnumeric.
+        (tramp-handle-file-attributes-with-ls): Change parameter id-format
+        from nonnumeric.
+        (tramp-post-connection): Don't send tramp-perl-file-attributes
+        script. Reset connection property "perl-scripts".
+        (tramp-handle-insert-directory): Run real handler when ls-lisp is
+        in use.
+
+2004-11-26  Lars Hansen  <larsh@math.ku.dk>
+
         * desktop.el (desktop-read): Replace mapcar with mapc.
         (desktop-create-buffer): Replace mapcar with mapc. Remove
         redundant piece of code.
diff --git a/lisp/net/tramp.el b/lisp/net/tramp.el
index 502dc5e5115..8310995a09b 100644
--- a/lisp/net/tramp.el
+++ b/lisp/net/tramp.el
@@ -1547,20 +1547,92 @@ them we have this shell function.")
 ;; The device number is returned as "-1", because there will be a virtual
 ;; device number set in `tramp-handle-file-attributes'
 (defconst tramp-perl-file-attributes "\
-\($f, $n) = @ARGV;
-@s = lstat($f);
-if (($s[2] & 0170000) == 0120000) { $l = readlink($f); $l = \"\\\"$l\\\"\"; }
-elsif (($s[2] & 0170000) == 040000) { $l = \"t\"; }
-else { $l = \"nil\" };
-$u = ($n eq \"nil\") ? $s[4] : getpwuid($s[4]);
-$g = ($n eq \"nil\") ? $s[5] : getgrgid($s[5]);
-printf(\"(%s %u %s %s (%u %u) (%u %u) (%u %u) %u %u t (%u . %u) -1)\\n\",
-$l, $s[3], $u, $g, $s[8] >> 16 & 0xffff, $s[8] & 0xffff,
-$s[9] >> 16 & 0xffff, $s[9] & 0xffff, $s[10] >> 16 & 0xffff, $s[10] & 0xffff,
-$s[7], $s[2], $s[1] >> 16 & 0xffff, $s[1] & 0xffff);"
+@stat = lstat($ARGV[0]);
+if (($stat[2] & 0170000) == 0120000)
+{
+    $type = readlink($ARGV[0]);
+    $type = \"\\\"$type\\\"\";
+}
+elsif (($stat[2] & 0170000) == 040000)
+{
+    $type = \"t\";
+}
+else
+{
+    $type = \"nil\"
+};
+$uid = ($ARGV[1] eq \"integer\") ? $stat[4] : \"\\\"\" . getpwuid($stat[4]) . \"\\\"\";
+$gid = ($ARGV[1] eq \"integer\") ? $stat[5] : \"\\\"\" . getgrgid($stat[5]) . \"\\\"\";
+printf(
+    \"(%s %u %s %s (%u %u) (%u %u) (%u %u) %u %u t (%u . %u) -1)\\n\",
+    $type,
+    $stat[3],
+    $uid,
+    $gid,
+    $stat[8] >> 16 & 0xffff,
+    $stat[8] & 0xffff,
+    $stat[9] >> 16 & 0xffff,
+    $stat[9] & 0xffff,
+    $stat[10] >> 16 & 0xffff,
+    $stat[10] & 0xffff,
+    $stat[7],
+    $stat[2],
+    $stat[1] >> 16 & 0xffff,
+    $stat[1] & 0xffff
+);"
   "Perl script to produce output suitable for use with `file-attributes'
 on the remote file system.")
 
+(defconst tramp-perl-directory-files-and-attributes "\
+chdir($ARGV[0]);
+opendir(DIR,\".\");
+@list = readdir(DIR);
+closedir(DIR);
+$n = scalar(@list);
+printf(\"(\\n\");
+for($i = 0; $i < $n; $i++)
+{
+    $filename = $list[$i];
+    @stat = lstat($filename);
+    if (($stat[2] & 0170000) == 0120000)
+    {
+        $type = readlink($filename);
+        $type = \"\\\"$type\\\"\";
+    }
+    elsif (($stat[2] & 0170000) == 040000)
+    {
+        $type = \"t\";
+    }
+    else
+    {
+        $type = \"nil\"
+    };
+    $uid = ($ARGV[1] eq \"integer\") ? $stat[4] : \"\\\"\" . getpwuid($stat[4]) . \"\\\"\";
+    $gid = ($ARGV[1] eq \"integer\") ? $stat[5] : \"\\\"\" . getgrgid($stat[5]) . \"\\\"\";
+    printf(
+        \"(\\\"%s\\\" %s %u %s %s (%u %u) (%u %u) (%u %u) %u %u t (%u . %u) (%u %u))\\n\",
+        $filename,
+        $type,
+        $stat[3],
+        $uid,
+        $gid,
+        $stat[8] >> 16 & 0xffff,
+        $stat[8] & 0xffff,
+        $stat[9] >> 16 & 0xffff,
+        $stat[9] & 0xffff,
+        $stat[10] >> 16 & 0xffff,
+        $stat[10] & 0xffff,
+        $stat[7],
+        $stat[2],
+        $stat[1] >> 16 & 0xffff,
+        $stat[1] & 0xffff,
+        $stat[0] >> 16 & 0xffff,
+        $stat[0] & 0xffff);
+}
+printf(\")\\n\");"
+  "Perl script implementing `directory-files-attributes' as Lisp `read'able
+output.")
+
 ;; ;; These two use uu encoding.
 ;; (defvar tramp-perl-encode "%s -e'\
 ;; print qq(begin 644 xxx\n);
@@ -1759,8 +1831,8 @@ on the FILENAME argument, even if VISIT was a string.")
     (file-newer-than-file-p . tramp-handle-file-newer-than-file-p)
     (file-attributes . tramp-handle-file-attributes)
     (file-modes . tramp-handle-file-modes)
-    (file-directory-files . tramp-handle-file-directory-files)
     (directory-files . tramp-handle-directory-files)
+    (directory-files-and-attributes . tramp-handle-directory-files-and-attributes)
     (file-name-all-completions . tramp-handle-file-name-all-completions)
     (file-name-completion . tramp-handle-file-name-completion)
     (add-name-to-file . tramp-handle-add-name-to-file)
@@ -2170,26 +2242,21 @@ target of the symlink differ."
 ;; Daniel Pittman <daniel@danann.net>
 (defun tramp-handle-file-attributes (filename &optional id-format)
   "Like `file-attributes' for tramp files."
-  (let ((nonnumeric (and id-format (equal id-format 'string)))
-        result)
+  (when (file-exists-p filename)
+    ;; file exists, find out stuff
+    (unless id-format (setq id-format 'integer))
     (with-parsed-tramp-file-name filename nil
-      (when (file-exists-p filename)
-        ;; file exists, find out stuff
-        (save-excursion
-          (if (tramp-get-remote-perl multi-method method user host)
-              (setq result
-                    (tramp-handle-file-attributes-with-perl
-                     multi-method method user host localname nonnumeric))
-            (setq result
-                  (tramp-handle-file-attributes-with-ls
-                   multi-method method user host localname nonnumeric)))
-          ;; set virtual device number
-          (setcar (nthcdr 11 result)
-                  (tramp-get-device multi-method method user host)))))
-    result))
+      (save-excursion
+        (tramp-convert-file-attributes
+         multi-method method user host
+         (if (tramp-get-remote-perl multi-method method user host)
+             (tramp-handle-file-attributes-with-perl multi-method method user host
+                                                     localname id-format)
+           (tramp-handle-file-attributes-with-ls multi-method method user host
+                                                 localname id-format)))))))
 
 (defun tramp-handle-file-attributes-with-ls
-  (multi-method method user host localname &optional nonnumeric)
+  (multi-method method user host localname &optional id-format)
   "Implement `file-attributes' for tramp files using the ls(1) command."
   (let (symlinkp dirp
                  res-inode res-filemodes res-numlinks
@@ -2202,7 +2269,7 @@ target of the symlink differ."
      multi-method method user host
      (format "%s %s %s"
              (tramp-get-ls-command multi-method method user host)
-             (if nonnumeric "-ild" "-ildn")
+             (if (eq id-format 'integer) "-ildn" "-ild")
              (tramp-shell-quote-argument localname)))
     (tramp-wait-for-output)
     ;; parse `ls -l' output ...
@@ -2229,7 +2296,7 @@ target of the symlink differ."
     ;; ... uid and gid
     (setq res-uid (read (current-buffer)))
     (setq res-gid (read (current-buffer)))
-    (unless nonnumeric
+    (when (eq id-format 'integer)
       (unless (numberp res-uid) (setq res-uid -1))
       (unless (numberp res-gid) (setq res-gid -1)))
     ;; ... size
@@ -2274,33 +2341,20 @@ target of the symlink differ."
      )))
 
 (defun tramp-handle-file-attributes-with-perl
-  (multi-method method user host localname &optional nonnumeric)
-  "Implement `file-attributes' for tramp files using a Perl script.
-
-The Perl command is sent to the remote machine when the connection
-is initially created and is kept cached by the remote shell."
+  (multi-method method user host localname &optional id-format)
+  "Implement `file-attributes' for tramp files using a Perl script."
   (tramp-message-for-buffer multi-method method user host 10
                             "file attributes with perl: %s"
                             (tramp-make-tramp-file-name
                              multi-method method user host localname))
-  (tramp-send-command
-   multi-method method user host
-   (format "tramp_file_attributes %s %s"
-           (tramp-shell-quote-argument localname) nonnumeric))
+  (tramp-maybe-send-perl-script tramp-perl-file-attributes
+                                "tramp_file_attributes"
+                                multi-method method user host)
+  (tramp-send-command multi-method method user host
+                      (format "tramp_file_attributes %s %s"
+                              (tramp-shell-quote-argument localname) id-format))
   (tramp-wait-for-output)
-  (let ((result (read (current-buffer))))
-    (setcar (nthcdr 8 result)
-            (tramp-file-mode-from-int (nth 8 result)))
-    result))
-
-(defun tramp-get-device (multi-method method user host)
-  "Returns the virtual device number.
-If it doesn't exist, generate a new one."
-  (let ((string (tramp-make-tramp-file-name multi-method method user host "")))
-    (unless (assoc string tramp-devices)
-      (add-to-list 'tramp-devices
-                   (list string (length tramp-devices))))
-    (list -1 (nth 1 (assoc string tramp-devices)))))
+  (read (current-buffer)))
 
 (defun tramp-handle-set-visited-file-modtime (&optional time-list)
   "Like `set-visited-file-modtime' for tramp files."
@@ -2628,6 +2682,38 @@ if the remote host can't provide the modtime."
                   (push item result)))))))
       result)))
 
+(defun tramp-handle-directory-files-and-attributes
+  (directory &optional full match nosort id-format)
+  "Like `directory-files-and-attributes' for tramp files."
+  (when (tramp-handle-file-exists-p directory)
+    (save-excursion
+      (setq directory (tramp-handle-expand-file-name directory))
+      (with-parsed-tramp-file-name directory nil
+        (tramp-maybe-send-perl-script tramp-perl-directory-files-and-attributes
+                                      "tramp_directory_files_and_attributes"
+                                      multi-method method user host)
+        (tramp-send-command multi-method method user host
+                            (format "tramp_directory_files_and_attributes %s %s"
+                                    (tramp-shell-quote-argument localname)
+                                    (or id-format 'integer)))
+        (tramp-wait-for-output)
+        (let* ((root (cons nil (read (current-buffer))))
+               (cell root))
+          (while (cdr cell)
+            (if (and match (not (string-match match (caadr cell))))
+                ;; Remove from list
+                (setcdr cell (cddr cell))
+              ;; Include in list
+              (setq cell (cdr cell))
+              (let ((l (car cell)))
+                (tramp-convert-file-attributes multi-method method user host
+                                               (cdr l))
+                ;; If FULL, make file name absolute
+                (when full (setcar l (concat directory "/" (car l)))))))
+          (if nosort
+              (cdr root)
+            (sort (cdr root) (lambda (x y) (string< (car x) (car y))))))))))
+
 ;; This function should return "foo/" for directories and "bar" for
 ;; files.  We use `ls -ad' to get a list of files (including
 ;; directories), and `find . -type d \! -name . -prune' to get a list
@@ -3186,83 +3272,87 @@ This is like `dired-recursive-delete-directory' for tramp files."
 (defun tramp-handle-insert-directory
   (filename switches &optional wildcard full-directory-p)
   "Like `insert-directory' for tramp files."
-  ;; For the moment, we assume that the remote "ls" program does not
-  ;; grok "--dired".  In the future, we should detect this on
-  ;; connection setup.
-  (when (string-match "^--dired\\s-+" switches)
-    (setq switches (replace-match "" nil t switches)))
-  (setq filename (expand-file-name filename))
-  (with-parsed-tramp-file-name filename nil
-    (tramp-message-for-buffer
-     multi-method method user host 10
-     "Inserting directory `ls %s %s', wildcard %s, fulldir %s"
-     switches filename (if wildcard "yes" "no")
-     (if full-directory-p "yes" "no"))
-    (when wildcard
-      (setq wildcard (file-name-nondirectory localname))
-      (setq localname (file-name-directory localname)))
-    (when (listp switches)
-      (setq switches (mapconcat 'identity switches " ")))
-    (unless full-directory-p
-      (setq switches (concat "-d " switches)))
-    (when wildcard
-      (setq switches (concat switches " " wildcard)))
-    (save-excursion
-      ;; If `full-directory-p', we just say `ls -l FILENAME'.
-      ;; Else we chdir to the parent directory, then say `ls -ld BASENAME'.
-      (if full-directory-p
-          (tramp-send-command
-           multi-method method user host
-           (format "%s %s %s"
-                   (tramp-get-ls-command multi-method method user host)
-                   switches
-                   (if wildcard
-                       localname
-                     (tramp-shell-quote-argument (concat localname ".")))))
-        (tramp-barf-unless-okay
-         multi-method method user host
-         (format "cd %s" (tramp-shell-quote-argument
-                          (file-name-directory localname)))
-         nil 'file-error
-         "Couldn't `cd %s'"
-         (tramp-shell-quote-argument (file-name-directory localname)))
-        (tramp-send-command
-         multi-method method user host
-         (format "%s %s %s"
-                 (tramp-get-ls-command multi-method method user host)
-                 switches
-                 (if wildcard
-                     localname
-                   (tramp-shell-quote-argument
-                    (file-name-nondirectory localname))))))
-      (sit-for 1)                       ;needed for rsh but not ssh?
-      (tramp-wait-for-output))
-    ;; The following let-binding is used by code that's commented
-    ;; out.  Let's leave the let-binding in for a while to see
-    ;; that the commented-out code is really not needed.  Commenting-out
-    ;; happened on 2003-03-13.
-    (let ((old-pos (point)))
-      (insert-buffer-substring
-       (tramp-get-buffer multi-method method user host))
-      ;; On XEmacs, we want to call (exchange-point-and-mark t), but
-      ;; that doesn't exist on Emacs, so we use this workaround instead.
-      ;; Since zmacs-region-stays doesn't exist in Emacs, this ought to
-      ;; be safe.  Thanks to Daniel Pittman <daniel@danann.net>.
-      ;;     (let ((zmacs-region-stays t))
-      ;;       (exchange-point-and-mark))
+  (if (and (boundp 'ls-lisp-use-insert-directory-program)
+           (not ls-lisp-use-insert-directory-program))
+      (tramp-run-real-handler 'insert-directory
+                              (list filename switches wildcard full-directory-p))
+    ;; For the moment, we assume that the remote "ls" program does not
+    ;; grok "--dired".  In the future, we should detect this on
+    ;; connection setup.
+    (when (string-match "^--dired\\s-+" switches)
+      (setq switches (replace-match "" nil t switches)))
+    (setq filename (expand-file-name filename))
+    (with-parsed-tramp-file-name filename nil
+      (tramp-message-for-buffer
+       multi-method method user host 10
+       "Inserting directory `ls %s %s', wildcard %s, fulldir %s"
+       switches filename (if wildcard "yes" "no")
+       (if full-directory-p "yes" "no"))
+      (when wildcard
+        (setq wildcard (file-name-nondirectory localname))
+        (setq localname (file-name-directory localname)))
+      (when (listp switches)
+        (setq switches (mapconcat 'identity switches " ")))
+      (unless full-directory-p
+        (setq switches (concat "-d " switches)))
+      (when wildcard
+        (setq switches (concat switches " " wildcard)))
       (save-excursion
-        (tramp-send-command multi-method method user host "cd")
-        (tramp-wait-for-output))
-      ;; For the time being, the XEmacs kludge is commented out.
-      ;; Please test it on various XEmacs versions to see if it works.
-;;       ;; Another XEmacs specialty follows.  What's the right way to do
-;;       ;; it?
-;;       (when (and (featurep 'xemacs)
-;;               (eq major-mode 'dired-mode))
-;;      (save-excursion
-;;        (require 'dired)
-;;        (dired-insert-set-properties old-pos (point))))
-      )))
+        ;; If `full-directory-p', we just say `ls -l FILENAME'.
+        ;; Else we chdir to the parent directory, then say `ls -ld BASENAME'.
+        (if full-directory-p
+            (tramp-send-command
+             multi-method method user host
+             (format "%s %s %s"
+                     (tramp-get-ls-command multi-method method user host)
+                     switches
+                     (if wildcard
+                         localname
+                       (tramp-shell-quote-argument (concat localname ".")))))
+          (tramp-barf-unless-okay
+           multi-method method user host
+           (format "cd %s" (tramp-shell-quote-argument
+                            (file-name-directory localname)))
+           nil 'file-error
+           "Couldn't `cd %s'"
+           (tramp-shell-quote-argument (file-name-directory localname)))
+          (tramp-send-command
+           multi-method method user host
+           (format "%s %s %s"
+                   (tramp-get-ls-command multi-method method user host)
+                   switches
+                   (if wildcard
+                       localname
+                     (tramp-shell-quote-argument
+                      (file-name-nondirectory localname))))))
+        (sit-for 1)                     ;needed for rsh but not ssh?
+        (tramp-wait-for-output))
+      ;; The following let-binding is used by code that's commented
+      ;; out.  Let's leave the let-binding in for a while to see
+      ;; that the commented-out code is really not needed.  Commenting-out
+      ;; happened on 2003-03-13.
+      (let ((old-pos (point)))
+        (insert-buffer-substring
+         (tramp-get-buffer multi-method method user host))
+        ;; On XEmacs, we want to call (exchange-point-and-mark t), but
+        ;; that doesn't exist on Emacs, so we use this workaround instead.
+        ;; Since zmacs-region-stays doesn't exist in Emacs, this ought to
+        ;; be safe.  Thanks to Daniel Pittman <daniel@danann.net>.
+        ;;     (let ((zmacs-region-stays t))
+        ;;       (exchange-point-and-mark))
+        (save-excursion
+          (tramp-send-command multi-method method user host "cd")
+          (tramp-wait-for-output))
+        ;; For the time being, the XEmacs kludge is commented out.
+        ;; Please test it on various XEmacs versions to see if it works.
+        ;;       ;; Another XEmacs specialty follows.  What's the right way to do
+        ;;       ;; it?
+        ;;       (when (and (featurep 'xemacs)
+        ;;               (eq major-mode 'dired-mode))
+        ;;      (save-excursion
+        ;;        (require 'dired)
+        ;;        (dired-insert-set-properties old-pos (point))))
+        ))))
 
 ;; Continuation of kluge to pacify byte-compiler.
 ;;(eval-when-compile
@@ -4679,6 +4769,29 @@ User may be nil."
 
 ;;; Internal Functions:
 
+(defun tramp-maybe-send-perl-script (script name multi-method method user host)
+  "Define in remote shell function NAME implemented as perl SCRIPT.
+Only send the definition if it has not already been done.
+Function may have 0-3 parameters."
+  (let ((remote-perl (tramp-get-remote-perl multi-method method user host)))
+    (unless remote-perl (error "No remote perl"))
+    (let ((perl-scripts (tramp-get-connection-property "perl-scripts" nil
+                                                       multi-method method user host)))
+      (unless (memq name perl-scripts)
+        (with-current-buffer (tramp-get-buffer multi-method method user host)
+          (tramp-message 5 (concat "Sending the Perl script `" name "'..."))
+          (tramp-send-string multi-method method user host
+                             (concat name
+                                     " () {\n"
+                                     remote-perl
+                                     " -e '"
+                                     script
+                                     "' \"$1\" \"$2\" \"$3\" 2>/dev/null\n}"))
+          (tramp-wait-for-output)
+          (tramp-set-connection-property "perl-scripts" (cons name perl-scripts)
+                                         multi-method method user host)
+          (tramp-message 5 (concat "Sending the Perl script `" name "'...done.")))))))
+
 (defun tramp-set-auto-save ()
   (when (and (buffer-file-name)
              (tramp-tramp-file-p (buffer-file-name))
@@ -5859,6 +5972,7 @@ locale to C and sets up the remote shell search path."
   (tramp-wait-for-output)
   ;; Find a `perl'.
   (erase-buffer)
+  (tramp-set-connection-property "perl-scripts" nil multi-method method user host)
   (let ((tramp-remote-perl
          (or (tramp-find-executable multi-method method user host
                                     "perl5" tramp-remote-path nil)
@@ -5867,48 +5981,37 @@ locale to C and sets up the remote shell search path."
     (when tramp-remote-perl
       (tramp-set-connection-property "perl" tramp-remote-perl
                                      multi-method method user host)
-      ;; Set up stat in Perl if we can.
-      (when tramp-remote-perl
-        (tramp-message 5 "Sending the Perl `file-attributes' implementation.")
-        (tramp-send-string
-         multi-method method user host
-         (concat "tramp_file_attributes () {\n"
-                 tramp-remote-perl
-                 " -e '" tramp-perl-file-attributes "'"
-                 " \"$1\" \"$2\" 2>/dev/null\n"
-                 "}"))
-        (tramp-wait-for-output)
-        (unless (tramp-method-out-of-band-p multi-method method user host)
-          (tramp-message 5 "Sending the Perl `mime-encode' implementations.")
-          (tramp-send-string
-           multi-method method user host
-           (concat "tramp_encode () {\n"
-                   (format tramp-perl-encode tramp-remote-perl)
-                   " 2>/dev/null"
-                   "\n}"))
-          (tramp-wait-for-output)
-          (tramp-send-string
-           multi-method method user host
-           (concat "tramp_encode_with_module () {\n"
-                   (format tramp-perl-encode-with-module tramp-remote-perl)
-                   " 2>/dev/null"
-                   "\n}"))
-          (tramp-wait-for-output)
-          (tramp-message 5 "Sending the Perl `mime-decode' implementations.")
-          (tramp-send-string
-           multi-method method user host
-           (concat "tramp_decode () {\n"
-                   (format tramp-perl-decode tramp-remote-perl)
-                   " 2>/dev/null"
-                   "\n}"))
-          (tramp-wait-for-output)
-          (tramp-send-string
-           multi-method method user host
-           (concat "tramp_decode_with_module () {\n"
-                   (format tramp-perl-decode-with-module tramp-remote-perl)
-                   " 2>/dev/null"
-                   "\n}"))
-          (tramp-wait-for-output)))))
+      (unless (tramp-method-out-of-band-p multi-method method user host)
+        (tramp-message 5 "Sending the Perl `mime-encode' implementations.")
+        (tramp-send-string
+         multi-method method user host
+         (concat "tramp_encode () {\n"
+                 (format tramp-perl-encode tramp-remote-perl)
+                 " 2>/dev/null"
+                 "\n}"))
+        (tramp-wait-for-output)
+        (tramp-send-string
+         multi-method method user host
+         (concat "tramp_encode_with_module () {\n"
+                 (format tramp-perl-encode-with-module tramp-remote-perl)
+                 " 2>/dev/null"
+                 "\n}"))
+        (tramp-wait-for-output)
+        (tramp-message 5 "Sending the Perl `mime-decode' implementations.")
+        (tramp-send-string
+         multi-method method user host
+         (concat "tramp_decode () {\n"
+                 (format tramp-perl-decode tramp-remote-perl)
+                 " 2>/dev/null"
+                 "\n}"))
+        (tramp-wait-for-output)
+        (tramp-send-string
+         multi-method method user host
+         (concat "tramp_decode_with_module () {\n"
+                 (format tramp-perl-decode-with-module tramp-remote-perl)
+                 " 2>/dev/null"
+                 "\n}"))
+        (tramp-wait-for-output))))
   ;; Find ln(1)
   (erase-buffer)
   (let ((ln (tramp-find-executable multi-method method user host
@@ -6417,6 +6520,26 @@ If `tramp-discard-garbage' is nil, just erase buffer."
          (t (error "Tenth char `%c' must be one of `xtT-'"
                    other-execute-or-sticky)))))))
 
+(defun tramp-convert-file-attributes (multi-method method user host attr)
+  "Convert file-attributes ATTR generated by perl script or ls.
+Convert file mode bits to string and set virtual device number.
+Return ATTR."
+  (unless (stringp (nth 8 attr))
+    ;; Convert file mode bits to string.
+    (setcar (nthcdr 8 attr) (tramp-file-mode-from-int (nth 8 attr))))
+  ;; Set virtual device number.
+  (setcar (nthcdr 11 attr)
+          (tramp-get-device multi-method method user host))
+  attr)
+
+(defun tramp-get-device (multi-method method user host)
+  "Returns the virtual device number.
+If it doesn't exist, generate a new one."
+  (let ((string (tramp-make-tramp-file-name multi-method method user host "")))
+    (unless (assoc string tramp-devices)
+      (add-to-list 'tramp-devices
+                   (list string (length tramp-devices))))
+    (list -1 (nth 1 (assoc string tramp-devices)))))
 
 (defun tramp-file-mode-from-int (mode)
   "Turn an integer representing a file mode into an ls(1)-like string."