Some minor Tramp fixes

* lisp/net/tramp-cmds.el (tramp-list-tramp-buffers)
(tramp-list-remote-buffers): Add ;;;###tramp-autoload cookie.

* lisp/net/tramp-fuse.el (tramp-fuse-remove-hidden-files): New defvar.
(tramp-fuse-remove-hidden-files): Use it.

* lisp/net/tramp-gvfs.el (tramp-gvfs-handler-askquestion):
Keep regression tests running.

lisp/net/tramp-cmds.el

@@ -51,6 +51,7 @@ SYNTAX can be one of the symbols `default' (default),
   (when syntax
     (customize-set-variable 'tramp-syntax syntax)))
 
+;;;###tramp-autoload
 (defun tramp-list-tramp-buffers ()
   "Return a list of all Tramp connection buffers."
   (append
@@ -61,6 +62,7 @@ SYNTAX can be one of the symbols `default' (default),
    (all-completions
     "*trace tramp" (mapcar #'list (mapcar #'buffer-name (buffer-list))))))
 
+;;;###tramp-autoload
 (defun tramp-list-remote-buffers ()
   "Return a list of all buffers with remote `default-directory'."
   (delq

lisp/net/tramp-fuse.el

@@ -44,11 +44,16 @@
     (delete-file (tramp-fuse-local-file-name filename) trash)
     (tramp-flush-file-properties v localname)))
 
+(defvar tramp-fuse-remove-hidden-files nil
+  "Remove hidden files from directory listings.")
+
 (defsubst tramp-fuse-remove-hidden-files (files)
   "Remove hidden files from FILES."
-  (cl-remove-if
-   (lambda (x) (and (stringp x) (string-match-p "\\.fuse_hidden" x)))
-   files))
+  (if tramp-fuse-remove-hidden-files
+      (cl-remove-if
+       (lambda (x) (and (stringp x) (string-match-p "\\.fuse_hidden" x)))
+       files)
+    files))
 
 (defun tramp-fuse-handle-directory-files
     (directory &optional full match nosort count)

lisp/net/tramp-gvfs.el

@@ -1774,22 +1774,26 @@ a downcased host name only."
 		  (list
 		   t ;; handled.
 		   nil ;; no abort of D-Bus.
-		   (with-tramp-connection-property (tramp-get-process v) message
-		     ;; In theory, there can be several choices.
-		     ;; Until now, there is only the question whether
-		     ;; to accept an unknown host signature or certificate.
-		     (with-temp-buffer
-		       ;; Preserve message for `progress-reporter'.
-		       (with-temp-message ""
-			 (insert message)
-			 (goto-char (point-max))
-			 (if noninteractive
-			     (message "%s" message)
-			   (pop-to-buffer (current-buffer)))
-			 (if (yes-or-no-p
-			      (buffer-substring
-			       (line-beginning-position) (point)))
-			     0 1)))))
+		   ;; Preserve message for `progress-reporter'.
+		   (with-temp-message ""
+		     (if noninteractive
+			 ;; Keep regression tests running.
+			 (progn
+			   (message "%s" message)
+			   0)
+		       (with-tramp-connection-property (tramp-get-process v) message
+			 ;; In theory, there can be several choices.
+			 ;; Until now, there is only the question
+			 ;; whether to accept an unknown host
+			 ;; signature or certificate.
+			 (with-temp-buffer
+			   (insert message)
+			   (goto-char (point-max))
+			   (pop-to-buffer (current-buffer))
+			   (if (yes-or-no-p
+				(buffer-substring
+				 (line-beginning-position) (point)))
+			       0 1))))))
 
 		;; When QUIT is raised, we shall return this
 		;; information to D-Bus.