Handle quoted tilde in Tramp

* lisp/net/tramp.el (tramp-handle-expand-file-name):
* lisp/net/tramp-gvfs.el (tramp-gvfs-handle-expand-file-name):
* lisp/net/tramp-sh.el (tramp-sh-handle-expand-file-name):
* lisp/net/tramp-smb.el (tramp-smb-handle-expand-file-name):
* lisp/net/tramp-sudoedit.el (tramp-sudoedit-handle-expand-file-name):
Handle quoted tilde.  (Bug#65685)

* test/lisp/net/tramp-tests.el (tramp-test05-expand-file-name-tilde):
New test.

lisp/net/tramp-gvfs.el

@@ -1176,10 +1176,13 @@ file names."
       (tramp-run-real-handler #'expand-file-name (list name))
     ;; Dissect NAME.
     (with-parsed-tramp-file-name name nil
+      ;; Tilde expansion shall be possible also for quoted localname.
+      (when (string-prefix-p "~" (file-name-unquote localname))
+	(setq localname (file-name-unquote localname)))
       ;; If there is a default location, expand tilde.
       (when (string-match
 	     (tramp-compat-rx bos "~" (group (* (not "/"))) (group (* nonl)) eos)
-	      localname)
+	     localname)
 	(let ((uname (match-string 1 localname))
 	      (fname (match-string 2 localname))
 	      hname)

lisp/net/tramp-sh.el

@@ -2831,6 +2831,9 @@ the result will be a local, non-Tramp, file name."
 	   (tramp-run-real-handler #'expand-file-name (list name)))
 	(unless (tramp-run-real-handler #'file-name-absolute-p (list localname))
 	  (setq localname (concat "~/" localname)))
+        ;; Tilde expansion shall be possible also for quoted localname.
+	(when (string-prefix-p "~" (file-name-unquote localname))
+	  (setq localname (file-name-unquote localname)))
 	;; Tilde expansion if necessary.  This needs a shell which
 	;; groks tilde expansion!  The function `tramp-find-shell' is
 	;; supposed to find such a shell on the remote host.  Please

lisp/net/tramp-smb.el

@@ -731,6 +731,9 @@ PRESERVE-UID-GID and PRESERVE-EXTENDED-ATTRIBUTES are completely ignored."
       (tramp-run-real-handler #'expand-file-name (list name))
     ;; Dissect NAME.
     (with-parsed-tramp-file-name name nil
+      ;; Tilde expansion shall be possible also for quoted localname.
+      (when (string-prefix-p "~" (file-name-unquote localname))
+	(setq localname (file-name-unquote localname)))
       ;; Tilde expansion if necessary.
       (when (string-match
 	     (tramp-compat-rx bos "~" (group (* (not "/"))) (group (* nonl)) eos)

lisp/net/tramp-sudoedit.el

@@ -380,6 +380,9 @@ the result will be a local, non-Tramp, file name."
       ;; but to the root home directory.
       (when (tramp-string-empty-or-nil-p localname)
 	(setq localname "~"))
+      ;; Tilde expansion shall be possible also for quoted localname.
+      (when (string-prefix-p "~" (file-name-unquote localname))
+	(setq localname (file-name-unquote localname)))
       (unless (file-name-absolute-p localname)
 	(setq localname (format "~%s/%s" user localname)))
       (when (string-match

lisp/net/tramp.el

@@ -3982,6 +3982,9 @@ Let-bind it when necessary.")
     (with-parsed-tramp-file-name name nil
       (unless (tramp-run-real-handler #'file-name-absolute-p (list localname))
 	(setq localname (concat "/" localname)))
+      ;; Tilde expansion shall be possible also for quoted localname.
+      (when (string-prefix-p "~" (file-name-unquote localname))
+	(setq localname (file-name-unquote localname)))
       ;; Expand tilde.  Usually, the methods applying this handler do
       ;; not support tilde expansion.  But users could declare a
       ;; respective connection property.  (Bug#53847)

test/lisp/net/tramp-tests.el

@@ -2335,6 +2335,17 @@ Also see `ignore'."
       (should (string-equal (expand-file-name local dir) dir))
       (should (string-equal (expand-file-name (concat dir local)) dir)))))
 
+;; The following test is inspired by Bug#65685.
+(ert-deftest tramp-test05-expand-file-name-tilde ()
+  "Check `expand-file-name'."
+  (skip-unless (tramp--test-enabled))
+  (skip-unless (not (tramp--test-ange-ftp-p)))
+
+  (let ((dir (file-remote-p ert-remote-temporary-file-directory))
+	(tramp-tolerate-tilde t))
+    (should (string-equal (expand-file-name (concat dir "~"))
+			  (expand-file-name (concat dir "/:~"))))))
+
 (ert-deftest tramp-test06-directory-file-name ()
   "Check `directory-file-name'.
 This checks also `file-name-as-directory', `file-name-directory',