11 files changed, 157 insertions, 105 deletions

diff --git a/lisp/net/dictionary.el b/lisp/net/dictionary.el
index 507363cc0f8..e0824f39716 100644
--- a/lisp/net/dictionary.el
+++ b/lisp/net/dictionary.el
@@ -1376,7 +1376,7 @@ any buffer where (dictionary-tooltip-mode 1) has been called."
     (dictionary-search word)))
 
 ;;;###autoload
-(defun context-menu-dictionary (menu click)
+(defun dictionary-context-menu (menu click)
   "Populate MENU with dictionary commands at CLICK.
 When you add this function to `context-menu-functions',
 the context menu will contain an item that searches
diff --git a/lisp/net/mailcap.el b/lisp/net/mailcap.el
index daa2d5a3fb3..b65f7c25b83 100644
--- a/lisp/net/mailcap.el
+++ b/lisp/net/mailcap.el
@@ -319,8 +319,9 @@ attribute name (viewer, test, etc).  This looks like:
 
 Where VIEWERINFO specifies how the content-type is viewed.  Can be
 a string, in which case it is run through a shell, with appropriate
-parameters, or a symbol, in which case the symbol is `funcall'ed if
-and only if it exists as a function, with the buffer as an argument.
+parameters, or a symbol, in which case the symbol must name a function
+of zero arguments which is called in a buffer holding the MIME part's
+content.
 
 TESTINFO is a test for the viewer's applicability, or nil.  If nil, it
 means the viewer is always valid.  If it is a Lisp function, it is
@@ -1175,34 +1176,45 @@ See \"~/.mailcap\", `mailcap-mime-data' and related files and variables."
   (mailcap-parse-mailcaps)
   (let ((command (mailcap-mime-info
                   (mailcap-extension-to-mime (file-name-extension file)))))
-    (unless command
-      (error "No viewer for %s" (file-name-extension file)))
-    ;; Remove quotes around the file name - we'll use shell-quote-argument.
-    (while (string-match "['\"]%s['\"]" command)
-      (setq command (replace-match "%s" t t command)))
-    (setq command (replace-regexp-in-string
-                   "%s"
-                   (shell-quote-argument (convert-standard-filename file))
-                   command
-                   nil t))
-    ;; Handlers such as "gio open" and kde-open5 start viewer in background
-    ;; and exit immediately.  Avoid `start-process' since it assumes
-    ;; :connection-type `pty' and kills children processes with SIGHUP
-    ;; when temporary terminal session is finished (Bug#44824).
-    ;; An alternative is `process-connection-type' let-bound to nil for
-    ;; `start-process-shell-command' call (with no chance to report failure).
-    (make-process
-     :name "mailcap-view-file"
-     :connection-type 'pipe
-     :buffer nil ; "*Messages*" may be suitable for debugging
-     :sentinel (lambda (proc event)
-                 (when (and (memq (process-status proc) '(exit signal))
-                            (/= (process-exit-status proc) 0))
-                   (message
-                    "Command %s: %s."
-                    (mapconcat #'identity (process-command proc) " ")
-                    (substring event 0 -1))))
-     :command (list shell-file-name shell-command-switch command))))
+    (if (functionp command)
+        ;; command is a viewer function (a mode) expecting the file
+        ;; contents to be in the current buffer.
+        (let ((buf (generate-new-buffer (file-name-nondirectory file))))
+          (set-buffer buf)
+          (insert-file-contents file)
+          (setq buffer-file-name file)
+          (funcall command)
+          (set-buffer-modified-p nil)
+          (pop-to-buffer buf))
+      ;; command is a program to run with file as an argument.
+      (unless command
+        (error "No viewer for %s" (file-name-extension file)))
+      ;; Remove quotes around the file name - we'll use shell-quote-argument.
+      (while (string-match "['\"]%s['\"]" command)
+        (setq command (replace-match "%s" t t command)))
+      (setq command (replace-regexp-in-string
+                     "%s"
+                     (shell-quote-argument (convert-standard-filename file))
+                     command
+                     nil t))
+      ;; Handlers such as "gio open" and kde-open5 start viewer in background
+      ;; and exit immediately.  Avoid `start-process' since it assumes
+      ;; :connection-type `pty' and kills children processes with SIGHUP
+      ;; when temporary terminal session is finished (Bug#44824).
+      ;; An alternative is `process-connection-type' let-bound to nil for
+      ;; `start-process-shell-command' call (with no chance to report failure).
+      (make-process
+       :name "mailcap-view-file"
+       :connection-type 'pipe
+       :buffer nil ; "*Messages*" may be suitable for debugging
+       :sentinel (lambda (proc event)
+                   (when (and (memq (process-status proc) '(exit signal))
+                              (/= (process-exit-status proc) 0))
+                     (message
+                      "Command %s: %s."
+                      (mapconcat #'identity (process-command proc) " ")
+                      (substring event 0 -1))))
+       :command (list shell-file-name shell-command-switch command)))))
 
 (provide 'mailcap)
 
diff --git a/lisp/net/shr.el b/lisp/net/shr.el
index 7363874cf3c..ff14acfda70 100644
--- a/lisp/net/shr.el
+++ b/lisp/net/shr.el
@@ -1467,7 +1467,18 @@ ones, in case fg and bg are nil."
                          (dom-attr dom 'name)))) ; Obsolete since HTML5.
       (push (cons id (point)) shr--link-targets))
     (when url
-      (shr-urlify (or shr-start start) (shr-expand-url url) title))))
+      (shr-urlify (or shr-start start) (shr-expand-url url) title)
+      ;; Check whether the URL is suspicious.
+      (when-let ((warning (or (textsec-suspicious-p
+                               (shr-expand-url url) 'url)
+                              (textsec-suspicious-p
+                               (cons (shr-expand-url url)
+                                     (buffer-substring (or shr-start start)
+                                                       (point)))
+                               'link))))
+        (add-text-properties (or shr-start start) (point)
+                             (list 'face '(shr-link textsec-suspicious)))
+        (insert (propertize "⚠️" 'help-echo warning))))))
 
 (defun shr-tag-abbr (dom)
   (let ((title (dom-attr dom 'title))
diff --git a/lisp/net/tramp-adb.el b/lisp/net/tramp-adb.el
index ed73a86ef03..75e6b7179b0 100644
--- a/lisp/net/tramp-adb.el
+++ b/lisp/net/tramp-adb.el
@@ -776,7 +776,7 @@ PRESERVE-UID-GID and PRESERVE-EXTENDED-ATTRIBUTES are completely ignored."
 (defun tramp-adb-get-signal-strings (vec)
   "Strings to return by `process-file' in case of signals."
   (with-tramp-connection-property vec "signal-strings"
-    (let ((default-directory (tramp-make-tramp-file-name vec 'localname))
+    (let ((default-directory (tramp-make-tramp-file-name vec 'noloc))
           ;; `shell-file-name' and `shell-command-switch' are needed
           ;; for Emacs < 27.1, which doesn't support connection-local
           ;; variables in `shell-command'.
@@ -815,7 +815,7 @@ PRESERVE-UID-GID and PRESERVE-EXTENDED-ATTRIBUTES are completely ignored."
       ;; Determine input.
       (if (null infile)
           (setq input (tramp-get-remote-null-device v))
-        (setq infile (expand-file-name infile))
+        (setq infile (tramp-compat-file-name-unquote (expand-file-name infile)))
         (if (tramp-equal-remote default-directory infile)
             ;; INFILE is on the same remote host.
             (setq input (tramp-file-local-name infile))
@@ -870,7 +870,8 @@ PRESERVE-UID-GID and PRESERVE-EXTENDED-ATTRIBUTES are completely ignored."
               (setq ret (tramp-adb-send-command-and-check
                          v (format
                             "(cd %s; %s)"
-                            (tramp-shell-quote-argument localname) command)
+                            (tramp-unquote-shell-quote-argument localname)
+                            command)
                          t))
             (unless (natnump ret) (setq ret 1))
             ;; We should add the output anyway.
@@ -900,8 +901,7 @@ PRESERVE-UID-GID and PRESERVE-EXTENDED-ATTRIBUTES are completely ignored."
       ;; Cleanup.  We remove all file cache values for the connection,
       ;; because the remote process could have changed them.
       (when tmpinput (delete-file tmpinput))
-
-      (unless process-file-side-effects
+      (when process-file-side-effects
         (tramp-flush-directory-properties v ""))
 
       ;; Return exit status.
diff --git a/lisp/net/tramp-archive.el b/lisp/net/tramp-archive.el
index 8a88057d38a..d3f427932f3 100644
--- a/lisp/net/tramp-archive.el
+++ b/lisp/net/tramp-archive.el
@@ -457,7 +457,7 @@ name is kept in slot `hop'"
        ((tramp-archive-file-name-p archive)
         (let ((archive
                (tramp-make-tramp-file-name
-                (tramp-archive-dissect-file-name archive) nil 'noarchive)))
+                (tramp-archive-dissect-file-name archive))))
           (setf (tramp-file-name-host vec) (tramp-archive-gvfs-host archive)))
         (puthash archive (list vec) tramp-archive-hash))
 
@@ -560,8 +560,7 @@ offered."
 
 (defun tramp-archive-gvfs-file-name (name)
   "Return NAME in GVFS syntax."
-  (tramp-make-tramp-file-name
-   (tramp-archive-dissect-file-name name) nil 'nohop))
+  (tramp-make-tramp-file-name (tramp-archive-dissect-file-name name)))
 
 
 ;; File name primitives.
diff --git a/lisp/net/tramp-cache.el b/lisp/net/tramp-cache.el
index 715b537247f..1ab8f4d335b 100644
--- a/lisp/net/tramp-cache.el
+++ b/lisp/net/tramp-cache.el
@@ -124,7 +124,7 @@ If KEY is `tramp-cache-undefined', don't create anything, and return nil."
             (dolist (elt tramp-connection-properties)
               (when (tramp-compat-string-search
                      (or (nth 0 elt) "")
-                     (tramp-make-tramp-file-name key 'noloc 'nohop))
+                     (tramp-make-tramp-file-name key 'noloc))
                 (tramp-set-connection-property key (nth 1 elt) (nth 2 elt)))))
           hash))))
 
diff --git a/lisp/net/tramp-sh.el b/lisp/net/tramp-sh.el
index 72b1ebb3e06..f0ceabe568b 100644
--- a/lisp/net/tramp-sh.el
+++ b/lisp/net/tramp-sh.el
@@ -1149,8 +1149,7 @@ component is used as the target of the symlink."
            (when (file-remote-p result)
              (setq result (tramp-compat-file-name-quote result 'top)))
            (tramp-message v 4 "True name of `%s' is `%s'" localname result)
-           result))
-       'nohop)))))
+           result)))))))
 
 ;; Basic functions.
 
@@ -2852,7 +2851,7 @@ implementation will be used."
                  ;; `shell'.  We discard hops, if existing, that's why
                  ;; we cannot use `file-remote-p'.
                  (prompt (format "PS1=%s %s"
-                                 (tramp-make-tramp-file-name v nil 'nohop)
+                                 (tramp-make-tramp-file-name v)
                                  tramp-initial-end-of-output))
                  ;; We use as environment the difference to toplevel
                  ;; `process-environment'.
@@ -3013,7 +3012,7 @@ implementation will be used."
       vec
       (concat
        "signal-strings-" (tramp-get-method-parameter vec 'tramp-remote-shell))
-    (let ((default-directory (tramp-make-tramp-file-name vec 'localname))
+    (let ((default-directory (tramp-make-tramp-file-name vec 'noloc))
           process-file-return-signal-string signals res result)
       (setq signals
             (append
@@ -3098,13 +3097,13 @@ implementation will be used."
       ;; Determine input.
       (if (null infile)
           (setq input (tramp-get-remote-null-device v))
-        (setq infile (expand-file-name infile))
+        (setq infile (tramp-compat-file-name-unquote (expand-file-name infile)))
         (if (tramp-equal-remote default-directory infile)
             ;; INFILE is on the same remote host.
             (setq input (tramp-file-local-name infile))
           ;; INFILE must be copied to remote host.
           (setq input (tramp-make-tramp-temp-file v)
-                tmpinput (tramp-make-tramp-file-name v input 'nohop))
+                tmpinput (tramp-make-tramp-file-name v input))
           (copy-file infile tmpinput t)))
       (when input (setq command (format "%s <%s" command input)))
 
@@ -3136,7 +3135,7 @@ implementation will be used."
             ;; stderr must be copied to remote host.  The temporary
             ;; file must be deleted after execution.
             (setq stderr (tramp-make-tramp-temp-file v)
-                  tmpstderr (tramp-make-tramp-file-name v stderr 'nohop))))
+                  tmpstderr (tramp-make-tramp-file-name v stderr))))
          ;; stderr to be discarded.
          ((null (cadr destination))
           (setq stderr (tramp-get-remote-null-device v)))))
@@ -3153,7 +3152,8 @@ implementation will be used."
               (setq ret (tramp-send-command-and-check
                          v (format
                             "cd %s && %s"
-                            (tramp-shell-quote-argument localname) command)
+                            (tramp-unquote-shell-quote-argument localname)
+                            command)
                          t t t))
             (unless (natnump ret) (setq ret 1))
             ;; We should add the output anyway.
@@ -3184,8 +3184,7 @@ implementation will be used."
       ;; Cleanup.  We remove all file cache values for the connection,
       ;; because the remote process could have changed them.
       (when tmpinput (delete-file tmpinput))
-
-      (unless process-file-side-effects
+      (when process-file-side-effects
         (tramp-flush-directory-properties v ""))
 
       ;; Return exit status.
@@ -3650,8 +3649,7 @@ Fall back to normal file name handler if no Tramp handler exists."
 (defun tramp-sh-file-name-handler-p (vec)
   "Whether VEC uses a method from `tramp-sh-file-name-handler'."
   (and (assoc (tramp-file-name-method vec) tramp-methods)
-       (eq (tramp-find-foreign-file-name-handler
-            (tramp-make-tramp-file-name vec nil 'nohop))
+       (eq (tramp-find-foreign-file-name-handler vec)
            'tramp-sh-file-name-handler)))
 
 ;; This must be the last entry, because `identity' always matches.
@@ -5441,7 +5439,7 @@ Nonexistent directories are removed from spec."
           (lambda (x)
             (and
              (stringp x)
-             (file-directory-p (tramp-make-tramp-file-name vec x 'nohop))
+             (file-directory-p (tramp-make-tramp-file-name vec x))
              x))
           remote-path))))))
 
diff --git a/lisp/net/tramp-smb.el b/lisp/net/tramp-smb.el
index c5f423fa3f0..6515519680c 100644
--- a/lisp/net/tramp-smb.el
+++ b/lisp/net/tramp-smb.el
@@ -1281,7 +1281,7 @@ component is used as the target of the symlink."
 
       ;; Determine input.
       (when infile
-        (setq infile (expand-file-name infile))
+        (setq infile (tramp-compat-file-name-unquote (expand-file-name infile)))
         (if (tramp-equal-remote default-directory infile)
             ;; INFILE is on the same remote host.
             (setq input (tramp-file-local-name infile))
@@ -1373,8 +1373,7 @@ component is used as the target of the symlink."
       (when tmpinput (delete-file tmpinput))
       (unless outbuf
         (kill-buffer (tramp-get-connection-property v "process-buffer" nil)))
-
-      (unless process-file-side-effects
+      (when process-file-side-effects
         (tramp-flush-directory-properties v ""))
 
       ;; Return exit status.
diff --git a/lisp/net/tramp-sshfs.el b/lisp/net/tramp-sshfs.el
index 0a5bf2f43b3..72837793de4 100644
--- a/lisp/net/tramp-sshfs.el
+++ b/lisp/net/tramp-sshfs.el
@@ -137,7 +137,7 @@
     (set-file-acl . ignore)
     (set-file-modes . tramp-sshfs-handle-set-file-modes)
     (set-file-selinux-context . ignore)
-    (set-file-times . ignore)
+    (set-file-times . tramp-sshfs-handle-set-file-times)
     (set-visited-file-modtime . tramp-handle-set-visited-file-modtime)
     (shell-command . tramp-handle-shell-command)
     (start-file-process . tramp-handle-start-file-process)
@@ -242,13 +242,28 @@ arguments to pass to the OPERATION."
     (let ((command
            (format
             "cd %s && exec %s"
-            localname
-            (mapconcat #'tramp-shell-quote-argument (cons program args) " "))))
+            (tramp-unquote-shell-quote-argument localname)
+            (mapconcat #'tramp-shell-quote-argument (cons program args) " ")))
+          input tmpinput)
+
+      ;; Determine input.
+      (if (null infile)
+          (setq input (tramp-get-remote-null-device v))
+        (setq infile (tramp-compat-file-name-unquote (expand-file-name infile)))
+        (if (tramp-equal-remote default-directory infile)
+            ;; INFILE is on the same remote host.
+            (setq input (tramp-file-local-name infile))
+          ;; INFILE must be copied to remote host.
+          (setq input (tramp-make-tramp-temp-file v)
+                tmpinput (tramp-make-tramp-file-name v input))
+          (copy-file infile tmpinput t)))
+      (when input (setq command (format "%s <%s" command input)))
+
       (unwind-protect
           (apply
            #'tramp-call-process
            v (tramp-get-method-parameter v 'tramp-login-program)
-           infile destination display
+           nil destination display
            (tramp-expand-args
             v 'tramp-login-args
             ?h (or (tramp-file-name-host v) "")
@@ -256,7 +271,11 @@ arguments to pass to the OPERATION."
             ?p (or (tramp-file-name-port v) "")
             ?l command))
 
-        (unless process-file-side-effects
+        ;; Cleanup.  We remove all file cache values for the
+        ;; connection, because the remote process could have changed
+        ;; them.
+        (when tmpinput (delete-file tmpinput))
+        (when process-file-side-effects
           (tramp-flush-directory-properties v ""))))))
 
 (defun tramp-sshfs-handle-rename-file
@@ -285,6 +304,15 @@ arguments to pass to the OPERATION."
       (tramp-compat-set-file-modes
        (tramp-fuse-local-file-name filename) mode flag))))
 
+(defun tramp-sshfs-handle-set-file-times (filename &optional timestamp flag)
+  "Like `set-file-times' for Tramp files."
+  (or (file-exists-p filename) (write-region "" nil filename nil 0))
+  (with-parsed-tramp-file-name filename nil
+    (unless (and (eq flag 'nofollow) (file-symlink-p filename))
+      (tramp-flush-file-properties v localname)
+      (tramp-compat-set-file-times
+       (tramp-fuse-local-file-name filename) timestamp flag))))
+
 (defun tramp-sshfs-handle-write-region
   (start end filename &optional append visit lockname mustbenew)
   "Like `write-region' for Tramp files."
diff --git a/lisp/net/tramp-sudoedit.el b/lisp/net/tramp-sudoedit.el
index a68d4b3e365..7fbe5412709 100644
--- a/lisp/net/tramp-sudoedit.el
+++ b/lisp/net/tramp-sudoedit.el
@@ -572,8 +572,7 @@ the result will be a local, non-Tramp, file name."
            (when (file-remote-p result)
              (setq result (tramp-compat-file-name-quote result 'top)))
            (tramp-message v 4 "True name of `%s' is `%s'" localname result)
-           result))
-       'nohop)))))
+           result)))))))
 
 (defun tramp-sudoedit-handle-file-writable-p (filename)
   "Like `file-writable-p' for Tramp files."
diff --git a/lisp/net/tramp.el b/lisp/net/tramp.el
index 7d6157ed8c2..b258121549d 100644
--- a/lisp/net/tramp.el
+++ b/lisp/net/tramp.el
@@ -1713,13 +1713,10 @@ See `tramp-dissect-file-name' for details."
   "Construct a Tramp file name from ARGS.
 
 ARGS could have two different signatures.  The first one is of
-type (VEC &optional LOCALNAME HOP).
+type (VEC &optional LOCALNAME).
 If LOCALNAME is nil, the value in VEC is used.  If it is a
 symbol, a null localname will be used.  Otherwise, LOCALNAME is
 expected to be a string, which will be used.
-If HOP is nil, the value in VEC is used.  If it is a symbol, a
-null hop will be used.  Otherwise, HOP is expected to be a
-string, which will be used.
 
 The other signature exists for backward compatibility.  It has
 the form (METHOD USER DOMAIN HOST PORT LOCALNAME &optional HOP)."
@@ -1735,8 +1732,13 @@ the form (METHOD USER DOMAIN HOST PORT LOCALNAME &optional HOP)."
             hop (tramp-file-name-hop (car args)))
       (when (cadr args)
         (setq localname (and (stringp (cadr args)) (cadr args))))
-      (when (cl-caddr args)
-        (setq hop (and (stringp (cl-caddr args)) (cl-caddr args)))))
+      (when hop
+        (setq hop nil)
+        ;; Assure that the hops are in `tramp-default-proxies-alist'.
+        ;; In tramp-archive.el, the slot `hop' is used for the archive
+        ;; file name.
+        (unless (string-equal method "archive")
+          (tramp-add-hops (car args)))))
 
      (t (setq method (nth 0 args)
               user (nth 1 args)
@@ -1769,15 +1771,17 @@ the form (METHOD USER DOMAIN HOST PORT LOCALNAME &optional HOP)."
             localname)))
 
 (set-advertised-calling-convention
- #'tramp-make-tramp-file-name '(vec &optional localname hop) "27.1")
+ #'tramp-make-tramp-file-name '(vec &optional localname) "29.1")
 
 (defun tramp-make-tramp-hop-name (vec)
   "Construct a Tramp hop name from VEC."
-  (replace-regexp-in-string
-   tramp-prefix-regexp ""
+  (concat
+   (tramp-file-name-hop vec)
    (replace-regexp-in-string
-    (concat tramp-postfix-host-regexp "$") tramp-postfix-hop-format
-    (tramp-make-tramp-file-name vec 'noloc))))
+    tramp-prefix-regexp ""
+    (replace-regexp-in-string
+     (concat tramp-postfix-host-regexp "$") tramp-postfix-hop-format
+     (tramp-make-tramp-file-name vec 'noloc)))))
 
 (defun tramp-completion-make-tramp-file-name (method user host localname)
   "Construct a Tramp file name from METHOD, USER, HOST and LOCALNAME.
@@ -1811,7 +1815,7 @@ Unless DONT-CREATE, the buffer is created when it doesn't exist yet."
            (tramp-get-connection-property vec "process-buffer" nil))
           (setq buffer-undo-list t
                 default-directory
-                (tramp-make-tramp-file-name vec 'noloc 'nohop))
+                (tramp-make-tramp-file-name vec 'noloc))
           (current-buffer)))))
 
 (defun tramp-get-connection-buffer (vec &optional dont-create)
@@ -1926,7 +1930,7 @@ The outline level is equal to the verbosity of the Tramp message."
   "A predicate for Tramp interactive commands.
 They are completed by \"M-x TAB\" only in Tramp debug buffers."
   (with-current-buffer buffer
-    (string-equal (buffer-substring 1 10) ";; Emacs:")))
+    (string-equal (buffer-substring 1 (min 10 (point-max))) ";; Emacs:")))
 
 (put #'tramp-debug-buffer-command-completion-p 'tramp-suppress-trace t)
 
@@ -2596,11 +2600,10 @@ Must be handled by the callers."
    ;; Unknown file primitive.
    (t (error "Unknown file I/O primitive: %s" operation))))
 
-(defun tramp-find-foreign-file-name-handler (filename &optional _operation)
+(defun tramp-find-foreign-file-name-handler (vec &optional _operation)
   "Return foreign file name handler if exists."
-  (when (tramp-tramp-file-p filename)
+  (when (tramp-file-name-p vec)
     (let ((handler tramp-foreign-file-name-handler-alist)
-          (vec (tramp-dissect-file-name filename))
           elt func res)
       (while handler
         (setq elt (car handler)
@@ -2633,7 +2636,7 @@ Fall back to normal file name handler if no Tramp file name handler exists."
           (with-parsed-tramp-file-name filename nil
             (let ((current-connection tramp-current-connection)
                   (foreign
-                   (tramp-find-foreign-file-name-handler filename operation))
+                   (tramp-find-foreign-file-name-handler v operation))
                   (signal-hook-function #'tramp-signal-hook-function)
                   result)
               ;; Set `tramp-current-connection'.
@@ -3351,7 +3354,7 @@ User is always nil."
          (tramp-compat-funcall 'directory-abbrev-make-regexp home-dir) filename)
         (tramp-make-tramp-file-name
          vec (concat "~" (substring filename (match-beginning 1))))
-      filename)))
+      (tramp-make-tramp-file-name (tramp-dissect-file-name filename)))))
 
 (defun tramp-handle-access-file (filename string)
   "Like `access-file' for Tramp files."
@@ -3678,8 +3681,8 @@ User is always nil."
   ;; We do not want traces in the debug buffer.
   (let ((tramp-verbose (min tramp-verbose 3)))
     (when (tramp-tramp-file-p filename)
-      (let* ((v (tramp-dissect-file-name filename))
-             (p (tramp-get-connection-process v))
+      (let* ((o (tramp-dissect-file-name filename))
+             (p (tramp-get-connection-process o))
              (c (and (process-live-p p)
                      (tramp-get-connection-property p "connected" nil))))
         ;; We expand the file name only, if there is already a connection.
@@ -3693,7 +3696,8 @@ User is always nil."
                 ((eq identification 'user) (tramp-file-name-user-domain v))
                 ((eq identification 'host) (tramp-file-name-host-port v))
                 ((eq identification 'localname) localname)
-                ((eq identification 'hop) hop)
+                ;; Hop exists only in original dissected file name.
+                ((eq identification 'hop) (tramp-file-name-hop o))
                 (t (tramp-make-tramp-file-name v 'noloc)))))))))
 
 (defun tramp-handle-file-selinux-context (_filename)
@@ -3744,8 +3748,7 @@ User is always nil."
                              (expand-file-name
                               symlink-target
                               (file-name-directory v2-localname))))
-                        v2-localname)
-                      'nohop)))
+                        v2-localname))))
              (when (>= numchase numchase-limit)
                (tramp-error
                 v1 'file-error
@@ -3904,8 +3907,7 @@ User is always nil."
                             (cond
                              ((stringp remote-copy)
                               (file-local-copy
-                               (tramp-make-tramp-file-name
-                                v remote-copy 'nohop)))
+                               (tramp-make-tramp-file-name v remote-copy)))
                              ((stringp tramp-temp-buffer-file-name)
                               (copy-file
                                filename tramp-temp-buffer-file-name 'ok)
@@ -3948,7 +3950,7 @@ User is always nil."
                    (or remote-copy (null tramp-temp-buffer-file-name)))
           (delete-file local-copy))
         (when (stringp remote-copy)
-          (delete-file (tramp-make-tramp-file-name v remote-copy 'nohop))))
+          (delete-file (tramp-make-tramp-file-name v remote-copy))))
 
       ;; Result.
       (cons filename (cdr result)))))
@@ -4088,15 +4090,10 @@ Do not set it manually, it is used buffer-local in `tramp-get-lock-pid'.")
   (and (tramp-sh-file-name-handler-p vec)
        (not (tramp-get-method-parameter vec 'tramp-copy-program))))
 
-(defun tramp-compute-multi-hops (vec)
-  "Expands VEC according to `tramp-default-proxies-alist'."
-  (let ((saved-tdpa tramp-default-proxies-alist)
-        (target-alist `(,vec))
-        (hops (or (tramp-file-name-hop vec) ""))
-        (item vec)
-        choices proxy)
-
-    ;; Ad-hoc proxy definitions.
+(defun tramp-add-hops (vec)
+  "Add ad-hoc proxy definitions to `tramp-default-proxies-alist'."
+  (when-let ((hops (tramp-file-name-hop vec))
+             (item vec))
     (dolist (proxy (reverse (split-string hops tramp-postfix-hop-regexp 'omit)))
       (let* ((host-port (tramp-file-name-host-port item))
              (user-domain (tramp-file-name-user-domain item))
@@ -4113,9 +4110,19 @@ Do not set it manually, it is used buffer-local in `tramp-get-lock-pid'.")
         (add-to-list 'tramp-default-proxies-alist entry)
         (setq item (tramp-dissect-file-name proxy))))
     ;; Save the new value.
-    (when (and hops tramp-save-ad-hoc-proxies)
+    (when tramp-save-ad-hoc-proxies
       (customize-save-variable
-       'tramp-default-proxies-alist tramp-default-proxies-alist))
+       'tramp-default-proxies-alist tramp-default-proxies-alist))))
+
+(defun tramp-compute-multi-hops (vec)
+  "Expands VEC according to `tramp-default-proxies-alist'."
+  (let ((saved-tdpa tramp-default-proxies-alist)
+        (target-alist `(,vec))
+        (item vec)
+        choices proxy)
+
+    ;; Ad-hoc proxy definitions.
+    (tramp-add-hops vec)
 
     ;; Look for proxy hosts to be passed.
     (setq choices tramp-default-proxies-alist)
@@ -5462,8 +5469,7 @@ This handles also chrooted environments, which are not regarded as local."
      (null tramp-crypt-enabled)
      ;; The local temp directory must be writable for the other user.
      (file-writable-p
-      (tramp-make-tramp-file-name
-       vec tramp-compat-temporary-file-directory 'nohop))
+      (tramp-make-tramp-file-name vec tramp-compat-temporary-file-directory))
      ;; On some systems, chown runs only for root.
      (or (zerop (user-uid))
          (zerop (tramp-get-remote-uid vec 'integer))))))
@@ -5712,7 +5718,7 @@ Invokes `password-read' if available, `read-passwd' else."
                ;; multi-hop.
                (tramp-get-connection-property
                 proc "password-vector" (process-get proc 'vector))
-               'noloc 'nohop))
+               'noloc))
          (pw-prompt
           (or prompt
               (with-current-buffer (process-buffer proc)
@@ -5789,7 +5795,7 @@ Invokes `password-read' if available, `read-passwd' else."
     (auth-source-forget
      `(:max 1 ,(and user-domain :user) ,user-domain
        :host ,host-port :port ,method))
-    (password-cache-remove (tramp-make-tramp-file-name vec 'noloc 'nohop))))
+    (password-cache-remove (tramp-make-tramp-file-name vec 'noloc))))
 
 (put #'tramp-clear-passwd 'tramp-suppress-trace t)