; Minor Tramp changes

* doc/misc/tramp.texi (Frequently Asked Questions):
google-drive has been disabled in GNOME 50.

* lisp/net/tramp-cmds.el (tramp-enable-method): Upcase prompt.

* lisp/net/tramp-sh.el (tramp-sh-handle-make-process)
(tramp-sh-handle-process-file): Improve setting of environment variables.

* test/lisp/net/tramp-tests.el (tramp-methods) <mock>:
Add `tramp-tmpdir'.  Adapt `tramp-login-program'.
(ert-remote-temporary-file-directory): Improve expansion.
(tramp-test35-remote-path): Adapt test.

doc/misc/tramp.texi

@@ -6435,6 +6435,13 @@ You can change this directory by setting the user option
 "XDG_RUNTIME_DIR")}.
 
 
+@item
+I get an error @samp{Method `gdrive' not supported by GVFS}.
+
+@samp{google-drive} has been disabled in @acronym{GNOME} 50.  It is
+not clear yet whether and when it will be reenabled.
+@c @uref{https://discourse.gnome.org/t/google-drive-in-gnome-50/34417}
+
 @item
 How to ignore errors when changing file attributes?
 

lisp/net/tramp-cmds.el

@@ -63,7 +63,7 @@ SYNTAX can be one of the symbols `default' (default),
   (interactive
    (list
     (completing-read
-     "method: "
+     "Method: "
      (tramp-compat-seq-keep
       (lambda (x)
 	(when-let* ((name (symbol-name x))

lisp/net/tramp-sh.el

@@ -3107,6 +3107,11 @@ will be used."
 		      ,(concat "PS1=" (getenv-internal "PS1" env)))))
 	     (eenv (setenv-internal eenv "INSIDE_EMACS" nil nil))
 	     (eenv (setenv-internal eenv "PS1" nil nil))
+	     vars
+	     (eenv (dolist (item (reverse eenv) vars)
+		     (setq item (split-string item "=" 'omit))
+		     (setcdr item (string-join (cdr item) "="))
+		     (push (format "%s %s" (car item) (cdr item)) vars)))
 	     (command
 	      (when (stringp program)
 		(format "cd %s && %s exec %s %s env %s %s"
@@ -3222,10 +3227,15 @@ will be used."
 			(delete-region mark (point-max))
 			(narrow-to-region (point-max) (point-max))
 			;; Send delayed environment.
-			(dolist (entry eenv)
+			(when eenv
 			  (tramp-send-command
-			   v (format
-			      "export %s" (tramp-shell-quote-argument entry))))
+			   v
+			   (format
+			    "while read var val; do export $var=\"$val\"; done <<'%s'\n%s\n%s"
+			    tramp-end-of-heredoc
+			    (string-join eenv "\n")
+			    tramp-end-of-heredoc)
+			   t))
 			;; Now do it.
 			(if command
 			    ;; Send the command.
@@ -3350,6 +3360,8 @@ will be used."
 		   env "EMACSCLIENT_TRAMP"
 		   (tramp-make-tramp-file-name v 'noloc) 'keep)))
       (setq env (setenv-internal env "INSIDE_EMACS" (tramp-inside-emacs) 'keep))
+      ;; Remove looong environment variables, for example from tramp-tests.el.
+      (setq env (seq-remove (lambda (x) (length> x 256)) env))
       (when env
 	(setq command
 	      (format

test/lisp/net/tramp-tests.el

@@ -117,9 +117,10 @@
        (t (add-to-list
            'tramp-methods
            `("mock"
-	     (tramp-login-program	,tramp-default-remote-shell)
+	     (tramp-login-program	,tramp-encoding-shell)
 	     (tramp-login-args		(("-i")))
              (tramp-direct-async	("-c"))
+             (tramp-tmpdir		,temporary-file-directory)
 	     (tramp-remote-shell	,tramp-default-remote-shell)
 	     (tramp-remote-shell-args	("-c"))
 	     (tramp-connection-timeout	10)))
@@ -225,7 +226,8 @@
       auto-revert-use-notify t
       ert-batch-backtrace-right-margin nil
       ert-remote-temporary-file-directory
-      (expand-file-name ert-remote-temporary-file-directory)
+      (let ((tramp-show-ad-hoc-proxies t) (non-essential t))
+	(expand-file-name ert-remote-temporary-file-directory))
       password-cache-expiry nil
       remote-file-name-inhibit-cache nil
       tramp-allow-unsafe-temporary-files t
@@ -6855,8 +6857,7 @@ INPUT, if non-nil, is a string sent to the process."
   "Check loooong `tramp-remote-path'."
   :tags '(:expensive-test)
   (skip-unless (tramp--test-enabled))
-  (skip-unless (tramp--test-sh-p))
-  (skip-unless (not (tramp--test-crypt-p)))
+  (skip-unless (tramp--test-supports-environment-variables-p))
 
   (let* ((tmp-name1 (tramp--test-make-temp-name))
 	 (default-directory ert-remote-temporary-file-directory)
@@ -9330,9 +9331,6 @@ If INTERACTIVE is non-nil, the tests are run interactively."
 
 ;; Use `skip-when' starting with Emacs 30.1.
 
-;; Starting with Emacs 29, use `ert-with-temp-file' and
-;; `ert-with-temp-directory'.
-
 (provide 'tramp-tests)
 
 ;;; tramp-tests.el ends here