Restore tramp-achive's Emacs 26 compatibility

* lisp/net/tramp-archive.el (tramp-archive-autoload-file-name-regexp):
Special handling of Emacs 26.  Simplify the other part.

* test/lisp/net/tramp-tests.el (tramp-test48-unload): Special case
of `tramp-register-archive-file-name-handler'.

1 files changed, 3 insertions, 0 deletions

diff --git a/test/lisp/net/tramp-tests.el b/test/lisp/net/tramp-tests.el
index a5bae46a583..a79c47be723 100644
--- a/test/lisp/net/tramp-tests.el
+++ b/test/lisp/net/tramp-tests.el
@@ -7630,6 +7630,9 @@ Since it unloads Tramp, it shall be the last test to run."
           (string-prefix-p "tramp" (symbol-name x))
           ;; `tramp-completion-mode' is autoloaded in Emacs < 28.1.
           (not (eq 'tramp-completion-mode x))
+          ;; `tramp-register-archive-file-name-handler' is autoloaded
+          ;; in Emacs < 29.1.
+          (not (eq 'tramp-register-archive-file-name-handler x))
           (not (string-match-p
                 (rx bol "tramp" (? "-archive") (** 1 2 "-") "test")
                 (symbol-name x)))