Variable: tramp-autoload-file-name-regexp
tramp-autoload-file-name-regexp is a variable defined in tramp.el.gz.
Value
"\\`/[^/|:]+:"
Documentation
Regular expression matching file names handled by Tramp autoload.
It must match the initial tramp-syntax settings. It should not
match file names at root of the underlying local file system,
like "/sys" or "/C:".
Source Code
;; Defined in /usr/src/emacs/lisp/net/tramp.el.gz
;;;###autoload
(defconst tramp-autoload-file-name-regexp
(concat
"\\`/"
(if (memq system-type '(cygwin windows-nt))
;; The method is either "-", or at least two characters.
"\\(-\\|[^/|:]\\{2,\\}\\)"
;; At least one character for method.
"[^/|:]+")
":")
"Regular expression matching file names handled by Tramp autoload.
It must match the initial `tramp-syntax' settings. It should not
match file names at root of the underlying local file system,
like \"/sys\" or \"/C:\".")