Variable: tramp-prefix-regexp
tramp-prefix-regexp is a variable defined in tramp.el.gz.
Value
"^/"
Documentation
Regexp matching the very beginning of Tramp file names.
Should always start with "^". Derived from tramp-prefix-format.
Source Code
;; Defined in /usr/src/emacs/lisp/net/tramp.el.gz
(defvar tramp-prefix-regexp nil ; Initialized when defining `tramp-syntax'!
"Regexp matching the very beginning of Tramp file names.
Should always start with \"^\". Derived from `tramp-prefix-format'.")