Variable: tramp-initial-file-name-regexp
tramp-initial-file-name-regexp is a variable defined in tramp.el.gz.
Value
"\\`/[^/:]+:[^/:]*:"
Documentation
Value for tramp-file-name-regexp for autoload.
It must match the initial tramp-syntax settings.
Source Code
;; Defined in /usr/src/emacs/lisp/net/tramp.el.gz
;;;###autoload
(defconst tramp-initial-file-name-regexp
(rx bos "/" (+ (not (any "/:"))) ":" (* (not (any "/:"))) ":")
"Value for `tramp-file-name-regexp' for autoload.
It must match the initial `tramp-syntax' settings.")