Variable: tramp-port-regexp
tramp-port-regexp is a variable defined in tramp.el.gz.
Value
"[[:digit:]]+"
Documentation
Regexp matching port numbers.
Source Code
;; Defined in /usr/src/emacs/lisp/net/tramp.el.gz
(defconst tramp-port-regexp "[[:digit:]]+"
"Regexp matching port numbers.")