Variable: ffap-url-regexp
ffap-url-regexp is a variable defined in ffap.el.gz.
Value
"\\(news\\(post\\)?:\\|mailto:\\|file:\\|\\(ftp\\|https?\\|telnet\\|gopher\\|gemini\\|www\\|wais\\)://\\)"
Documentation
Regexp matching the beginning of a URI, for ffap.
If the value is nil, disable URL-matching features in ffap.
Source Code
;; Defined in /usr/src/emacs/lisp/ffap.el.gz
(defvar ffap-url-regexp
(eval-when-compile
(concat
"\\("
"news\\(post\\)?:\\|mailto:\\|file:" ; no host ok
"\\|"
"\\(ftp\\|https?\\|telnet\\|gopher\\|gemini\\|www\\|wais\\)://" ;Needs host
"\\)"))
"Regexp matching the beginning of a URI, for ffap.
If the value is nil, disable URL-matching features in ffap.")