ffap-alist

ffap-alist is a variable defined in `ffap.el'.
Its value is shown below.

• This variable may be risky if used as a file-local variable.

Documentation:
Alist of (KEY . FUNCTION) pairs parsed by `ffap-file-at-point'.
If string NAME at point (maybe "") is not a file or URL, these pairs
specify actions to try creating such a string. A pair matches if either
KEY is a symbol, and it equals `major-mode', or
KEY is a string, it should match NAME as a regexp.
On a match, (FUNCTION NAME) is called and should return a file, an
URL, or nil. If nil, search the alist for further matches.

Value:

((inferior-python-mode . python-ffap-module-path)
 (python-mode . python-ffap-module-path)
 ("" . ffap-completable)
 ("\\.info\\'" . ffap-info)
 ("\\`info/" . ffap-info-2)
 ("\\`[-[:lower:]]+\\'" . ffap-info-3)
 ("\\.elc?\\'" . ffap-el)
 (emacs-lisp-mode . ffap-el-mode)
 (finder-mode . ffap-el-mode)
 (help-mode . ffap-el-mode)
 (c++-mode . ffap-c++-mode)
 (cc-mode . ffap-c-mode)
 ("\\.\\([chCH]\\|cc\\|hh\\)\\'" . ffap-c-mode)
 (fortran-mode . ffap-fortran-mode)
 ("\\.[fF]\\'" . ffap-fortran-mode)
 (tex-mode . ffap-tex-mode)
 (latex-mode . ffap-latex-mode)
 ("\\.\\(tex\\|sty\\|doc\\|cls\\)\\'" . ffap-tex)
 ("\\.bib\\'" . ffap-bib)
 ("\\`\\." . ffap-home)
 ("\\`~/" . ffap-lcd)
 ("\\`[Rr][Ff][Cc][-#]?\\([0-9]+\\)" . ffap-rfc)
 (dired-mode . ffap-dired))