Variable: browse-url-firefox-program
browse-url-firefox-program is a customizable variable defined in
browse-url.el.gz.
Value
"firefox"
Documentation
The name by which to invoke Firefox or a variant of it.
Source Code
;; Defined in /usr/src/emacs/lisp/net/browse-url.el.gz
(defcustom browse-url-firefox-program
(let ((candidates '("icecat" "iceweasel" "firefox")))
(while (and candidates (not (executable-find (car candidates))))
(setq candidates (cdr candidates)))
(or (car candidates) "firefox"))
"The name by which to invoke Firefox or a variant of it."
:type 'string)