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
(browse-url--find-executable '("icecat" "iceweasel") "firefox")
"The name by which to invoke Firefox or a variant of it."
:type 'string)