The browse-url-browser-function (in browse-url.el) setting via customize
menu is broken (XEmacs 21.1.14 with newest packages, including from
pre-releases).
Clicking the [Value Menu] gives:
Symbol's function definition is void: nil
A q'n'd fix is to revert this patch:
http://cvs.xemacs.org/viewcvs.cgi/XEmacs/packages/xemacs-packages/mail-li...
I'll be switching to 21.4.6 soon, will try with it too.
--
Ville Skyttä
ville.skytta(a)xemacs.org