I submitted a <b>Patch</b> for tabbar-mode.
tabbar-mode.el loads (requires) fine, but when I invoke
the tabbar-mode() defun (i.e., go into tabbar minor
mode) on MS Windows 98, it crashes Emacs :(
Note that more recent versions of Windows (2000, XP)
Also, fwiw, the tabs do not show up in Cygwin Emacs,
but at least it does not cause problems.
My system was (fsf/gnu) Emacs v21.3 and tabbar v1.3 on
Windows 98. I assume that this affects w95, too.
Here is the patch, again:
(string-match "windows95" system-configuration)
(string-match "windows98" system-configuration))
(message "Tabbar does not support MS Windows 95 nor
;;else continue with defun
(defun tabbar-mode ... )