XEmacs [SEP] license
XEmacs
XEmacs is a graphical- and console-based text editor which runs on almost any Unix-like operating system as well as Microsoft Windows. XEmacs is a fork, based on a version of GNU Emacs from the late 1980s. Any user can download, use, and modify XEmacs as free software available under the GNU General Public License version 2 or any later version.
History.
Between 1987 and 1993 significant delays occurred in bringing out a new version of GNU Emacs (presumed to be version 19).
disagreements involves different views of copyright assignment. The FSF sees copyright assignment to the FSF as necessary to allow it to defend the code against GPL violations,
while the XEmacs developers have argued that the lack of copyright assignment has allowed major companies to get involved, as sometimes companies can license their code but due to a cautious attitude concerning fiduciary duties to shareholders, companies may have trouble in getting permission to assign away code completely.
The Free Software Foundation holds copyright of much of the XEmacs code because of prior copyright assignment