REPOSITORY: https://github.com/lawlist/buffer-menu
CLONE REPO: git clone https://github.com/lawlist/buffer-menu.git
The porting of the Xemacs buffer-menu features to Emacs 26 resulted in the creation of a library consisting of 600+ lines of code. Approximately 99.9 percent of the code is straight from Xemacs, with a few modifications by @lawlist where particular Lisp functions did not exist or they are somewhat different in Emacs 26. The general format for creating a menu in Emacs 26 is a little different than in Xemacs. Installation instructions are contained in the repository. Here are some screenshots:
https://www.lawlist.com/images/buffer_menu_a.png
https://www.lawlist.com/images/buffer_menu_b.png
