Собственно, сабж. Напоминаю что это такое:
GNU Zile is a text editor development kit, so that you can (relatively) quickly develop your own ideal text editor without reinventing the wheel for many of the common algorithms and data-structures needed to do so.
 It comes with an example implementation of a lightweight Emacs clone, called Zemacs. ... More editors implemented over the Zile frameworks are forthcoming as the data-structures and interfaces improve: Zz an emacs inspired editor using Lua as an extension language; Zee a minimalist non-modal editor; Zi a lightweight vi clone; and more...
Zile is a collection of algorithms and data-structures that currently support all basic Emacs-like editing features: it is 8-bit clean (though Unicode support is not ready yet), and the number of editing buffers and windows is only limited by available memoryand screen space respectively. Registers, minibuffer completion and auto fill are available.
Zemacs implements a subset of Emacs with identical function and variable names, continuing the spirit of the earlier Zile editor implemented in C.
Changelog:
* Noteworthy changes in release 2.6.2 (2021-05-04) [stable]
** Bug fixes
Fix bug #60519, introduced in 2.6.0, where visiting a file that contained
no line endings would cause a null pointer dereference.
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