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Climacs, a new Common Lisp implementation of Emacs
Robert Strandh has just set up a new project at Common-Lisp.net: Climacs, "A modern Common Lisp implementation of the Emacs text editor".
I have been hearing about having an Emacs-like editor written in Common Lisp, so that Common Lisp itself could be used as an extension language more powerful than Emacs Lisp, since the early 1990s. The idea might remind some old-timers of LispOS projects. But in the last few years, some working code for a CL-Emacs has actually been written (here is a summary).
Robert's project has the purpose of replacing "[...] the buffer protocols of Goatee (the editor of McCLIM) and Portable Hemlock, in an attempt to ultimately merge those two projects." The message he sent for applying for Common-Lisp.net hosting explains the differences between his and other CL-Emacs projects. The flexichains data structure is described in this paper.
The simple instructions in the Climacs sources explain how to run the program, which right now only provides basic editing functionality in the largest pane (be sure to use Emacs-style keybindings). The bottom pane, which does not work like ordinary CLIM interactor panes, is for processing the few available non-editing commands, and you can think of it as the equivalent of the Emacs minibuffer:
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