Possibly a clone of Emacs, written in Forth.

Limitations

• Only runs in lbForth.
• It's a block editor, i.e. it's fixed to 16 lines by 64 characters.

Installation

• Either load it into a running Forth (which the fmacs.sh script does),
• Or build a standalone executable with make.

Key bindings

• M-: - Evaluate a Forth expression.
• M-x - Execute extended command.
• C-f, C-b, C-p, C-n - Cursor movement.
• M-f, M-b - Move forward/backward by word.
• C-a, C-e - Go to beginning/end of line.
• M-<, M-> - Go to beginning/end of buffer.
• C-d, DEL - Delete character to the right/left.
• M-w - Copy region to kill ring.
• M-d, M-DEL - Delete word and copy to kill ring.
• C-y - Insert text from kill ring.
• C-j, C-m - Stub; does not break line.
• C-x C-f - Stub; does not load file.
• C-h - Stub; provide a helpful message.
• C-x u, C-_ - Stub; does not undo.
• C-q - Quoted insert.
• C-g - Quit.
• C-@, C-SPC - Set mark.
• C-x C-x - Exchange point and mark.
• C-z - Return to Forth. Type fmacs to get back to Fmacs.
• C-x C-c - Exit Forth.