Rory Liam
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Rory Liam
@tydes.tngl.sh
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Reposted by Rory Liam
interlisp.org
The SEdit structure editor of Medley Interlisp lets you also modify arbitrary list structures and data, not just Lisp code. In this example the ED function calls SEdit and returns the modified object.

#interlisp #lisp
Screenshot of a portion of the black and white desktop of a 1980s graphical workstation environment. The desktop has a grey background pattern and two windows with a white background and a title bar with white text on a black background. The bottom window is a Lisp REPL where the following expressions are evaluated, output printed, and values returned: 2/4_ (SETQ LIST.STRUCTURE (LIST 1 2 3 4 5)) (1 2 3 4 5) 2/5_ (ED 'LIST.STRUCTURE) Editing VARS definition of LIST.STRUCTURE. LIST.STRUCTURE 2/6_ LIST.STRUCTURE (1 2 3 (A B C) 4 5) The top window is an editor that shows a Lisp list structure modified by the above call to the ED function.
February 3, 2026 at 9:59 AM
Reposted by Rory Liam
pitrh.bsky.social
And now for the inevitable, shameless plug: The Book of PF, 4th ed nostarch.com/book-of-pf-4... has some preview of upcoming features as well as #openbsd 7.8 and #freebsd 14 #pf configs. Also see the #asiabsdcon tutorial and nxdomain.no/~peter/yes_t... @nostarchpress.bsky.social
The Book of PF, 4th Edition
Build a more secure network with PF.
nostarch.com
January 28, 2026 at 9:34 PM
Testing
January 26, 2026 at 2:05 AM