Re: Appending lists

[Emanuel Berg]

tomas wrote:

> (setq lst '(a b c d dacapo))
> => (a b c d dacapo)
>
> (cddddr lst)
> => (dacapo) ;;; OK, it's the last one.
>
> (setcdr (cddddr lst) lst)) ;;; make circular list [1]
> => (a b c d dacapo a b c d dacapo a . #5) ;;; uh, whatever (see below [2])
>
> lst
> => (a b c d dacapo a b c d dacapo a . #5) ;;; (see below [2])
>
> (setq otherlst (copy-tree lst)) ;;; TIGHTEN YOUR GOGGLES!
> => ... ;;; [3]
>
> As I said above: you (most probably) can get your Emacs back
> with C-g.

Ha ha, how do you come up with these things?

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