Re: [PATCH] Marking weak alist vectors

[Kevin Ryde]

address@hidden (Ludovic Courtès) writes:
>
>     For instance, while
>     testing weakly-key alist vectors "by hand" in a REPL, it occurred to
>     me that the weak-key pair would reliably die, *unless* the hash
>     table was written (I mean using `write'):

I may have struck that or something similar a while back.  Mikael
explained it was a reference held in the print data of the output
port, or something.  Used to detect cyclic structures, or something.
I don't think I understood why such a reference ought to persist once
outside the print, I'd suspect it'd be better if it didn't, if that
could be arranged.