[EMAIL PROTECTED] (Ludovic Courtès) writes:
>
>   guile> (define x 'a-symbol)
>   guile> (set-source-properties! x '((a . 2)))
>   ((a . 2))
>   guile> (source-properties x)
>   ((a . 2))

A symbol used in two places is the same object, so file/line attached
by both occurrances will overwrite, or whatever.  Ditto other uniques
like keywords, and immediates like fixnums and chars.


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