[armedbear-devel] Backquote bug

[Faré]

>>> so one could argue that there's no rule for `#n(…), and therefore it's
>>> not a conforming form anyways.
>>>
>> Maybe it should be an error, then, or demons should be made to fly out
>> of one's nose.
>
> I would rather have a CDR written to specify this case ;-)
>
Well, if we were to re-open standardization of backquote to handle more cases,
I would argue for defining an extensible protocol for the reader,
quasiquotation, and pretty-printer, which would allow backquote and commas
to work in arbitrary data structures, rather than merely lists and arrays:
by associating with each reader macro a constructor (vector for #(),
some make-foo for #S(foo ...), etc.), said constructor can be called
either at read-time, macro-expansion time, runtime, etc., depending
on the quasiquotation status, and then unquote can be made to work fine.

—♯ƒ • François-René ÐVB Rideau •Reflection&Cybernethics• http://fare.tunes.org
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