bug#7006: Reader oddity after ?\^ --- should signal error if invalid instead of being garbage

[Lars Magne Ingebrigtsen]

Daniel Colascione <dan.colascione@gmail.com> writes:

> ?\^ is supposed to be the prefix for a control character --- for
> example, ?\^g. However, the character following the ^ can be a
> non-existent control character like ' ' or ')'. Currently, the reader
> outputs a nonsense value in this case. Instead, the reader ought to
> signal an error.

Hm, yes:

?\^9
=> 67108921

That seems awfully confusing.  

(format "%x" 67108921)
=> "4000039"

Does anybody know whether this a feature or a bug?

-- 
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  bloggy blog http://lars.ingebrigtsen.no/