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From: MON KEY <monkey@sandpframing.com>
To: 7006@debbugs.gnu.org
Subject: bug#7006: Reader oddity after ?\^ --- should signal error if invalid instead of being garbage
Date: Thu, 9 Sep 2010 22:51:32 -0400	[thread overview]
Message-ID: <AANLkTi=wKrTdY8cmx4AVW=3z8uWUZk59o=O=wE5=Shzz@mail.gmail.com> (raw)
In-Reply-To: <AANLkTi=5FKPxGh3-5S2WzYKZeZNoP=Gv2ZD-+FCRr6A1@mail.gmail.com>

,----
| Currently, the reader outputs a nonsense value in this case.
| Instead, the reader ought to signal an error.
`----

Not entirely nonsensical.

 (let ((^5 (get-buffer-create "#^")))
   (with-current-buffer (get-buffer ^5)
     (save-excursion
       (erase-buffer)
       (princ "#@4    ?\\^5" (current-buffer))))
   (unwind-protect
       (char-to-string
        (- (read (get-buffer ^5)) (expt 2 26)))
     (with-current-buffer (get-buffer ^5)
       (kill-buffer (current-buffer)))))
 ;=> "5"

:NOTE :bit 27 :byte 4 :2^ 26 :bit-weight 67108864
      :bit-oct #o400000000   :bit-hex #x4000000

--
/s_P\





  reply	other threads:[~2010-09-10  2:51 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-09 21:25 bug#7006: Reader oddity after ?\^ --- should signal error if invalid instead of being garbage Daniel Colascione
2010-09-10  2:51 ` MON KEY [this message]
2011-07-14 13:57 ` Lars Magne Ingebrigtsen
2011-07-14 14:50   ` Andreas Schwab
2011-07-17  2:16   ` Stefan Monnier

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