From: Eli Zaretskii <eliz@gnu.org>
To: Jonathan Ganc <jonpublic2@gmail.com>
Cc: 8807@debbugs.gnu.org
Subject: bug#8807: map-char-table alters cons cells used as events
Date: Mon, 06 Jun 2011 02:57:40 -0400 [thread overview]
Message-ID: <E1QTTkq-0002sA-Lq@fencepost.gnu.org> (raw)
In-Reply-To: <4DEC5C8B.3030803@gmail.com> (message from Jonathan Ganc on Sun, 05 Jun 2011 23:50:19 -0500)
> Date: Sun, 05 Jun 2011 23:50:19 -0500
> From: Jonathan Ganc <jonpublic2@gmail.com>
>
> (let ((ct (make-char-table 'keymap)) permev)
> (set-char-table-range ct '(1 . 2) 'binding)
> (map-char-table
> (lambda (event defn)
> (setq permev event)
> (insert (prin1-to-string permev)))
> ct)
> (insert (concat "\n" (prin1-to-string permev)))
> )
>
> This produces:
> (1 . 2)
> (3 . 4194303)
> , so that map-char-table alters the cons cell being used as an output
> range than producing a new one.
The char-table produced by make-char-table is originally comprised of
a single range of characters with a single value of nil. After the
call to set-char-table-range, that range is split in 2: character
codes 1 and 2 get the value of 'binding, the rest are left with nil.
Thus, map-char-table calls its 2nd argument twice, one each for every
range of characters in the table that share the same value.
> I would have expected:
> (1 . 2)
> (1 . 2)
??? Why? And where do you see that map-char-table alters the cons
cell being used as output? What output?
next prev parent reply other threads:[~2011-06-06 6:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-06 4:50 bug#8807: map-char-table alters cons cells used as events Jonathan Ganc
2011-06-06 6:57 ` Eli Zaretskii [this message]
2011-06-06 7:04 ` Kenichi Handa
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