* Re: bug#5082: 23.1.50; print-circle and make-hash-table
[not found] <mailman.11874.1259601628.2239.bug-gnu-emacs@gnu.org>
@ 2009-12-02 22:19 ` Ted Zlatanov
2009-12-03 3:12 ` Glenn Morris
2009-12-02 22:19 ` Ted Zlatanov
1 sibling, 1 reply; 5+ messages in thread
From: Ted Zlatanov @ 2009-12-02 22:19 UTC (permalink / raw
Cc: Emacs Development
The following message is a courtesy copy of an article
that has been posted to gnu.emacs.bug as well.
On Tue, 1 Dec 2009 00:09:30 +0900 川幡太一 <kawabata.taichi@gmail.com> wrote:
> Dear Emacs Developers,
> I've found an Emacs behavior that seems a bug concerning to `print-circle'
> and make-hash-table, so I would like to report it.
> By setting `print-circle' to `t', printing Lisp Object with recursive
> or repetitive
> list should be displayed as #N= and #N# syntax.
> However, it seems this is not true when printing lisp objects within
> hash tables
> (which become possible in Emacs 23.1.50.) Following is an example.
> Is it possible to display the repetitive lisp object within printed hash tables
> by #N= and #N# syntax, when `print-circle' is set to `t'?
> I notify this behavior as a bug, but it may not be so. I apologize in that
> case.
> (let ((print-circle t)
> (x (list 10 20))
> (y (make-hash-table)))
> (insert (format "%S\n" (list x x)))
> (puthash 1 x y)
> (puthash 2 x y)
> (insert (format "%S\n" y))
> (setcar x 3)
> (insert (format "%S\n" y)))
> Result:
(#1=(10 20) #1#)
#s(hash-table size 65 test eql rehash-size 1.5 rehash-threshold 0.8
data (1 (10 20) 2 (10 20)))
#s(hash-table size 65 test eql rehash-size 1.5 rehash-threshold 0.8
data (1 (3 20) 2 (3 20)))
> nil
I looked at the source in src/print.c. At the print_object() level the
behavior is correct for lists but fiendishly complicated so I couldn't
figure out the parallel structure for hashtables quickly. I'll put it
on my TODO list if no one else is interested.
Ted
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: bug#5082: 23.1.50; print-circle and make-hash-table
[not found] <mailman.11874.1259601628.2239.bug-gnu-emacs@gnu.org>
2009-12-02 22:19 ` bug#5082: 23.1.50; print-circle and make-hash-table Ted Zlatanov
@ 2009-12-02 22:19 ` Ted Zlatanov
1 sibling, 0 replies; 5+ messages in thread
From: Ted Zlatanov @ 2009-12-02 22:19 UTC (permalink / raw
To: bug-gnu-emacs; +Cc: Emacs Development
On Tue, 1 Dec 2009 00:09:30 +0900 川幡太一 <kawabata.taichi@gmail.com> wrote:
> Dear Emacs Developers,
> I've found an Emacs behavior that seems a bug concerning to `print-circle'
> and make-hash-table, so I would like to report it.
> By setting `print-circle' to `t', printing Lisp Object with recursive
> or repetitive
> list should be displayed as #N= and #N# syntax.
> However, it seems this is not true when printing lisp objects within
> hash tables
> (which become possible in Emacs 23.1.50.) Following is an example.
> Is it possible to display the repetitive lisp object within printed hash tables
> by #N= and #N# syntax, when `print-circle' is set to `t'?
> I notify this behavior as a bug, but it may not be so. I apologize in that
> case.
> (let ((print-circle t)
> (x (list 10 20))
> (y (make-hash-table)))
> (insert (format "%S\n" (list x x)))
> (puthash 1 x y)
> (puthash 2 x y)
> (insert (format "%S\n" y))
> (setcar x 3)
> (insert (format "%S\n" y)))
> Result:
(#1=(10 20) #1#)
#s(hash-table size 65 test eql rehash-size 1.5 rehash-threshold 0.8
data (1 (10 20) 2 (10 20)))
#s(hash-table size 65 test eql rehash-size 1.5 rehash-threshold 0.8
data (1 (3 20) 2 (3 20)))
> nil
I looked at the source in src/print.c. At the print_object() level the
behavior is correct for lists but fiendishly complicated so I couldn't
figure out the parallel structure for hashtables quickly. I'll put it
on my TODO list if no one else is interested.
Ted
^ permalink raw reply [flat|nested] 5+ messages in thread
* bug#5082: 23.1.50; print-circle and make-hash-table
@ 2009-11-30 15:09 川幡太一
0 siblings, 0 replies; 5+ messages in thread
From: 川幡太一 @ 2009-11-30 15:09 UTC (permalink / raw
To: emacs-pretest-bug
Dear Emacs Developers,
I've found an Emacs behavior that seems a bug concerning to `print-circle'
and make-hash-table, so I would like to report it.
By setting `print-circle' to `t', printing Lisp Object with recursive
or repetitive
list should be displayed as #N= and #N# syntax.
However, it seems this is not true when printing lisp objects within
hash tables
(which become possible in Emacs 23.1.50.) Following is an example.
Is it possible to display the repetitive lisp object within printed hash tables
by #N= and #N# syntax, when `print-circle' is set to `t'?
I notify this behavior as a bug, but it may not be so. I apologize in that
case.
(let ((print-circle t)
(x (list 10 20))
(y (make-hash-table)))
(insert (format "%S\n" (list x x)))
(puthash 1 x y)
(puthash 2 x y)
(insert (format "%S\n" y))
(setcar x 3)
(insert (format "%S\n" y)))
Result:
> (#1=(10 20) #1#)
> #s(hash-table size 65 test eql rehash-size 1.5 rehash-threshold 0.8
> data (1 (10 20) 2 (10 20)))
> #s(hash-table size 65 test eql rehash-size 1.5 rehash-threshold 0.8
> data (1 (3 20) 2 (3 20)))
nil
Cordially Yours,
--
---------------------------------------------------------------------
KAWABATA, Taichi E-mail: kawabata.taichi@gmail.com
^ permalink raw reply [flat|nested] 5+ messages in thread
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[not found] <mailman.11874.1259601628.2239.bug-gnu-emacs@gnu.org>
2009-12-02 22:19 ` bug#5082: 23.1.50; print-circle and make-hash-table Ted Zlatanov
2009-12-03 3:12 ` Glenn Morris
2009-12-03 17:25 ` Ted Zlatanov
2009-12-02 22:19 ` Ted Zlatanov
2009-11-30 15:09 川幡太一
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