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bug#4737: marked as done (23.1.50; C-j in *scratch* after a hash table c


From: Emacs bug Tracking System
Subject: bug#4737: marked as done (23.1.50; C-j in *scratch* after a hash table constant errors with void-function )
Date: Sun, 18 Oct 2009 22:35:08 +0000

Your message dated Sun, 18 Oct 2009 18:28:32 -0400
with message-id <address@hidden>
and subject line Re: bug#4737: 23.1.50; C-j in *scratch* after a hash table 
constant errors with void-function
has caused the Emacs bug report #4737,
regarding 23.1.50; C-j in *scratch* after a hash table constant errors with 
void-function 
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact address@hidden
immediately.)


-- 
4737: http://emacsbugs.donarmstrong.com/cgi-bin/bugreport.cgi?bug=4737
Emacs Bug Tracking System
Contact address@hidden with problems
--- Begin Message --- Subject: 23.1.50; C-j in *scratch* after a hash table constant errors with void-function Date: Fri, 16 Oct 2009 15:40:12 +0100
Hello!

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the address@hidden mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

In *scratch*: 

(progn
  (setq print-length nil)
  (make-hash-table)) 
=> #s(hash-table size 65 test eql rehash-size 1.5 rehash-threshold 0.8 data ())

#s(hash-table size 65 test eql rehash-size 1.5 rehash-threshold 0.8 data
 ())
=> 
Debugger entered--Lisp error: (void-function hash-table)
  (hash-table size 65 test eql rehash-size 1.5 rehash-threshold 0.8 data nil)
  eval((hash-table size 65 test eql rehash-size 1.5 rehash-threshold 0.8 data 
nil))
  eval-last-sexp-1(t)
  eval-last-sexp(t)
  eval-print-last-sexp()
  call-interactively(eval-print-last-sexp nil nil)

However, this succeeds: 

(car (list
      #s(hash-table size 65 test eql rehash-size 1.5 rehash-threshold 0.8 data 
())))
=> #s(hash-table size 65 test eql rehash-size 1.5 rehash-threshold 0.8 data ())

XEmacs handles the problem in #'forward-sexp, details here: 

http://hg.debian.org/hg/xemacs/xemacs/file/a27de91ae83c/lisp/lisp.el#l55

When I use the XEmacs version of #'forward-sexp, the problem goes away. 

Goodbye, 

Aidan

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/Sources/emacs/nextstep/Emacs.app/Contents/Resources/etc/DEBUG for instructions.


In GNU Emacs 23.1.50.1 (i386-apple-darwin8.11.1, NS apple-appkit-824.48)
 of 2009-09-30 on bonbon
Windowing system distributor `Apple', version 10.3.824
configured using `configure  '--with-ns' '--enable-asserts' 
'--enable-maintainer-mode' '--enable-cocoa-experimental-ctrl-g' '--with-xpm' 
'--with-jpeg' '--with-tiff' '--with-png' 'LDFLAGS=-L/opt/local/lib 
-L/usr/X11R6/lib -L/usr/local/lib' 'CPPFLAGS=-I/opt/local/include 
-I/usr/X11R6/include -I/usr/local/include''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: de_DE.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n 
C-n C-n C-n C-n C-n C-n C-n C-v C-v C-v C-v C-v C-v 
C-v C-v C-v C-v <escape> v C-v C-v C-v C-v C-v <prior> 
<next> <next> <prior> <prior> <prior> <prior> <prior> 
<prior> <prior> <prior> <prior> C-x b * s c <tab> <return> 
( k i l l e C-a C-k <f1> v p r i n t - l e <tab> n 
<tab> <return> C-x o C-n C-n C-n C-n C-n C-e C-b C-b 
C-b C-b <return> C-x o C-n C-x o C-e C-b C-b C-b <return> 
C-x o C-x b * s c <tab> C-g C-x o C-n C-n C-x o C-x 
b * s c <tab> <return> <escape> > <return> <return> 
( s e t q SPC e v a l - e x p r e s s i o n - p r i 
n t - l e n g t h SPC n i l ) C-j C-p C-p C-p C-p C-p 
C-p C-e C-j C-p C-d C-d ( l e n g t h SPC ' C-e ) C-j 
C-x o C-x o C-p C-p C-n C-n C-n C-p C-p C-p C-p C-k 
C-k C-k C-p C-e C-j C-p C-e C-j q <escape> x r e p 
o r t - e m a c s - b u g C-g C-p <return> <return> 
C-p ( c o n s SPC . C-a ( c a r SPC C-e C-n C-e <backspace> 
) <return> <tab> n i l ) ) C-j C-x o C-p C-p C-f C-f 
C-f C-f C-f C-f C-f C-f C-d C-n C-n C-j C-x o q <escape> 
x r e p o r t - e m a c s - b u g <return>

Recent messages:
Making completion list...
Type C-x 1 to delete the help window.
uncompressing simple.el.gz...done
Quit
Mark set
Entering debugger...
Back to top level.
Quit
Entering debugger...
Back to top level.

-- 
¿Dónde estará ahora mi sobrino Yoghurtu Nghe, que tuvo que huir
precipitadamente de la aldea por culpa de la escasez de rinocerontes?


--- End Message ---
--- Begin Message --- Subject: Re: bug#4737: 23.1.50; C-j in *scratch* after a hash table constant errors with void-function Date: Sun, 18 Oct 2009 18:28:32 -0400 User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.50 (gnu/linux)
Stefan Monnier <address@hidden> writes:

>> +    ;; Skip over hash table read syntax
>> +    (when (looking-back "#s")
>> +      (forward-char -2))
>
> Calling looking-back without a limit argument is asking for trouble (it
> has complexity O(size of buffer) or worse).

I've checked in the patch, with a limit argument.  Thanks for pointing
this out.

--- End Message ---

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