Bug: Invalid content in publishing cache: Printed representation of hash table [6.36trans]

Bug: Invalid content in publishing cache: Printed representation of hash table [6.36trans]

[David Maus]

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Remember to cover the basics, that is, what you expected to happen and
what in fact did happen.  You don't know how to make a good report?  See

     http://orgmode.org/manual/Feedback.html#Feedback

Your bug report will be posted to the Org-mode mailing list.
------------------------------------------------------------------------

While trying to publish a web page project Org publish throws an
error:

,----
| Debugger entered--Lisp error: (invalid-read-syntax "#")
|   eval-buffer(#<buffer  *load*> nil "/home/dmaus/.org-timestamps/ictsoc-base-dyn.cache" nil t)  ; Reading at buffer position 28
`----

The problem is that the .cache file for the publishing project
contains the printed representation of a hash table:

,----[ ictsoc-base-dyn.cache ]
| (setq org-publish-cache
|   #<hash-table 'equal nil 3/100 0xab08dc0>)
`----

What is invalid according to the manual ("Hash notation cannot be read
at all, so the Lisp reader signals the error invalid-read-syntax
whenever it encounters ‘#<’.", 2.1: Printed Representation and Read
Syntax).

HTH
 -- David


Emacs  : GNU Emacs 23.1.1 (i486-pc-linux-gnu, GTK+ Version 2.18.2)
 of 2009-11-02 on raven, modified by Debian
Package: Org-mode version 6.36trans
-- 
OpenPGP... 0x99ADB83B5A4478E6
Jabber.... dmjena@jabber.org
Email..... dmaus@ictsoc.de

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Re: Bug: Invalid content in publishing cache: Printed representation of hash table [6.36trans]

[Carsten Dominik]

On May 19, 2010, at 9:16 AM, David Maus wrote:

>
> Remember to cover the basics, that is, what you expected to happen and
> what in fact did happen.  You don't know how to make a good report?   
> See
>
>     http://orgmode.org/manual/Feedback.html#Feedback
>
> Your bug report will be posted to the Org-mode mailing list.
> ------------------------------------------------------------------------
>
> While trying to publish a web page project Org publish throws an
> error:
>
> ,----
> | Debugger entered--Lisp error: (invalid-read-syntax "#")
> |   eval-buffer(#<buffer  *load*> nil "/home/dmaus/.org-timestamps/ 
> ictsoc-base-dyn.cache" nil t)  ; Reading at buffer position 28
> `----
>
> The problem is that the .cache file for the publishing project
> contains the printed representation of a hash table:
>
> ,----[ ictsoc-base-dyn.cache ]
> | (setq org-publish-cache
> |   #<hash-table 'equal nil 3/100 0xab08dc0>)
> `----
>
> What is invalid according to the manual ("Hash notation cannot be read
> at all, so the Lisp reader signals the error invalid-read-syntax
> whenever it encounters ‘#<’.", 2.1: Printed Representation and Read
> Syntax).

Actually - this seems to work for me just fine...
Don't know why, because I know that statement in the Emacs Lisp manual  
as well.

Ah, maybe there are different Emacs versions in play? 23.1.90.1 is the  
one I jut now tried.  It does not work in Emacs 22.

I would like to still support Emacs 22, so I think we should change  
how the hash is written out, my using maphash to draw out the key/ 
value pairs when writing, and puthash to build the cache when reading.

- Carsten




- Carsten

Re: Bug: Invalid content in publishing cache: Printed representation of hash table [6.36trans]

[David Maus]

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Carsten Dominik wrote:

>Actually - this seems to work for me just fine...
>Don't know why, because I know that statement in the Emacs Lisp manual
>as well.

>Ah, maybe there are different Emacs versions in play? 23.1.90.1 is the
>one I jut now tried.  It does not work in Emacs 22.

Here it's 23.1.1, shipped with Debian GNU/Linux "Sid".

>I would like to still support Emacs 22, so I think we should change
>how the hash is written out, my using maphash to draw out the key/
>value pairs when writing, and puthash to build the cache when reading.

I've put it on my list for the upcoming weekend.

  -- David
--
OpenPGP... 0x99ADB83B5A4478E6
Jabber.... dmjena@jabber.org
Email..... dmaus@ictsoc.de

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Re: Bug: Invalid content in publishing cache: Printed representation of hash table [6.36trans]

[Carsten Dominik]

On May 20, 2010, at 5:25 PM, David Maus wrote:

> Carsten Dominik wrote:
>
>> Actually - this seems to work for me just fine...
>> Don't know why, because I know that statement in the Emacs Lisp  
>> manual
>> as well.
>
>> Ah, maybe there are different Emacs versions in play? 23.1.90.1 is  
>> the
>> one I jut now tried.  It does not work in Emacs 22.
>
> Here it's 23.1.1, shipped with Debian GNU/Linux "Sid".
>
>> I would like to still support Emacs 22, so I think we should change
>> how the hash is written out, my using maphash to draw out the key/
>> value pairs when writing, and puthash to build the cache when  
>> reading.
>
> I've put it on my list for the upcoming weekend.

Please check with Sebastian to avoid double work.

Thanks!

- Carsten

Re: Bug: Invalid content in publishing cache: Printed representation of hash table [6.36trans]

[Sebastian Rose]

Carsten Dominik <carsten.dominik@gmail.com> writes:
> On May 20, 2010, at 5:25 PM, David Maus wrote:
>
>> Carsten Dominik wrote:
>>
>>> Actually - this seems to work for me just fine...
>>> Don't know why, because I know that statement in the Emacs Lisp manual
>>> as well.
>>
>>> Ah, maybe there are different Emacs versions in play? 23.1.90.1 is the
>>> one I jut now tried.  It does not work in Emacs 22.
>>
>> Here it's 23.1.1, shipped with Debian GNU/Linux "Sid".


The cache-file is loaded in one place:

  lisp/org-publish.el, line 938:

      (if cexists (load-file cache-file))


...and written in lisp/org-publish.el in the function:

   (defun org-publish-write-cache-file (&optional free-cache)


This might be the place to change it, because `load-file' is what's
supposed to work, right?

Which syntax is needed to make this work for elder emacsen? 


   Sebastian