Re: [NTG-context] Can not register the callback functions in MkIV

2010-02-19 Thread Yanrui Li 
2010/2/19 Yanrui Li liyanrui...@gmail.com

 Hi,

 Now it seems that we have not allowed to register the callback functions
 since beta 2010.02.18.

 For example:

 \startluacode

 local old_pre_linebreak_filter = callback.find ('pre_linebreak_filter')

 local function my_pre_linebreak_filter (head, groupcode)
 if old_pre_linebreak_filter then
 old_pre_linebreak_filter (head, groupcode)
 end
 print ('This is my pre_linebreak_callback')
 return true
 end

 callback.register ('pre_linebreak_filter', my_pre_linebreak_filter)

 \stopluacode

 \starttext

 This is just a test!

 \stoptext

 The 'my_pre_linebreak_filter' function can not work again. Is this a bug?

 --
 Best regards,

 Li Yanrui


I see. The 'pre_linebreak_filter' callback function is frozen.

-- 
Best regards,

Li Yanrui
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Re: [NTG-context] Can not register the callback functions in MkIV

2010-02-19 Thread Hans Hagen 

On 19-2-2010 13:21, Yanrui Li wrote:

2010/2/19 Yanrui Liliyanrui...@gmail.com


Hi,

Now it seems that we have not allowed to register the callback functions
since beta 2010.02.18.

For example:

\startluacode

local old_pre_linebreak_filter = callback.find ('pre_linebreak_filter')

local function my_pre_linebreak_filter (head, groupcode)
 if old_pre_linebreak_filter then
 old_pre_linebreak_filter (head, groupcode)
 end
 print ('This is my pre_linebreak_callback')
 return true
end

callback.register ('pre_linebreak_filter', my_pre_linebreak_filter)

\stopluacode

\starttext

This is just a test!

\stoptext

The 'my_pre_linebreak_filter' function can not work again. Is this a bug?

--
Best regards,

Li Yanrui



I see. The 'pre_linebreak_filter' callback function is frozen.


indeed as otherwise you kick out functionality; there are two user hooks:

tasks.appendaction(processors,before,modules.mine.whatever_a)
tasks.appendaction(processors,after,modules.mine.whatever_b)

as it's impossible to forsee what interference happens it will be clear 
that there is no support beyonf this


Hans

-
  Hans Hagen | PRAGMA ADE
  Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
 tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
 | www.pragma-pod.nl
-
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[NTG-context] Can not register the callback functions in MkIV

2010-02-18 Thread Yanrui Li 
Hi,

Now it seems that we have not allowed to register the callback functions
since beta 2010.02.18.

For example:

\startluacode

local old_pre_linebreak_filter = callback.find ('pre_linebreak_filter')

local function my_pre_linebreak_filter (head, groupcode)
if old_pre_linebreak_filter then
old_pre_linebreak_filter (head, groupcode)
end
print ('This is my pre_linebreak_callback')
return true
end

callback.register ('pre_linebreak_filter', my_pre_linebreak_filter)

\stopluacode

\starttext

This is just a test!

\stoptext

The 'my_pre_linebreak_filter' function can not work again. Is this a bug?

-- 
Best regards,

Li Yanrui
___
If your question is of interest to others as well, please add an entry to the 
Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
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