[Dev-luatex] vpack_filter shipout mode?

[Hans Hagen]

On 19-8-2010 9:36, linuxss wrote:

> question: how to see all the nodes using callback in a shipout mode?
> or how to find out which hlist/vlist will be outputted?

shipout is somewhat special and we don't have a callback for the shipout 
itself

in a regular macro package, the page is packaged in a box (often 255 ) 
and you can hook in some lua code there:

- locate the \shipout command being used
- see what box is shipped out
- do a directlua just before \shipout and look the box

so, something:

\directlua{analyze(tex.box[255)}

(there will be a callback for this but it's not an isolated event as for 
instance xforms are also shipped out and the xform subsystem is not 
opened up / redone yet)

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
     tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------