Re: hz and protrusion

[David Wooten <dw@trichotomic.net>]

Hans,

This is great news, thanks a million.

Where should I keep an eye out for the interface extensions?

Dave

On Feb 15, 2008, at 10:08 AM, Hans Hagen wrote:

> Hi,
>
> The latest luatex beta + mkiv support hz and protruding. The user
> interface will be extended a bit, but for the moment it goes as  
> follows:
>
> % engine=luatex
>
> % \setupfontexpansion [quality][stretch=2.5,shrink=2.5,step=. 
> 5,factor=1]
>
> \setupfontexpansion[oeps][a=1,b=2]
>
> \setuptolerance[verytolerant,stretch] \showframe
>
> \starttext
>
> \definefontfeature[demo][default] 
> [mode=node,expansion=quality,protrusion=pure]
>
> \start
>     \definedfont[Serif*demo at 12pt]           \enableadjusting
> \enableprotruding \input tufte \par
>    %\definedfont[name:optimanova*demo at 12pt] \enableadjusting
> \enableprotruding \input tufte \par
> \stop
>
> \stoptext
>
> (or the usual \setupalign options)
>
> As you may deduce from this example, handling is gone in mkiv. This  
> not
> only safes some 40K format file, but the new mechanism also runs  
> faster
> (some 10% overhead on 300 pages of pure text, which is rare).
>
> At some point we need to extend the hz/protruding vectors in mkiv to
> cover non latin scripts as well (currently they default to factors of
> 1). As with mkiv, latin glyphs fall back to their shape parent.
>
> Under some circumstances hz may not work as expected. Fixing this is  
> on
> the agenda for the next luatex beta release.
>
> 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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